misc/tune2fs.c

   1 /*
   2  * tune2fs.c - Change the file system parameters on an ext2 file system
   3  *
   4  * Copyright (C) 1992, 1993, 1994  Remy Card <card@masi.ibp.fr>
   5  *                                 Laboratoire MASI, Institut Blaise Pascal
   6  *                                 Universite Pierre et Marie Curie (Paris VI)
   7  *
   8  * Copyright 1995, 1996, 1997, 1998, 1999, 2000 by Theodore Ts'o.
   9  *
  10  * %Begin-Header%
  11  * This file may be redistributed under the terms of the GNU Public
  12  * License.
  13  * %End-Header%
  14  */
  15
  16 /*
  17  * History:
  18  * 93/06/01     - Creation
  19  * 93/10/31     - Added the -c option to change the maximal mount counts
  20  * 93/12/14     - Added -l flag to list contents of superblock
  21  *                M.J.E. Mol (marcel@duteca.et.tudelft.nl)
  22  *                F.W. ten Wolde (franky@duteca.et.tudelft.nl)
  23  * 93/12/29     - Added the -e option to change errors behavior
  24  * 94/02/27     - Ported to use the ext2fs library
  25  * 94/03/06     - Added the checks interval from Uwe Ohse (uwe@tirka.gun.de)
  26  */
  27
  28 #define _XOPEN_SOURCE 600 /* for inclusion of strptime() */
  29 #include "config.h"
  30 #include <fcntl.h>
  31 #include <grp.h>
  32 #ifdef HAVE_GETOPT_H
  33 #include <getopt.h>
  34 #else
  35 extern char *optarg;
  36 extern int optind;
  37 #endif
  38 #include <pwd.h>
  39 #include <stdio.h>
  40 #ifdef HAVE_STDLIB_H
  41 #include <stdlib.h>
  42 #endif
  43 #ifdef HAVE_STRINGS_H
  44 #include <strings.h>    /* for strcasecmp() */
  45 #else
  46 #define _BSD_SOURCE     /* for inclusion of strcasecmp() via <string.h> */
  47 #define _DEFAULT_SOURCE   /* since glibc 2.20 _BSD_SOURCE is deprecated */
  48 #endif
  49 #include <string.h>
  50 #include <time.h>
  51 #include <unistd.h>
  52 #include <sys/types.h>
  53 #include <libgen.h>
  54 #include <limits.h>     /* for PATH_MAX */
  55 #ifdef HAVE_SYS_IOCTL_H
  56 #include <sys/ioctl.h>
  57 #endif
  58
  59 #ifndef PATH_MAX
  60 #define PATH_MAX 4096
  61 #endif
  62
  63 #include "ext2fs/ext2_fs.h"
  64 #include "ext2fs/ext2fs.h"
  65 #include "ext2fs/kernel-jbd.h"
  66 #include "et/com_err.h"
  67 #include "support/plausible.h"
  68 #include "support/quotaio.h"
  69 #include "support/devname.h"
  70 #include "uuid/uuid.h"
  71 #include "e2p/e2p.h"
  72 #include "util.h"
  73 #include "blkid/blkid.h"
  74
  75 #include "../version.h"
  76 #include "support/nls-enable.h"
  77
  78 #define QOPT_ENABLE     (1)
  79 #define QOPT_DISABLE    (-1)
  80
  81 #ifndef FS_IOC_SETFSLABEL
  82 #define FSLABEL_MAX 256
  83 #define FS_IOC_SETFSLABEL       _IOW(0x94, 50, char[FSLABEL_MAX])
  84 #endif
  85
  86 #ifndef FS_IOC_GETFSLABEL
  87 #define FS_IOC_GETFSLABEL       _IOR(0x94, 49, char[FSLABEL_MAX])
  88 #endif
  89
  90 struct fsuuid {
  91         __u32   fsu_len;
  92         __u32   fsu_flags;
  93         __u8    fsu_uuid[];
  94 };
  95
  96 #ifndef EXT4_IOC_GETFSUUID
  97 #define EXT4_IOC_GETFSUUID      _IOR('f', 44, struct fsuuid)
  98 #endif
  99
 100 #ifndef EXT4_IOC_SETFSUUID
 101 #define EXT4_IOC_SETFSUUID      _IOW('f', 44, struct fsuuid)
 102 #endif
 103
 104 extern int ask_yn(const char *string, int def);
 105
 106 const char *program_name = "tune2fs";
 107 char *device_name;
 108 char *new_label, *new_last_mounted, *requested_uuid;
 109 char *io_options;
 110 static int c_flag, C_flag, e_flag, f_flag, g_flag, i_flag, l_flag, L_flag;
 111 static int m_flag, M_flag, Q_flag, r_flag, s_flag = -1, u_flag, U_flag, T_flag;
 112 static int I_flag;
 113 static int clear_mmp;
 114 static time_t last_check_time;
 115 static int print_label;
 116 static int max_mount_count, mount_count, mount_flags;
 117 static unsigned long interval;
 118 static blk64_t reserved_blocks;
 119 static double reserved_ratio;
 120 static unsigned long resgid, resuid;
 121 static unsigned short errors;
 122 static int open_flag;
 123 static char *features_cmd;
 124 static char *mntopts_cmd;
 125 static int stride, stripe_width;
 126 static int stride_set, stripe_width_set;
 127 static char *extended_cmd;
 128 static unsigned long new_inode_size;
 129 static char *ext_mount_opts;
 130 static int quota_enable[MAXQUOTAS];
 131 static int rewrite_checksums;
 132 static int feature_64bit;
 133 static int fsck_requested;
 134 static char *undo_file;
 135 int enabling_casefold;
 136
 137 int journal_size, journal_fc_size, journal_flags;
 138 char *journal_device;
 139 static blk64_t journal_location = ~0LL;
 140 static e2_blkcnt_t orphan_file_blocks;
 141
 142 static struct list_head blk_move_list;
 143
 144 struct blk_move {
 145         struct list_head list;
 146         blk64_t old_loc;
 147         blk64_t new_loc;
 148 };
 149
 150 errcode_t ext2fs_run_ext3_journal(ext2_filsys *fs);
 151
 152 static const char *fsck_explain = N_("\nThis operation requires a freshly checked filesystem.\n");
 153
 154 static const char *please_fsck = N_("Please run e2fsck -f on the filesystem.\n");
 155 static const char *please_dir_fsck =
 156                 N_("Please run e2fsck -fD on the filesystem.\n");
 157
 158 #ifdef CONFIG_BUILD_FINDFS
 159 void do_findfs(int argc, char **argv);
 160 #endif
 161
 162 #ifdef CONFIG_JBD_DEBUG         /* Enabled by configure --enable-jbd-debug */
 163 int journal_enable_debug = -1;
 164 #endif
 165
 166 static void usage(void)
 167 {
 168         fprintf(stderr,
 169                 _("Usage: %s [-c max_mounts_count] [-e errors_behavior] [-f] "
 170                   "[-g group]\n"
 171                   "\t[-i interval[d|m|w]] [-j] [-J journal_options] [-l]\n"
 172                   "\t[-m reserved_blocks_percent] [-o [^]mount_options[,...]]\n"
 173                   "\t[-r reserved_blocks_count] [-u user] [-C mount_count]\n"
 174                   "\t[-L volume_label] [-M last_mounted_dir]\n"
 175                   "\t[-O [^]feature[,...]] [-Q quota_options]\n"
 176                   "\t[-E extended-option[,...]] [-T last_check_time] "
 177                   "[-U UUID]\n\t[-I new_inode_size] [-z undo_file] device\n"),
 178                 program_name);
 179         exit(1);
 180 }
 181
 182 static __u32 ok_features[3] = {
 183         /* Compat */
 184         EXT3_FEATURE_COMPAT_HAS_JOURNAL |
 185                 EXT2_FEATURE_COMPAT_DIR_INDEX |
 186                 EXT4_FEATURE_COMPAT_FAST_COMMIT |
 187                 EXT4_FEATURE_COMPAT_STABLE_INODES |
 188                 EXT4_FEATURE_COMPAT_ORPHAN_FILE,
 189         /* Incompat */
 190         EXT2_FEATURE_INCOMPAT_FILETYPE |
 191                 EXT3_FEATURE_INCOMPAT_EXTENTS |
 192                 EXT4_FEATURE_INCOMPAT_FLEX_BG |
 193                 EXT4_FEATURE_INCOMPAT_EA_INODE|
 194                 EXT4_FEATURE_INCOMPAT_MMP |
 195                 EXT4_FEATURE_INCOMPAT_64BIT |
 196                 EXT4_FEATURE_INCOMPAT_ENCRYPT |
 197                 EXT4_FEATURE_INCOMPAT_CSUM_SEED |
 198                 EXT4_FEATURE_INCOMPAT_LARGEDIR |
 199                 EXT4_FEATURE_INCOMPAT_CASEFOLD,
 200         /* R/O compat */
 201         EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
 202                 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
 203                 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
 204                 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|
 205                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM |
 206                 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER |
 207                 EXT4_FEATURE_RO_COMPAT_QUOTA |
 208                 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM |
 209                 EXT4_FEATURE_RO_COMPAT_READONLY |
 210                 EXT4_FEATURE_RO_COMPAT_PROJECT |
 211                 EXT4_FEATURE_RO_COMPAT_VERITY
 212 };
 213
 214 static __u32 clear_ok_features[3] = {
 215         /* Compat */
 216         EXT3_FEATURE_COMPAT_HAS_JOURNAL |
 217                 EXT2_FEATURE_COMPAT_RESIZE_INODE |
 218                 EXT2_FEATURE_COMPAT_DIR_INDEX |
 219                 EXT4_FEATURE_COMPAT_FAST_COMMIT |
 220                 EXT4_FEATURE_COMPAT_ORPHAN_FILE,
 221         /* Incompat */
 222         EXT2_FEATURE_INCOMPAT_FILETYPE |
 223                 EXT4_FEATURE_INCOMPAT_FLEX_BG |
 224                 EXT4_FEATURE_INCOMPAT_MMP |
 225                 EXT4_FEATURE_INCOMPAT_64BIT |
 226                 EXT4_FEATURE_INCOMPAT_CSUM_SEED |
 227                 EXT4_FEATURE_INCOMPAT_CASEFOLD,
 228         /* R/O compat */
 229         EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
 230                 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
 231                 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
 232                 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|
 233                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM |
 234                 EXT4_FEATURE_RO_COMPAT_QUOTA |
 235                 EXT4_FEATURE_RO_COMPAT_PROJECT |
 236                 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM |
 237                 EXT4_FEATURE_RO_COMPAT_READONLY
 238 };
 239
 240 /**
 241  * Try to get journal super block if any
 242  */
 243 static int get_journal_sb(ext2_filsys jfs, char buf[SUPERBLOCK_SIZE])
 244 {
 245         int retval;
 246         journal_superblock_t *jsb;
 247
 248         if (!ext2fs_has_feature_journal_dev(jfs->super)) {
 249                 return EXT2_ET_UNSUPP_FEATURE;
 250         }
 251
 252         /* Get the journal superblock */
 253         if ((retval = io_channel_read_blk64(jfs->io,
 254             ext2fs_journal_sb_start(jfs->blocksize), -SUPERBLOCK_SIZE, buf))) {
 255                 com_err(program_name, retval, "%s",
 256                 _("while reading journal superblock"));
 257                 return retval;
 258         }
 259
 260         jsb = (journal_superblock_t *) buf;
 261         if ((jsb->s_header.h_magic != (unsigned)ntohl(JBD2_MAGIC_NUMBER)) ||
 262             (jsb->s_header.h_blocktype != (unsigned)ntohl(JBD2_SUPERBLOCK_V2))) {
 263                 fputs(_("Journal superblock not found!\n"), stderr);
 264                 return EXT2_ET_BAD_MAGIC;
 265         }
 266
 267         return 0;
 268 }
 269
 270 static __u8 *journal_user(__u8 uuid[UUID_SIZE], __u8 s_users[JBD2_USERS_SIZE],
 271                           int nr_users)
 272 {
 273         int i;
 274         for (i = 0; i < nr_users; i++) {
 275                 if (memcmp(uuid, &s_users[i * UUID_SIZE], UUID_SIZE) == 0)
 276                         return &s_users[i * UUID_SIZE];
 277         }
 278
 279         return NULL;
 280 }
 281
 282 /*
 283  * Remove an external journal from the filesystem
 284  */
 285 static int remove_journal_device(ext2_filsys fs)
 286 {
 287         char            *journal_path;
 288         ext2_filsys     jfs;
 289         char            buf[SUPERBLOCK_SIZE] __attribute__ ((aligned(8)));
 290         journal_superblock_t    *jsb;
 291         int             i, nr_users;
 292         errcode_t       retval;
 293         int             commit_remove_journal = 0;
 294         io_manager      io_ptr;
 295
 296         if (f_flag)
 297                 commit_remove_journal = 1; /* force removal even if error */
 298
 299         uuid_unparse(fs->super->s_journal_uuid, buf);
 300         journal_path = blkid_get_devname(NULL, "UUID", buf);
 301
 302         if (!journal_path) {
 303                 journal_path =
 304                         ext2fs_find_block_device(fs->super->s_journal_dev);
 305                 if (!journal_path)
 306                         goto no_valid_journal;
 307         }
 308
 309 #ifdef CONFIG_TESTIO_DEBUG
 310         if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
 311                 io_ptr = test_io_manager;
 312                 test_io_backing_manager = unix_io_manager;
 313         } else
 314 #endif
 315                 io_ptr = unix_io_manager;
 316         retval = ext2fs_open(journal_path, EXT2_FLAG_RW|
 317                              EXT2_FLAG_JOURNAL_DEV_OK, 0,
 318                              fs->blocksize, io_ptr, &jfs);
 319         if (retval) {
 320                 com_err(program_name, retval, "%s",
 321                         _("while trying to open external journal"));
 322                 goto no_valid_journal;
 323         }
 324
 325         if ((retval = get_journal_sb(jfs, buf))) {
 326                 if (retval == EXT2_ET_UNSUPP_FEATURE)
 327                         fprintf(stderr, _("%s is not a journal device.\n"),
 328                                 journal_path);
 329                 goto no_valid_journal;
 330         }
 331
 332         jsb = (journal_superblock_t *) buf;
 333         /* Find the filesystem UUID */
 334         nr_users = ntohl(jsb->s_nr_users);
 335         if (nr_users > JBD2_USERS_MAX) {
 336                 fprintf(stderr, _("Journal superblock is corrupted, nr_users\n"
 337                                  "is too high (%d).\n"), nr_users);
 338                 commit_remove_journal = 1;
 339                 goto no_valid_journal;
 340         }
 341
 342         if (!journal_user(fs->super->s_uuid, jsb->s_users, nr_users)) {
 343                 fputs(_("Filesystem's UUID not found on journal device.\n"),
 344                       stderr);
 345                 commit_remove_journal = 1;
 346                 goto no_valid_journal;
 347         }
 348         nr_users--;
 349         for (i = 0; i < nr_users; i++)
 350                 memcpy(&jsb->s_users[i * 16], &jsb->s_users[(i + 1) * 16], 16);
 351         jsb->s_nr_users = htonl(nr_users);
 352
 353         /* Write back the journal superblock */
 354         retval = io_channel_write_blk64(jfs->io,
 355                                         ext2fs_journal_sb_start(fs->blocksize),
 356                                         -SUPERBLOCK_SIZE, buf);
 357         if (retval) {
 358                 com_err(program_name, retval,
 359                         "while writing journal superblock.");
 360                 goto no_valid_journal;
 361         }
 362
 363         commit_remove_journal = 1;
 364
 365 no_valid_journal:
 366         if (commit_remove_journal == 0) {
 367                 fputs(_("Cannot locate journal device. It was NOT removed\n"
 368                         "Use -f option to remove missing journal device.\n"),
 369                       stderr);
 370                 return 1;
 371         }
 372         fs->super->s_journal_dev = 0;
 373         memset(fs->super->s_jnl_blocks, 0, sizeof(fs->super->s_jnl_blocks));
 374         uuid_clear(fs->super->s_journal_uuid);
 375         ext2fs_mark_super_dirty(fs);
 376         fputs(_("Journal removed\n"), stdout);
 377         free(journal_path);
 378
 379         return 0;
 380 }
 381
 382 /* Helper function for remove_journal_inode */
 383 static int release_blocks_proc(ext2_filsys fs, blk64_t *blocknr,
 384                                e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
 385                                blk64_t ref_block EXT2FS_ATTR((unused)),
 386                                int ref_offset EXT2FS_ATTR((unused)),
 387                                void *private EXT2FS_ATTR((unused)))
 388 {
 389         blk64_t block;
 390         int     group;
 391
 392         block = *blocknr;
 393         ext2fs_unmark_block_bitmap2(fs->block_map, block);
 394         group = ext2fs_group_of_blk2(fs, block);
 395         ext2fs_bg_free_blocks_count_set(fs, group, ext2fs_bg_free_blocks_count(fs, group) + 1);
 396         ext2fs_group_desc_csum_set(fs, group);
 397         ext2fs_free_blocks_count_add(fs->super, EXT2FS_CLUSTER_RATIO(fs));
 398         return 0;
 399 }
 400
 401 /*
 402  * Remove the journal inode from the filesystem
 403  */
 404 static errcode_t remove_journal_inode(ext2_filsys fs)
 405 {
 406         struct ext2_inode       inode;
 407         errcode_t               retval;
 408         ext2_ino_t              ino = fs->super->s_journal_inum;
 409
 410         retval = ext2fs_read_inode(fs, ino,  &inode);
 411         if (retval) {
 412                 com_err(program_name, retval, "%s",
 413                         _("while reading journal inode"));
 414                 return retval;
 415         }
 416         if (ino == EXT2_JOURNAL_INO) {
 417                 retval = ext2fs_read_bitmaps(fs);
 418                 if (retval) {
 419                         com_err(program_name, retval, "%s",
 420                                 _("while reading bitmaps"));
 421                         return retval;
 422                 }
 423                 retval = ext2fs_block_iterate3(fs, ino,
 424                                                BLOCK_FLAG_READ_ONLY, NULL,
 425                                                release_blocks_proc, NULL);
 426                 if (retval) {
 427                         com_err(program_name, retval, "%s",
 428                                 _("while clearing journal inode"));
 429                         return retval;
 430                 }
 431                 fs->super->s_overhead_clusters -=
 432                         EXT2FS_NUM_B2C(fs, EXT2_I_SIZE(&inode) / fs->blocksize);
 433                 memset(&inode, 0, sizeof(inode));
 434                 ext2fs_mark_bb_dirty(fs);
 435                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 436         } else
 437                 inode.i_flags &= ~EXT2_IMMUTABLE_FL;
 438         retval = ext2fs_write_inode(fs, ino, &inode);
 439         if (retval) {
 440                 com_err(program_name, retval, "%s",
 441                         _("while writing journal inode"));
 442                 return retval;
 443         }
 444         fs->super->s_journal_inum = 0;
 445         memset(fs->super->s_jnl_blocks, 0, sizeof(fs->super->s_jnl_blocks));
 446         ext2fs_mark_super_dirty(fs);
 447
 448         return 0;
 449 }
 450
 451 /*
 452  * Update the default mount options
 453  */
 454 static int update_mntopts(ext2_filsys fs, char *mntopts)
 455 {
 456         struct ext2_super_block *sb = fs->super;
 457
 458         if (e2p_edit_mntopts(mntopts, &sb->s_default_mount_opts, ~0)) {
 459                 fprintf(stderr, _("Invalid mount option set: %s\n"),
 460                         mntopts);
 461                 return 1;
 462         }
 463         ext2fs_mark_super_dirty(fs);
 464
 465         return 0;
 466 }
 467
 468 static int check_fsck_needed(ext2_filsys fs, const char *prompt)
 469 {
 470         /* Refuse to modify anything but a freshly checked valid filesystem. */
 471         if (!(fs->super->s_state & EXT2_VALID_FS) ||
 472             (fs->super->s_state & EXT2_ERROR_FS) ||
 473             (ext2fs_get_tstamp(fs->super, s_lastcheck) <
 474              ext2fs_get_tstamp(fs->super, s_mtime))) {
 475                 puts(_(fsck_explain));
 476                 puts(_(please_fsck));
 477                 if (mount_flags & EXT2_MF_READONLY)
 478                         printf("%s", _("(and reboot afterwards!)\n"));
 479                 return 1;
 480         }
 481
 482         /* Give the admin a few seconds to bail out of a dangerous op. */
 483         if (!getenv("TUNE2FS_FORCE_PROMPT") && (!isatty(0) || !isatty(1)))
 484                 return 0;
 485
 486         puts(prompt);
 487         proceed_question(5);
 488
 489         return 0;
 490 }
 491
 492 static void request_dir_fsck_afterwards(ext2_filsys fs)
 493 {
 494         static int requested;
 495
 496         if (requested++)
 497                 return;
 498         fsck_requested++;
 499         fs->super->s_state &= ~EXT2_VALID_FS;
 500         puts(_(fsck_explain));
 501         puts(_(please_dir_fsck));
 502         if (mount_flags & EXT2_MF_READONLY)
 503                 printf("%s", _("(and reboot afterwards!)\n"));
 504 }
 505
 506 static void request_fsck_afterwards(ext2_filsys fs)
 507 {
 508         static int requested = 0;
 509
 510         if (requested++)
 511                 return;
 512         fsck_requested++;
 513         fs->super->s_state &= ~EXT2_VALID_FS;
 514         printf("\n%s\n", _(please_fsck));
 515         if (mount_flags & EXT2_MF_READONLY)
 516                 printf("%s", _("(and reboot afterwards!)\n"));
 517 }
 518
 519 static void convert_64bit(ext2_filsys fs, int direction)
 520 {
 521         /*
 522          * Is resize2fs going to demand a fsck run? Might as well tell the
 523          * user now.
 524          */
 525         if (!fsck_requested &&
 526             ((fs->super->s_state & EXT2_ERROR_FS) ||
 527              !(fs->super->s_state & EXT2_VALID_FS) ||
 528              ext2fs_get_tstamp(fs->super, s_lastcheck) <
 529              ext2fs_get_tstamp(fs->super, s_mtime)))
 530                 request_fsck_afterwards(fs);
 531         if (fsck_requested)
 532                 fprintf(stderr, _("After running e2fsck, please run `resize2fs %s %s"),
 533                         direction > 0 ? "-b" : "-s", fs->device_name);
 534         else
 535                 fprintf(stderr, _("Please run `resize2fs %s %s"),
 536                         direction > 0 ? "-b" : "-s", fs->device_name);
 537
 538         if (undo_file)
 539                 fprintf(stderr, _(" -z \"%s\""), undo_file);
 540         if (direction > 0)
 541                 fprintf(stderr, _("' to enable 64-bit mode.\n"));
 542         else
 543                 fprintf(stderr, _("' to disable 64-bit mode.\n"));
 544 }
 545
 546 /*
 547  * Rewrite directory blocks with checksums
 548  */
 549 struct rewrite_dir_context {
 550         char *buf;
 551         errcode_t errcode;
 552         ext2_ino_t dir;
 553         int is_htree:1;
 554         int clear_htree:1;
 555 };
 556
 557 static int rewrite_dir_block(ext2_filsys fs,
 558                              blk64_t    *blocknr,
 559                              e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
 560                              blk64_t    ref_block EXT2FS_ATTR((unused)),
 561                              int        ref_offset EXT2FS_ATTR((unused)),
 562                              void       *priv_data)
 563 {
 564         struct ext2_dx_countlimit *dcl = NULL;
 565         struct rewrite_dir_context *ctx = priv_data;
 566         int dcl_offset, changed = 0;
 567
 568         ctx->errcode = ext2fs_read_dir_block4(fs, *blocknr, ctx->buf, 0,
 569                                               ctx->dir);
 570         if (ctx->errcode)
 571                 return BLOCK_ABORT;
 572
 573         /*
 574          * if htree node... Note that if we are clearing htree structures from
 575          * the directory, we treat the htree internal block as an ordinary leaf.
 576          * The code below will do the right thing and make space for checksum
 577          * there.
 578          */
 579         if (ctx->is_htree && !ctx->clear_htree)
 580                 ext2fs_get_dx_countlimit(fs, (struct ext2_dir_entry *)ctx->buf,
 581                                          &dcl, &dcl_offset);
 582         if (dcl) {
 583                 if (!ext2fs_has_feature_metadata_csum(fs->super)) {
 584                         /* Ensure limit is the max size */
 585                         int max_entries = (fs->blocksize - dcl_offset) /
 586                                           sizeof(struct ext2_dx_entry);
 587                         if (ext2fs_le16_to_cpu(dcl->limit) != max_entries) {
 588                                 changed = 1;
 589                                 dcl->limit = ext2fs_cpu_to_le16(max_entries);
 590                         }
 591                 } else {
 592                         /* If htree block is full then rebuild the dir */
 593                         if (ext2fs_le16_to_cpu(dcl->count) ==
 594                             ext2fs_le16_to_cpu(dcl->limit)) {
 595                                 request_dir_fsck_afterwards(fs);
 596                                 return 0;
 597                         }
 598                         /*
 599                          * Ensure dcl->limit is small enough to leave room for
 600                          * the checksum tail.
 601                          */
 602                         int max_entries = (fs->blocksize - (dcl_offset +
 603                                                 sizeof(struct ext2_dx_tail))) /
 604                                           sizeof(struct ext2_dx_entry);
 605                         if (ext2fs_le16_to_cpu(dcl->limit) != max_entries)
 606                                 dcl->limit = ext2fs_cpu_to_le16(max_entries);
 607                         /* Always rewrite checksum */
 608                         changed = 1;
 609                 }
 610         } else {
 611                 unsigned int rec_len, name_size;
 612                 char *top = ctx->buf + fs->blocksize;
 613                 struct ext2_dir_entry *de = (struct ext2_dir_entry *)ctx->buf;
 614                 struct ext2_dir_entry *last_de = NULL, *penultimate_de = NULL;
 615
 616                 /* Find last and penultimate dirent */
 617                 while ((char *)de < top) {
 618                         penultimate_de = last_de;
 619                         last_de = de;
 620                         ctx->errcode = ext2fs_get_rec_len(fs, de, &rec_len);
 621                         if (!ctx->errcode && !rec_len)
 622                                 ctx->errcode = EXT2_ET_DIR_CORRUPTED;
 623                         if (ctx->errcode)
 624                                 return BLOCK_ABORT;
 625                         de = (struct ext2_dir_entry *)(((char *)de) + rec_len);
 626                 }
 627                 ctx->errcode = ext2fs_get_rec_len(fs, last_de, &rec_len);
 628                 if (ctx->errcode)
 629                         return BLOCK_ABORT;
 630                 name_size = ext2fs_dirent_name_len(last_de);
 631
 632                 if (!ext2fs_has_feature_metadata_csum(fs->super)) {
 633                         if (!penultimate_de)
 634                                 return 0;
 635                         if (last_de->inode ||
 636                             name_size ||
 637                             rec_len != sizeof(struct ext2_dir_entry_tail))
 638                                 return 0;
 639                         /*
 640                          * The last dirent is unused and the right length to
 641                          * have stored a checksum.  Erase it.
 642                          */
 643                         ctx->errcode = ext2fs_get_rec_len(fs, penultimate_de,
 644                                                           &rec_len);
 645                         if (!rec_len)
 646                                 ctx->errcode = EXT2_ET_DIR_CORRUPTED;
 647                         if (ctx->errcode)
 648                                 return BLOCK_ABORT;
 649                         ext2fs_set_rec_len(fs, rec_len +
 650                                         sizeof(struct ext2_dir_entry_tail),
 651                                         penultimate_de);
 652                         changed = 1;
 653                 } else {
 654                         unsigned csum_size = sizeof(struct ext2_dir_entry_tail);
 655                         struct ext2_dir_entry_tail *t;
 656
 657                         /*
 658                          * If the last dirent looks like the tail, just update
 659                          * the checksum.
 660                          */
 661                         if (!last_de->inode &&
 662                             rec_len == csum_size) {
 663                                 t = (struct ext2_dir_entry_tail *)last_de;
 664                                 t->det_reserved_name_len =
 665                                                 EXT2_DIR_NAME_LEN_CSUM;
 666                                 changed = 1;
 667                                 goto out;
 668                         }
 669                         if (name_size & 3)
 670                                 name_size = (name_size & ~3) + 4;
 671                         /* If there's not enough space for the tail, e2fsck */
 672                         if (rec_len <= (8 + name_size + csum_size)) {
 673                                 request_dir_fsck_afterwards(fs);
 674                                 return 0;
 675                         }
 676                         /* Shorten that last de and insert the tail */
 677                         ext2fs_set_rec_len(fs, rec_len - csum_size, last_de);
 678                         t = EXT2_DIRENT_TAIL(ctx->buf, fs->blocksize);
 679                         ext2fs_initialize_dirent_tail(fs, t);
 680
 681                         /* Always update checksum */
 682                         changed = 1;
 683                 }
 684         }
 685
 686 out:
 687         if (!changed)
 688                 return 0;
 689
 690         ctx->errcode = ext2fs_write_dir_block4(fs, *blocknr, ctx->buf,
 691                                                0, ctx->dir);
 692         if (ctx->errcode)
 693                 return BLOCK_ABORT;
 694
 695         return 0;
 696 }
 697
 698 static errcode_t rewrite_directory(ext2_filsys fs, ext2_ino_t dir,
 699                                    struct ext2_inode *inode)
 700 {
 701         errcode_t       retval;
 702         struct rewrite_dir_context ctx;
 703
 704         retval = ext2fs_get_mem(fs->blocksize, &ctx.buf);
 705         if (retval)
 706                 return retval;
 707
 708         ctx.is_htree = !!(inode->i_flags & EXT2_INDEX_FL);
 709         ctx.clear_htree = !ext2fs_has_feature_dir_index(fs->super);
 710         ctx.dir = dir;
 711         ctx.errcode = 0;
 712         retval = ext2fs_block_iterate3(fs, dir, BLOCK_FLAG_READ_ONLY |
 713                                                 BLOCK_FLAG_DATA_ONLY,
 714                                        0, rewrite_dir_block, &ctx);
 715
 716         ext2fs_free_mem(&ctx.buf);
 717         if (retval)
 718                 return retval;
 719
 720         if (ctx.is_htree && ctx.clear_htree) {
 721                 inode->i_flags &= ~EXT2_INDEX_FL;
 722                 retval = ext2fs_write_inode(fs, dir, inode);
 723                 if (retval)
 724                         return retval;
 725         }
 726
 727         return ctx.errcode;
 728 }
 729
 730 /*
 731  * Context information that does not change across rewrite_one_inode()
 732  * invocations.
 733  */
 734 struct rewrite_context {
 735         ext2_filsys fs;
 736         struct ext2_inode *zero_inode;
 737         char *ea_buf;
 738         int inode_size;
 739 };
 740
 741 #define fatal_err(code, args...)                \
 742         do {                                    \
 743                 com_err(__func__, code, args);  \
 744                 exit(1);                        \
 745         } while (0);
 746
 747 static void update_ea_inode_hash(struct rewrite_context *ctx, ext2_ino_t ino,
 748                                  struct ext2_inode *inode)
 749 {
 750         errcode_t retval;
 751         ext2_file_t file;
 752         __u32 hash;
 753
 754         retval = ext2fs_file_open(ctx->fs, ino, 0, &file);
 755         if (retval)
 756                 fatal_err(retval, "open ea_inode");
 757         retval = ext2fs_file_read(file, ctx->ea_buf, inode->i_size,
 758                                   NULL);
 759         if (retval)
 760                 fatal_err(retval, "read ea_inode");
 761         retval = ext2fs_file_close(file);
 762         if (retval)
 763                 fatal_err(retval, "close ea_inode");
 764
 765         hash = ext2fs_crc32c_le(ctx->fs->csum_seed,
 766                                 (unsigned char *) ctx->ea_buf, inode->i_size);
 767         ext2fs_set_ea_inode_hash(inode, hash);
 768 }
 769
 770 static int update_xattr_entry_hashes(ext2_filsys fs,
 771                                      struct ext2_ext_attr_entry *entry,
 772                                      struct ext2_ext_attr_entry *end)
 773 {
 774         int modified = 0;
 775         errcode_t retval;
 776
 777         while (entry < end && !EXT2_EXT_IS_LAST_ENTRY(entry)) {
 778                 if (entry->e_value_inum) {
 779                         retval = ext2fs_ext_attr_hash_entry2(fs, entry, NULL,
 780                                                              &entry->e_hash);
 781                         if (retval)
 782                                 fatal_err(retval, "hash ea_inode entry");
 783                         modified = 1;
 784                 }
 785                 entry = EXT2_EXT_ATTR_NEXT(entry);
 786         }
 787         return modified;
 788 }
 789
 790 static void update_inline_xattr_hashes(struct rewrite_context *ctx,
 791                                        struct ext2_inode_large *inode)
 792 {
 793         struct ext2_ext_attr_entry *start, *end;
 794         __u32 *ea_magic;
 795
 796         if (inode->i_extra_isize == 0)
 797                 return;
 798
 799         if (inode->i_extra_isize & 3 ||
 800             inode->i_extra_isize > ctx->inode_size - EXT2_GOOD_OLD_INODE_SIZE)
 801                 fatal_err(EXT2_ET_INODE_CORRUPTED, "bad i_extra_isize")
 802
 803         ea_magic = (__u32 *)((char *)inode + EXT2_GOOD_OLD_INODE_SIZE +
 804                                 inode->i_extra_isize);
 805         if (*ea_magic != EXT2_EXT_ATTR_MAGIC)
 806                 return;
 807
 808         start = (struct ext2_ext_attr_entry *)(ea_magic + 1);
 809         end = (struct ext2_ext_attr_entry *)((char *)inode + ctx->inode_size);
 810
 811         update_xattr_entry_hashes(ctx->fs, start, end);
 812 }
 813
 814 static void update_block_xattr_hashes(struct rewrite_context *ctx,
 815                                       char *block_buf)
 816 {
 817         struct ext2_ext_attr_header *header;
 818         struct ext2_ext_attr_entry *start, *end;
 819
 820         header = (struct ext2_ext_attr_header *)block_buf;
 821         if (header->h_magic != EXT2_EXT_ATTR_MAGIC)
 822                 return;
 823
 824         start = (struct ext2_ext_attr_entry *)(header+1);
 825         end = (struct ext2_ext_attr_entry *)(block_buf + ctx->fs->blocksize);
 826
 827         if (update_xattr_entry_hashes(ctx->fs, start, end))
 828                 ext2fs_ext_attr_block_rehash(header, end);
 829 }
 830
 831 static void rewrite_one_inode(struct rewrite_context *ctx, ext2_ino_t ino,
 832                               struct ext2_inode *inode)
 833 {
 834         blk64_t file_acl_block;
 835         errcode_t retval;
 836
 837         if (!ext2fs_test_inode_bitmap2(ctx->fs->inode_map, ino)) {
 838                 if (!memcmp(inode, ctx->zero_inode, ctx->inode_size))
 839                         return;
 840                 memset(inode, 0, ctx->inode_size);
 841         }
 842
 843         if (inode->i_flags & EXT4_EA_INODE_FL)
 844                 update_ea_inode_hash(ctx, ino, inode);
 845
 846         if (ctx->inode_size != EXT2_GOOD_OLD_INODE_SIZE)
 847                 update_inline_xattr_hashes(ctx,
 848                                            (struct ext2_inode_large *)inode);
 849
 850         retval = ext2fs_write_inode_full(ctx->fs, ino, inode, ctx->inode_size);
 851         if (retval)
 852                 fatal_err(retval, "while writing inode");
 853
 854         retval = ext2fs_fix_extents_checksums(ctx->fs, ino, inode);
 855         if (retval)
 856                 fatal_err(retval, "while rewriting extents");
 857
 858         if (LINUX_S_ISDIR(inode->i_mode) &&
 859             ext2fs_inode_has_valid_blocks2(ctx->fs, inode)) {
 860                 retval = rewrite_directory(ctx->fs, ino, inode);
 861                 if (retval)
 862                         fatal_err(retval, "while rewriting directories");
 863         }
 864
 865         file_acl_block = ext2fs_file_acl_block(ctx->fs, inode);
 866         if (!file_acl_block)
 867                 return;
 868
 869         retval = ext2fs_read_ext_attr3(ctx->fs, file_acl_block, ctx->ea_buf,
 870                                        ino);
 871         if (retval)
 872                 fatal_err(retval, "while rewriting extended attribute");
 873
 874         update_block_xattr_hashes(ctx, ctx->ea_buf);
 875         retval = ext2fs_write_ext_attr3(ctx->fs, file_acl_block, ctx->ea_buf,
 876                                         ino);
 877         if (retval)
 878                 fatal_err(retval, "while rewriting extended attribute");
 879 }
 880
 881 #define REWRITE_EA_FL           0x01    /* Rewrite EA inodes */
 882 #define REWRITE_DIR_FL          0x02    /* Rewrite directories */
 883 #define REWRITE_NONDIR_FL       0x04    /* Rewrite other inodes */
 884 #define REWRITE_ALL (REWRITE_EA_FL | REWRITE_DIR_FL | REWRITE_NONDIR_FL)
 885
 886 static void rewrite_inodes_pass(struct rewrite_context *ctx, unsigned int flags)
 887 {
 888         ext2_inode_scan scan;
 889         errcode_t       retval;
 890         ext2_ino_t      ino;
 891         struct ext2_inode *inode;
 892         int rewrite;
 893
 894         retval = ext2fs_get_mem(ctx->inode_size, &inode);
 895         if (retval)
 896                 fatal_err(retval, "while allocating memory");
 897
 898         retval = ext2fs_open_inode_scan(ctx->fs, 0, &scan);
 899         if (retval)
 900                 fatal_err(retval, "while opening inode scan");
 901
 902         do {
 903                 retval = ext2fs_get_next_inode_full(scan, &ino, inode,
 904                                                     ctx->inode_size);
 905                 if (retval)
 906                         fatal_err(retval, "while getting next inode");
 907                 if (!ino)
 908                         break;
 909
 910                 rewrite = 0;
 911                 if (inode->i_flags & EXT4_EA_INODE_FL) {
 912                         if (flags & REWRITE_EA_FL)
 913                                 rewrite = 1;
 914                 } else if (LINUX_S_ISDIR(inode->i_mode)) {
 915                         if (flags & REWRITE_DIR_FL)
 916                                 rewrite = 1;
 917                 } else {
 918                         if (flags & REWRITE_NONDIR_FL)
 919                                 rewrite = 1;
 920                 }
 921                 if (rewrite)
 922                         rewrite_one_inode(ctx, ino, inode);
 923         } while (ino);
 924         ext2fs_close_inode_scan(scan);
 925         ext2fs_free_mem(&inode);
 926 }
 927
 928 /*
 929  * Forcibly rewrite checksums in inodes specified by 'flags'
 930  */
 931 static void rewrite_inodes(ext2_filsys fs, unsigned int flags)
 932 {
 933         struct rewrite_context ctx = {
 934                 .fs = fs,
 935                 .inode_size = EXT2_INODE_SIZE(fs->super),
 936         };
 937         errcode_t retval;
 938
 939         if (fs->super->s_creator_os == EXT2_OS_HURD)
 940                 return;
 941
 942         retval = ext2fs_get_memzero(ctx.inode_size, &ctx.zero_inode);
 943         if (retval)
 944                 fatal_err(retval, "while allocating memory");
 945
 946         retval = ext2fs_get_mem(64 * 1024, &ctx.ea_buf);
 947         if (retval)
 948                 fatal_err(retval, "while allocating memory");
 949
 950         /*
 951          * Extended attribute inodes have a lookup hash that needs to be
 952          * recalculated with the new csum_seed. Other inodes referencing xattr
 953          * inodes need this value to be up to date. That's why we do two passes:
 954          *
 955          * pass 1: update xattr inodes to update their lookup hash as well as
 956          *         other checksums.
 957          *
 958          * pass 2: go over other inodes to update their checksums.
 959          */
 960         if (ext2fs_has_feature_ea_inode(fs->super) && (flags & REWRITE_EA_FL))
 961                 rewrite_inodes_pass(&ctx, REWRITE_EA_FL);
 962         flags &= ~REWRITE_EA_FL;
 963         rewrite_inodes_pass(&ctx, flags);
 964
 965         ext2fs_free_mem(&ctx.zero_inode);
 966         ext2fs_free_mem(&ctx.ea_buf);
 967 }
 968
 969 static errcode_t rewrite_metadata_checksums(ext2_filsys fs, unsigned int flags)
 970 {
 971         errcode_t retval;
 972         dgrp_t i;
 973
 974         fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
 975         ext2fs_init_csum_seed(fs);
 976         for (i = 0; i < fs->group_desc_count; i++)
 977                 ext2fs_group_desc_csum_set(fs, i);
 978         retval = ext2fs_read_bitmaps(fs);
 979         if (retval)
 980                 fatal_err(retval, "while reading bitmaps");
 981         rewrite_inodes(fs, flags);
 982         ext2fs_mark_ib_dirty(fs);
 983         ext2fs_mark_bb_dirty(fs);
 984         retval = ext2fs_mmp_update2(fs, 1);
 985         if (retval)
 986                 return retval;
 987         fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
 988         fs->flags &= ~EXT2_FLAG_IGNORE_CSUM_ERRORS;
 989         if (ext2fs_has_feature_metadata_csum(fs->super))
 990                 fs->super->s_checksum_type = EXT2_CRC32C_CHKSUM;
 991         else
 992                 fs->super->s_checksum_type = 0;
 993         ext2fs_mark_super_dirty(fs);
 994         return 0;
 995 }
 996
 997 static void enable_uninit_bg(ext2_filsys fs)
 998 {
 999         struct ext2_group_desc *gd;
1000         dgrp_t i;
1001
1002         for (i = 0; i < fs->group_desc_count; i++) {
1003                 gd = ext2fs_group_desc(fs, fs->group_desc, i);
1004                 gd->bg_itable_unused = 0;
1005                 gd->bg_flags = EXT2_BG_INODE_ZEROED;
1006                 ext2fs_group_desc_csum_set(fs, i);
1007         }
1008         fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1009 }
1010
1011 static errcode_t zero_empty_inodes(ext2_filsys fs)
1012 {
1013         int length = EXT2_INODE_SIZE(fs->super);
1014         struct ext2_inode *inode = NULL;
1015         ext2_inode_scan scan;
1016         errcode_t       retval;
1017         ext2_ino_t      ino;
1018
1019         retval = ext2fs_open_inode_scan(fs, 0, &scan);
1020         if (retval)
1021                 goto out;
1022
1023         retval = ext2fs_get_mem(length, &inode);
1024         if (retval)
1025                 goto out;
1026
1027         do {
1028                 retval = ext2fs_get_next_inode_full(scan, &ino, inode, length);
1029                 if (retval)
1030                         goto out;
1031                 if (!ino)
1032                         break;
1033                 if (!ext2fs_test_inode_bitmap2(fs->inode_map, ino)) {
1034                         memset(inode, 0, length);
1035                         retval = ext2fs_write_inode_full(fs, ino, inode,
1036                                                          length);
1037                         if (retval)
1038                                 goto out;
1039                 }
1040         } while (1);
1041
1042 out:
1043         ext2fs_free_mem(&inode);
1044         ext2fs_close_inode_scan(scan);
1045         return retval;
1046 }
1047
1048 static int has_casefold_inode(ext2_filsys fs)
1049 {
1050         int length = EXT2_INODE_SIZE(fs->super);
1051         struct ext2_inode *inode = NULL;
1052         ext2_inode_scan scan;
1053         errcode_t       retval;
1054         ext2_ino_t      ino;
1055         int found_casefold = 0;
1056
1057         retval = ext2fs_get_mem(length, &inode);
1058         if (retval)
1059                 fatal_err(retval, "while allocating memory");
1060
1061         retval = ext2fs_open_inode_scan(fs, 0, &scan);
1062         if (retval)
1063                 fatal_err(retval, "while opening inode scan");
1064
1065         do {
1066                 retval = ext2fs_get_next_inode_full(scan, &ino, inode, length);
1067                 if (retval)
1068                         fatal_err(retval, "while getting next inode");
1069                 if (!ino)
1070                         break;
1071
1072                 if(inode->i_flags & EXT4_CASEFOLD_FL) {
1073                         found_casefold = 1;
1074                         break;
1075                 }
1076         } while(1);
1077
1078         ext2fs_free_mem(&inode);
1079         ext2fs_close_inode_scan(scan);
1080         return found_casefold;
1081 }
1082
1083 static errcode_t disable_uninit_bg(ext2_filsys fs, __u32 csum_feature_flag)
1084 {
1085         struct ext2_group_desc *gd;
1086         dgrp_t i;
1087         errcode_t retval;
1088         blk64_t b, c, d;
1089
1090         /* Load bitmaps to ensure that the uninit ones get written out */
1091         fs->super->s_feature_ro_compat |= csum_feature_flag;
1092         retval = ext2fs_read_bitmaps(fs);
1093         fs->super->s_feature_ro_compat &= ~csum_feature_flag;
1094         if (retval) {
1095                 com_err("disable_uninit_bg", retval,
1096                         "while reading bitmaps");
1097                 request_fsck_afterwards(fs);
1098                 return retval;
1099         }
1100         ext2fs_mark_ib_dirty(fs);
1101         ext2fs_mark_bb_dirty(fs);
1102
1103         /* If we're only turning off uninit_bg, zero the inodes */
1104         if (csum_feature_flag == EXT4_FEATURE_RO_COMPAT_GDT_CSUM) {
1105                 retval = zero_empty_inodes(fs);
1106                 if (retval) {
1107                         com_err("disable_uninit_bg", retval,
1108                                 "while zeroing unused inodes");
1109                         request_fsck_afterwards(fs);
1110                         return retval;
1111                 }
1112         }
1113
1114         /* The bbitmap is zeroed; we must mark group metadata blocks in use */
1115         for (i = 0; i < fs->group_desc_count; i++) {
1116                 b = ext2fs_block_bitmap_loc(fs, i);
1117                 ext2fs_mark_block_bitmap2(fs->block_map, b);
1118                 b = ext2fs_inode_bitmap_loc(fs, i);
1119                 ext2fs_mark_block_bitmap2(fs->block_map, b);
1120
1121                 retval = ext2fs_super_and_bgd_loc2(fs, i, &b, &c, &d, NULL);
1122                 if (retval == 0 && b)
1123                         ext2fs_mark_block_bitmap2(fs->block_map, b);
1124                 if (retval == 0 && c)
1125                         ext2fs_mark_block_bitmap2(fs->block_map, c);
1126                 if (retval == 0 && d)
1127                         ext2fs_mark_block_bitmap2(fs->block_map, d);
1128                 if (retval) {
1129                         com_err("disable_uninit_bg", retval,
1130                                 "while initializing block bitmaps");
1131                         request_fsck_afterwards(fs);
1132                 }
1133
1134                 gd = ext2fs_group_desc(fs, fs->group_desc, i);
1135                 gd->bg_itable_unused = 0;
1136                 gd->bg_flags = 0;
1137                 ext2fs_group_desc_csum_set(fs, i);
1138         }
1139         fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1140         ext2fs_mark_super_dirty(fs);
1141
1142         return 0;
1143 }
1144
1145 static void
1146 try_confirm_csum_seed_support(void)
1147 {
1148         if (access("/sys/fs/ext4/features/metadata_csum_seed", R_OK))
1149                 fputs(_("WARNING: Could not confirm kernel support for "
1150                         "metadata_csum_seed.\n  This requires Linux >= "
1151                         "v4.4.\n"), stderr);
1152 }
1153
1154 /*
1155  * Update the feature set as provided by the user.
1156  */
1157 static int update_feature_set(ext2_filsys fs, char *features)
1158 {
1159         struct ext2_super_block *sb = fs->super;
1160         __u32           old_features[3];
1161         int             type_err;
1162         unsigned int    mask_err;
1163         errcode_t       err;
1164         enum quota_type qtype;
1165
1166 #define FEATURE_ON(type, mask) (!(old_features[(type)] & (mask)) && \
1167                                 ((&sb->s_feature_compat)[(type)] & (mask)))
1168 #define FEATURE_OFF(type, mask) ((old_features[(type)] & (mask)) && \
1169                                  !((&sb->s_feature_compat)[(type)] & (mask)))
1170 #define FEATURE_CHANGED(type, mask) ((mask) & \
1171                      (old_features[(type)] ^ (&sb->s_feature_compat)[(type)]))
1172
1173         old_features[E2P_FEATURE_COMPAT] = sb->s_feature_compat;
1174         old_features[E2P_FEATURE_INCOMPAT] = sb->s_feature_incompat;
1175         old_features[E2P_FEATURE_RO_INCOMPAT] = sb->s_feature_ro_compat;
1176
1177         if (e2p_edit_feature2(features, &sb->s_feature_compat,
1178                               ok_features, clear_ok_features,
1179                               &type_err, &mask_err)) {
1180                 if (!mask_err)
1181                         fprintf(stderr,
1182                                 _("Invalid filesystem option set: %s\n"),
1183                                 features);
1184                 else if (type_err & E2P_FEATURE_NEGATE_FLAG)
1185                         fprintf(stderr, _("Clearing filesystem feature '%s' "
1186                                           "not supported.\n"),
1187                                 e2p_feature2string(type_err &
1188                                                    E2P_FEATURE_TYPE_MASK,
1189                                                    mask_err));
1190                 else
1191                         fprintf(stderr, _("Setting filesystem feature '%s' "
1192                                           "not supported.\n"),
1193                                 e2p_feature2string(type_err, mask_err));
1194                 return 1;
1195         }
1196
1197         if (FEATURE_OFF(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
1198                 if ((mount_flags & EXT2_MF_MOUNTED) &&
1199                     !(mount_flags & EXT2_MF_READONLY)) {
1200                         fputs(_("The has_journal feature may only be "
1201                                 "cleared when the filesystem is\n"
1202                                 "unmounted or mounted "
1203                                 "read-only.\n"), stderr);
1204                         return 1;
1205                 }
1206                 if (ext2fs_has_feature_journal_needs_recovery(sb) &&
1207                     f_flag < 2) {
1208                         fputs(_("The needs_recovery flag is set.  "
1209                                 "Please run e2fsck before clearing\n"
1210                                 "the has_journal flag.\n"), stderr);
1211                         return 1;
1212                 }
1213                 if (sb->s_journal_inum) {
1214                         if (remove_journal_inode(fs))
1215                                 return 1;
1216                 }
1217                 if (sb->s_journal_dev) {
1218                         if (remove_journal_device(fs))
1219                                 return 1;
1220                 }
1221         }
1222
1223         if (FEATURE_OFF(E2P_FEATURE_COMPAT, EXT4_FEATURE_COMPAT_ORPHAN_FILE)) {
1224                 ext2_ino_t ino;
1225
1226                 if (mount_flags & EXT2_MF_MOUNTED) {
1227                         fputs(_("The orphan_file feature may only be cleared "
1228                                 "when the filesystem is unmounted.\n"), stderr);
1229                         return 1;
1230                 }
1231                 if (ext2fs_has_feature_orphan_present(sb) && f_flag < 2) {
1232                         fputs(_("The orphan_present feature is set. Please "
1233                                 "run e2fsck before clearing orphan_file "
1234                                 "feature.\n"),
1235                               stderr);
1236                         return 1;
1237                 }
1238                 err = ext2fs_read_bitmaps(fs);
1239                 if (err) {
1240                         com_err(program_name, err, "%s",
1241                                 _("while loading bitmaps"));
1242                         return 1;
1243                 }
1244                 err = ext2fs_truncate_orphan_file(fs);
1245                 if (err) {
1246                         com_err(program_name, err,
1247                                 _("\n\twhile trying to delete orphan file\n"));
1248                         return 1;
1249                 }
1250                 ino = sb->s_orphan_file_inum;
1251                 sb->s_orphan_file_inum = 0;
1252                 ext2fs_inode_alloc_stats2(fs, ino, -1, 0);
1253                 ext2fs_clear_feature_orphan_file(sb);
1254                 ext2fs_clear_feature_orphan_present(sb);
1255                 ext2fs_mark_super_dirty(fs);
1256         }
1257
1258         if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT4_FEATURE_COMPAT_ORPHAN_FILE)) {
1259                 if (!ext2fs_has_feature_journal(sb)) {
1260                         fputs(_("orphan_file feature can be set only for "
1261                                 "filesystems with journal.\n"), stderr);
1262                         return 1;
1263                 }
1264                 /*
1265                  * If adding an orphan file, let the create orphan file
1266                  * code below handle setting the flag and creating it.
1267                  * We supply a default size if necessary.
1268                  */
1269                 orphan_file_blocks = ext2fs_default_orphan_file_blocks(fs);
1270                 ext2fs_set_feature_orphan_file(sb);
1271         }
1272
1273         if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1274                 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER)) {
1275                 if (ext2fs_has_feature_meta_bg(sb)) {
1276                         fputs(_("Setting filesystem feature 'sparse_super' "
1277                                 "not supported\nfor filesystems with "
1278                                 "the meta_bg feature enabled.\n"),
1279                                 stderr);
1280                         return 1;
1281                 }
1282         }
1283
1284         if (FEATURE_ON(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_MMP)) {
1285                 int error;
1286
1287                 if ((mount_flags & EXT2_MF_MOUNTED) ||
1288                     (mount_flags & EXT2_MF_READONLY)) {
1289                         fputs(_("The multiple mount protection feature can't\n"
1290                                 "be set if the filesystem is mounted or\n"
1291                                 "read-only.\n"), stderr);
1292                         return 1;
1293                 }
1294
1295                 error = ext2fs_mmp_init(fs);
1296                 if (error) {
1297                         fputs(_("\nError while enabling multiple mount "
1298                                 "protection feature."), stderr);
1299                         return 1;
1300                 }
1301
1302                 /*
1303                  * We want to update group desc with the new free blocks count
1304                  */
1305                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1306
1307                 printf(_("Multiple mount protection has been enabled "
1308                          "with update interval %ds.\n"),
1309                        sb->s_mmp_update_interval);
1310         }
1311
1312         if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_MMP)) {
1313                 int error;
1314
1315                 if (mount_flags & EXT2_MF_READONLY) {
1316                         fputs(_("The multiple mount protection feature cannot\n"
1317                                 "be disabled if the filesystem is readonly.\n"),
1318                                 stderr);
1319                         return 1;
1320                 }
1321
1322                 error = ext2fs_read_bitmaps(fs);
1323                 if (error) {
1324                         fputs(_("Error while reading bitmaps\n"), stderr);
1325                         return 1;
1326                 }
1327
1328                 error = ext2fs_mmp_read(fs, sb->s_mmp_block, NULL);
1329                 if (error) {
1330                         struct mmp_struct *mmp_cmp = fs->mmp_cmp;
1331
1332                         if (error == EXT2_ET_MMP_MAGIC_INVALID)
1333                                 printf(_("Magic number in MMP block does not "
1334                                          "match. expected: %x, actual: %x\n"),
1335                                          EXT4_MMP_MAGIC, mmp_cmp->mmp_magic);
1336                         else
1337                                 com_err(program_name, error, "%s",
1338                                         _("while reading MMP block."));
1339                         goto mmp_error;
1340                 }
1341
1342                 /* We need to force out the group descriptors as well */
1343                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1344                 ext2fs_block_alloc_stats2(fs, sb->s_mmp_block, -1);
1345 mmp_error:
1346                 sb->s_mmp_block = 0;
1347                 sb->s_mmp_update_interval = 0;
1348         }
1349
1350         if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
1351                 /*
1352                  * If adding a journal flag, let the create journal
1353                  * code below handle setting the flag and creating the
1354                  * journal.  We supply a default size if necessary.
1355                  */
1356                 if (!journal_size)
1357                         journal_size = -1;
1358                 ext2fs_clear_feature_journal(sb);
1359         }
1360
1361         if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT2_FEATURE_COMPAT_DIR_INDEX)) {
1362                 if (!sb->s_def_hash_version)
1363                         sb->s_def_hash_version = EXT2_HASH_HALF_MD4;
1364                 if (uuid_is_null((unsigned char *) sb->s_hash_seed))
1365                         uuid_generate((unsigned char *) sb->s_hash_seed);
1366         }
1367
1368         if (FEATURE_OFF(E2P_FEATURE_COMPAT, EXT2_FEATURE_COMPAT_DIR_INDEX) &&
1369             ext2fs_has_feature_metadata_csum(sb)) {
1370                 if (check_fsck_needed(fs,
1371                         _("Disabling directory index on filesystem with "
1372                           "checksums could take some time.")))
1373                         return 1;
1374                 if (mount_flags & EXT2_MF_MOUNTED) {
1375                         fputs(_("Cannot disable dir_index on a mounted "
1376                                 "filesystem!\n"), stderr);
1377                         exit(1);
1378                 }
1379                 /*
1380                  * Clearing dir_index on checksummed filesystem requires
1381                  * rewriting all directories to update checksums.
1382                  */
1383                 rewrite_checksums |= REWRITE_DIR_FL;
1384         }
1385
1386         if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_FLEX_BG)) {
1387                 if (ext2fs_check_desc(fs)) {
1388                         fputs(_("Clearing the flex_bg flag would "
1389                                 "cause the the filesystem to be\n"
1390                                 "inconsistent.\n"), stderr);
1391                         return 1;
1392                 }
1393         }
1394
1395         if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1396                             EXT4_FEATURE_RO_COMPAT_HUGE_FILE)) {
1397                 if ((mount_flags & EXT2_MF_MOUNTED) &&
1398                     !(mount_flags & EXT2_MF_READONLY)) {
1399                         fputs(_("The huge_file feature may only be "
1400                                 "cleared when the filesystem is\n"
1401                                 "unmounted or mounted "
1402                                 "read-only.\n"), stderr);
1403                         return 1;
1404                 }
1405         }
1406
1407         if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1408                        EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) {
1409                 if (check_fsck_needed(fs,
1410                         _("Enabling checksums could take some time.")))
1411                         return 1;
1412                 if (mount_flags & EXT2_MF_MOUNTED) {
1413                         fputs(_("Cannot enable metadata_csum on a mounted "
1414                                 "filesystem!\n"), stderr);
1415                         return 1;
1416                 }
1417                 if (!ext2fs_has_feature_extents(fs->super))
1418                         printf("%s",
1419                                _("Extents are not enabled.  The file extent "
1420                                  "tree can be checksummed, whereas block maps "
1421                                  "cannot.  Not enabling extents reduces the "
1422                                  "coverage of metadata checksumming.  "
1423                                  "Re-run with -O extent to rectify.\n"));
1424                 if (!ext2fs_has_feature_64bit(fs->super))
1425                         printf("%s",
1426                                _("64-bit filesystem support is not enabled.  "
1427                                  "The larger fields afforded by this feature "
1428                                  "enable full-strength checksumming.  "
1429                                  "Run resize2fs -b to rectify.\n"));
1430                 rewrite_checksums = REWRITE_ALL;
1431                 /* metadata_csum supersedes uninit_bg */
1432                 ext2fs_clear_feature_gdt_csum(fs->super);
1433
1434                 /* if uninit_bg was previously off, rewrite group desc */
1435                 if (!(old_features[E2P_FEATURE_RO_INCOMPAT] &
1436                       EXT4_FEATURE_RO_COMPAT_GDT_CSUM))
1437                         enable_uninit_bg(fs);
1438
1439                 /*
1440                  * Since metadata_csum supersedes uninit_bg, pretend like
1441                  * uninit_bg has been off all along.
1442                  */
1443                 old_features[E2P_FEATURE_RO_INCOMPAT] &=
1444                         ~EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1445         }
1446
1447         if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1448                         EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) {
1449                 __u32   test_features[3];
1450
1451                 if (check_fsck_needed(fs,
1452                         _("Disabling checksums could take some time.")))
1453                         return 1;
1454                 if (mount_flags & EXT2_MF_MOUNTED) {
1455                         fputs(_("Cannot disable metadata_csum on a mounted "
1456                                 "filesystem!\n"), stderr);
1457                         return 1;
1458                 }
1459                 rewrite_checksums = REWRITE_ALL;
1460
1461                 /* Enable uninit_bg unless the user expressly turned it off */
1462                 memcpy(test_features, old_features, sizeof(test_features));
1463                 test_features[E2P_FEATURE_RO_INCOMPAT] |=
1464                                                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1465                 e2p_edit_feature2(features, test_features, ok_features,
1466                                   clear_ok_features, NULL, NULL);
1467                 if (test_features[E2P_FEATURE_RO_INCOMPAT] &
1468                                                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM)
1469                         ext2fs_set_feature_gdt_csum(fs->super);
1470
1471                 /*
1472                  * If we're turning off metadata_csum and not turning on
1473                  * uninit_bg, rewrite group desc.
1474                  */
1475                 if (!ext2fs_has_feature_gdt_csum(fs->super)) {
1476                         err = disable_uninit_bg(fs,
1477                                         EXT4_FEATURE_RO_COMPAT_METADATA_CSUM);
1478                         if (err)
1479                                 return 1;
1480                 } else
1481                         /*
1482                          * metadata_csum previously provided uninit_bg, so if
1483                          * we're also setting the uninit_bg feature bit,
1484                          * pretend like it was previously enabled.  Checksums
1485                          * will be rewritten with crc16 later.
1486                          */
1487                         old_features[E2P_FEATURE_RO_INCOMPAT] |=
1488                                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1489                 fs->super->s_checksum_seed = 0;
1490                 ext2fs_clear_feature_csum_seed(fs->super);
1491         }
1492
1493         if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1494                        EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
1495                 if (mount_flags & EXT2_MF_MOUNTED) {
1496                         fputs(_("Cannot enable uninit_bg on a mounted "
1497                                 "filesystem!\n"), stderr);
1498                         return 1;
1499                 }
1500
1501                 /* Do not enable uninit_bg when metadata_csum enabled */
1502                 if (ext2fs_has_feature_metadata_csum(fs->super))
1503                         ext2fs_clear_feature_gdt_csum(fs->super);
1504                 else
1505                         enable_uninit_bg(fs);
1506         }
1507
1508         if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1509                         EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
1510                 if (mount_flags & EXT2_MF_MOUNTED) {
1511                         fputs(_("Cannot disable uninit_bg on a mounted "
1512                                 "filesystem!\n"), stderr);
1513                         return 1;
1514                 }
1515
1516                 err = disable_uninit_bg(fs,
1517                                 EXT4_FEATURE_RO_COMPAT_GDT_CSUM);
1518                 if (err)
1519                         return 1;
1520         }
1521
1522         /*
1523          * We don't actually toggle 64bit; resize2fs does that.  But this
1524          * must come after the metadata_csum feature_on so that it won't
1525          * complain about the lack of 64bit.
1526          */
1527         if (FEATURE_ON(E2P_FEATURE_INCOMPAT,
1528                        EXT4_FEATURE_INCOMPAT_64BIT)) {
1529                 if (mount_flags & EXT2_MF_MOUNTED) {
1530                         fprintf(stderr, _("Cannot enable 64-bit mode "
1531                                           "while mounted!\n"));
1532                         return 1;
1533                 }
1534                 ext2fs_clear_feature_64bit(sb);
1535                 feature_64bit = 1;
1536         }
1537         if (FEATURE_OFF(E2P_FEATURE_INCOMPAT,
1538                         EXT4_FEATURE_INCOMPAT_64BIT)) {
1539                 if (mount_flags & EXT2_MF_MOUNTED) {
1540                         fprintf(stderr, _("Cannot disable 64-bit mode "
1541                                           "while mounted!\n"));
1542                         return 1;
1543                 }
1544                 ext2fs_set_feature_64bit(sb);
1545                 feature_64bit = -1;
1546         }
1547
1548         if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1549                                 EXT4_FEATURE_RO_COMPAT_QUOTA)) {
1550                 /*
1551                  * Set the Q_flag here and handle the quota options in the code
1552                  * below.
1553                  */
1554                 if (!Q_flag) {
1555                         Q_flag = 1;
1556                         /* Enable usr/grp quota by default */
1557                         for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
1558                                 if (qtype != PRJQUOTA)
1559                                         quota_enable[qtype] = QOPT_ENABLE;
1560                                 else
1561                                         quota_enable[qtype] = QOPT_DISABLE;
1562                         }
1563                 }
1564                 ext2fs_clear_feature_quota(sb);
1565         }
1566
1567         if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1568                        EXT4_FEATURE_RO_COMPAT_PROJECT)) {
1569                 if (fs->super->s_inode_size == EXT2_GOOD_OLD_INODE_SIZE) {
1570                         fprintf(stderr, _("Cannot enable project feature; "
1571                                           "inode size too small.\n"));
1572                         return 1;
1573                 }
1574                 Q_flag = 1;
1575                 quota_enable[PRJQUOTA] = QOPT_ENABLE;
1576         }
1577
1578         if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1579                         EXT4_FEATURE_RO_COMPAT_PROJECT)) {
1580                 Q_flag = 1;
1581                 quota_enable[PRJQUOTA] = QOPT_DISABLE;
1582         }
1583
1584         if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1585                                 EXT4_FEATURE_RO_COMPAT_QUOTA)) {
1586                 /*
1587                  * Set the Q_flag here and handle the quota options in the code
1588                  * below.
1589                  */
1590                 if (Q_flag)
1591                         fputs(_("\nWarning: '^quota' option overrides '-Q'"
1592                                 "arguments.\n"), stderr);
1593                 Q_flag = 1;
1594                 /* Disable all quota by default */
1595                 for (qtype = 0; qtype < MAXQUOTAS; qtype++)
1596                         quota_enable[qtype] = QOPT_DISABLE;
1597         }
1598
1599         if (FEATURE_ON(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_ENCRYPT)) {
1600                 fs->super->s_encrypt_algos[0] =
1601                         EXT4_ENCRYPTION_MODE_AES_256_XTS;
1602                 fs->super->s_encrypt_algos[1] =
1603                         EXT4_ENCRYPTION_MODE_AES_256_CTS;
1604         }
1605
1606         if (FEATURE_ON(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_CASEFOLD)) {
1607                 if (mount_flags & EXT2_MF_MOUNTED) {
1608                         fputs(_("The casefold feature may only be enabled when "
1609                                 "the filesystem is unmounted.\n"), stderr);
1610                         return 1;
1611                 }
1612                 fs->super->s_encoding = EXT4_ENC_UTF8_12_1;
1613                 fs->super->s_encoding_flags = e2p_get_encoding_flags(EXT4_ENC_UTF8_12_1);
1614                 enabling_casefold = 1;
1615         }
1616
1617         if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_CASEFOLD)) {
1618                 if (mount_flags & EXT2_MF_MOUNTED) {
1619                         fputs(_("The casefold feature may only be disabled when "
1620                                 "the filesystem is unmounted.\n"), stderr);
1621                         return 1;
1622                 }
1623                 if (has_casefold_inode(fs)) {
1624                         fputs(_("The casefold feature can't be cleared when "
1625                                         "there are inodes with +F flag.\n"), stderr);
1626                         return 1;
1627                 }
1628                 fs->super->s_encoding = 0;
1629                 fs->super->s_encoding_flags = 0;
1630                 enabling_casefold = 0;
1631         }
1632
1633         if (FEATURE_ON(E2P_FEATURE_INCOMPAT,
1634                 EXT4_FEATURE_INCOMPAT_CSUM_SEED)) {
1635                 if (!ext2fs_has_feature_metadata_csum(sb)) {
1636                         fputs(_("Setting feature 'metadata_csum_seed' "
1637                                 "is only supported\non filesystems with "
1638                                 "the metadata_csum feature enabled.\n"),
1639                                 stderr);
1640                         return 1;
1641                 }
1642                 try_confirm_csum_seed_support();
1643                 fs->super->s_checksum_seed = fs->csum_seed;
1644         }
1645
1646         if (FEATURE_OFF(E2P_FEATURE_INCOMPAT,
1647                 EXT4_FEATURE_INCOMPAT_CSUM_SEED)) {
1648                 __le32 uuid_seed;
1649
1650                 uuid_seed = ext2fs_crc32c_le(~0, fs->super->s_uuid,
1651                                         sizeof(fs->super->s_uuid));
1652                 if (fs->super->s_checksum_seed != uuid_seed) {
1653                         if (mount_flags & (EXT2_MF_BUSY|EXT2_MF_MOUNTED)) {
1654                                 fputs(_("UUID has changed since enabling "
1655                 "metadata_csum.  Filesystem must be unmounted "
1656                 "\nto safely rewrite all metadata to match the new UUID.\n"),
1657                                       stderr);
1658                                 return 1;
1659                         }
1660                         if (check_fsck_needed(fs, _("Recalculating checksums "
1661                                                     "could take some time.")))
1662                                 return 1;
1663                         rewrite_checksums = REWRITE_ALL;
1664                 }
1665         }
1666
1667         if (sb->s_rev_level == EXT2_GOOD_OLD_REV &&
1668             (sb->s_feature_compat || sb->s_feature_ro_compat ||
1669              sb->s_feature_incompat))
1670                 ext2fs_update_dynamic_rev(fs);
1671
1672         if (FEATURE_CHANGED(E2P_FEATURE_RO_INCOMPAT,
1673                             EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER) ||
1674             FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1675                         EXT4_FEATURE_RO_COMPAT_HUGE_FILE) ||
1676             FEATURE_CHANGED(E2P_FEATURE_INCOMPAT,
1677                             EXT2_FEATURE_INCOMPAT_FILETYPE) ||
1678             FEATURE_CHANGED(E2P_FEATURE_COMPAT,
1679                             EXT2_FEATURE_COMPAT_RESIZE_INODE) ||
1680             FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1681                         EXT2_FEATURE_RO_COMPAT_LARGE_FILE))
1682                 request_fsck_afterwards(fs);
1683
1684         if ((old_features[E2P_FEATURE_COMPAT] != sb->s_feature_compat) ||
1685             (old_features[E2P_FEATURE_INCOMPAT] != sb->s_feature_incompat) ||
1686             (old_features[E2P_FEATURE_RO_INCOMPAT] != sb->s_feature_ro_compat))
1687                 ext2fs_mark_super_dirty(fs);
1688
1689         return 0;
1690 }
1691
1692 /*
1693  * Add a journal to the filesystem.
1694  */
1695 static int add_journal(ext2_filsys fs)
1696 {
1697         struct ext2fs_journal_params    jparams;
1698         errcode_t       retval;
1699         ext2_filsys     jfs;
1700         io_manager      io_ptr;
1701
1702         if (ext2fs_has_feature_journal(fs->super)) {
1703                 fputs(_("The filesystem already has a journal.\n"), stderr);
1704                 goto err;
1705         }
1706         if (journal_device) {
1707                 if (!check_plausibility(journal_device, CHECK_BLOCK_DEV,
1708                                         NULL))
1709                         proceed_question(-1);
1710                 check_mount(journal_device, 0, _("journal"));
1711 #ifdef CONFIG_TESTIO_DEBUG
1712                 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
1713                         io_ptr = test_io_manager;
1714                         test_io_backing_manager = unix_io_manager;
1715                 } else
1716 #endif
1717                         io_ptr = unix_io_manager;
1718                 retval = ext2fs_open(journal_device, EXT2_FLAG_RW|
1719                                      EXT2_FLAG_JOURNAL_DEV_OK, 0,
1720                                      fs->blocksize, io_ptr, &jfs);
1721                 if (retval) {
1722                         com_err(program_name, retval,
1723                                 _("\n\twhile trying to open journal on %s\n"),
1724                                 journal_device);
1725                         goto err;
1726                 }
1727                 printf(_("Creating journal on device %s: "),
1728                        journal_device);
1729                 fflush(stdout);
1730
1731                 retval = ext2fs_add_journal_device(fs, jfs);
1732                 ext2fs_close_free(&jfs);
1733                 if (retval) {
1734                         com_err(program_name, retval,
1735                                 _("while adding filesystem to journal on %s"),
1736                                 journal_device);
1737                         goto err;
1738                 }
1739                 fputs(_("done\n"), stdout);
1740         } else if (journal_size) {
1741                 fputs(_("Creating journal inode: "), stdout);
1742                 fflush(stdout);
1743                 figure_journal_size(&jparams, journal_size, journal_fc_size, fs);
1744
1745                 if (journal_location_string)
1746                         journal_location =
1747                                 parse_num_blocks2(journal_location_string,
1748                                                   fs->super->s_log_block_size);
1749                 retval = ext2fs_add_journal_inode3(fs, &jparams,
1750                                                    journal_location,
1751                                                    journal_flags);
1752                 if (retval) {
1753                         fprintf(stderr, "\n");
1754                         com_err(program_name, retval, "%s",
1755                                 _("\n\twhile trying to create journal file"));
1756                         return retval;
1757                 }
1758                 fs->super->s_overhead_clusters += EXT2FS_NUM_B2C(fs,
1759                         jparams.num_journal_blocks + jparams.num_fc_blocks);
1760                 ext2fs_mark_super_dirty(fs);
1761                 fputs(_("done\n"), stdout);
1762
1763                 /*
1764                  * If the filesystem wasn't mounted, we need to force
1765                  * the block group descriptors out.
1766                  */
1767                 if ((mount_flags & EXT2_MF_MOUNTED) == 0)
1768                         fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1769         }
1770         print_check_message(fs->super->s_max_mnt_count,
1771                             fs->super->s_checkinterval);
1772         return 0;
1773
1774 err:
1775         free(journal_device);
1776         return 1;
1777 }
1778
1779 static int handle_quota_options(ext2_filsys fs)
1780 {
1781         errcode_t retval;
1782         quota_ctx_t qctx;
1783         ext2_ino_t qf_ino;
1784         enum quota_type qtype;
1785         unsigned int qtype_bits = 0;
1786         int need_dirty = 0;
1787
1788         for (qtype = 0 ; qtype < MAXQUOTAS; qtype++)
1789                 if (quota_enable[qtype] != 0)
1790                         break;
1791         if (qtype == MAXQUOTAS)
1792                 /* Nothing to do. */
1793                 return 0;
1794
1795         if (quota_enable[PRJQUOTA] == QOPT_ENABLE &&
1796             fs->super->s_inode_size == EXT2_GOOD_OLD_INODE_SIZE) {
1797                 fprintf(stderr, _("Cannot enable project quota; "
1798                                   "inode size too small.\n"));
1799                 return 1;
1800         }
1801
1802         for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
1803                 if (quota_enable[qtype] == QOPT_ENABLE)
1804                         qtype_bits |= 1 << qtype;
1805         }
1806
1807         retval = quota_init_context(&qctx, fs, qtype_bits);
1808         if (retval) {
1809                 com_err(program_name, retval,
1810                         _("while initializing quota context in support library"));
1811                 return 1;
1812         }
1813
1814         if (qtype_bits)
1815                 quota_compute_usage(qctx);
1816
1817         for (qtype = 0 ; qtype < MAXQUOTAS; qtype++) {
1818                 if (quota_enable[qtype] == QOPT_ENABLE &&
1819                     *quota_sb_inump(fs->super, qtype) == 0) {
1820                         if ((qf_ino = quota_file_exists(fs, qtype)) > 0) {
1821                                 retval = quota_read_all_dquots(qctx, qf_ino,
1822                                                                qtype,
1823                                                                QREAD_LIMITS);
1824                                 if (retval) {
1825                                         com_err(program_name, retval,
1826                                                 _("while updating quota limits (%d)"),
1827                                                 qtype);
1828                                 quota_errout:
1829                                         quota_release_context(&qctx);
1830                                         return 1;
1831                                 }
1832                         }
1833                         retval = quota_write_inode(qctx, 1 << qtype);
1834                         if (retval) {
1835                                 com_err(program_name, retval,
1836                                         _("while writing quota file (%d)"),
1837                                         qtype);
1838                                 goto quota_errout;
1839                         }
1840                         /* Enable Quota feature if one of quota enabled */
1841                         if (!ext2fs_has_feature_quota(fs->super)) {
1842                                 ext2fs_set_feature_quota(fs->super);
1843                                 need_dirty = 1;
1844                         }
1845                         if (qtype == PRJQUOTA &&
1846                             !ext2fs_has_feature_project(fs->super)) {
1847                                 ext2fs_set_feature_project(fs->super);
1848                                 need_dirty = 1;
1849                         }
1850                 } else if (quota_enable[qtype] == QOPT_DISABLE) {
1851                         retval = quota_remove_inode(fs, qtype);
1852                         if (retval) {
1853                                 com_err(program_name, retval,
1854                                         _("while removing quota file (%d)"),
1855                                         qtype);
1856                                 goto quota_errout;
1857                         }
1858                         if (qtype == PRJQUOTA) {
1859                                 ext2fs_clear_feature_project(fs->super);
1860                                 need_dirty = 1;
1861                         }
1862                 }
1863         }
1864
1865         quota_release_context(&qctx);
1866         /* Clear Quota feature if all quota types disabled. */
1867         if (!qtype_bits) {
1868                 for (qtype = 0 ; qtype < MAXQUOTAS; qtype++)
1869                         if (*quota_sb_inump(fs->super, qtype))
1870                                 break;
1871                 if (qtype == MAXQUOTAS) {
1872                         ext2fs_clear_feature_quota(fs->super);
1873                         need_dirty = 1;
1874                 }
1875
1876         }
1877         if (need_dirty)
1878                 ext2fs_mark_super_dirty(fs);
1879         return 0;
1880 }
1881
1882 static int option_handle_function(char *token)
1883 {
1884         if (strncmp(token, "usr", 3) == 0) {
1885                 quota_enable[USRQUOTA] = QOPT_ENABLE;
1886         } else if (strncmp(token, "^usr", 4) == 0) {
1887                 quota_enable[USRQUOTA] = QOPT_DISABLE;
1888         } else if (strncmp(token, "grp", 3) == 0) {
1889                 quota_enable[GRPQUOTA] = QOPT_ENABLE;
1890         } else if (strncmp(token, "^grp", 4) == 0) {
1891                 quota_enable[GRPQUOTA] = QOPT_DISABLE;
1892         } else if (strncmp(token, "prj", 3) == 0) {
1893                 quota_enable[PRJQUOTA] = QOPT_ENABLE;
1894         } else if (strncmp(token, "^prj", 4) == 0) {
1895                 quota_enable[PRJQUOTA] = QOPT_DISABLE;
1896         } else {
1897                 fputs(_("\nBad quota options specified.\n\n"
1898                         "Following valid quota options are available "
1899                         "(pass by separating with comma):\n"
1900                         "\t[^]usr[quota]\n"
1901                         "\t[^]grp[quota]\n"
1902                         "\t[^]prj[quota]\n"
1903                         "\n\n"), stderr);
1904                 return 1;
1905         }
1906         return 0;
1907 }
1908
1909 static void parse_e2label_options(int argc, char ** argv)
1910 {
1911         if ((argc < 2) || (argc > 3)) {
1912                 fputs(_("Usage: e2label device [newlabel]\n"), stderr);
1913                 exit(1);
1914         }
1915         io_options = strchr(argv[1], '?');
1916         if (io_options)
1917                 *io_options++ = 0;
1918         device_name = get_devname(NULL, argv[1], NULL);
1919         if (!device_name) {
1920                 com_err("e2label", 0, _("Unable to resolve '%s'"),
1921                         argv[1]);
1922                 exit(1);
1923         }
1924         open_flag = EXT2_FLAG_JOURNAL_DEV_OK | EXT2_FLAG_SUPER_ONLY;
1925         if (argc == 3) {
1926                 open_flag |= EXT2_FLAG_RW;
1927                 L_flag = 1;
1928                 new_label = argv[2];
1929         } else
1930                 print_label++;
1931 }
1932
1933 static time_t parse_time(char *str)
1934 {
1935         struct  tm      ts;
1936
1937         if (strcmp(str, "now") == 0) {
1938                 return (time(0));
1939         }
1940         memset(&ts, 0, sizeof(ts));
1941 #ifdef HAVE_STRPTIME
1942         strptime(str, "%Y%m%d%H%M%S", &ts);
1943 #else
1944         sscanf(str, "%4d%2d%2d%2d%2d%2d", &ts.tm_year, &ts.tm_mon,
1945                &ts.tm_mday, &ts.tm_hour, &ts.tm_min, &ts.tm_sec);
1946         ts.tm_year -= 1900;
1947         ts.tm_mon -= 1;
1948         if (ts.tm_year < 0 || ts.tm_mon < 0 || ts.tm_mon > 11 ||
1949             ts.tm_mday < 0 || ts.tm_mday > 31 || ts.tm_hour > 23 ||
1950             ts.tm_min > 59 || ts.tm_sec > 61)
1951                 ts.tm_mday = 0;
1952 #endif
1953         if (ts.tm_mday == 0) {
1954                 com_err(program_name, 0,
1955                         _("Couldn't parse date/time specifier: %s"),
1956                         str);
1957                 usage();
1958         }
1959         ts.tm_isdst = -1;
1960         return (mktime(&ts));
1961 }
1962
1963 static void parse_tune2fs_options(int argc, char **argv)
1964 {
1965         int c;
1966         char *tmp;
1967         struct group *gr;
1968         struct passwd *pw;
1969         int ret;
1970         char optstring[100] = "c:e:fg:i:jlm:o:r:s:u:C:E:I:J:L:M:O:T:U:z:Q:";
1971
1972         open_flag = 0;
1973         printf("tune2fs %s (%s)\n", E2FSPROGS_VERSION, E2FSPROGS_DATE);
1974         while ((c = getopt(argc, argv, optstring)) != EOF)
1975                 switch (c) {
1976                 case 'c':
1977                         open_flag = EXT2_FLAG_RW;
1978                         c_flag = 1;
1979                         if (strcmp(optarg, "random") == 0) {
1980                                 max_mount_count = 65536;
1981                                 break;
1982                         }
1983                         max_mount_count = strtol(optarg, &tmp, 0);
1984                         if (*tmp || max_mount_count > 16000 ||
1985                             max_mount_count < -16000) {
1986                                 com_err(program_name, 0,
1987                                         _("bad mounts count - %s"),
1988                                         optarg);
1989                                 usage();
1990                         }
1991                         if (max_mount_count == 0)
1992                                 max_mount_count = -1;
1993                         break;
1994                 case 'C':
1995                         mount_count = strtoul(optarg, &tmp, 0);
1996                         if (*tmp || mount_count > 16000) {
1997                                 com_err(program_name, 0,
1998                                         _("bad mounts count - %s"),
1999                                         optarg);
2000                                 usage();
2001                         }
2002                         C_flag = 1;
2003                         open_flag = EXT2_FLAG_RW;
2004                         break;
2005                 case 'e':
2006                         if (strcmp(optarg, "continue") == 0)
2007                                 errors = EXT2_ERRORS_CONTINUE;
2008                         else if (strcmp(optarg, "remount-ro") == 0)
2009                                 errors = EXT2_ERRORS_RO;
2010                         else if (strcmp(optarg, "panic") == 0)
2011                                 errors = EXT2_ERRORS_PANIC;
2012                         else {
2013                                 com_err(program_name, 0,
2014                                         _("bad error behavior - %s"),
2015                                         optarg);
2016                                 usage();
2017                         }
2018                         e_flag = 1;
2019                         open_flag = EXT2_FLAG_RW;
2020                         break;
2021                 case 'E':
2022                         extended_cmd = optarg;
2023                         open_flag |= EXT2_FLAG_RW;
2024                         break;
2025                 case 'f': /* Force */
2026                         f_flag++;
2027                         break;
2028                 case 'g':
2029                         resgid = strtoul(optarg, &tmp, 0);
2030                         if (*tmp) {
2031                                 gr = getgrnam(optarg);
2032                                 if (gr == NULL)
2033                                         tmp = optarg;
2034                                 else {
2035                                         resgid = gr->gr_gid;
2036                                         *tmp = 0;
2037                                 }
2038                         }
2039                         if (*tmp) {
2040                                 com_err(program_name, 0,
2041                                         _("bad gid/group name - %s"),
2042                                         optarg);
2043                                 usage();
2044                         }
2045                         g_flag = 1;
2046                         open_flag = EXT2_FLAG_RW;
2047                         break;
2048                 case 'i':
2049                         interval = strtoul(optarg, &tmp, 0);
2050                         switch (*tmp) {
2051                         case 's':
2052                                 tmp++;
2053                                 break;
2054                         case '\0':
2055                         case 'd':
2056                         case 'D': /* days */
2057                                 interval *= 86400;
2058                                 if (*tmp != '\0')
2059                                         tmp++;
2060                                 break;
2061                         case 'm':
2062                         case 'M': /* months! */
2063                                 interval *= 86400 * 30;
2064                                 tmp++;
2065                                 break;
2066                         case 'w':
2067                         case 'W': /* weeks */
2068                                 interval *= 86400 * 7;
2069                                 tmp++;
2070                                 break;
2071                         }
2072                         if (*tmp) {
2073                                 com_err(program_name, 0,
2074                                         _("bad interval - %s"), optarg);
2075                                 usage();
2076                         }
2077                         i_flag = 1;
2078                         open_flag = EXT2_FLAG_RW;
2079                         break;
2080                 case 'j':
2081                         if (!journal_size)
2082                                 journal_size = -1;
2083                         open_flag = EXT2_FLAG_RW;
2084                         break;
2085                 case 'J':
2086                         parse_journal_opts(optarg);
2087                         open_flag = EXT2_FLAG_RW;
2088                         break;
2089                 case 'l':
2090                         l_flag = 1;
2091                         break;
2092                 case 'L':
2093                         new_label = optarg;
2094                         L_flag = 1;
2095                         open_flag |= EXT2_FLAG_RW |
2096                                 EXT2_FLAG_JOURNAL_DEV_OK;
2097                         break;
2098                 case 'm':
2099                         reserved_ratio = strtod(optarg, &tmp);
2100                         if (*tmp || reserved_ratio > 50 ||
2101                             reserved_ratio < 0) {
2102                                 com_err(program_name, 0,
2103                                         _("bad reserved block ratio - %s"),
2104                                         optarg);
2105                                 usage();
2106                         }
2107                         m_flag = 1;
2108                         open_flag = EXT2_FLAG_RW;
2109                         break;
2110                 case 'M':
2111                         new_last_mounted = optarg;
2112                         M_flag = 1;
2113                         open_flag = EXT2_FLAG_RW;
2114                         break;
2115                 case 'o':
2116                         if (mntopts_cmd) {
2117                                 com_err(program_name, 0, "%s",
2118                                         _("-o may only be specified once"));
2119                                 usage();
2120                         }
2121                         mntopts_cmd = optarg;
2122                         open_flag = EXT2_FLAG_RW;
2123                         break;
2124                 case 'O':
2125                         if (features_cmd) {
2126                                 com_err(program_name, 0, "%s",
2127                                         _("-O may only be specified once"));
2128                                 usage();
2129                         }
2130                         features_cmd = optarg;
2131                         open_flag = EXT2_FLAG_RW;
2132                         break;
2133                 case 'Q':
2134                         Q_flag = 1;
2135                         ret = parse_quota_opts(optarg, option_handle_function);
2136                         if (ret)
2137                                 exit(1);
2138                         open_flag = EXT2_FLAG_RW;
2139                         break;
2140                 case 'r':
2141                         reserved_blocks = strtoul(optarg, &tmp, 0);
2142                         if (*tmp) {
2143                                 com_err(program_name, 0,
2144                                         _("bad reserved blocks count - %s"),
2145                                         optarg);
2146                                 usage();
2147                         }
2148                         r_flag = 1;
2149                         open_flag = EXT2_FLAG_RW;
2150                         break;
2151                 case 's': /* Deprecated */
2152                         s_flag = atoi(optarg);
2153                         open_flag = EXT2_FLAG_RW;
2154                         break;
2155                 case 'T':
2156                         T_flag = 1;
2157                         last_check_time = parse_time(optarg);
2158                         open_flag = EXT2_FLAG_RW;
2159                         break;
2160                 case 'u':
2161                                 resuid = strtoul(optarg, &tmp, 0);
2162                                 if (*tmp) {
2163                                         pw = getpwnam(optarg);
2164                                         if (pw == NULL)
2165                                                 tmp = optarg;
2166                                         else {
2167                                                 resuid = pw->pw_uid;
2168                                                 *tmp = 0;
2169                                         }
2170                                 }
2171                                 if (*tmp) {
2172                                         com_err(program_name, 0,
2173                                                 _("bad uid/user name - %s"),
2174                                                 optarg);
2175                                         usage();
2176                                 }
2177                                 u_flag = 1;
2178                                 open_flag = EXT2_FLAG_RW;
2179                                 break;
2180                 case 'U':
2181                         requested_uuid = optarg;
2182                         U_flag = 1;
2183                         open_flag = EXT2_FLAG_RW |
2184                                 EXT2_FLAG_JOURNAL_DEV_OK;
2185                         break;
2186                 case 'I':
2187                         new_inode_size = strtoul(optarg, &tmp, 0);
2188                         if (*tmp) {
2189                                 com_err(program_name, 0,
2190                                         _("bad inode size - %s"),
2191                                         optarg);
2192                                 usage();
2193                         }
2194                         if (!((new_inode_size &
2195                                (new_inode_size - 1)) == 0)) {
2196                                 com_err(program_name, 0,
2197                                         _("Inode size must be a "
2198                                           "power of two- %s"),
2199                                         optarg);
2200                                 usage();
2201                         }
2202                         open_flag = EXT2_FLAG_RW;
2203                         I_flag = 1;
2204                         break;
2205                 case 'z':
2206                         undo_file = optarg;
2207                         break;
2208                 default:
2209                         usage();
2210                 }
2211         if (optind < argc - 1 || optind == argc)
2212                 usage();
2213         if (!open_flag && !l_flag)
2214                 usage();
2215         io_options = strchr(argv[optind], '?');
2216         if (io_options)
2217                 *io_options++ = 0;
2218         device_name = get_devname(NULL, argv[optind], NULL);
2219         if (!device_name) {
2220                 com_err(program_name, 0, _("Unable to resolve '%s'"),
2221                         argv[optind]);
2222                 exit(1);
2223         }
2224 }
2225
2226 #ifdef CONFIG_BUILD_FINDFS
2227 void do_findfs(int argc, char **argv)
2228 {
2229         char    *dev;
2230
2231         if ((argc != 2) ||
2232             (strncmp(argv[1], "LABEL=", 6) && strncmp(argv[1], "UUID=", 5))) {
2233                 fprintf(stderr, "Usage: findfs LABEL=<label>|UUID=<uuid>\n");
2234                 exit(2);
2235         }
2236         dev = blkid_get_devname(NULL, argv[1], NULL);
2237         if (!dev) {
2238                 com_err("findfs", 0, _("Unable to resolve '%s'"),
2239                         argv[1]);
2240                 exit(1);
2241         }
2242         puts(dev);
2243         exit(0);
2244 }
2245 #endif
2246
2247 static int parse_extended_opts(ext2_filsys fs, const char *opts)
2248 {
2249         struct ext2_super_block *sb = fs->super;
2250         char    *buf, *token, *next, *p, *arg;
2251         int     len, hash_alg;
2252         int     r_usage = 0;
2253         int encoding = 0;
2254         char    *encoding_flags = NULL;
2255
2256         len = strlen(opts);
2257         buf = malloc(len+1);
2258         if (!buf) {
2259                 fprintf(stderr, "%s",
2260                         _("Couldn't allocate memory to parse options!\n"));
2261                 return 1;
2262         }
2263         strcpy(buf, opts);
2264         for (token = buf; token && *token; token = next) {
2265                 p = strchr(token, ',');
2266                 next = 0;
2267                 if (p) {
2268                         *p = 0;
2269                         next = p+1;
2270                 }
2271                 arg = strchr(token, '=');
2272                 if (arg) {
2273                         *arg = 0;
2274                         arg++;
2275                 }
2276                 if (strcmp(token, "clear-mmp") == 0 ||
2277                     strcmp(token, "clear_mmp") == 0) {
2278                         clear_mmp = 1;
2279                 } else if (strcmp(token, "mmp_update_interval") == 0) {
2280                         unsigned long intv;
2281                         if (!arg) {
2282                                 r_usage++;
2283                                 continue;
2284                         }
2285                         intv = strtoul(arg, &p, 0);
2286                         if (*p) {
2287                                 fprintf(stderr,
2288                                         _("Invalid mmp_update_interval: %s\n"),
2289                                         arg);
2290                                 r_usage++;
2291                                 continue;
2292                         }
2293                         if (intv == 0) {
2294                                 intv = EXT4_MMP_UPDATE_INTERVAL;
2295                         } else if (intv > EXT4_MMP_MAX_UPDATE_INTERVAL) {
2296                                 fprintf(stderr,
2297                                         _("mmp_update_interval too big: %lu\n"),
2298                                         intv);
2299                                 r_usage++;
2300                                 continue;
2301                         }
2302                         printf(P_("Setting multiple mount protection update "
2303                                   "interval to %lu second\n",
2304                                   "Setting multiple mount protection update "
2305                                   "interval to %lu seconds\n", intv),
2306                                intv);
2307                         sb->s_mmp_update_interval = intv;
2308                         ext2fs_mark_super_dirty(fs);
2309                 } else if (!strcmp(token, "force_fsck")) {
2310                         sb->s_state |= EXT2_ERROR_FS;
2311                         printf(_("Setting filesystem error flag to force fsck.\n"));
2312                         ext2fs_mark_super_dirty(fs);
2313                 } else if (!strcmp(token, "test_fs")) {
2314                         sb->s_flags |= EXT2_FLAGS_TEST_FILESYS;
2315                         printf("Setting test filesystem flag\n");
2316                         ext2fs_mark_super_dirty(fs);
2317                 } else if (!strcmp(token, "^test_fs")) {
2318                         sb->s_flags &= ~EXT2_FLAGS_TEST_FILESYS;
2319                         printf("Clearing test filesystem flag\n");
2320                         ext2fs_mark_super_dirty(fs);
2321                 } else if (strcmp(token, "stride") == 0) {
2322                         if (!arg) {
2323                                 r_usage++;
2324                                 continue;
2325                         }
2326                         stride = strtoul(arg, &p, 0);
2327                         if (*p) {
2328                                 fprintf(stderr,
2329                                         _("Invalid RAID stride: %s\n"),
2330                                         arg);
2331                                 r_usage++;
2332                                 continue;
2333                         }
2334                         stride_set = 1;
2335                 } else if (strcmp(token, "stripe-width") == 0 ||
2336                            strcmp(token, "stripe_width") == 0) {
2337                         if (!arg) {
2338                                 r_usage++;
2339                                 continue;
2340                         }
2341                         stripe_width = strtoul(arg, &p, 0);
2342                         if (*p) {
2343                                 fprintf(stderr,
2344                                         _("Invalid RAID stripe-width: %s\n"),
2345                                         arg);
2346                                 r_usage++;
2347                                 continue;
2348                         }
2349                         stripe_width_set = 1;
2350                 } else if (strcmp(token, "hash_alg") == 0 ||
2351                            strcmp(token, "hash-alg") == 0) {
2352                         if (!arg) {
2353                                 r_usage++;
2354                                 continue;
2355                         }
2356                         hash_alg = e2p_string2hash(arg);
2357                         if (hash_alg < 0) {
2358                                 fprintf(stderr,
2359                                         _("Invalid hash algorithm: %s\n"),
2360                                         arg);
2361                                 r_usage++;
2362                                 continue;
2363                         }
2364                         sb->s_def_hash_version = hash_alg;
2365                         printf(_("Setting default hash algorithm "
2366                                  "to %s (%d)\n"),
2367                                arg, hash_alg);
2368                         ext2fs_mark_super_dirty(fs);
2369                 } else if (!strcmp(token, "mount_opts")) {
2370                         if (!arg) {
2371                                 r_usage++;
2372                                 continue;
2373                         }
2374                         if (strlen(arg) >= sizeof(fs->super->s_mount_opts)) {
2375                                 fprintf(stderr,
2376                                         "Extended mount options too long\n");
2377                                 continue;
2378                         }
2379                         ext_mount_opts = strdup(arg);
2380                 } else if (!strcmp(token, "encoding")) {
2381                         if (!arg) {
2382                                 r_usage++;
2383                                 continue;
2384                         }
2385                         if (mount_flags & EXT2_MF_MOUNTED) {
2386                                 fputs(_("The casefold feature may only be enabled when "
2387                                         "the filesystem is unmounted.\n"), stderr);
2388                                 r_usage++;
2389                                 continue;
2390                         }
2391                         if (ext2fs_has_feature_casefold(sb) && !enabling_casefold) {
2392                                 fprintf(stderr, _("Cannot alter existing encoding\n"));
2393                                 r_usage++;
2394                                 continue;
2395                         }
2396                         encoding = e2p_str2encoding(arg);
2397                         if (encoding < 0) {
2398                                 fprintf(stderr, _("Invalid encoding: %s\n"), arg);
2399                                 r_usage++;
2400                                 continue;
2401                         }
2402                         enabling_casefold = 1;
2403                         sb->s_encoding = encoding;
2404                         printf(_("Setting encoding to '%s'\n"), arg);
2405                         sb->s_encoding_flags =
2406                                 e2p_get_encoding_flags(sb->s_encoding);
2407                 } else if (!strcmp(token, "encoding_flags")) {
2408                         if (!arg) {
2409                                 r_usage++;
2410                                 continue;
2411                         }
2412                         encoding_flags = arg;
2413                 } else if (!strcmp(token, "orphan_file_size")) {
2414                         if (!arg) {
2415                                 r_usage++;
2416                                 continue;
2417                         }
2418                         orphan_file_blocks = parse_num_blocks2(arg,
2419                                                  fs->super->s_log_block_size);
2420
2421                         if (orphan_file_blocks < 1) {
2422                                 fprintf(stderr,
2423                                         _("Invalid size of orphan file %s\n"),
2424                                         arg);
2425                                 r_usage++;
2426                                 continue;
2427                         }
2428                 } else
2429                         r_usage++;
2430         }
2431
2432         if (encoding > 0 && !r_usage) {
2433                 sb->s_encoding_flags =
2434                         e2p_get_encoding_flags(sb->s_encoding);
2435
2436                 if (encoding_flags &&
2437                     e2p_str2encoding_flags(sb->s_encoding, encoding_flags,
2438                                            &sb->s_encoding_flags)) {
2439                         fprintf(stderr, _("error: Invalid encoding flag: %s\n"),
2440                                         encoding_flags);
2441                         r_usage++;
2442                 } else if (encoding_flags)
2443                         printf(_("Setting encoding_flags to '%s'\n"),
2444                                  encoding_flags);
2445                 ext2fs_set_feature_casefold(sb);
2446                 ext2fs_mark_super_dirty(fs);
2447         } else if (encoding_flags && !r_usage) {
2448                 fprintf(stderr, _("error: An encoding must be explicitly "
2449                                   "specified when passing encoding-flags\n"));
2450                 r_usage++;
2451         }
2452         if (r_usage) {
2453                 fprintf(stderr, "%s", _("\nBad options specified.\n\n"
2454                         "Extended options are separated by commas, "
2455                         "and may take an argument which\n"
2456                         "\tis set off by an equals ('=') sign.\n\n"
2457                         "Valid extended options are:\n"
2458                         "\tclear_mmp\n"
2459                         "\thash_alg=<hash algorithm>\n"
2460                         "\tmount_opts=<extended default mount options>\n"
2461                         "\tmmp_update_interval=<mmp update interval in seconds>\n"
2462                         "\tstride=<RAID per-disk chunk size in blocks>\n"
2463                         "\tstripe_width=<RAID stride*data disks in blocks>\n"
2464                         "\tforce_fsck\n"
2465                         "\ttest_fs\n"
2466                         "\t^test_fs\n"
2467                         "\tencoding=<encoding>\n"
2468                         "\tencoding_flags=<flags>\n"));
2469                 free(buf);
2470                 return 1;
2471         }
2472         free(buf);
2473
2474         return 0;
2475 }
2476
2477 /*
2478  * Fill in the block bitmap bmap with the information regarding the
2479  * blocks to be moved
2480  */
2481 static int get_move_bitmaps(ext2_filsys fs, int new_ino_blks_per_grp,
2482                             ext2fs_block_bitmap bmap)
2483 {
2484         dgrp_t i;
2485         int retval;
2486         ext2_badblocks_list bb_list = 0;
2487         blk64_t j, needed_blocks = 0;
2488         blk64_t start_blk, end_blk;
2489
2490         retval = ext2fs_read_bb_inode(fs, &bb_list);
2491         if (retval)
2492                 return retval;
2493
2494         for (i = 0; i < fs->group_desc_count; i++) {
2495                 start_blk = ext2fs_inode_table_loc(fs, i) +
2496                                         fs->inode_blocks_per_group;
2497
2498                 end_blk = ext2fs_inode_table_loc(fs, i) +
2499                                         new_ino_blks_per_grp;
2500
2501                 for (j = start_blk; j < end_blk; j++) {
2502                         if (ext2fs_test_block_bitmap2(fs->block_map, j)) {
2503                                 /*
2504                                  * IF the block is a bad block we fail
2505                                  */
2506                                 if (ext2fs_badblocks_list_test(bb_list, j)) {
2507                                         ext2fs_badblocks_list_free(bb_list);
2508                                         return ENOSPC;
2509                                 }
2510
2511                                 ext2fs_mark_block_bitmap2(bmap, j);
2512                         } else {
2513                                 /*
2514                                  * We are going to use this block for
2515                                  * inode table. So mark them used.
2516                                  */
2517                                 ext2fs_mark_block_bitmap2(fs->block_map, j);
2518                         }
2519                 }
2520                 needed_blocks += end_blk - start_blk;
2521         }
2522
2523         ext2fs_badblocks_list_free(bb_list);
2524         if (needed_blocks > ext2fs_free_blocks_count(fs->super))
2525                 return ENOSPC;
2526
2527         return 0;
2528 }
2529
2530 static int ext2fs_is_meta_block(ext2_filsys fs, blk64_t blk)
2531 {
2532         dgrp_t group;
2533         group = ext2fs_group_of_blk2(fs, blk);
2534         if (ext2fs_block_bitmap_loc(fs, group) == blk)
2535                 return 1;
2536         if (ext2fs_inode_bitmap_loc(fs, group) == blk)
2537                 return 1;
2538         return 0;
2539 }
2540
2541 static int ext2fs_is_block_in_group(ext2_filsys fs, dgrp_t group, blk64_t blk)
2542 {
2543         blk64_t start_blk, end_blk;
2544         start_blk = fs->super->s_first_data_block +
2545                         EXT2_GROUPS_TO_BLOCKS(fs->super, group);
2546         /*
2547          * We cannot get new block beyond end_blk for for the last block group
2548          * so we can check with EXT2_BLOCKS_PER_GROUP even for last block group
2549          */
2550         end_blk   = start_blk + EXT2_BLOCKS_PER_GROUP(fs->super);
2551         if (blk >= start_blk && blk <= end_blk)
2552                 return 1;
2553         return 0;
2554 }
2555
2556 static int move_block(ext2_filsys fs, ext2fs_block_bitmap bmap)
2557 {
2558
2559         char *buf;
2560         dgrp_t group = 0;
2561         errcode_t retval;
2562         int meta_data = 0;
2563         blk64_t blk, new_blk, goal;
2564         struct blk_move *bmv;
2565
2566         retval = ext2fs_get_mem(fs->blocksize, &buf);
2567         if (retval)
2568                 return retval;
2569
2570         for (new_blk = blk = fs->super->s_first_data_block;
2571              blk < ext2fs_blocks_count(fs->super); blk++) {
2572                 if (!ext2fs_test_block_bitmap2(bmap, blk))
2573                         continue;
2574
2575                 if (ext2fs_is_meta_block(fs, blk)) {
2576                         /*
2577                          * If the block is mapping a fs meta data block
2578                          * like group desc/block bitmap/inode bitmap. We
2579                          * should find a block in the same group and fix
2580                          * the respective fs metadata pointers. Otherwise
2581                          * fail
2582                          */
2583                         group = ext2fs_group_of_blk2(fs, blk);
2584                         goal = ext2fs_group_first_block2(fs, group);
2585                         meta_data = 1;
2586
2587                 } else {
2588                         goal = new_blk;
2589                 }
2590                 retval = ext2fs_new_block2(fs, goal, NULL, &new_blk);
2591                 if (retval)
2592                         goto err_out;
2593
2594                 /* new fs meta data block should be in the same group */
2595                 if (meta_data && !ext2fs_is_block_in_group(fs, group, new_blk)) {
2596                         retval = ENOSPC;
2597                         goto err_out;
2598                 }
2599
2600                 /* Mark this block as allocated */
2601                 ext2fs_mark_block_bitmap2(fs->block_map, new_blk);
2602
2603                 /* Add it to block move list */
2604                 retval = ext2fs_get_mem(sizeof(struct blk_move), &bmv);
2605                 if (retval)
2606                         goto err_out;
2607
2608                 bmv->old_loc = blk;
2609                 bmv->new_loc = new_blk;
2610
2611                 list_add(&(bmv->list), &blk_move_list);
2612
2613                 retval = io_channel_read_blk64(fs->io, blk, 1, buf);
2614                 if (retval)
2615                         goto err_out;
2616
2617                 retval = io_channel_write_blk64(fs->io, new_blk, 1, buf);
2618                 if (retval)
2619                         goto err_out;
2620         }
2621
2622 err_out:
2623         ext2fs_free_mem(&buf);
2624         return retval;
2625 }
2626
2627 static blk64_t translate_block(blk64_t blk)
2628 {
2629         struct list_head *entry;
2630         struct blk_move *bmv;
2631
2632         list_for_each(entry, &blk_move_list) {
2633                 bmv = list_entry(entry, struct blk_move, list);
2634                 if (bmv->old_loc == blk)
2635                         return bmv->new_loc;
2636         }
2637
2638         return 0;
2639 }
2640
2641 static int process_block(ext2_filsys fs EXT2FS_ATTR((unused)),
2642                          blk64_t *block_nr,
2643                          e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
2644                          blk64_t ref_block EXT2FS_ATTR((unused)),
2645                          int ref_offset EXT2FS_ATTR((unused)),
2646                          void *priv_data)
2647 {
2648         int ret = 0;
2649         blk64_t new_blk;
2650         ext2fs_block_bitmap bmap = (ext2fs_block_bitmap) priv_data;
2651
2652         if (!ext2fs_test_block_bitmap2(bmap, *block_nr))
2653                 return 0;
2654         new_blk = translate_block(*block_nr);
2655         if (new_blk) {
2656                 *block_nr = new_blk;
2657                 /*
2658                  * This will force the ext2fs_write_inode in the iterator
2659                  */
2660                 ret |= BLOCK_CHANGED;
2661         }
2662
2663         return ret;
2664 }
2665
2666 static int inode_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
2667 {
2668         errcode_t retval = 0;
2669         ext2_ino_t ino;
2670         blk64_t blk;
2671         char *block_buf = 0;
2672         struct ext2_inode inode;
2673         ext2_inode_scan scan = NULL;
2674
2675         retval = ext2fs_get_mem(fs->blocksize * 3, &block_buf);
2676         if (retval)
2677                 return retval;
2678
2679         retval = ext2fs_open_inode_scan(fs, 0, &scan);
2680         if (retval)
2681                 goto err_out;
2682
2683         while (1) {
2684                 retval = ext2fs_get_next_inode(scan, &ino, &inode);
2685                 if (retval)
2686                         goto err_out;
2687
2688                 if (!ino)
2689                         break;
2690
2691                 if (inode.i_links_count == 0)
2692                         continue; /* inode not in use */
2693
2694                 /* FIXME!!
2695                  * If we end up modifying the journal inode
2696                  * the sb->s_jnl_blocks will differ. But a
2697                  * subsequent e2fsck fixes that.
2698                  * Do we need to fix this ??
2699                  */
2700
2701                 if (ext2fs_file_acl_block(fs, &inode) &&
2702                     ext2fs_test_block_bitmap2(bmap,
2703                                         ext2fs_file_acl_block(fs, &inode))) {
2704                         blk = translate_block(ext2fs_file_acl_block(fs,
2705                                                                     &inode));
2706                         if (!blk)
2707                                 continue;
2708
2709                         ext2fs_file_acl_block_set(fs, &inode, blk);
2710
2711                         /*
2712                          * Write the inode to disk so that inode table
2713                          * resizing can work
2714                          */
2715                         retval = ext2fs_write_inode(fs, ino, &inode);
2716                         if (retval)
2717                                 goto err_out;
2718                 }
2719
2720                 if (!ext2fs_inode_has_valid_blocks2(fs, &inode))
2721                         continue;
2722
2723                 retval = ext2fs_block_iterate3(fs, ino, 0, block_buf,
2724                                                process_block, bmap);
2725                 if (retval)
2726                         goto err_out;
2727
2728         }
2729
2730 err_out:
2731         ext2fs_free_mem(&block_buf);
2732         ext2fs_close_inode_scan(scan);
2733
2734         return retval;
2735 }
2736
2737 /*
2738  * We need to scan for inode and block bitmaps that may need to be
2739  * moved.  This can take place if the filesystem was formatted for
2740  * RAID arrays using the mke2fs's extended option "stride".
2741  */
2742 static int group_desc_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
2743 {
2744         dgrp_t i;
2745         blk64_t blk, new_blk;
2746
2747         for (i = 0; i < fs->group_desc_count; i++) {
2748                 blk = ext2fs_block_bitmap_loc(fs, i);
2749                 if (ext2fs_test_block_bitmap2(bmap, blk)) {
2750                         new_blk = translate_block(blk);
2751                         if (!new_blk)
2752                                 continue;
2753                         ext2fs_block_bitmap_loc_set(fs, i, new_blk);
2754                 }
2755
2756                 blk = ext2fs_inode_bitmap_loc(fs, i);
2757                 if (ext2fs_test_block_bitmap2(bmap, blk)) {
2758                         new_blk = translate_block(blk);
2759                         if (!new_blk)
2760                                 continue;
2761                         ext2fs_inode_bitmap_loc_set(fs, i, new_blk);
2762                 }
2763         }
2764         return 0;
2765 }
2766
2767 static int expand_inode_table(ext2_filsys fs, unsigned long new_ino_size)
2768 {
2769         dgrp_t i;
2770         blk64_t blk;
2771         errcode_t retval;
2772         int new_ino_blks_per_grp;
2773         unsigned int j;
2774         char *old_itable = NULL, *new_itable = NULL;
2775         char *tmp_old_itable = NULL, *tmp_new_itable = NULL;
2776         unsigned long old_ino_size;
2777         int old_itable_size, new_itable_size;
2778
2779         old_itable_size = fs->inode_blocks_per_group * fs->blocksize;
2780         old_ino_size = EXT2_INODE_SIZE(fs->super);
2781
2782         new_ino_blks_per_grp = ext2fs_div_ceil(
2783                                         EXT2_INODES_PER_GROUP(fs->super) *
2784                                         new_ino_size,
2785                                         fs->blocksize);
2786
2787         new_itable_size = new_ino_blks_per_grp * fs->blocksize;
2788
2789         retval = ext2fs_get_mem(old_itable_size, &old_itable);
2790         if (retval)
2791                 return retval;
2792
2793         retval = ext2fs_get_mem(new_itable_size, &new_itable);
2794         if (retval)
2795                 goto err_out;
2796
2797         tmp_old_itable = old_itable;
2798         tmp_new_itable = new_itable;
2799
2800         for (i = 0; i < fs->group_desc_count; i++) {
2801                 blk = ext2fs_inode_table_loc(fs, i);
2802                 retval = io_channel_read_blk64(fs->io, blk,
2803                                 fs->inode_blocks_per_group, old_itable);
2804                 if (retval)
2805                         goto err_out;
2806
2807                 for (j = 0; j < EXT2_INODES_PER_GROUP(fs->super); j++) {
2808                         memcpy(new_itable, old_itable, old_ino_size);
2809
2810                         memset(new_itable+old_ino_size, 0,
2811                                         new_ino_size - old_ino_size);
2812
2813                         new_itable += new_ino_size;
2814                         old_itable += old_ino_size;
2815                 }
2816
2817                 /* reset the pointer */
2818                 old_itable = tmp_old_itable;
2819                 new_itable = tmp_new_itable;
2820
2821                 retval = io_channel_write_blk64(fs->io, blk,
2822                                         new_ino_blks_per_grp, new_itable);
2823                 if (retval)
2824                         goto err_out;
2825         }
2826
2827         /* Update the meta data */
2828         fs->inode_blocks_per_group = new_ino_blks_per_grp;
2829         ext2fs_free_inode_cache(fs->icache);
2830         fs->icache = 0;
2831         fs->super->s_inode_size = new_ino_size;
2832
2833 err_out:
2834         if (old_itable)
2835                 ext2fs_free_mem(&old_itable);
2836
2837         if (new_itable)
2838                 ext2fs_free_mem(&new_itable);
2839
2840         return retval;
2841 }
2842
2843
2844 #define list_for_each_safe(pos, pnext, head) \
2845         for (pos = (head)->next, pnext = pos->next; pos != (head); \
2846              pos = pnext, pnext = pos->next)
2847
2848 static void free_blk_move_list(void)
2849 {
2850         struct list_head *entry, *tmp;
2851         struct blk_move *bmv;
2852
2853         list_for_each_safe(entry, tmp, &blk_move_list) {
2854                 bmv = list_entry(entry, struct blk_move, list);
2855                 list_del(entry);
2856                 ext2fs_free_mem(&bmv);
2857         }
2858         return;
2859 }
2860
2861 static int resize_inode(ext2_filsys fs, unsigned long new_size)
2862 {
2863         errcode_t retval;
2864         int new_ino_blks_per_grp;
2865         ext2fs_block_bitmap bmap;
2866
2867         retval = ext2fs_read_inode_bitmap(fs);
2868         if (retval) {
2869                 fputs(_("Failed to read inode bitmap\n"), stderr);
2870                 return retval;
2871         }
2872         retval = ext2fs_read_block_bitmap(fs);
2873         if (retval) {
2874                 fputs(_("Failed to read block bitmap\n"), stderr);
2875                 return retval;
2876         }
2877         INIT_LIST_HEAD(&blk_move_list);
2878
2879
2880         new_ino_blks_per_grp = ext2fs_div_ceil(
2881                                         EXT2_INODES_PER_GROUP(fs->super)*
2882                                         new_size,
2883                                         fs->blocksize);
2884
2885         /* We may change the file system.
2886          * Mark the file system as invalid so that
2887          * the user is prompted to run fsck.
2888          */
2889         fs->super->s_state &= ~EXT2_VALID_FS;
2890
2891         retval = ext2fs_allocate_block_bitmap(fs, _("blocks to be moved"),
2892                                                 &bmap);
2893         if (retval) {
2894                 fputs(_("Failed to allocate block bitmap when "
2895                                 "increasing inode size\n"), stderr);
2896                 return retval;
2897         }
2898         retval = get_move_bitmaps(fs, new_ino_blks_per_grp, bmap);
2899         if (retval) {
2900                 fputs(_("Not enough space to increase inode size \n"), stderr);
2901                 goto err_out;
2902         }
2903         retval = move_block(fs, bmap);
2904         if (retval) {
2905                 fputs(_("Failed to relocate blocks during inode resize \n"),
2906                       stderr);
2907                 goto err_out;
2908         }
2909         retval = inode_scan_and_fix(fs, bmap);
2910         if (retval)
2911                 goto err_out_undo;
2912
2913         retval = group_desc_scan_and_fix(fs, bmap);
2914         if (retval)
2915                 goto err_out_undo;
2916
2917         retval = expand_inode_table(fs, new_size);
2918         if (retval)
2919                 goto err_out_undo;
2920
2921         ext2fs_calculate_summary_stats(fs, 1 /* super only */);
2922
2923         fs->super->s_state |= EXT2_VALID_FS;
2924         /* mark super block and block bitmap as dirty */
2925         ext2fs_mark_super_dirty(fs);
2926         ext2fs_mark_bb_dirty(fs);
2927
2928 err_out:
2929         free_blk_move_list();
2930         ext2fs_free_block_bitmap(bmap);
2931
2932         return retval;
2933
2934 err_out_undo:
2935         free_blk_move_list();
2936         ext2fs_free_block_bitmap(bmap);
2937         fputs(_("Error in resizing the inode size.\n"
2938                         "Run e2undo to undo the "
2939                         "file system changes. \n"), stderr);
2940
2941         return retval;
2942 }
2943
2944 static int tune2fs_setup_tdb(const char *name, io_manager *io_ptr)
2945 {
2946         errcode_t retval = 0;
2947         const char *tdb_dir;
2948         char *tdb_file = NULL;
2949         char *dev_name, *tmp_name;
2950
2951         /* (re)open a specific undo file */
2952         if (undo_file && undo_file[0] != 0) {
2953                 retval = set_undo_io_backing_manager(*io_ptr);
2954                 if (retval)
2955                         goto err;
2956                 *io_ptr = undo_io_manager;
2957                 retval = set_undo_io_backup_file(undo_file);
2958                 if (retval)
2959                         goto err;
2960                 printf(_("Overwriting existing filesystem; this can be undone "
2961                          "using the command:\n"
2962                          "    e2undo %s %s\n\n"),
2963                          undo_file, name);
2964                 return retval;
2965         }
2966
2967         /*
2968          * Configuration via a conf file would be
2969          * nice
2970          */
2971         tdb_dir = getenv("E2FSPROGS_UNDO_DIR");
2972         if (!tdb_dir)
2973                 tdb_dir = "/var/lib/e2fsprogs";
2974
2975         if (!strcmp(tdb_dir, "none") || (tdb_dir[0] == 0) ||
2976             access(tdb_dir, W_OK))
2977                 return 0;
2978
2979         tmp_name = strdup(name);
2980         if (!tmp_name)
2981                 goto errout;
2982         dev_name = basename(tmp_name);
2983         tdb_file = malloc(strlen(tdb_dir) + 9 + strlen(dev_name) + 7 + 1);
2984         if (!tdb_file) {
2985                 free(tmp_name);
2986                 goto errout;
2987         }
2988         sprintf(tdb_file, "%s/tune2fs-%s.e2undo", tdb_dir, dev_name);
2989         free(tmp_name);
2990
2991         if ((unlink(tdb_file) < 0) && (errno != ENOENT)) {
2992                 retval = errno;
2993                 com_err(program_name, retval,
2994                         _("while trying to delete %s"), tdb_file);
2995                 goto errout;
2996         }
2997
2998         retval = set_undo_io_backing_manager(*io_ptr);
2999         if (retval)
3000                 goto errout;
3001         *io_ptr = undo_io_manager;
3002         retval = set_undo_io_backup_file(tdb_file);
3003         if (retval)
3004                 goto errout;
3005         printf(_("Overwriting existing filesystem; this can be undone "
3006                  "using the command:\n"
3007                  "    e2undo %s %s\n\n"),
3008                  tdb_file, name);
3009
3010         free(tdb_file);
3011         return 0;
3012 errout:
3013         free(tdb_file);
3014 err:
3015         com_err("tune2fs", retval, "while trying to setup undo file\n");
3016         return retval;
3017 }
3018
3019 static int
3020 fs_update_journal_user(struct ext2_super_block *sb, __u8 old_uuid[UUID_SIZE])
3021 {
3022         int retval, nr_users, start;
3023         journal_superblock_t *jsb;
3024         ext2_filsys jfs;
3025         __u8 *j_uuid;
3026         char *journal_path;
3027         char uuid[UUID_STR_SIZE];
3028         char buf[SUPERBLOCK_SIZE] __attribute__ ((aligned(8)));
3029
3030         if (!ext2fs_has_feature_journal(sb) || uuid_is_null(sb->s_journal_uuid))
3031                 return 0;
3032
3033         uuid_unparse(sb->s_journal_uuid, uuid);
3034         journal_path = blkid_get_devname(NULL, "UUID", uuid);
3035         if (!journal_path)
3036                 return 0;
3037
3038         retval = ext2fs_open2(journal_path, io_options,
3039                               EXT2_FLAG_JOURNAL_DEV_OK | EXT2_FLAG_RW,
3040                               0, 0, unix_io_manager, &jfs);
3041         if (retval) {
3042                 com_err(program_name, retval,
3043                         _("while trying to open %s"),
3044                         journal_path);
3045                 return retval;
3046         }
3047
3048         retval = get_journal_sb(jfs, buf);
3049         if (retval != 0) {
3050                 if (retval == EXT2_ET_UNSUPP_FEATURE)
3051                         fprintf(stderr, _("%s is not a journal device.\n"),
3052                                 journal_path);
3053                 return retval;
3054         }
3055
3056         jsb = (journal_superblock_t *) buf;
3057         /* Find the filesystem UUID */
3058         nr_users = ntohl(jsb->s_nr_users);
3059         if (nr_users > JBD2_USERS_MAX) {
3060                 fprintf(stderr, _("Journal superblock is corrupted, nr_users\n"
3061                                  "is too high (%d).\n"), nr_users);
3062                 return EXT2_ET_CORRUPT_JOURNAL_SB;
3063         }
3064
3065         j_uuid = journal_user(old_uuid, jsb->s_users, nr_users);
3066         if (j_uuid == NULL) {
3067                 fputs(_("Filesystem's UUID not found on journal device.\n"),
3068                       stderr);
3069                 return EXT2_ET_LOAD_EXT_JOURNAL;
3070         }
3071
3072         memcpy(j_uuid, sb->s_uuid, UUID_SIZE);
3073
3074         start = ext2fs_journal_sb_start(jfs->blocksize);
3075         /* Write back the journal superblock */
3076         retval = io_channel_write_blk64(jfs->io, start, -SUPERBLOCK_SIZE, buf);
3077         if (retval != 0) {
3078                 com_err(program_name, retval,
3079                         "while writing journal superblock.");
3080                 return retval;
3081         }
3082
3083         ext2fs_close(jfs);
3084
3085         return 0;
3086 }
3087
3088 /*
3089  * Use FS_IOC_SETFSLABEL or FS_IOC_GETFSLABEL to set/get file system label
3090  * Return:      0 on success
3091  *              1 on error
3092  *              -1 when the old method should be used
3093  */
3094 static int handle_fslabel(int setlabel)
3095 {
3096 #ifdef __linux__
3097         errcode_t ret;
3098         int mnt_flags, fd;
3099         char label[FSLABEL_MAX];
3100         unsigned int maxlen = FSLABEL_MAX - 1;
3101         char mntpt[PATH_MAX + 1];
3102
3103         ret = ext2fs_check_mount_point(device_name, &mnt_flags,
3104                                           mntpt, sizeof(mntpt));
3105         if (ret)
3106                 return -1;
3107
3108         if (!(mnt_flags & EXT2_MF_MOUNTED) ||
3109             (setlabel && (mnt_flags & EXT2_MF_READONLY)))
3110                 return -1;
3111
3112         if (!mntpt[0])
3113                 return -1;
3114
3115         fd = open(mntpt, O_RDONLY);
3116         if (fd < 0)
3117                 return -1;
3118
3119         /* Get fs label */
3120         if (!setlabel) {
3121                 if (ioctl(fd, FS_IOC_GETFSLABEL, &label)) {
3122                         close(fd);
3123                         if (errno == ENOTTY)
3124                                 return -1;
3125                         com_err(mntpt, errno, _("while trying to get fs label"));
3126                         return 1;
3127                 }
3128                 close(fd);
3129                 printf("%.*s\n", EXT2_LEN_STR(label));
3130                 return 0;
3131         }
3132
3133         /* If it's extN file system, truncate the label to appropriate size */
3134         if (mnt_flags & EXT2_MF_EXTFS)
3135                 maxlen = EXT2_LABEL_LEN;
3136         if (strlen(new_label) > maxlen) {
3137                 fputs(_("Warning: label too long, truncating.\n"),
3138                       stderr);
3139                 new_label[maxlen] = '\0';
3140         }
3141
3142         /* Set fs label */
3143         if (ioctl(fd, FS_IOC_SETFSLABEL, new_label)) {
3144                 close(fd);
3145                 if (errno == ENOTTY)
3146                         return -1;
3147                 com_err(mntpt, errno, _("while trying to set fs label"));
3148                 return 1;
3149         }
3150         close(fd);
3151         return 0;
3152 #else
3153         return -1;
3154 #endif
3155 }
3156
3157 #ifndef BUILD_AS_LIB
3158 int main(int argc, char **argv)
3159 #else
3160 int tune2fs_main(int argc, char **argv)
3161 #endif  /* BUILD_AS_LIB */
3162 {
3163         errcode_t retval;
3164         ext2_filsys fs;
3165         struct ext2_super_block *sb;
3166         io_manager io_ptr, io_ptr_orig = NULL;
3167         int rc = 0;
3168         char default_undo_file[1] = { 0 };
3169         char mntpt[PATH_MAX + 1] = { 0 };
3170         int fd = -1;
3171         struct fsuuid *fsuuid = NULL;
3172
3173 #ifdef ENABLE_NLS
3174         setlocale(LC_MESSAGES, "");
3175         setlocale(LC_CTYPE, "");
3176         bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
3177         textdomain(NLS_CAT_NAME);
3178         set_com_err_gettext(gettext);
3179 #endif
3180         if (argc && *argv)
3181                 program_name = *argv;
3182         else
3183                 usage();
3184         add_error_table(&et_ext2_error_table);
3185
3186 #ifdef CONFIG_BUILD_FINDFS
3187         if (strcmp(get_progname(argv[0]), "findfs") == 0)
3188                 do_findfs(argc, argv);
3189 #endif
3190         if (strcmp(get_progname(argv[0]), "e2label") == 0)
3191                 parse_e2label_options(argc, argv);
3192         else
3193                 parse_tune2fs_options(argc, argv);
3194
3195 #ifdef CONFIG_TESTIO_DEBUG
3196         if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_DEBUG")) {
3197                 io_ptr = test_io_manager;
3198                 test_io_backing_manager = unix_io_manager;
3199         } else
3200 #endif
3201                 io_ptr = unix_io_manager;
3202
3203         /*
3204          * Try the get/set fs label using ioctls before we even attempt
3205          * to open the file system.
3206          */
3207         if (L_flag || print_label) {
3208                 rc = handle_fslabel(L_flag);
3209                 if (rc != -1) {
3210 #ifndef BUILD_AS_LIB
3211                         exit(rc);
3212 #endif
3213                         return rc;
3214                 }
3215                 rc = 0;
3216         }
3217
3218 retry_open:
3219         if ((open_flag & EXT2_FLAG_RW) == 0 || f_flag)
3220                 open_flag |= EXT2_FLAG_SKIP_MMP;
3221
3222         open_flag |= EXT2_FLAG_64BITS | EXT2_FLAG_THREADS |
3223                 EXT2_FLAG_JOURNAL_DEV_OK;
3224
3225         /* keep the filesystem struct around to dump MMP data */
3226         open_flag |= EXT2_FLAG_NOFREE_ON_ERROR;
3227
3228         retval = ext2fs_open2(device_name, io_options, open_flag,
3229                               0, 0, io_ptr, &fs);
3230         if (retval) {
3231                 com_err(program_name, retval,
3232                         _("while trying to open %s"),
3233                         device_name);
3234                 if (retval == EXT2_ET_MMP_FSCK_ON ||
3235                     retval == EXT2_ET_MMP_UNKNOWN_SEQ)
3236                         dump_mmp_msg(fs->mmp_buf,
3237                                      _("If you are sure the filesystem "
3238                                        "is not in use on any node, run:\n"
3239                                        "'tune2fs -f -E clear_mmp {device}'\n"));
3240                 else if (retval == EXT2_ET_MMP_FAILED)
3241                         dump_mmp_msg(fs->mmp_buf, NULL);
3242                 else if (retval == EXT2_ET_MMP_MAGIC_INVALID)
3243                         fprintf(stderr,
3244                                 _("MMP block magic is bad. Try to fix it by "
3245                                   "running:\n'e2fsck -f %s'\n"), device_name);
3246                 else if (retval == EXT2_ET_BAD_MAGIC)
3247                         check_plausibility(device_name, CHECK_FS_EXIST, NULL);
3248                 else if (retval != EXT2_ET_MMP_FAILED)
3249                         fprintf(stderr, "%s",
3250                              _("Couldn't find valid filesystem superblock.\n"));
3251
3252                 ext2fs_free(fs);
3253                 exit(1);
3254         }
3255         if (ext2fs_has_feature_journal_dev(fs->super)) {
3256                 fprintf(stderr, "%s", _("Cannot modify a journal device.\n"));
3257                 ext2fs_free(fs);
3258                 exit(1);
3259         }
3260         fs->default_bitmap_type = EXT2FS_BMAP64_RBTREE;
3261
3262         if (I_flag) {
3263                 /*
3264                  * Check the inode size is right so we can issue an
3265                  * error message and bail before setting up the tdb
3266                  * file.
3267                  */
3268                 if (new_inode_size == EXT2_INODE_SIZE(fs->super)) {
3269                         fprintf(stderr, _("The inode size is already %lu\n"),
3270                                 new_inode_size);
3271                         rc = 1;
3272                         goto closefs;
3273                 }
3274                 if (new_inode_size < EXT2_INODE_SIZE(fs->super)) {
3275                         fprintf(stderr, "%s",
3276                                 _("Shrinking inode size is not supported\n"));
3277                         rc = 1;
3278                         goto closefs;
3279                 }
3280                 if (new_inode_size > fs->blocksize) {
3281                         fprintf(stderr, _("Invalid inode size %lu (max %d)\n"),
3282                                 new_inode_size, fs->blocksize);
3283                         rc = 1;
3284                         goto closefs;
3285                 }
3286                 rc = check_fsck_needed(fs,
3287                         _("Resizing inodes could take some time."));
3288                 if (rc)
3289                         goto closefs;
3290                 /*
3291                  * If inode resize is requested use the
3292                  * Undo I/O manager
3293                  */
3294                 undo_file = default_undo_file;
3295         }
3296
3297         /* Set up an undo file */
3298         if (undo_file && io_ptr_orig == NULL) {
3299                 io_ptr_orig = io_ptr;
3300                 retval = tune2fs_setup_tdb(device_name, &io_ptr);
3301                 if (retval) {
3302                         rc = 1;
3303                         goto closefs;
3304                 }
3305                 if (io_ptr != io_ptr_orig) {
3306                         ext2fs_close_free(&fs);
3307                         goto retry_open;
3308                 }
3309         }
3310
3311         sb = fs->super;
3312         fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
3313
3314         if (print_label) {
3315                 /* For e2label emulation */
3316                 printf("%.*s\n", EXT2_LEN_STR(sb->s_volume_name));
3317                 remove_error_table(&et_ext2_error_table);
3318                 goto closefs;
3319         }
3320
3321         retval = ext2fs_check_mount_point(device_name, &mount_flags,
3322                                         mntpt, sizeof(mntpt));
3323         if (retval) {
3324                 com_err("ext2fs_check_mount_point", retval,
3325                         _("while determining whether %s is mounted."),
3326                         device_name);
3327                 rc = 1;
3328                 goto closefs;
3329         }
3330
3331 #ifdef NO_RECOVERY
3332         /* Warn if file system needs recovery and it is opened for writing. */
3333         if ((open_flag & EXT2_FLAG_RW) && !(mount_flags & EXT2_MF_MOUNTED) &&
3334             (sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) &&
3335             (sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER)) {
3336                 fprintf(stderr,
3337 _("Warning: The journal is dirty. You may wish to replay the journal like:\n\n"
3338   "\te2fsck -E journal_only %s\n\n"
3339   "then rerun this command.  Otherwise, any changes made may be overwritten\n"
3340   "by journal recovery.\n"), device_name);
3341         }
3342 #else
3343         /* Recover the journal if possible. */
3344         if ((open_flag & EXT2_FLAG_RW) && !(mount_flags & (EXT2_MF_BUSY | EXT2_MF_MOUNTED)) &&
3345             ext2fs_has_feature_journal_needs_recovery(fs->super)) {
3346                 printf(_("Recovering journal.\n"));
3347                 retval = ext2fs_run_ext3_journal(&fs);
3348                 if (retval) {
3349                         com_err("tune2fs", retval,
3350                                 "while recovering journal.\n");
3351                         printf(_("Please run e2fsck -fy %s.\n"), device_name);
3352                         if (!fs)
3353                                 exit(1);
3354                         rc = 1;
3355                         goto closefs;
3356                 }
3357                 sb = fs->super;
3358         }
3359 #endif
3360
3361         /* Normally we only need to write out the superblock */
3362         fs->flags |= EXT2_FLAG_SUPER_ONLY;
3363
3364         if (c_flag) {
3365                 if (max_mount_count == 65536)
3366                         max_mount_count = EXT2_DFL_MAX_MNT_COUNT +
3367                                 (random() % EXT2_DFL_MAX_MNT_COUNT);
3368                 sb->s_max_mnt_count = max_mount_count;
3369                 ext2fs_mark_super_dirty(fs);
3370                 printf(_("Setting maximal mount count to %d\n"),
3371                        max_mount_count);
3372         }
3373         if (C_flag) {
3374                 sb->s_mnt_count = mount_count;
3375                 ext2fs_mark_super_dirty(fs);
3376                 printf(_("Setting current mount count to %d\n"), mount_count);
3377         }
3378         if (e_flag) {
3379                 sb->s_errors = errors;
3380                 ext2fs_mark_super_dirty(fs);
3381                 printf(_("Setting error behavior to %d\n"), errors);
3382         }
3383         if (g_flag) {
3384                 sb->s_def_resgid = resgid;
3385                 ext2fs_mark_super_dirty(fs);
3386                 printf(_("Setting reserved blocks gid to %lu\n"), resgid);
3387         }
3388         if (i_flag) {
3389                 if ((unsigned long long)interval >= (1ULL << 32)) {
3390                         com_err(program_name, 0,
3391                                 _("interval between checks is too big (%lu)"),
3392                                 interval);
3393                         rc = 1;
3394                         goto closefs;
3395                 }
3396                 sb->s_checkinterval = interval;
3397                 ext2fs_mark_super_dirty(fs);
3398                 printf(_("Setting interval between checks to %lu seconds\n"),
3399                        interval);
3400         }
3401         if (m_flag) {
3402                 ext2fs_r_blocks_count_set(sb, reserved_ratio *
3403                                           ext2fs_blocks_count(sb) / 100.0);
3404                 ext2fs_mark_super_dirty(fs);
3405                 printf (_("Setting reserved blocks percentage to %g%% (%llu blocks)\n"),
3406                         reserved_ratio,
3407                         (unsigned long long) ext2fs_r_blocks_count(sb));
3408         }
3409         if (r_flag) {
3410                 if (reserved_blocks > ext2fs_blocks_count(sb)/2) {
3411                         com_err(program_name, 0,
3412                                 _("reserved blocks count is too big (%llu)"),
3413                                 (unsigned long long) reserved_blocks);
3414                         rc = 1;
3415                         goto closefs;
3416                 }
3417                 ext2fs_r_blocks_count_set(sb, reserved_blocks);
3418                 ext2fs_mark_super_dirty(fs);
3419                 printf(_("Setting reserved blocks count to %llu\n"),
3420                        (unsigned long long) reserved_blocks);
3421         }
3422         if (s_flag == 1) {
3423                 if (ext2fs_has_feature_sparse_super(sb)) {
3424                         fputs(_("\nThe filesystem already has sparse "
3425                                 "superblocks.\n"), stderr);
3426                 } else if (ext2fs_has_feature_meta_bg(sb)) {
3427                         fputs(_("\nSetting the sparse superblock flag not "
3428                                 "supported\nfor filesystems with "
3429                                 "the meta_bg feature enabled.\n"),
3430                                 stderr);
3431                         rc = 1;
3432                         goto closefs;
3433                 } else {
3434                         ext2fs_set_feature_sparse_super(sb);
3435                         sb->s_state &= ~EXT2_VALID_FS;
3436                         ext2fs_mark_super_dirty(fs);
3437                         printf(_("\nSparse superblock flag set.  %s"),
3438                                _(please_fsck));
3439                 }
3440         }
3441         if (s_flag == 0) {
3442                 fputs(_("\nClearing the sparse superblock flag not supported.\n"),
3443                       stderr);
3444                 rc = 1;
3445                 goto closefs;
3446         }
3447         if (T_flag) {
3448                 ext2fs_set_tstamp(sb, s_lastcheck, last_check_time);
3449                 ext2fs_mark_super_dirty(fs);
3450                 printf(_("Setting time filesystem last checked to %s\n"),
3451                        ctime(&last_check_time));
3452         }
3453         if (u_flag) {
3454                 sb->s_def_resuid = resuid;
3455                 ext2fs_mark_super_dirty(fs);
3456                 printf(_("Setting reserved blocks uid to %lu\n"), resuid);
3457         }
3458         if (L_flag) {
3459                 if (strlen(new_label) > sizeof(sb->s_volume_name))
3460                         fputs(_("Warning: label too long, truncating.\n"),
3461                               stderr);
3462                 memset(sb->s_volume_name, 0, sizeof(sb->s_volume_name));
3463                 strncpy((char *)sb->s_volume_name, new_label,
3464                         sizeof(sb->s_volume_name));
3465                 ext2fs_mark_super_dirty(fs);
3466         }
3467         if (M_flag) {
3468                 memset(sb->s_last_mounted, 0, sizeof(sb->s_last_mounted));
3469                 strncpy((char *)sb->s_last_mounted, new_last_mounted,
3470                         sizeof(sb->s_last_mounted));
3471                 ext2fs_mark_super_dirty(fs);
3472         }
3473         if (mntopts_cmd) {
3474                 rc = update_mntopts(fs, mntopts_cmd);
3475                 if (rc)
3476                         goto closefs;
3477         }
3478         if (features_cmd) {
3479                 rc = update_feature_set(fs, features_cmd);
3480                 if (rc)
3481                         goto closefs;
3482         }
3483         if (extended_cmd) {
3484                 rc = parse_extended_opts(fs, extended_cmd);
3485                 if (rc)
3486                         goto closefs;
3487                 if (clear_mmp && !f_flag) {
3488                         fputs(_("Error in using clear_mmp. "
3489                                 "It must be used with -f\n"),
3490                               stderr);
3491                         rc = 1;
3492                         goto closefs;
3493                 }
3494         }
3495         if (clear_mmp) {
3496                 rc = ext2fs_mmp_clear(fs);
3497                 goto closefs;
3498         }
3499         if (journal_size || journal_device) {
3500                 rc = add_journal(fs);
3501                 if (rc)
3502                         goto closefs;
3503         }
3504         if (orphan_file_blocks) {
3505                 errcode_t err;
3506
3507                 err = ext2fs_read_bitmaps(fs);
3508                 if (err) {
3509                         com_err(program_name, err, "%s",
3510                                 _("while loading bitmaps"));
3511                         rc = 1;
3512                         goto closefs;
3513                 }
3514                 err = ext2fs_create_orphan_file(fs, orphan_file_blocks);
3515                 if (err) {
3516                         com_err(program_name, err, "%s",
3517                                 _("while creating orphan file"));
3518                         rc = 1;
3519                         goto closefs;
3520                 }
3521         }
3522
3523         if (Q_flag) {
3524                 if (mount_flags & (EXT2_MF_BUSY | EXT2_MF_MOUNTED)) {
3525                         fputs(_("The quota feature may only be changed when "
3526                                 "the filesystem is unmounted and not in use.\n"), stderr);
3527                         rc = 1;
3528                         goto closefs;
3529                 }
3530                 rc = handle_quota_options(fs);
3531                 if (rc)
3532                         goto closefs;
3533         }
3534
3535         if (U_flag) {
3536                 int set_csum = 0;
3537                 dgrp_t i;
3538                 char buf[SUPERBLOCK_SIZE] __attribute__ ((aligned(8)));
3539                 __u8 old_uuid[UUID_SIZE];
3540                 uuid_t new_uuid;
3541                 errcode_t ret = -1;
3542
3543                 if (ext2fs_has_feature_stable_inodes(fs->super)) {
3544                         fputs(_("Cannot change the UUID of this filesystem "
3545                                 "because it has the stable_inodes feature "
3546                                 "flag.\n"), stderr);
3547                         exit(1);
3548                 }
3549
3550                 if (!ext2fs_has_feature_csum_seed(fs->super) &&
3551                     (ext2fs_has_feature_metadata_csum(fs->super) ||
3552                      ext2fs_has_feature_ea_inode(fs->super))) {
3553                         rc = check_fsck_needed(fs,
3554                                 _("Setting the UUID on this "
3555                                   "filesystem could take some time."));
3556                         if (rc)
3557                                 goto closefs;
3558                         rewrite_checksums = REWRITE_ALL;
3559                 }
3560
3561                 if (ext2fs_has_group_desc_csum(fs)) {
3562                         /*
3563                          * Changing the UUID on a metadata_csum FS requires
3564                          * rewriting all metadata, which can race with a
3565                          * mounted fs.  Don't allow that unless we're saving
3566                          * the checksum seed.
3567                          */
3568                         if ((mount_flags & EXT2_MF_MOUNTED) &&
3569                             !ext2fs_has_feature_csum_seed(fs->super) &&
3570                             ext2fs_has_feature_metadata_csum(fs->super)) {
3571                                 fputs(_("The UUID may only be "
3572                                         "changed when the filesystem is "
3573                                         "unmounted.\n"), stderr);
3574                                 fputs(_("If you only use kernels newer than "
3575                                         "v4.4, run 'tune2fs -O "
3576                                         "metadata_csum_seed' and re-run this "
3577                                         "command.\n"), stderr);
3578                                 try_confirm_csum_seed_support();
3579                                 rc = 1;
3580                                 goto closefs;
3581                         }
3582
3583                         /*
3584                          * Determine if the block group checksums are
3585                          * correct so we know whether or not to set
3586                          * them later on.
3587                          */
3588                         for (i = 0; i < fs->group_desc_count; i++)
3589                                 if (!ext2fs_group_desc_csum_verify(fs, i))
3590                                         break;
3591                         if (i >= fs->group_desc_count)
3592                                 set_csum = 1;
3593                 }
3594
3595 #ifdef __linux__
3596                 if ((mount_flags & EXT2_MF_MOUNTED) &&
3597                     !(mount_flags & EXT2_MF_READONLY) && mntpt[0]) {
3598                         fd = open(mntpt, O_RDONLY);
3599                         if (fd >= 0)
3600                                 fsuuid = malloc(sizeof(*fsuuid) + UUID_SIZE);
3601                         if (fsuuid) {
3602                                 fsuuid->fsu_len = UUID_SIZE;
3603                                 fsuuid->fsu_flags = 0;
3604                                 ret = ioctl(fd, EXT4_IOC_GETFSUUID, fsuuid);
3605                                 if (ret || fsuuid->fsu_len != UUID_SIZE) {
3606                                         free(fsuuid);
3607                                         fsuuid = NULL;
3608                                 }
3609                         }
3610                 }
3611 #endif
3612
3613                 memcpy(old_uuid, fsuuid ? fsuuid->fsu_uuid : sb->s_uuid,
3614                        UUID_SIZE);
3615                 if ((strcasecmp(requested_uuid, "null") == 0) ||
3616                     (strcasecmp(requested_uuid, "clear") == 0)) {
3617                         uuid_clear(new_uuid);
3618                 } else if (strcasecmp(requested_uuid, "time") == 0) {
3619                         uuid_generate_time(new_uuid);
3620                 } else if (strcasecmp(requested_uuid, "random") == 0) {
3621                         uuid_generate(new_uuid);
3622                 } else if (uuid_parse(requested_uuid, new_uuid)) {
3623                         com_err(program_name, 0, "%s",
3624                                 _("Invalid UUID format\n"));
3625                         rc = 1;
3626                         goto closefs;
3627                 }
3628
3629                 ret = -1;
3630 #ifdef __linux__
3631                 if (fsuuid) {
3632                         fsuuid->fsu_len = UUID_SIZE;
3633                         fsuuid->fsu_flags = 0;
3634                         memcpy(&fsuuid->fsu_uuid, new_uuid, UUID_SIZE);
3635                         ret = ioctl(fd, EXT4_IOC_SETFSUUID, fsuuid);
3636                 }
3637 #endif
3638                 /*
3639                  * If we can't set the UUID via the ioctl, fall
3640                  * back to directly modifying the superblock
3641                  .*/
3642                 if (ret) {
3643                         memcpy(sb->s_uuid, new_uuid, UUID_SIZE);
3644                         ext2fs_init_csum_seed(fs);
3645                         if (set_csum) {
3646                                 for (i = 0; i < fs->group_desc_count; i++)
3647                                         ext2fs_group_desc_csum_set(fs, i);
3648                                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
3649                         }
3650                         ext2fs_mark_super_dirty(fs);
3651                 }
3652
3653                 /* If this is a journal dev, we need to copy UUID into jsb */
3654                 if (!(rc = get_journal_sb(fs, buf))) {
3655                         journal_superblock_t *jsb;
3656
3657                         jsb = (journal_superblock_t *) buf;
3658                         fputs(_("Need to update journal superblock.\n"), stdout);
3659                         memcpy(jsb->s_uuid, sb->s_uuid, sizeof(sb->s_uuid));
3660
3661                         /* Writeback the journal superblock */
3662                         if ((rc = io_channel_write_blk64(fs->io,
3663                                 ext2fs_journal_sb_start(fs->blocksize),
3664                                         -SUPERBLOCK_SIZE, buf)))
3665                                 goto closefs;
3666                 } else if (rc != EXT2_ET_UNSUPP_FEATURE)
3667                         goto closefs;
3668                 else {
3669                         rc = 0; /** Reset rc to avoid ext2fs_mmp_stop() */
3670
3671                         if ((rc = fs_update_journal_user(sb, old_uuid)))
3672                                 goto closefs;
3673                 }
3674         }
3675
3676         if (I_flag) {
3677                 if (mount_flags & (EXT2_MF_BUSY | EXT2_MF_MOUNTED)) {
3678                         fputs(_("The inode size may only be "
3679                                 "changed when the filesystem is "
3680                                 "unmounted and not in use.\n"), stderr);
3681                         rc = 1;
3682                         goto closefs;
3683                 }
3684                 if (ext2fs_has_feature_flex_bg(fs->super)) {
3685                         fputs(_("Changing the inode size not supported for "
3686                                 "filesystems with the flex_bg\n"
3687                                 "feature enabled.\n"),
3688                               stderr);
3689                         rc = 1;
3690                         goto closefs;
3691                 }
3692                 /*
3693                  * We want to update group descriptor also
3694                  * with the new free inode count
3695                  */
3696                 if (rewrite_checksums)
3697                         fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
3698                 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
3699                 retval = resize_inode(fs, new_inode_size);
3700                 if (rewrite_checksums)
3701                         fs->flags &= ~EXT2_FLAG_IGNORE_CSUM_ERRORS;
3702                 if (retval == 0) {
3703                         printf(_("Setting inode size %lu\n"),
3704                                                         new_inode_size);
3705                         rewrite_checksums = REWRITE_ALL;
3706                 } else {
3707                         printf("%s", _("Failed to change inode size\n"));
3708                         rc = 1;
3709                         goto closefs;
3710                 }
3711         }
3712
3713         if (rewrite_checksums) {
3714                 retval = rewrite_metadata_checksums(fs, rewrite_checksums);
3715                 if (retval != 0) {
3716                         printf("Failed to rewrite metadata checksums\n");
3717                         rc = 1;
3718                         goto closefs;
3719                 }
3720         }
3721
3722         if (l_flag)
3723                 list_super(sb);
3724         if (stride_set) {
3725                 sb->s_raid_stride = stride;
3726                 ext2fs_mark_super_dirty(fs);
3727                 printf(_("Setting stride size to %d\n"), stride);
3728         }
3729         if (stripe_width_set) {
3730                 sb->s_raid_stripe_width = stripe_width;
3731                 ext2fs_mark_super_dirty(fs);
3732                 printf(_("Setting stripe width to %d\n"), stripe_width);
3733         }
3734         if (ext_mount_opts) {
3735                 strncpy((char *)(fs->super->s_mount_opts), ext_mount_opts,
3736                         sizeof(fs->super->s_mount_opts));
3737                 fs->super->s_mount_opts[sizeof(fs->super->s_mount_opts)-1] = 0;
3738                 ext2fs_mark_super_dirty(fs);
3739                 printf(_("Setting extended default mount options to '%s'\n"),
3740                        ext_mount_opts);
3741                 free(ext_mount_opts);
3742         }
3743
3744         free(device_name);
3745         remove_error_table(&et_ext2_error_table);
3746
3747 closefs:
3748         if (fd >= 0)
3749                 close(fd);
3750         if (fsuuid)
3751                 free(fsuuid);
3752         if (rc) {
3753                 ext2fs_mmp_stop(fs);
3754 #ifndef BUILD_AS_LIB
3755                 exit(1);
3756 #endif
3757         }
3758
3759         if (feature_64bit)
3760                 convert_64bit(fs, feature_64bit);
3761
3762         retval = ext2fs_close_free(&fs);
3763         if (retval) {
3764                 com_err("tune2fs", retval,
3765                         _("while writing out and closing file system"));
3766                 rc = 1;
3767         }
3768
3769         return rc;
3770 }