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 <fcntl.h>
  31 #include <grp.h>
  32 #ifdef HAVE_GETOPT_H
  33 #include <getopt.h>
  34 #else
  35 extern char *optarg;
  36 extern int optind;
  37 #endif
  38 #include <pwd.h>
  39 #include <stdio.h>
  40 #ifdef HAVE_STDLIB_H
  41 #include <stdlib.h>
  42 #endif
  43 #include <string.h>
  44 #include <time.h>
  45 #include <unistd.h>
  46 #include <sys/types.h>
  47 #include <libgen.h>
  48 #include <limits.h>
  49
  50 #include "ext2fs/ext2_fs.h"
  51 #include "ext2fs/ext2fs.h"
  52 #include "et/com_err.h"
  53 #include "uuid/uuid.h"
  54 #include "e2p/e2p.h"
  55 #include "jfs_user.h"
  56 #include "util.h"
  57 #include "blkid/blkid.h"
  58
  59 #include "../version.h"
  60 #include "nls-enable.h"
  61
  62 const char *program_name = "tune2fs";
  63 char *device_name;
  64 char *new_label, *new_last_mounted, *new_UUID;
  65 char *io_options;
  66 static int c_flag, C_flag, e_flag, f_flag, g_flag, i_flag, l_flag, L_flag;
  67 static int m_flag, M_flag, r_flag, s_flag = -1, u_flag, U_flag, T_flag;
  68 static int I_flag;
  69 static time_t last_check_time;
  70 static int print_label;
  71 static int max_mount_count, mount_count, mount_flags;
  72 static unsigned long interval;
  73 static blk64_t reserved_blocks;
  74 static double reserved_ratio;
  75 static unsigned long resgid, resuid;
  76 static unsigned short errors;
  77 static int open_flag;
  78 static char *features_cmd;
  79 static char *mntopts_cmd;
  80 static int stride, stripe_width;
  81 static int stride_set, stripe_width_set;
  82 static char *extended_cmd;
  83 static unsigned long new_inode_size;
  84
  85 int journal_size, journal_flags;
  86 char *journal_device;
  87
  88 static struct list_head blk_move_list;
  89
  90 struct blk_move {
  91         struct list_head list;
  92         blk_t old_loc;
  93         blk_t new_loc;
  94 };
  95
  96
  97 static const char *please_fsck = N_("Please run e2fsck on the filesystem.\n");
  98
  99 #ifdef CONFIG_BUILD_FINDFS
 100 void do_findfs(int argc, char **argv);
 101 #endif
 102
 103 static void usage(void)
 104 {
 105         fprintf(stderr,
 106                 _("Usage: %s [-c max_mounts_count] [-e errors_behavior] "
 107                   "[-g group]\n"
 108                   "\t[-i interval[d|m|w]] [-j] [-J journal_options] [-l]\n"
 109                   "\t[-m reserved_blocks_percent] "
 110                   "[-o [^]mount_options[,...]] \n"
 111                   "\t[-r reserved_blocks_count] [-u user] [-C mount_count] "
 112                   "[-L volume_label]\n"
 113                   "\t[-M last_mounted_dir] [-O [^]feature[,...]]\n"
 114                   "\t[-E extended-option[,...]] [-T last_check_time] "
 115                   "[-U UUID]\n\t[ -I new_inode_size ] device\n"), program_name);
 116         exit(1);
 117 }
 118
 119 static __u32 ok_features[3] = {
 120         /* Compat */
 121         EXT3_FEATURE_COMPAT_HAS_JOURNAL |
 122                 EXT2_FEATURE_COMPAT_DIR_INDEX,
 123         /* Incompat */
 124         EXT2_FEATURE_INCOMPAT_FILETYPE |
 125                 EXT3_FEATURE_INCOMPAT_EXTENTS |
 126                 EXT4_FEATURE_INCOMPAT_FLEX_BG,
 127         /* R/O compat */
 128         EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
 129                 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
 130                 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
 131                 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|
 132                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM |
 133                 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER
 134 };
 135
 136 static __u32 clear_ok_features[3] = {
 137         /* Compat */
 138         EXT3_FEATURE_COMPAT_HAS_JOURNAL |
 139                 EXT2_FEATURE_COMPAT_RESIZE_INODE |
 140                 EXT2_FEATURE_COMPAT_DIR_INDEX,
 141         /* Incompat */
 142         EXT2_FEATURE_INCOMPAT_FILETYPE |
 143                 EXT4_FEATURE_INCOMPAT_FLEX_BG,
 144         /* R/O compat */
 145         EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
 146                 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
 147                 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
 148                 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|
 149                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM
 150 };
 151
 152 /*
 153  * Remove an external journal from the filesystem
 154  */
 155 static void remove_journal_device(ext2_filsys fs)
 156 {
 157         char            *journal_path;
 158         ext2_filsys     jfs;
 159         char            buf[1024];
 160         journal_superblock_t    *jsb;
 161         int             i, nr_users;
 162         errcode_t       retval;
 163         int             commit_remove_journal = 0;
 164         io_manager      io_ptr;
 165
 166         if (f_flag)
 167                 commit_remove_journal = 1; /* force removal even if error */
 168
 169         uuid_unparse(fs->super->s_journal_uuid, buf);
 170         journal_path = blkid_get_devname(NULL, "UUID", buf);
 171
 172         if (!journal_path) {
 173                 journal_path =
 174                         ext2fs_find_block_device(fs->super->s_journal_dev);
 175                 if (!journal_path)
 176                         return;
 177         }
 178
 179 #ifdef CONFIG_TESTIO_DEBUG
 180         if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
 181                 io_ptr = test_io_manager;
 182                 test_io_backing_manager = unix_io_manager;
 183         } else
 184 #endif
 185                 io_ptr = unix_io_manager;
 186         retval = ext2fs_open(journal_path, EXT2_FLAG_RW|
 187                              EXT2_FLAG_JOURNAL_DEV_OK, 0,
 188                              fs->blocksize, io_ptr, &jfs);
 189         if (retval) {
 190                 com_err(program_name, retval,
 191                         _("while trying to open external journal"));
 192                 goto no_valid_journal;
 193         }
 194         if (!(jfs->super->s_feature_incompat & EXT3_FEATURE_INCOMPAT_JOURNAL_DEV)) {
 195                 fprintf(stderr, _("%s is not a journal device.\n"),
 196                         journal_path);
 197                 goto no_valid_journal;
 198         }
 199
 200         /* Get the journal superblock */
 201         if ((retval = io_channel_read_blk64(jfs->io, 1, -1024, buf))) {
 202                 com_err(program_name, retval,
 203                         _("while reading journal superblock"));
 204                 goto no_valid_journal;
 205         }
 206
 207         jsb = (journal_superblock_t *) buf;
 208         if ((jsb->s_header.h_magic != (unsigned) ntohl(JFS_MAGIC_NUMBER)) ||
 209             (jsb->s_header.h_blocktype != (unsigned) ntohl(JFS_SUPERBLOCK_V2))) {
 210                 fputs(_("Journal superblock not found!\n"), stderr);
 211                 goto no_valid_journal;
 212         }
 213
 214         /* Find the filesystem UUID */
 215         nr_users = ntohl(jsb->s_nr_users);
 216         for (i = 0; i < nr_users; i++) {
 217                 if (memcmp(fs->super->s_uuid,
 218                            &jsb->s_users[i*16], 16) == 0)
 219                         break;
 220         }
 221         if (i >= nr_users) {
 222                 fputs(_("Filesystem's UUID not found on journal device.\n"),
 223                       stderr);
 224                 commit_remove_journal = 1;
 225                 goto no_valid_journal;
 226         }
 227         nr_users--;
 228         for (i = 0; i < nr_users; i++)
 229                 memcpy(&jsb->s_users[i*16], &jsb->s_users[(i+1)*16], 16);
 230         jsb->s_nr_users = htonl(nr_users);
 231
 232         /* Write back the journal superblock */
 233         if ((retval = io_channel_write_blk64(jfs->io, 1, -1024, buf))) {
 234                 com_err(program_name, retval,
 235                         "while writing journal superblock.");
 236                 goto no_valid_journal;
 237         }
 238
 239         commit_remove_journal = 1;
 240
 241 no_valid_journal:
 242         if (commit_remove_journal == 0) {
 243                 fputs(_("Journal NOT removed\n"), stderr);
 244                 exit(1);
 245         }
 246         fs->super->s_journal_dev = 0;
 247         uuid_clear(fs->super->s_journal_uuid);
 248         ext2fs_mark_super_dirty(fs);
 249         fputs(_("Journal removed\n"), stdout);
 250         free(journal_path);
 251 }
 252
 253 /* Helper function for remove_journal_inode */
 254 static int release_blocks_proc(ext2_filsys fs, blk_t *blocknr,
 255                                int blockcnt EXT2FS_ATTR((unused)),
 256                                void *private EXT2FS_ATTR((unused)))
 257 {
 258         blk_t   block;
 259         int     group;
 260
 261         block = *blocknr;
 262         ext2fs_unmark_block_bitmap2(fs->block_map, block);
 263         group = ext2fs_group_of_blk(fs, block);
 264         fs->group_desc[group].bg_free_blocks_count++;
 265         ext2fs_group_desc_csum_set(fs, group);
 266         ext2fs_free_blocks_count_add(fs->super, 1);
 267         return 0;
 268 }
 269
 270 /*
 271  * Remove the journal inode from the filesystem
 272  */
 273 static void remove_journal_inode(ext2_filsys fs)
 274 {
 275         struct ext2_inode       inode;
 276         errcode_t               retval;
 277         ino_t                   ino = fs->super->s_journal_inum;
 278
 279         retval = ext2fs_read_inode(fs, ino,  &inode);
 280         if (retval) {
 281                 com_err(program_name, retval,
 282                         _("while reading journal inode"));
 283                 exit(1);
 284         }
 285         if (ino == EXT2_JOURNAL_INO) {
 286                 retval = ext2fs_read_bitmaps(fs);
 287                 if (retval) {
 288                         com_err(program_name, retval,
 289                                 _("while reading bitmaps"));
 290                         exit(1);
 291                 }
 292                 retval = ext2fs_block_iterate(fs, ino,
 293                                               BLOCK_FLAG_READ_ONLY, NULL,
 294                                               release_blocks_proc, NULL);
 295                 if (retval) {
 296                         com_err(program_name, retval,
 297                                 _("while clearing journal inode"));
 298                         exit(1);
 299                 }
 300                 memset(&inode, 0, sizeof(inode));
 301                 ext2fs_mark_bb_dirty(fs);
 302                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 303         } else
 304                 inode.i_flags &= ~EXT2_IMMUTABLE_FL;
 305         retval = ext2fs_write_inode(fs, ino, &inode);
 306         if (retval) {
 307                 com_err(program_name, retval,
 308                         _("while writing journal inode"));
 309                 exit(1);
 310         }
 311         fs->super->s_journal_inum = 0;
 312         ext2fs_mark_super_dirty(fs);
 313 }
 314
 315 /*
 316  * Update the default mount options
 317  */
 318 static void update_mntopts(ext2_filsys fs, char *mntopts)
 319 {
 320         struct ext2_super_block *sb = fs->super;
 321
 322         if (e2p_edit_mntopts(mntopts, &sb->s_default_mount_opts, ~0)) {
 323                 fprintf(stderr, _("Invalid mount option set: %s\n"),
 324                         mntopts);
 325                 exit(1);
 326         }
 327         ext2fs_mark_super_dirty(fs);
 328 }
 329
 330 /*
 331  * Update the feature set as provided by the user.
 332  */
 333 static void update_feature_set(ext2_filsys fs, char *features)
 334 {
 335         struct ext2_super_block *sb = fs->super;
 336         __u32           old_features[3];
 337         int             type_err;
 338         unsigned int    mask_err;
 339
 340 #define FEATURE_ON(type, mask) (!(old_features[(type)] & (mask)) && \
 341                                 ((&sb->s_feature_compat)[(type)] & (mask)))
 342 #define FEATURE_OFF(type, mask) ((old_features[(type)] & (mask)) && \
 343                                  !((&sb->s_feature_compat)[(type)] & (mask)))
 344 #define FEATURE_CHANGED(type, mask) ((mask) & \
 345                      (old_features[(type)] ^ (&sb->s_feature_compat)[(type)]))
 346
 347         old_features[E2P_FEATURE_COMPAT] = sb->s_feature_compat;
 348         old_features[E2P_FEATURE_INCOMPAT] = sb->s_feature_incompat;
 349         old_features[E2P_FEATURE_RO_INCOMPAT] = sb->s_feature_ro_compat;
 350
 351         if (e2p_edit_feature2(features, &sb->s_feature_compat,
 352                               ok_features, clear_ok_features,
 353                               &type_err, &mask_err)) {
 354                 if (!mask_err)
 355                         fprintf(stderr,
 356                                 _("Invalid filesystem option set: %s\n"),
 357                                 features);
 358                 else if (type_err & E2P_FEATURE_NEGATE_FLAG)
 359                         fprintf(stderr, _("Clearing filesystem feature '%s' "
 360                                           "not supported.\n"),
 361                                 e2p_feature2string(type_err &
 362                                                    E2P_FEATURE_TYPE_MASK,
 363                                                    mask_err));
 364                 else
 365                         fprintf(stderr, _("Setting filesystem feature '%s' "
 366                                           "not supported.\n"),
 367                                 e2p_feature2string(type_err, mask_err));
 368                 exit(1);
 369         }
 370
 371         if (FEATURE_OFF(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
 372                 if ((mount_flags & EXT2_MF_MOUNTED) &&
 373                     !(mount_flags & EXT2_MF_READONLY)) {
 374                         fputs(_("The has_journal feature may only be "
 375                                 "cleared when the filesystem is\n"
 376                                 "unmounted or mounted "
 377                                 "read-only.\n"), stderr);
 378                         exit(1);
 379                 }
 380                 if (sb->s_feature_incompat &
 381                     EXT3_FEATURE_INCOMPAT_RECOVER) {
 382                         fputs(_("The needs_recovery flag is set.  "
 383                                 "Please run e2fsck before clearing\n"
 384                                 "the has_journal flag.\n"), stderr);
 385                         exit(1);
 386                 }
 387                 if (sb->s_journal_inum) {
 388                         remove_journal_inode(fs);
 389                 }
 390                 if (sb->s_journal_dev) {
 391                         remove_journal_device(fs);
 392                 }
 393         }
 394
 395         if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
 396                 /*
 397                  * If adding a journal flag, let the create journal
 398                  * code below handle setting the flag and creating the
 399                  * journal.  We supply a default size if necessary.
 400                  */
 401                 if (!journal_size)
 402                         journal_size = -1;
 403                 sb->s_feature_compat &= ~EXT3_FEATURE_COMPAT_HAS_JOURNAL;
 404         }
 405
 406         if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT2_FEATURE_COMPAT_DIR_INDEX)) {
 407                 if (!sb->s_def_hash_version)
 408                         sb->s_def_hash_version = EXT2_HASH_HALF_MD4;
 409                 if (uuid_is_null((unsigned char *) sb->s_hash_seed))
 410                         uuid_generate((unsigned char *) sb->s_hash_seed);
 411         }
 412
 413         if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_FLEX_BG)) {
 414                 if (ext2fs_check_desc(fs)) {
 415                         fputs(_("Clearing the flex_bg flag would "
 416                                 "cause the the filesystem to be\n"
 417                                 "inconsistent.\n"), stderr);
 418                         exit(1);
 419                 }
 420         }
 421
 422         if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
 423                             EXT4_FEATURE_RO_COMPAT_HUGE_FILE)) {
 424                 if ((mount_flags & EXT2_MF_MOUNTED) &&
 425                     !(mount_flags & EXT2_MF_READONLY)) {
 426                         fputs(_("The huge_file feature may only be "
 427                                 "cleared when the filesystem is\n"
 428                                 "unmounted or mounted "
 429                                 "read-only.\n"), stderr);
 430                         exit(1);
 431                 }
 432         }
 433
 434         if (sb->s_rev_level == EXT2_GOOD_OLD_REV &&
 435             (sb->s_feature_compat || sb->s_feature_ro_compat ||
 436              sb->s_feature_incompat))
 437                 ext2fs_update_dynamic_rev(fs);
 438
 439         if (FEATURE_CHANGED(E2P_FEATURE_RO_INCOMPAT,
 440                             EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER) ||
 441             FEATURE_CHANGED(E2P_FEATURE_RO_INCOMPAT,
 442                             EXT4_FEATURE_RO_COMPAT_GDT_CSUM) ||
 443             FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
 444                         EXT4_FEATURE_RO_COMPAT_HUGE_FILE) ||
 445             FEATURE_CHANGED(E2P_FEATURE_INCOMPAT,
 446                             EXT2_FEATURE_INCOMPAT_FILETYPE) ||
 447             FEATURE_CHANGED(E2P_FEATURE_COMPAT,
 448                             EXT2_FEATURE_COMPAT_RESIZE_INODE) ||
 449             FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
 450                         EXT2_FEATURE_RO_COMPAT_LARGE_FILE)) {
 451                 sb->s_state &= ~EXT2_VALID_FS;
 452                 printf("\n%s\n", _(please_fsck));
 453                 if (mount_flags & EXT2_MF_READONLY)
 454                         printf(_("(and reboot afterwards!)\n"));
 455         }
 456
 457         if ((old_features[E2P_FEATURE_COMPAT] != sb->s_feature_compat) ||
 458             (old_features[E2P_FEATURE_INCOMPAT] != sb->s_feature_incompat) ||
 459             (old_features[E2P_FEATURE_RO_INCOMPAT] != sb->s_feature_ro_compat))
 460                 ext2fs_mark_super_dirty(fs);
 461 }
 462
 463 /*
 464  * Add a journal to the filesystem.
 465  */
 466 static void add_journal(ext2_filsys fs)
 467 {
 468         unsigned long journal_blocks;
 469         errcode_t       retval;
 470         ext2_filsys     jfs;
 471         io_manager      io_ptr;
 472
 473         if (fs->super->s_feature_compat &
 474             EXT3_FEATURE_COMPAT_HAS_JOURNAL) {
 475                 fputs(_("The filesystem already has a journal.\n"), stderr);
 476                 goto err;
 477         }
 478         if (journal_device) {
 479                 check_plausibility(journal_device);
 480                 check_mount(journal_device, 0, _("journal"));
 481 #ifdef CONFIG_TESTIO_DEBUG
 482                 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
 483                         io_ptr = test_io_manager;
 484                         test_io_backing_manager = unix_io_manager;
 485                 } else
 486 #endif
 487                         io_ptr = unix_io_manager;
 488                 retval = ext2fs_open(journal_device, EXT2_FLAG_RW|
 489                                      EXT2_FLAG_JOURNAL_DEV_OK, 0,
 490                                      fs->blocksize, io_ptr, &jfs);
 491                 if (retval) {
 492                         com_err(program_name, retval,
 493                                 _("\n\twhile trying to open journal on %s\n"),
 494                                 journal_device);
 495                         goto err;
 496                 }
 497                 printf(_("Creating journal on device %s: "),
 498                        journal_device);
 499                 fflush(stdout);
 500
 501                 retval = ext2fs_add_journal_device(fs, jfs);
 502                 ext2fs_close(jfs);
 503                 if (retval) {
 504                         com_err(program_name, retval,
 505                                 _("while adding filesystem to journal on %s"),
 506                                 journal_device);
 507                         goto err;
 508                 }
 509                 fputs(_("done\n"), stdout);
 510         } else if (journal_size) {
 511                 fputs(_("Creating journal inode: "), stdout);
 512                 fflush(stdout);
 513                 journal_blocks = figure_journal_size(journal_size, fs);
 514
 515                 retval = ext2fs_add_journal_inode(fs, journal_blocks,
 516                                                   journal_flags);
 517                 if (retval) {
 518                         fprintf(stderr, "\n");
 519                         com_err(program_name, retval,
 520                                 _("\n\twhile trying to create journal file"));
 521                         exit(1);
 522                 } else
 523                         fputs(_("done\n"), stdout);
 524                 /*
 525                  * If the filesystem wasn't mounted, we need to force
 526                  * the block group descriptors out.
 527                  */
 528                 if ((mount_flags & EXT2_MF_MOUNTED) == 0)
 529                         fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 530         }
 531         print_check_message(fs);
 532         return;
 533
 534 err:
 535         free(journal_device);
 536         exit(1);
 537 }
 538
 539
 540 static void parse_e2label_options(int argc, char ** argv)
 541 {
 542         if ((argc < 2) || (argc > 3)) {
 543                 fputs(_("Usage: e2label device [newlabel]\n"), stderr);
 544                 exit(1);
 545         }
 546         io_options = strchr(argv[1], '?');
 547         if (io_options)
 548                 *io_options++ = 0;
 549         device_name = blkid_get_devname(NULL, argv[1], NULL);
 550         if (!device_name) {
 551                 com_err("e2label", 0, _("Unable to resolve '%s'"),
 552                         argv[1]);
 553                 exit(1);
 554         }
 555         open_flag = EXT2_FLAG_JOURNAL_DEV_OK;
 556         if (argc == 3) {
 557                 open_flag |= EXT2_FLAG_RW;
 558                 L_flag = 1;
 559                 new_label = argv[2];
 560         } else
 561                 print_label++;
 562 }
 563
 564 static time_t parse_time(char *str)
 565 {
 566         struct  tm      ts;
 567
 568         if (strcmp(str, "now") == 0) {
 569                 return (time(0));
 570         }
 571         memset(&ts, 0, sizeof(ts));
 572 #ifdef HAVE_STRPTIME
 573         strptime(str, "%Y%m%d%H%M%S", &ts);
 574 #else
 575         sscanf(str, "%4d%2d%2d%2d%2d%2d", &ts.tm_year, &ts.tm_mon,
 576                &ts.tm_mday, &ts.tm_hour, &ts.tm_min, &ts.tm_sec);
 577         ts.tm_year -= 1900;
 578         ts.tm_mon -= 1;
 579         if (ts.tm_year < 0 || ts.tm_mon < 0 || ts.tm_mon > 11 ||
 580             ts.tm_mday < 0 || ts.tm_mday > 31 || ts.tm_hour > 23 ||
 581             ts.tm_min > 59 || ts.tm_sec > 61)
 582                 ts.tm_mday = 0;
 583 #endif
 584         if (ts.tm_mday == 0) {
 585                 com_err(program_name, 0,
 586                         _("Couldn't parse date/time specifier: %s"),
 587                         str);
 588                 usage();
 589         }
 590         ts.tm_isdst = -1;
 591         return (mktime(&ts));
 592 }
 593
 594 static void parse_tune2fs_options(int argc, char **argv)
 595 {
 596         int c;
 597         char *tmp;
 598         struct group *gr;
 599         struct passwd *pw;
 600
 601         open_flag = 0;
 602
 603         printf("tune2fs %s (%s)\n", E2FSPROGS_VERSION, E2FSPROGS_DATE);
 604         while ((c = getopt(argc, argv, "c:e:fg:i:jlm:o:r:s:u:C:E:I:J:L:M:O:T:U:")) != EOF)
 605                 switch (c) {
 606                 case 'c':
 607                         max_mount_count = strtol(optarg, &tmp, 0);
 608                         if (*tmp || max_mount_count > 16000) {
 609                                 com_err(program_name, 0,
 610                                         _("bad mounts count - %s"),
 611                                         optarg);
 612                                 usage();
 613                         }
 614                         if (max_mount_count == 0)
 615                                 max_mount_count = -1;
 616                         c_flag = 1;
 617                         open_flag = EXT2_FLAG_RW;
 618                         break;
 619                 case 'C':
 620                         mount_count = strtoul(optarg, &tmp, 0);
 621                         if (*tmp || mount_count > 16000) {
 622                                 com_err(program_name, 0,
 623                                         _("bad mounts count - %s"),
 624                                         optarg);
 625                                 usage();
 626                         }
 627                         C_flag = 1;
 628                         open_flag = EXT2_FLAG_RW;
 629                         break;
 630                 case 'e':
 631                         if (strcmp(optarg, "continue") == 0)
 632                                 errors = EXT2_ERRORS_CONTINUE;
 633                         else if (strcmp(optarg, "remount-ro") == 0)
 634                                 errors = EXT2_ERRORS_RO;
 635                         else if (strcmp(optarg, "panic") == 0)
 636                                 errors = EXT2_ERRORS_PANIC;
 637                         else {
 638                                 com_err(program_name, 0,
 639                                         _("bad error behavior - %s"),
 640                                         optarg);
 641                                 usage();
 642                         }
 643                         e_flag = 1;
 644                         open_flag = EXT2_FLAG_RW;
 645                         break;
 646                 case 'E':
 647                         extended_cmd = optarg;
 648                         open_flag |= EXT2_FLAG_RW;
 649                         break;
 650                 case 'f': /* Force */
 651                         f_flag = 1;
 652                         break;
 653                 case 'g':
 654                         resgid = strtoul(optarg, &tmp, 0);
 655                         if (*tmp) {
 656                                 gr = getgrnam(optarg);
 657                                 if (gr == NULL)
 658                                         tmp = optarg;
 659                                 else {
 660                                         resgid = gr->gr_gid;
 661                                         *tmp = 0;
 662                                 }
 663                         }
 664                         if (*tmp) {
 665                                 com_err(program_name, 0,
 666                                         _("bad gid/group name - %s"),
 667                                         optarg);
 668                                 usage();
 669                         }
 670                         g_flag = 1;
 671                         open_flag = EXT2_FLAG_RW;
 672                         break;
 673                 case 'i':
 674                         interval = strtoul(optarg, &tmp, 0);
 675                         switch (*tmp) {
 676                         case 's':
 677                                 tmp++;
 678                                 break;
 679                         case '\0':
 680                         case 'd':
 681                         case 'D': /* days */
 682                                 interval *= 86400;
 683                                 if (*tmp != '\0')
 684                                         tmp++;
 685                                 break;
 686                         case 'm':
 687                         case 'M': /* months! */
 688                                 interval *= 86400 * 30;
 689                                 tmp++;
 690                                 break;
 691                         case 'w':
 692                         case 'W': /* weeks */
 693                                 interval *= 86400 * 7;
 694                                 tmp++;
 695                                 break;
 696                         }
 697                         if (*tmp) {
 698                                 com_err(program_name, 0,
 699                                         _("bad interval - %s"), optarg);
 700                                 usage();
 701                         }
 702                         i_flag = 1;
 703                         open_flag = EXT2_FLAG_RW;
 704                         break;
 705                 case 'j':
 706                         if (!journal_size)
 707                                 journal_size = -1;
 708                         open_flag = EXT2_FLAG_RW;
 709                         break;
 710                 case 'J':
 711                         parse_journal_opts(optarg);
 712                         open_flag = EXT2_FLAG_RW;
 713                         break;
 714                 case 'l':
 715                         l_flag = 1;
 716                         break;
 717                 case 'L':
 718                         new_label = optarg;
 719                         L_flag = 1;
 720                         open_flag |= EXT2_FLAG_RW |
 721                                 EXT2_FLAG_JOURNAL_DEV_OK;
 722                         break;
 723                 case 'm':
 724                         reserved_ratio = strtod(optarg, &tmp);
 725                         if (*tmp || reserved_ratio > 50 ||
 726                             reserved_ratio < 0) {
 727                                 com_err(program_name, 0,
 728                                         _("bad reserved block ratio - %s"),
 729                                         optarg);
 730                                 usage();
 731                         }
 732                         m_flag = 1;
 733                         open_flag = EXT2_FLAG_RW;
 734                         break;
 735                 case 'M':
 736                         new_last_mounted = optarg;
 737                         M_flag = 1;
 738                         open_flag = EXT2_FLAG_RW;
 739                         break;
 740                 case 'o':
 741                         if (mntopts_cmd) {
 742                                 com_err(program_name, 0,
 743                                         _("-o may only be specified once"));
 744                                 usage();
 745                         }
 746                         mntopts_cmd = optarg;
 747                         open_flag = EXT2_FLAG_RW;
 748                         break;
 749
 750                 case 'O':
 751                         if (features_cmd) {
 752                                 com_err(program_name, 0,
 753                                         _("-O may only be specified once"));
 754                                 usage();
 755                         }
 756                         features_cmd = optarg;
 757                         open_flag = EXT2_FLAG_RW;
 758                         break;
 759                 case 'r':
 760                         reserved_blocks = strtoul(optarg, &tmp, 0);
 761                         if (*tmp) {
 762                                 com_err(program_name, 0,
 763                                         _("bad reserved blocks count - %s"),
 764                                         optarg);
 765                                 usage();
 766                         }
 767                         r_flag = 1;
 768                         open_flag = EXT2_FLAG_RW;
 769                         break;
 770                 case 's': /* Deprecated */
 771                         s_flag = atoi(optarg);
 772                         open_flag = EXT2_FLAG_RW;
 773                         break;
 774                 case 'T':
 775                         T_flag = 1;
 776                         last_check_time = parse_time(optarg);
 777                         open_flag = EXT2_FLAG_RW;
 778                         break;
 779                 case 'u':
 780                                 resuid = strtoul(optarg, &tmp, 0);
 781                                 if (*tmp) {
 782                                         pw = getpwnam(optarg);
 783                                         if (pw == NULL)
 784                                                 tmp = optarg;
 785                                         else {
 786                                                 resuid = pw->pw_uid;
 787                                                 *tmp = 0;
 788                                         }
 789                                 }
 790                                 if (*tmp) {
 791                                         com_err(program_name, 0,
 792                                                 _("bad uid/user name - %s"),
 793                                                 optarg);
 794                                         usage();
 795                                 }
 796                                 u_flag = 1;
 797                                 open_flag = EXT2_FLAG_RW;
 798                                 break;
 799                 case 'U':
 800                         new_UUID = optarg;
 801                         U_flag = 1;
 802                         open_flag = EXT2_FLAG_RW |
 803                                 EXT2_FLAG_JOURNAL_DEV_OK;
 804                         break;
 805                 case 'I':
 806                         new_inode_size = strtoul(optarg, &tmp, 0);
 807                         if (*tmp) {
 808                                 com_err(program_name, 0,
 809                                         _("bad inode size - %s"),
 810                                         optarg);
 811                                 usage();
 812                         }
 813                         if (!((new_inode_size &
 814                                (new_inode_size - 1)) == 0)) {
 815                                 com_err(program_name, 0,
 816                                         _("Inode size must be a "
 817                                           "power of two- %s"),
 818                                         optarg);
 819                                 usage();
 820                         }
 821                         open_flag = EXT2_FLAG_RW;
 822                         I_flag = 1;
 823                         break;
 824                 default:
 825                         usage();
 826                 }
 827         if (optind < argc - 1 || optind == argc)
 828                 usage();
 829         if (!open_flag && !l_flag)
 830                 usage();
 831         io_options = strchr(argv[optind], '?');
 832         if (io_options)
 833                 *io_options++ = 0;
 834         device_name = blkid_get_devname(NULL, argv[optind], NULL);
 835         if (!device_name) {
 836                 com_err("tune2fs", 0, _("Unable to resolve '%s'"),
 837                         argv[optind]);
 838                 exit(1);
 839         }
 840 }
 841
 842 #ifdef CONFIG_BUILD_FINDFS
 843 void do_findfs(int argc, char **argv)
 844 {
 845         char    *dev;
 846
 847         if ((argc != 2) ||
 848             (strncmp(argv[1], "LABEL=", 6) && strncmp(argv[1], "UUID=", 5))) {
 849                 fprintf(stderr, "Usage: findfs LABEL=<label>|UUID=<uuid>\n");
 850                 exit(2);
 851         }
 852         dev = blkid_get_devname(NULL, argv[1], NULL);
 853         if (!dev) {
 854                 com_err("findfs", 0, _("Unable to resolve '%s'"),
 855                         argv[1]);
 856                 exit(1);
 857         }
 858         puts(dev);
 859         exit(0);
 860 }
 861 #endif
 862
 863 static void parse_extended_opts(ext2_filsys fs, const char *opts)
 864 {
 865         char    *buf, *token, *next, *p, *arg;
 866         int     len, hash_alg;
 867         int     r_usage = 0;
 868
 869         len = strlen(opts);
 870         buf = malloc(len+1);
 871         if (!buf) {
 872                 fprintf(stderr,
 873                         _("Couldn't allocate memory to parse options!\n"));
 874                 exit(1);
 875         }
 876         strcpy(buf, opts);
 877         for (token = buf; token && *token; token = next) {
 878                 p = strchr(token, ',');
 879                 next = 0;
 880                 if (p) {
 881                         *p = 0;
 882                         next = p+1;
 883                 }
 884                 arg = strchr(token, '=');
 885                 if (arg) {
 886                         *arg = 0;
 887                         arg++;
 888                 }
 889                 if (!strcmp(token, "test_fs")) {
 890                         fs->super->s_flags |= EXT2_FLAGS_TEST_FILESYS;
 891                         printf("Setting test filesystem flag\n");
 892                         ext2fs_mark_super_dirty(fs);
 893                 } else if (!strcmp(token, "^test_fs")) {
 894                         fs->super->s_flags &= ~EXT2_FLAGS_TEST_FILESYS;
 895                         printf("Clearing test filesystem flag\n");
 896                         ext2fs_mark_super_dirty(fs);
 897                 } else if (strcmp(token, "stride") == 0) {
 898                         if (!arg) {
 899                                 r_usage++;
 900                                 continue;
 901                         }
 902                         stride = strtoul(arg, &p, 0);
 903                         if (*p || (stride == 0)) {
 904                                 fprintf(stderr,
 905                                        _("Invalid RAID stride: %s\n"),
 906                                         arg);
 907                                 r_usage++;
 908                                 continue;
 909                         }
 910                         stride_set = 1;
 911                 } else if (strcmp(token, "stripe-width") == 0 ||
 912                            strcmp(token, "stripe_width") == 0) {
 913                         if (!arg) {
 914                                 r_usage++;
 915                                 continue;
 916                         }
 917                         stripe_width = strtoul(arg, &p, 0);
 918                         if (*p || (stripe_width == 0)) {
 919                                 fprintf(stderr,
 920                                         _("Invalid RAID stripe-width: %s\n"),
 921                                         arg);
 922                                 r_usage++;
 923                                 continue;
 924                         }
 925                         stripe_width_set = 1;
 926                 } else if (strcmp(token, "hash_alg") == 0 ||
 927                            strcmp(token, "hash-alg") == 0) {
 928                         if (!arg) {
 929                                 r_usage++;
 930                                 continue;
 931                         }
 932                         hash_alg = e2p_string2hash(arg);
 933                         if (hash_alg < 0) {
 934                                 fprintf(stderr,
 935                                         _("Invalid hash algorithm: %s\n"),
 936                                         arg);
 937                                 r_usage++;
 938                                 continue;
 939                         }
 940                         fs->super->s_def_hash_version = hash_alg;
 941                         printf(_("Setting default hash algorithm "
 942                                  "to %s (%d)\n"),
 943                                arg, hash_alg);
 944                         ext2fs_mark_super_dirty(fs);
 945                 } else
 946                         r_usage++;
 947         }
 948         if (r_usage) {
 949                 fprintf(stderr, _("\nBad options specified.\n\n"
 950                         "Extended options are separated by commas, "
 951                         "and may take an argument which\n"
 952                         "\tis set off by an equals ('=') sign.\n\n"
 953                         "Valid extended options are:\n"
 954                         "\tstride=<RAID per-disk chunk size in blocks>\n"
 955                         "\tstripe_width=<RAID stride*data disks in blocks>\n"
 956                         "\thash_alg=<hash algorithm>\n"
 957                         "\ttest_fs\n"
 958                         "\t^test_fs\n"));
 959                 free(buf);
 960                 exit(1);
 961         }
 962         free(buf);
 963 }
 964
 965 /*
 966  * Fill in the block bitmap bmap with the information regarding the
 967  * blocks to be moved
 968  */
 969 static int get_move_bitmaps(ext2_filsys fs, int new_ino_blks_per_grp,
 970                             ext2fs_block_bitmap bmap)
 971 {
 972         dgrp_t i;
 973         int retval;
 974         ext2_badblocks_list bb_list = 0;
 975         blk_t j, needed_blocks = 0;
 976         blk_t start_blk, end_blk;
 977
 978         retval = ext2fs_read_bb_inode(fs, &bb_list);
 979         if (retval)
 980                 return retval;
 981
 982         for (i = 0; i < fs->group_desc_count; i++) {
 983                 start_blk = fs->group_desc[i].bg_inode_table +
 984                                         fs->inode_blocks_per_group;
 985
 986                 end_blk = fs->group_desc[i].bg_inode_table +
 987                                         new_ino_blks_per_grp;
 988
 989                 for (j = start_blk; j < end_blk; j++) {
 990                         if (ext2fs_test_block_bitmap2(fs->block_map, j)) {
 991                                 /*
 992                                  * IF the block is a bad block we fail
 993                                  */
 994                                 if (ext2fs_badblocks_list_test(bb_list, j)) {
 995                                         ext2fs_badblocks_list_free(bb_list);
 996                                         return ENOSPC;
 997                                 }
 998
 999                                 ext2fs_mark_block_bitmap2(bmap, j);
1000                         } else {
1001                                 /*
1002                                  * We are going to use this block for
1003                                  * inode table. So mark them used.
1004                                  */
1005                                 ext2fs_mark_block_bitmap2(fs->block_map, j);
1006                         }
1007                 }
1008                 needed_blocks += end_blk - start_blk;
1009         }
1010
1011         ext2fs_badblocks_list_free(bb_list);
1012         if (needed_blocks > ext2fs_free_blocks_count(fs->super))
1013                 return ENOSPC;
1014
1015         return 0;
1016 }
1017
1018 static int ext2fs_is_meta_block(ext2_filsys fs, blk_t blk)
1019 {
1020         dgrp_t group;
1021         group = ext2fs_group_of_blk(fs, blk);
1022         if (fs->group_desc[group].bg_block_bitmap == blk)
1023                 return 1;
1024         if (fs->group_desc[group].bg_inode_bitmap == blk)
1025                 return 1;
1026         return 0;
1027 }
1028
1029 static int ext2fs_is_block_in_group(ext2_filsys fs, dgrp_t group, blk_t blk)
1030 {
1031         blk_t start_blk, end_blk;
1032         start_blk = fs->super->s_first_data_block +
1033                         EXT2_BLOCKS_PER_GROUP(fs->super) * group;
1034         /*
1035          * We cannot get new block beyond end_blk for for the last block group
1036          * so we can check with EXT2_BLOCKS_PER_GROUP even for last block group
1037          */
1038         end_blk   = start_blk + EXT2_BLOCKS_PER_GROUP(fs->super);
1039         if (blk >= start_blk && blk <= end_blk)
1040                 return 1;
1041         return 0;
1042 }
1043
1044 static int move_block(ext2_filsys fs, ext2fs_block_bitmap bmap)
1045 {
1046
1047         char *buf;
1048         dgrp_t group;
1049         errcode_t retval;
1050         int meta_data = 0;
1051         blk_t blk, new_blk, goal;
1052         struct blk_move *bmv;
1053
1054         retval = ext2fs_get_mem(fs->blocksize, &buf);
1055         if (retval)
1056                 return retval;
1057
1058         for (new_blk = blk = fs->super->s_first_data_block;
1059              blk < ext2fs_blocks_count(fs->super); blk++) {
1060                 if (!ext2fs_test_block_bitmap2(bmap, blk))
1061                         continue;
1062
1063                 if (ext2fs_is_meta_block(fs, blk)) {
1064                         /*
1065                          * If the block is mapping a fs meta data block
1066                          * like group desc/block bitmap/inode bitmap. We
1067                          * should find a block in the same group and fix
1068                          * the respective fs metadata pointers. Otherwise
1069                          * fail
1070                          */
1071                         group = ext2fs_group_of_blk(fs, blk);
1072                         goal = ext2fs_group_first_block(fs, group);
1073                         meta_data = 1;
1074
1075                 } else {
1076                         goal = new_blk;
1077                 }
1078                 retval = ext2fs_new_block(fs, goal, NULL, &new_blk);
1079                 if (retval)
1080                         goto err_out;
1081
1082                 /* new fs meta data block should be in the same group */
1083                 if (meta_data && !ext2fs_is_block_in_group(fs, group, new_blk)) {
1084                         retval = ENOSPC;
1085                         goto err_out;
1086                 }
1087
1088                 /* Mark this block as allocated */
1089                 ext2fs_mark_block_bitmap2(fs->block_map, new_blk);
1090
1091                 /* Add it to block move list */
1092                 retval = ext2fs_get_mem(sizeof(struct blk_move), &bmv);
1093                 if (retval)
1094                         goto err_out;
1095
1096                 bmv->old_loc = blk;
1097                 bmv->new_loc = new_blk;
1098
1099                 list_add(&(bmv->list), &blk_move_list);
1100
1101                 retval = io_channel_read_blk64(fs->io, blk, 1, buf);
1102                 if (retval)
1103                         goto err_out;
1104
1105                 retval = io_channel_write_blk64(fs->io, new_blk, 1, buf);
1106                 if (retval)
1107                         goto err_out;
1108         }
1109
1110 err_out:
1111         ext2fs_free_mem(&buf);
1112         return retval;
1113 }
1114
1115 static blk_t translate_block(blk_t blk)
1116 {
1117         struct list_head *entry;
1118         struct blk_move *bmv;
1119
1120         list_for_each(entry, &blk_move_list) {
1121                 bmv = list_entry(entry, struct blk_move, list);
1122                 if (bmv->old_loc == blk)
1123                         return bmv->new_loc;
1124         }
1125
1126         return 0;
1127 }
1128
1129 static int process_block(ext2_filsys fs EXT2FS_ATTR((unused)),
1130                          blk_t *block_nr,
1131                          e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
1132                          blk_t ref_block EXT2FS_ATTR((unused)),
1133                          int ref_offset EXT2FS_ATTR((unused)),
1134                          void *priv_data)
1135 {
1136         int ret = 0;
1137         blk_t new_blk;
1138         ext2fs_block_bitmap bmap = (ext2fs_block_bitmap) priv_data;
1139
1140         if (!ext2fs_test_block_bitmap2(bmap, *block_nr))
1141                 return 0;
1142         new_blk = translate_block(*block_nr);
1143         if (new_blk) {
1144                 *block_nr = new_blk;
1145                 /*
1146                  * This will force the ext2fs_write_inode in the iterator
1147                  */
1148                 ret |= BLOCK_CHANGED;
1149         }
1150
1151         return ret;
1152 }
1153
1154 static int inode_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
1155 {
1156         errcode_t retval = 0;
1157         ext2_ino_t ino;
1158         blk_t blk;
1159         char *block_buf = 0;
1160         struct ext2_inode inode;
1161         ext2_inode_scan scan = NULL;
1162
1163         retval = ext2fs_get_mem(fs->blocksize * 3, &block_buf);
1164         if (retval)
1165                 return retval;
1166
1167         retval = ext2fs_open_inode_scan(fs, 0, &scan);
1168         if (retval)
1169                 goto err_out;
1170
1171         while (1) {
1172                 retval = ext2fs_get_next_inode(scan, &ino, &inode);
1173                 if (retval)
1174                         goto err_out;
1175
1176                 if (!ino)
1177                         break;
1178
1179                 if (inode.i_links_count == 0)
1180                         continue; /* inode not in use */
1181
1182                 /* FIXME!!
1183                  * If we end up modifying the journal inode
1184                  * the sb->s_jnl_blocks will differ. But a
1185                  * subsequent e2fsck fixes that.
1186                  * Do we need to fix this ??
1187                  */
1188
1189                 if (ext2fs_file_acl_block(&inode) &&
1190                     ext2fs_test_block_bitmap2(bmap,
1191                                               ext2fs_file_acl_block(&inode))) {
1192                         blk = translate_block(ext2fs_file_acl_block(&inode));
1193                         if (!blk)
1194                                 continue;
1195
1196                         ext2fs_file_acl_block_set(&inode, blk);
1197
1198                         /*
1199                          * Write the inode to disk so that inode table
1200                          * resizing can work
1201                          */
1202                         retval = ext2fs_write_inode(fs, ino, &inode);
1203                         if (retval)
1204                                 goto err_out;
1205                 }
1206
1207                 if (!ext2fs_inode_has_valid_blocks(&inode))
1208                         continue;
1209
1210                 retval = ext2fs_block_iterate2(fs, ino, 0, block_buf,
1211                                                process_block, bmap);
1212                 if (retval)
1213                         goto err_out;
1214
1215         }
1216
1217 err_out:
1218         ext2fs_free_mem(&block_buf);
1219
1220         return retval;
1221 }
1222
1223 /*
1224  * We need to scan for inode and block bitmaps that may need to be
1225  * moved.  This can take place if the filesystem was formatted for
1226  * RAID arrays using the mke2fs's extended option "stride".
1227  */
1228 static int group_desc_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
1229 {
1230         dgrp_t i;
1231         blk_t blk, new_blk;
1232
1233         for (i = 0; i < fs->group_desc_count; i++) {
1234                 blk = fs->group_desc[i].bg_block_bitmap;
1235                 if (ext2fs_test_block_bitmap2(bmap, blk)) {
1236                         new_blk = translate_block(blk);
1237                         if (!new_blk)
1238                                 continue;
1239                         fs->group_desc[i].bg_block_bitmap = new_blk;
1240                 }
1241
1242                 blk = fs->group_desc[i].bg_inode_bitmap;
1243                 if (ext2fs_test_block_bitmap2(bmap, blk)) {
1244                         new_blk = translate_block(blk);
1245                         if (!new_blk)
1246                                 continue;
1247                         fs->group_desc[i].bg_inode_bitmap = new_blk;
1248                 }
1249         }
1250         return 0;
1251 }
1252
1253 static int expand_inode_table(ext2_filsys fs, unsigned long new_ino_size)
1254 {
1255         dgrp_t i;
1256         blk_t blk;
1257         errcode_t retval;
1258         int new_ino_blks_per_grp;
1259         unsigned int j;
1260         char *old_itable = NULL, *new_itable = NULL;
1261         char *tmp_old_itable = NULL, *tmp_new_itable = NULL;
1262         unsigned long old_ino_size;
1263         int old_itable_size, new_itable_size;
1264
1265         old_itable_size = fs->inode_blocks_per_group * fs->blocksize;
1266         old_ino_size = EXT2_INODE_SIZE(fs->super);
1267
1268         new_ino_blks_per_grp = ext2fs_div_ceil(
1269                                         EXT2_INODES_PER_GROUP(fs->super) *
1270                                         new_ino_size,
1271                                         fs->blocksize);
1272
1273         new_itable_size = new_ino_blks_per_grp * fs->blocksize;
1274
1275         retval = ext2fs_get_mem(old_itable_size, &old_itable);
1276         if (retval)
1277                 return retval;
1278
1279         retval = ext2fs_get_mem(new_itable_size, &new_itable);
1280         if (retval)
1281                 goto err_out;
1282
1283         tmp_old_itable = old_itable;
1284         tmp_new_itable = new_itable;
1285
1286         for (i = 0; i < fs->group_desc_count; i++) {
1287                 blk = fs->group_desc[i].bg_inode_table;
1288                 retval = io_channel_read_blk64(fs->io, blk,
1289                                 fs->inode_blocks_per_group, old_itable);
1290                 if (retval)
1291                         goto err_out;
1292
1293                 for (j = 0; j < EXT2_INODES_PER_GROUP(fs->super); j++) {
1294                         memcpy(new_itable, old_itable, old_ino_size);
1295
1296                         memset(new_itable+old_ino_size, 0,
1297                                         new_ino_size - old_ino_size);
1298
1299                         new_itable += new_ino_size;
1300                         old_itable += old_ino_size;
1301                 }
1302
1303                 /* reset the pointer */
1304                 old_itable = tmp_old_itable;
1305                 new_itable = tmp_new_itable;
1306
1307                 retval = io_channel_write_blk64(fs->io, blk,
1308                                         new_ino_blks_per_grp, new_itable);
1309                 if (retval)
1310                         goto err_out;
1311         }
1312
1313         /* Update the meta data */
1314         fs->inode_blocks_per_group = new_ino_blks_per_grp;
1315         fs->super->s_inode_size = new_ino_size;
1316
1317 err_out:
1318         if (old_itable)
1319                 ext2fs_free_mem(&old_itable);
1320
1321         if (new_itable)
1322                 ext2fs_free_mem(&new_itable);
1323
1324         return retval;
1325 }
1326
1327 static errcode_t ext2fs_calculate_summary_stats(ext2_filsys fs)
1328 {
1329         blk_t           blk;
1330         ext2_ino_t      ino;
1331         unsigned int    group = 0;
1332         unsigned int    count = 0;
1333         int             total_free = 0;
1334         int             group_free = 0;
1335
1336         /*
1337          * First calculate the block statistics
1338          */
1339         for (blk = fs->super->s_first_data_block;
1340              blk < ext2fs_blocks_count(fs->super); blk++) {
1341                 if (!ext2fs_fast_test_block_bitmap2(fs->block_map, blk)) {
1342                         group_free++;
1343                         total_free++;
1344                 }
1345                 count++;
1346                 if ((count == fs->super->s_blocks_per_group) ||
1347                     (blk == ext2fs_blocks_count(fs->super)-1)) {
1348                         fs->group_desc[group++].bg_free_blocks_count =
1349                                 group_free;
1350                         count = 0;
1351                         group_free = 0;
1352                 }
1353         }
1354         ext2fs_free_blocks_count_set(fs->super, total_free);
1355
1356         /*
1357          * Next, calculate the inode statistics
1358          */
1359         group_free = 0;
1360         total_free = 0;
1361         count = 0;
1362         group = 0;
1363
1364         /* Protect loop from wrap-around if s_inodes_count maxed */
1365         for (ino = 1; ino <= fs->super->s_inodes_count && ino > 0; ino++) {
1366                 if (!ext2fs_fast_test_inode_bitmap2(fs->inode_map, ino)) {
1367                         group_free++;
1368                         total_free++;
1369                 }
1370                 count++;
1371                 if ((count == fs->super->s_inodes_per_group) ||
1372                     (ino == fs->super->s_inodes_count)) {
1373                         fs->group_desc[group++].bg_free_inodes_count =
1374                                 group_free;
1375                         count = 0;
1376                         group_free = 0;
1377                 }
1378         }
1379         fs->super->s_free_inodes_count = total_free;
1380         ext2fs_mark_super_dirty(fs);
1381         return 0;
1382 }
1383
1384 #define list_for_each_safe(pos, pnext, head) \
1385         for (pos = (head)->next, pnext = pos->next; pos != (head); \
1386              pos = pnext, pnext = pos->next)
1387
1388 static void free_blk_move_list(void)
1389 {
1390         struct list_head *entry, *tmp;
1391         struct blk_move *bmv;
1392
1393         list_for_each_safe(entry, tmp, &blk_move_list) {
1394                 bmv = list_entry(entry, struct blk_move, list);
1395                 list_del(entry);
1396                 ext2fs_free_mem(&bmv);
1397         }
1398         return;
1399 }
1400
1401 static int resize_inode(ext2_filsys fs, unsigned long new_size)
1402 {
1403         errcode_t retval;
1404         int new_ino_blks_per_grp;
1405         ext2fs_block_bitmap bmap;
1406
1407         ext2fs_read_inode_bitmap(fs);
1408         ext2fs_read_block_bitmap(fs);
1409         INIT_LIST_HEAD(&blk_move_list);
1410
1411
1412         new_ino_blks_per_grp = ext2fs_div_ceil(
1413                                         EXT2_INODES_PER_GROUP(fs->super)*
1414                                         new_size,
1415                                         fs->blocksize);
1416
1417         /* We may change the file system.
1418          * Mark the file system as invalid so that
1419          * the user is prompted to run fsck.
1420          */
1421         fs->super->s_state &= ~EXT2_VALID_FS;
1422
1423         retval = ext2fs_allocate_block_bitmap(fs, _("blocks to be moved"),
1424                                                 &bmap);
1425         if (retval) {
1426                 fputs(_("Failed to allocate block bitmap when "
1427                                 "increasing inode size\n"), stderr);
1428                 return retval;
1429         }
1430         retval = get_move_bitmaps(fs, new_ino_blks_per_grp, bmap);
1431         if (retval) {
1432                 fputs(_("Not enough space to increase inode size \n"), stderr);
1433                 goto err_out;
1434         }
1435         retval = move_block(fs, bmap);
1436         if (retval) {
1437                 fputs(_("Failed to relocate blocks during inode resize \n"),
1438                       stderr);
1439                 goto err_out;
1440         }
1441         retval = inode_scan_and_fix(fs, bmap);
1442         if (retval)
1443                 goto err_out_undo;
1444
1445         retval = group_desc_scan_and_fix(fs, bmap);
1446         if (retval)
1447                 goto err_out_undo;
1448
1449         retval = expand_inode_table(fs, new_size);
1450         if (retval)
1451                 goto err_out_undo;
1452
1453         ext2fs_calculate_summary_stats(fs);
1454
1455         fs->super->s_state |= EXT2_VALID_FS;
1456         /* mark super block and block bitmap as dirty */
1457         ext2fs_mark_super_dirty(fs);
1458         ext2fs_mark_bb_dirty(fs);
1459
1460 err_out:
1461         free_blk_move_list();
1462         ext2fs_free_block_bitmap(bmap);
1463
1464         return retval;
1465
1466 err_out_undo:
1467         free_blk_move_list();
1468         ext2fs_free_block_bitmap(bmap);
1469         fputs(_("Error in resizing the inode size.\n"
1470                         "Run e2undo to undo the "
1471                         "file system changes. \n"), stderr);
1472
1473         return retval;
1474 }
1475
1476 static int tune2fs_setup_tdb(const char *name, io_manager *io_ptr)
1477 {
1478         errcode_t retval = 0;
1479         const char *tdb_dir;
1480         char *tdb_file;
1481         char *dev_name, *tmp_name;
1482
1483 #if 0 /* FIXME!! */
1484         /*
1485          * Configuration via a conf file would be
1486          * nice
1487          */
1488         profile_get_string(profile, "scratch_files",
1489                                         "directory", 0, 0,
1490                                         &tdb_dir);
1491 #endif
1492         tmp_name = strdup(name);
1493         if (!tmp_name) {
1494         alloc_fn_fail:
1495                 com_err(program_name, ENOMEM,
1496                         _("Couldn't allocate memory for tdb filename\n"));
1497                 return ENOMEM;
1498         }
1499         dev_name = basename(tmp_name);
1500
1501         tdb_dir = getenv("E2FSPROGS_UNDO_DIR");
1502         if (!tdb_dir)
1503                 tdb_dir = "/var/lib/e2fsprogs";
1504
1505         if (!strcmp(tdb_dir, "none") || (tdb_dir[0] == 0) ||
1506             access(tdb_dir, W_OK))
1507                 return 0;
1508
1509         tdb_file = malloc(strlen(tdb_dir) + 9 + strlen(dev_name) + 7 + 1);
1510         if (!tdb_file)
1511                 goto alloc_fn_fail;
1512         sprintf(tdb_file, "%s/tune2fs-%s.e2undo", tdb_dir, dev_name);
1513
1514         if (!access(tdb_file, F_OK)) {
1515                 if (unlink(tdb_file) < 0) {
1516                         retval = errno;
1517                         com_err(program_name, retval,
1518                                 _("while trying to delete %s"),
1519                                 tdb_file);
1520                         free(tdb_file);
1521                         return retval;
1522                 }
1523         }
1524
1525         set_undo_io_backing_manager(*io_ptr);
1526         *io_ptr = undo_io_manager;
1527         set_undo_io_backup_file(tdb_file);
1528         printf(_("To undo the tune2fs operation please run "
1529                  "the command\n    e2undo %s %s\n\n"),
1530                  tdb_file, name);
1531         free(tdb_file);
1532         free(tmp_name);
1533         return retval;
1534 }
1535
1536 int main(int argc, char **argv)
1537 {
1538         errcode_t retval;
1539         ext2_filsys fs;
1540         struct ext2_super_block *sb;
1541         io_manager io_ptr, io_ptr_orig = NULL;
1542
1543 #ifdef ENABLE_NLS
1544         setlocale(LC_MESSAGES, "");
1545         setlocale(LC_CTYPE, "");
1546         bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
1547         textdomain(NLS_CAT_NAME);
1548 #endif
1549         if (argc && *argv)
1550                 program_name = *argv;
1551         add_error_table(&et_ext2_error_table);
1552
1553 #ifdef CONFIG_BUILD_FINDFS
1554         if (strcmp(get_progname(argv[0]), "findfs") == 0)
1555                 do_findfs(argc, argv);
1556 #endif
1557         if (strcmp(get_progname(argv[0]), "e2label") == 0)
1558                 parse_e2label_options(argc, argv);
1559         else
1560                 parse_tune2fs_options(argc, argv);
1561
1562 #ifdef CONFIG_TESTIO_DEBUG
1563         if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_DEBUG")) {
1564                 io_ptr = test_io_manager;
1565                 test_io_backing_manager = unix_io_manager;
1566         } else
1567 #endif
1568                 io_ptr = unix_io_manager;
1569
1570 retry_open:
1571         retval = ext2fs_open2(device_name, io_options, open_flag,
1572                               0, 0, io_ptr, &fs);
1573         if (retval) {
1574                         com_err(program_name, retval,
1575                                 _("while trying to open %s"),
1576                         device_name);
1577                 fprintf(stderr,
1578                         _("Couldn't find valid filesystem superblock.\n"));
1579                 exit(1);
1580         }
1581
1582         if (I_flag && !io_ptr_orig) {
1583                 /*
1584                  * Check the inode size is right so we can issue an
1585                  * error message and bail before setting up the tdb
1586                  * file.
1587                  */
1588                 if (new_inode_size == EXT2_INODE_SIZE(fs->super)) {
1589                         fprintf(stderr, _("The inode size is already %lu\n"),
1590                                 new_inode_size);
1591                         exit(1);
1592                 }
1593                 if (new_inode_size < EXT2_INODE_SIZE(fs->super)) {
1594                         fprintf(stderr, _("Shrinking the inode size is "
1595                                           "not supported\n"));
1596                         exit(1);
1597                 }
1598
1599                 /*
1600                  * If inode resize is requested use the
1601                  * Undo I/O manager
1602                  */
1603                 io_ptr_orig = io_ptr;
1604                 retval = tune2fs_setup_tdb(device_name, &io_ptr);
1605                 if (retval)
1606                         exit(1);
1607                 if (io_ptr != io_ptr_orig) {
1608                         ext2fs_close(fs);
1609                         goto retry_open;
1610                 }
1611         }
1612
1613         sb = fs->super;
1614         fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
1615
1616         if (print_label) {
1617                 /* For e2label emulation */
1618                 printf("%.*s\n", (int) sizeof(sb->s_volume_name),
1619                        sb->s_volume_name);
1620                 remove_error_table(&et_ext2_error_table);
1621                 exit(0);
1622         }
1623
1624         retval = ext2fs_check_if_mounted(device_name, &mount_flags);
1625         if (retval) {
1626                 com_err("ext2fs_check_if_mount", retval,
1627                         _("while determining whether %s is mounted."),
1628                         device_name);
1629                 exit(1);
1630         }
1631         /* Normally we only need to write out the superblock */
1632         fs->flags |= EXT2_FLAG_SUPER_ONLY;
1633
1634         if (c_flag) {
1635                 sb->s_max_mnt_count = max_mount_count;
1636                 ext2fs_mark_super_dirty(fs);
1637                 printf(_("Setting maximal mount count to %d\n"),
1638                        max_mount_count);
1639         }
1640         if (C_flag) {
1641                 sb->s_mnt_count = mount_count;
1642                 ext2fs_mark_super_dirty(fs);
1643                 printf(_("Setting current mount count to %d\n"), mount_count);
1644         }
1645         if (e_flag) {
1646                 sb->s_errors = errors;
1647                 ext2fs_mark_super_dirty(fs);
1648                 printf(_("Setting error behavior to %d\n"), errors);
1649         }
1650         if (g_flag) {
1651                 sb->s_def_resgid = resgid;
1652                 ext2fs_mark_super_dirty(fs);
1653                 printf(_("Setting reserved blocks gid to %lu\n"), resgid);
1654         }
1655         if (i_flag) {
1656                 sb->s_checkinterval = interval;
1657                 ext2fs_mark_super_dirty(fs);
1658                 printf(_("Setting interval between checks to %lu seconds\n"),
1659                        interval);
1660         }
1661         if (m_flag) {
1662                 ext2fs_r_blocks_count_set(sb, reserved_ratio *
1663                                           ext2fs_blocks_count(sb) / 100.0);
1664                 ext2fs_mark_super_dirty(fs);
1665                 printf (_("Setting reserved blocks percentage to %g%% (%llu blocks)\n"),
1666                         reserved_ratio, ext2fs_r_blocks_count(sb));
1667         }
1668         if (r_flag) {
1669                 if (reserved_blocks >= ext2fs_blocks_count(sb)/2) {
1670                         com_err(program_name, 0,
1671                                 _("reserved blocks count is too big (%llu)"),
1672                                 reserved_blocks);
1673                         exit(1);
1674                 }
1675                 ext2fs_r_blocks_count_set(sb, reserved_blocks);
1676                 ext2fs_mark_super_dirty(fs);
1677                 printf(_("Setting reserved blocks count to %llu\n"),
1678                        reserved_blocks);
1679         }
1680         if (s_flag == 1) {
1681                 if (sb->s_feature_ro_compat &
1682                     EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER)
1683                         fputs(_("\nThe filesystem already has sparse "
1684                                 "superblocks.\n"), stderr);
1685                 else {
1686                         sb->s_feature_ro_compat |=
1687                                 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
1688                         sb->s_state &= ~EXT2_VALID_FS;
1689                         ext2fs_mark_super_dirty(fs);
1690                         printf(_("\nSparse superblock flag set.  %s"),
1691                                _(please_fsck));
1692                 }
1693         }
1694         if (s_flag == 0) {
1695                 fputs(_("\nClearing the sparse superflag not supported.\n"),
1696                       stderr);
1697                 exit(1);
1698         }
1699         if (T_flag) {
1700                 sb->s_lastcheck = last_check_time;
1701                 ext2fs_mark_super_dirty(fs);
1702                 printf(_("Setting time filesystem last checked to %s\n"),
1703                        ctime(&last_check_time));
1704         }
1705         if (u_flag) {
1706                 sb->s_def_resuid = resuid;
1707                 ext2fs_mark_super_dirty(fs);
1708                 printf(_("Setting reserved blocks uid to %lu\n"), resuid);
1709         }
1710         if (L_flag) {
1711                 if (strlen(new_label) > sizeof(sb->s_volume_name))
1712                         fputs(_("Warning: label too long, truncating.\n"),
1713                               stderr);
1714                 memset(sb->s_volume_name, 0, sizeof(sb->s_volume_name));
1715                 strncpy(sb->s_volume_name, new_label,
1716                         sizeof(sb->s_volume_name));
1717                 ext2fs_mark_super_dirty(fs);
1718         }
1719         if (M_flag) {
1720                 memset(sb->s_last_mounted, 0, sizeof(sb->s_last_mounted));
1721                 strncpy(sb->s_last_mounted, new_last_mounted,
1722                         sizeof(sb->s_last_mounted));
1723                 ext2fs_mark_super_dirty(fs);
1724         }
1725         if (mntopts_cmd)
1726                 update_mntopts(fs, mntopts_cmd);
1727         if (features_cmd)
1728                 update_feature_set(fs, features_cmd);
1729         if (extended_cmd)
1730                 parse_extended_opts(fs, extended_cmd);
1731         if (journal_size || journal_device)
1732                 add_journal(fs);
1733
1734         if (U_flag) {
1735                 int set_csum = 0;
1736                 dgrp_t i;
1737
1738                 if (sb->s_feature_ro_compat &
1739                     EXT4_FEATURE_RO_COMPAT_GDT_CSUM) {
1740                         /*
1741                          * Determine if the block group checksums are
1742                          * correct so we know whether or not to set
1743                          * them later on.
1744                          */
1745                         for (i = 0; i < fs->group_desc_count; i++)
1746                                 if (!ext2fs_group_desc_csum_verify(fs, i))
1747                                         break;
1748                         if (i >= fs->group_desc_count)
1749                                 set_csum = 1;
1750                 }
1751                 if ((strcasecmp(new_UUID, "null") == 0) ||
1752                     (strcasecmp(new_UUID, "clear") == 0)) {
1753                         uuid_clear(sb->s_uuid);
1754                 } else if (strcasecmp(new_UUID, "time") == 0) {
1755                         uuid_generate_time(sb->s_uuid);
1756                 } else if (strcasecmp(new_UUID, "random") == 0) {
1757                         uuid_generate(sb->s_uuid);
1758                 } else if (uuid_parse(new_UUID, sb->s_uuid)) {
1759                         com_err(program_name, 0, _("Invalid UUID format\n"));
1760                         exit(1);
1761                 }
1762                 if (set_csum) {
1763                         for (i = 0; i < fs->group_desc_count; i++)
1764                                 ext2fs_group_desc_csum_set(fs, i);
1765                         fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1766                 }
1767                 ext2fs_mark_super_dirty(fs);
1768         }
1769         if (I_flag) {
1770                 if (mount_flags & EXT2_MF_MOUNTED) {
1771                         fputs(_("The inode size may only be "
1772                                 "changed when the filesystem is "
1773                                 "unmounted.\n"), stderr);
1774                         exit(1);
1775                 }
1776                 if (fs->super->s_feature_incompat &
1777                     EXT4_FEATURE_INCOMPAT_FLEX_BG) {
1778                         fputs(_("Changing the inode size not supported for "
1779                                 "filesystems with the flex_bg\n"
1780                                 "feature enabled.\n"),
1781                               stderr);
1782                         exit(1);
1783                 }
1784                 /*
1785                  * We want to update group descriptor also
1786                  * with the new free inode count
1787                  */
1788                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1789                 if (resize_inode(fs, new_inode_size) == 0) {
1790                         printf(_("Setting inode size %lu\n"),
1791                                                         new_inode_size);
1792                 }
1793         }
1794
1795         if (l_flag)
1796                 list_super(sb);
1797         if (stride_set) {
1798                 sb->s_raid_stride = stride;
1799                 ext2fs_mark_super_dirty(fs);
1800                 printf(_("Setting stride size to %d\n"), stride);
1801         }
1802         if (stripe_width_set) {
1803                 sb->s_raid_stripe_width = stripe_width;
1804                 ext2fs_mark_super_dirty(fs);
1805                 printf(_("Setting stripe width to %d\n"), stripe_width);
1806         }
1807         free(device_name);
1808         remove_error_table(&et_ext2_error_table);
1809         return (ext2fs_close(fs) ? 1 : 0);
1810 }