e2fsck/journal.c

   1 /*
   2  * journal.c --- code for handling the "ext3" journal
   3  *
   4  * Copyright (C) 2000 Andreas Dilger
   5  * Copyright (C) 2000 Theodore Ts'o
   6  *
   7  * Parts of the code are based on fs/jfs/journal.c by Stephen C. Tweedie
   8  * Copyright (C) 1999 Red Hat Software
   9  *
  10  * This file may be redistributed under the terms of the
  11  * GNU General Public License version 2 or at your discretion
  12  * any later version.
  13  */
  14
  15 #include "config.h"
  16 #ifdef HAVE_SYS_MOUNT_H
  17 #include <sys/param.h>
  18 #include <sys/mount.h>
  19 #define MNT_FL (MS_MGC_VAL | MS_RDONLY)
  20 #endif
  21 #ifdef HAVE_SYS_STAT_H
  22 #include <sys/stat.h>
  23 #endif
  24
  25 #define E2FSCK_INCLUDE_INLINE_FUNCS
  26 #include "jfs_user.h"
  27 #include "problem.h"
  28 #include "uuid/uuid.h"
  29
  30 #ifdef CONFIG_JBD_DEBUG         /* Enabled by configure --enable-jfs-debug */
  31 static int bh_count = 0;
  32 #endif
  33
  34 /*
  35  * Define USE_INODE_IO to use the inode_io.c / fileio.c codepaths.
  36  * This creates a larger static binary, and a smaller binary using
  37  * shared libraries.  It's also probably slightly less CPU-efficient,
  38  * which is why it's not on by default.  But, it's a good way of
  39  * testing the functions in inode_io.c and fileio.c.
  40  */
  41 #undef USE_INODE_IO
  42
  43 /* Checksumming functions */
  44 static int e2fsck_journal_verify_csum_type(journal_t *j,
  45                                            journal_superblock_t *jsb)
  46 {
  47         if (!JFS_HAS_INCOMPAT_FEATURE(j, JFS_FEATURE_INCOMPAT_CSUM_V2))
  48                 return 1;
  49
  50         return jsb->s_checksum_type == JBD2_CRC32C_CHKSUM;
  51 }
  52
  53 static __u32 e2fsck_journal_sb_csum(journal_superblock_t *jsb)
  54 {
  55         __u32 crc, old_crc;
  56
  57         old_crc = jsb->s_checksum;
  58         jsb->s_checksum = 0;
  59         crc = ext2fs_crc32c_le(~0, (unsigned char *)jsb,
  60                                sizeof(journal_superblock_t));
  61         jsb->s_checksum = old_crc;
  62
  63         return crc;
  64 }
  65
  66 static int e2fsck_journal_sb_csum_verify(journal_t *j,
  67                                          journal_superblock_t *jsb)
  68 {
  69         __u32 provided, calculated;
  70
  71         if (!JFS_HAS_INCOMPAT_FEATURE(j, JFS_FEATURE_INCOMPAT_CSUM_V2))
  72                 return 1;
  73
  74         provided = ext2fs_be32_to_cpu(jsb->s_checksum);
  75         calculated = e2fsck_journal_sb_csum(jsb);
  76
  77         return provided == calculated;
  78 }
  79
  80 static errcode_t e2fsck_journal_sb_csum_set(journal_t *j,
  81                                             journal_superblock_t *jsb)
  82 {
  83         __u32 crc;
  84
  85         if (!JFS_HAS_INCOMPAT_FEATURE(j, JFS_FEATURE_INCOMPAT_CSUM_V2))
  86                 return 0;
  87
  88         crc = e2fsck_journal_sb_csum(jsb);
  89         jsb->s_checksum = ext2fs_cpu_to_be32(crc);
  90         return 0;
  91 }
  92
  93 /* Kernel compatibility functions for handling the journal.  These allow us
  94  * to use the recovery.c file virtually unchanged from the kernel, so we
  95  * don't have to do much to keep kernel and user recovery in sync.
  96  */
  97 int journal_bmap(journal_t *journal, blk64_t block, unsigned long long *phys)
  98 {
  99 #ifdef USE_INODE_IO
 100         *phys = block;
 101         return 0;
 102 #else
 103         struct inode    *inode = journal->j_inode;
 104         errcode_t       retval;
 105         blk64_t         pblk;
 106
 107         if (!inode) {
 108                 *phys = block;
 109                 return 0;
 110         }
 111
 112         retval= ext2fs_bmap2(inode->i_ctx->fs, inode->i_ino,
 113                              &inode->i_ext2, NULL, 0, block, 0, &pblk);
 114         *phys = pblk;
 115         return (retval);
 116 #endif
 117 }
 118
 119 struct buffer_head *getblk(kdev_t kdev, blk64_t blocknr, int blocksize)
 120 {
 121         struct buffer_head *bh;
 122         int bufsize = sizeof(*bh) + kdev->k_ctx->fs->blocksize -
 123                 sizeof(bh->b_data);
 124
 125         bh = e2fsck_allocate_memory(kdev->k_ctx, bufsize, "block buffer");
 126         if (!bh)
 127                 return NULL;
 128
 129 #ifdef CONFIG_JBD_DEBUG
 130         if (journal_enable_debug >= 3)
 131                 bh_count++;
 132 #endif
 133         jfs_debug(4, "getblk for block %llu (%d bytes)(total %d)\n",
 134                   (unsigned long long) blocknr, blocksize, bh_count);
 135
 136         bh->b_ctx = kdev->k_ctx;
 137         if (kdev->k_dev == K_DEV_FS)
 138                 bh->b_io = kdev->k_ctx->fs->io;
 139         else
 140                 bh->b_io = kdev->k_ctx->journal_io;
 141         bh->b_size = blocksize;
 142         bh->b_blocknr = blocknr;
 143
 144         return bh;
 145 }
 146
 147 void sync_blockdev(kdev_t kdev)
 148 {
 149         io_channel      io;
 150
 151         if (kdev->k_dev == K_DEV_FS)
 152                 io = kdev->k_ctx->fs->io;
 153         else
 154                 io = kdev->k_ctx->journal_io;
 155
 156         io_channel_flush(io);
 157 }
 158
 159 void ll_rw_block(int rw, int nr, struct buffer_head *bhp[])
 160 {
 161         int retval;
 162         struct buffer_head *bh;
 163
 164         for (; nr > 0; --nr) {
 165                 bh = *bhp++;
 166                 if (rw == READ && !bh->b_uptodate) {
 167                         jfs_debug(3, "reading block %llu/%p\n",
 168                                   bh->b_blocknr, (void *) bh);
 169                         retval = io_channel_read_blk64(bh->b_io,
 170                                                      bh->b_blocknr,
 171                                                      1, bh->b_data);
 172                         if (retval) {
 173                                 com_err(bh->b_ctx->device_name, retval,
 174                                         "while reading block %llu\n",
 175                                         bh->b_blocknr);
 176                                 bh->b_err = retval;
 177                                 continue;
 178                         }
 179                         bh->b_uptodate = 1;
 180                 } else if (rw == WRITE && bh->b_dirty) {
 181                         jfs_debug(3, "writing block %llu/%p\n",
 182                                   bh->b_blocknr,
 183                                   (void *) bh);
 184                         retval = io_channel_write_blk64(bh->b_io,
 185                                                       bh->b_blocknr,
 186                                                       1, bh->b_data);
 187                         if (retval) {
 188                                 com_err(bh->b_ctx->device_name, retval,
 189                                         "while writing block %llu\n",
 190                                         bh->b_blocknr);
 191                                 bh->b_err = retval;
 192                                 continue;
 193                         }
 194                         bh->b_dirty = 0;
 195                         bh->b_uptodate = 1;
 196                 } else {
 197                         jfs_debug(3, "no-op %s for block %llu\n",
 198                                   rw == READ ? "read" : "write",
 199                                   bh->b_blocknr);
 200                 }
 201         }
 202 }
 203
 204 void mark_buffer_dirty(struct buffer_head *bh)
 205 {
 206         bh->b_dirty = 1;
 207 }
 208
 209 static void mark_buffer_clean(struct buffer_head * bh)
 210 {
 211         bh->b_dirty = 0;
 212 }
 213
 214 void brelse(struct buffer_head *bh)
 215 {
 216         if (bh->b_dirty)
 217                 ll_rw_block(WRITE, 1, &bh);
 218         jfs_debug(3, "freeing block %llu/%p (total %d)\n",
 219                   bh->b_blocknr, (void *) bh, --bh_count);
 220         ext2fs_free_mem(&bh);
 221 }
 222
 223 int buffer_uptodate(struct buffer_head *bh)
 224 {
 225         return bh->b_uptodate;
 226 }
 227
 228 void mark_buffer_uptodate(struct buffer_head *bh, int val)
 229 {
 230         bh->b_uptodate = val;
 231 }
 232
 233 void wait_on_buffer(struct buffer_head *bh)
 234 {
 235         if (!bh->b_uptodate)
 236                 ll_rw_block(READ, 1, &bh);
 237 }
 238
 239
 240 static void e2fsck_clear_recover(e2fsck_t ctx, int error)
 241 {
 242         ctx->fs->super->s_feature_incompat &= ~EXT3_FEATURE_INCOMPAT_RECOVER;
 243
 244         /* if we had an error doing journal recovery, we need a full fsck */
 245         if (error)
 246                 ctx->fs->super->s_state &= ~EXT2_VALID_FS;
 247         ext2fs_mark_super_dirty(ctx->fs);
 248 }
 249
 250 /*
 251  * This is a helper function to check the validity of the journal.
 252  */
 253 struct process_block_struct {
 254         e2_blkcnt_t     last_block;
 255 };
 256
 257 static int process_journal_block(ext2_filsys fs,
 258                                  blk64_t        *block_nr,
 259                                  e2_blkcnt_t blockcnt,
 260                                  blk64_t ref_block EXT2FS_ATTR((unused)),
 261                                  int ref_offset EXT2FS_ATTR((unused)),
 262                                  void *priv_data)
 263 {
 264         struct process_block_struct *p;
 265         blk64_t blk = *block_nr;
 266
 267         p = (struct process_block_struct *) priv_data;
 268
 269         if (!blk || blk < fs->super->s_first_data_block ||
 270             blk >= ext2fs_blocks_count(fs->super))
 271                 return BLOCK_ABORT;
 272
 273         if (blockcnt >= 0)
 274                 p->last_block = blockcnt;
 275         return 0;
 276 }
 277
 278 static errcode_t e2fsck_get_journal(e2fsck_t ctx, journal_t **ret_journal)
 279 {
 280         struct process_block_struct pb;
 281         struct ext2_super_block *sb = ctx->fs->super;
 282         struct ext2_super_block jsuper;
 283         struct problem_context  pctx;
 284         struct buffer_head      *bh;
 285         struct inode            *j_inode = NULL;
 286         struct kdev_s           *dev_fs = NULL, *dev_journal;
 287         const char              *journal_name = 0;
 288         journal_t               *journal = NULL;
 289         errcode_t               retval = 0;
 290         io_manager              io_ptr = 0;
 291         unsigned long long      start = 0;
 292         int                     ext_journal = 0;
 293         int                     tried_backup_jnl = 0;
 294
 295         clear_problem_context(&pctx);
 296
 297         journal = e2fsck_allocate_memory(ctx, sizeof(journal_t), "journal");
 298         if (!journal) {
 299                 return EXT2_ET_NO_MEMORY;
 300         }
 301
 302         dev_fs = e2fsck_allocate_memory(ctx, 2*sizeof(struct kdev_s), "kdev");
 303         if (!dev_fs) {
 304                 retval = EXT2_ET_NO_MEMORY;
 305                 goto errout;
 306         }
 307         dev_journal = dev_fs+1;
 308
 309         dev_fs->k_ctx = dev_journal->k_ctx = ctx;
 310         dev_fs->k_dev = K_DEV_FS;
 311         dev_journal->k_dev = K_DEV_JOURNAL;
 312
 313         journal->j_dev = dev_journal;
 314         journal->j_fs_dev = dev_fs;
 315         journal->j_inode = NULL;
 316         journal->j_blocksize = ctx->fs->blocksize;
 317
 318         if (uuid_is_null(sb->s_journal_uuid)) {
 319                 if (!sb->s_journal_inum) {
 320                         retval = EXT2_ET_BAD_INODE_NUM;
 321                         goto errout;
 322                 }
 323                 j_inode = e2fsck_allocate_memory(ctx, sizeof(*j_inode),
 324                                                  "journal inode");
 325                 if (!j_inode) {
 326                         retval = EXT2_ET_NO_MEMORY;
 327                         goto errout;
 328                 }
 329
 330                 j_inode->i_ctx = ctx;
 331                 j_inode->i_ino = sb->s_journal_inum;
 332
 333                 if ((retval = ext2fs_read_inode(ctx->fs,
 334                                                 sb->s_journal_inum,
 335                                                 &j_inode->i_ext2))) {
 336                 try_backup_journal:
 337                         if (sb->s_jnl_backup_type != EXT3_JNL_BACKUP_BLOCKS ||
 338                             tried_backup_jnl)
 339                                 goto errout;
 340                         memset(&j_inode->i_ext2, 0, sizeof(struct ext2_inode));
 341                         memcpy(&j_inode->i_ext2.i_block[0], sb->s_jnl_blocks,
 342                                EXT2_N_BLOCKS*4);
 343                         j_inode->i_ext2.i_size_high = sb->s_jnl_blocks[15];
 344                         j_inode->i_ext2.i_size = sb->s_jnl_blocks[16];
 345                         j_inode->i_ext2.i_links_count = 1;
 346                         j_inode->i_ext2.i_mode = LINUX_S_IFREG | 0600;
 347                         e2fsck_use_inode_shortcuts(ctx, 1);
 348                         ctx->stashed_ino = j_inode->i_ino;
 349                         ctx->stashed_inode = &j_inode->i_ext2;
 350                         tried_backup_jnl++;
 351                 }
 352                 if (!j_inode->i_ext2.i_links_count ||
 353                     !LINUX_S_ISREG(j_inode->i_ext2.i_mode)) {
 354                         retval = EXT2_ET_NO_JOURNAL;
 355                         goto try_backup_journal;
 356                 }
 357                 if (EXT2_I_SIZE(&j_inode->i_ext2) / journal->j_blocksize <
 358                     JFS_MIN_JOURNAL_BLOCKS) {
 359                         retval = EXT2_ET_JOURNAL_TOO_SMALL;
 360                         goto try_backup_journal;
 361                 }
 362                 pb.last_block = -1;
 363                 retval = ext2fs_block_iterate3(ctx->fs, j_inode->i_ino,
 364                                                BLOCK_FLAG_HOLE, 0,
 365                                                process_journal_block, &pb);
 366                 if ((pb.last_block + 1) * ctx->fs->blocksize <
 367                     (int) EXT2_I_SIZE(&j_inode->i_ext2)) {
 368                         retval = EXT2_ET_JOURNAL_TOO_SMALL;
 369                         goto try_backup_journal;
 370                 }
 371                 if (tried_backup_jnl && !(ctx->options & E2F_OPT_READONLY)) {
 372                         retval = ext2fs_write_inode(ctx->fs, sb->s_journal_inum,
 373                                                     &j_inode->i_ext2);
 374                         if (retval)
 375                                 goto errout;
 376                 }
 377
 378                 journal->j_maxlen = EXT2_I_SIZE(&j_inode->i_ext2) /
 379                         journal->j_blocksize;
 380
 381 #ifdef USE_INODE_IO
 382                 retval = ext2fs_inode_io_intern2(ctx->fs, sb->s_journal_inum,
 383                                                  &j_inode->i_ext2,
 384                                                  &journal_name);
 385                 if (retval)
 386                         goto errout;
 387
 388                 io_ptr = inode_io_manager;
 389 #else
 390                 journal->j_inode = j_inode;
 391                 ctx->journal_io = ctx->fs->io;
 392                 if ((retval = journal_bmap(journal, 0, &start)) != 0)
 393                         goto errout;
 394 #endif
 395         } else {
 396                 ext_journal = 1;
 397                 if (!ctx->journal_name) {
 398                         char uuid[37];
 399
 400                         uuid_unparse(sb->s_journal_uuid, uuid);
 401                         ctx->journal_name = blkid_get_devname(ctx->blkid,
 402                                                               "UUID", uuid);
 403                         if (!ctx->journal_name)
 404                                 ctx->journal_name = blkid_devno_to_devname(sb->s_journal_dev);
 405                 }
 406                 journal_name = ctx->journal_name;
 407
 408                 if (!journal_name) {
 409                         fix_problem(ctx, PR_0_CANT_FIND_JOURNAL, &pctx);
 410                         retval = EXT2_ET_LOAD_EXT_JOURNAL;
 411                         goto errout;
 412                 }
 413
 414                 jfs_debug(1, "Using journal file %s\n", journal_name);
 415                 io_ptr = unix_io_manager;
 416         }
 417
 418 #if 0
 419         test_io_backing_manager = io_ptr;
 420         io_ptr = test_io_manager;
 421 #endif
 422 #ifndef USE_INODE_IO
 423         if (ext_journal)
 424 #endif
 425         {
 426                 int flags = IO_FLAG_RW;
 427                 if (!(ctx->mount_flags & EXT2_MF_ISROOT &&
 428                       ctx->mount_flags & EXT2_MF_READONLY))
 429                         flags |= IO_FLAG_EXCLUSIVE;
 430                 if ((ctx->mount_flags & EXT2_MF_READONLY) &&
 431                     (ctx->options & E2F_OPT_FORCE))
 432                         flags &= ~IO_FLAG_EXCLUSIVE;
 433
 434
 435                 retval = io_ptr->open(journal_name, flags,
 436                                       &ctx->journal_io);
 437         }
 438         if (retval)
 439                 goto errout;
 440
 441         io_channel_set_blksize(ctx->journal_io, ctx->fs->blocksize);
 442
 443         if (ext_journal) {
 444                 if (ctx->fs->blocksize == 1024)
 445                         start = 1;
 446                 bh = getblk(dev_journal, start, ctx->fs->blocksize);
 447                 if (!bh) {
 448                         retval = EXT2_ET_NO_MEMORY;
 449                         goto errout;
 450                 }
 451                 ll_rw_block(READ, 1, &bh);
 452                 if ((retval = bh->b_err) != 0) {
 453                         brelse(bh);
 454                         goto errout;
 455                 }
 456                 memcpy(&jsuper, start ? bh->b_data :  bh->b_data + 1024,
 457                        sizeof(jsuper));
 458                 brelse(bh);
 459 #ifdef WORDS_BIGENDIAN
 460                 if (jsuper.s_magic == ext2fs_swab16(EXT2_SUPER_MAGIC))
 461                         ext2fs_swap_super(&jsuper);
 462 #endif
 463                 if (jsuper.s_magic != EXT2_SUPER_MAGIC ||
 464                     !(jsuper.s_feature_incompat & EXT3_FEATURE_INCOMPAT_JOURNAL_DEV)) {
 465                         fix_problem(ctx, PR_0_EXT_JOURNAL_BAD_SUPER, &pctx);
 466                         retval = EXT2_ET_LOAD_EXT_JOURNAL;
 467                         goto errout;
 468                 }
 469                 /* Make sure the journal UUID is correct */
 470                 if (memcmp(jsuper.s_uuid, ctx->fs->super->s_journal_uuid,
 471                            sizeof(jsuper.s_uuid))) {
 472                         fix_problem(ctx, PR_0_JOURNAL_BAD_UUID, &pctx);
 473                         retval = EXT2_ET_LOAD_EXT_JOURNAL;
 474                         goto errout;
 475                 }
 476
 477                 journal->j_maxlen = ext2fs_blocks_count(&jsuper);
 478                 start++;
 479         }
 480
 481         if (!(bh = getblk(dev_journal, start, journal->j_blocksize))) {
 482                 retval = EXT2_ET_NO_MEMORY;
 483                 goto errout;
 484         }
 485
 486         journal->j_sb_buffer = bh;
 487         journal->j_superblock = (journal_superblock_t *)bh->b_data;
 488
 489 #ifdef USE_INODE_IO
 490         if (j_inode)
 491                 ext2fs_free_mem(&j_inode);
 492 #endif
 493
 494         *ret_journal = journal;
 495         e2fsck_use_inode_shortcuts(ctx, 0);
 496         return 0;
 497
 498 errout:
 499         e2fsck_use_inode_shortcuts(ctx, 0);
 500         if (dev_fs)
 501                 ext2fs_free_mem(&dev_fs);
 502         if (j_inode)
 503                 ext2fs_free_mem(&j_inode);
 504         if (journal)
 505                 ext2fs_free_mem(&journal);
 506         return retval;
 507 }
 508
 509 static errcode_t e2fsck_journal_fix_bad_inode(e2fsck_t ctx,
 510                                               struct problem_context *pctx)
 511 {
 512         struct ext2_super_block *sb = ctx->fs->super;
 513         int recover = ctx->fs->super->s_feature_incompat &
 514                 EXT3_FEATURE_INCOMPAT_RECOVER;
 515         int has_journal = ctx->fs->super->s_feature_compat &
 516                 EXT3_FEATURE_COMPAT_HAS_JOURNAL;
 517
 518         if (has_journal || sb->s_journal_inum) {
 519                 /* The journal inode is bogus, remove and force full fsck */
 520                 pctx->ino = sb->s_journal_inum;
 521                 if (fix_problem(ctx, PR_0_JOURNAL_BAD_INODE, pctx)) {
 522                         if (has_journal && sb->s_journal_inum)
 523                                 printf("*** ext3 journal has been deleted - "
 524                                        "filesystem is now ext2 only ***\n\n");
 525                         sb->s_feature_compat &= ~EXT3_FEATURE_COMPAT_HAS_JOURNAL;
 526                         sb->s_journal_inum = 0;
 527                         ctx->flags |= E2F_FLAG_JOURNAL_INODE;
 528                         ctx->fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
 529                         e2fsck_clear_recover(ctx, 1);
 530                         return 0;
 531                 }
 532                 return EXT2_ET_BAD_INODE_NUM;
 533         } else if (recover) {
 534                 if (fix_problem(ctx, PR_0_JOURNAL_RECOVER_SET, pctx)) {
 535                         e2fsck_clear_recover(ctx, 1);
 536                         return 0;
 537                 }
 538                 return EXT2_ET_UNSUPP_FEATURE;
 539         }
 540         return 0;
 541 }
 542
 543 #define V1_SB_SIZE      0x0024
 544 static void clear_v2_journal_fields(journal_t *journal)
 545 {
 546         e2fsck_t ctx = journal->j_dev->k_ctx;
 547         struct problem_context pctx;
 548
 549         clear_problem_context(&pctx);
 550
 551         if (!fix_problem(ctx, PR_0_CLEAR_V2_JOURNAL, &pctx))
 552                 return;
 553
 554         memset(((char *) journal->j_superblock) + V1_SB_SIZE, 0,
 555                ctx->fs->blocksize-V1_SB_SIZE);
 556         mark_buffer_dirty(journal->j_sb_buffer);
 557 }
 558
 559
 560 static errcode_t e2fsck_journal_load(journal_t *journal)
 561 {
 562         e2fsck_t ctx = journal->j_dev->k_ctx;
 563         journal_superblock_t *jsb;
 564         struct buffer_head *jbh = journal->j_sb_buffer;
 565         struct problem_context pctx;
 566
 567         clear_problem_context(&pctx);
 568
 569         ll_rw_block(READ, 1, &jbh);
 570         if (jbh->b_err) {
 571                 com_err(ctx->device_name, jbh->b_err,
 572                         _("reading journal superblock\n"));
 573                 return jbh->b_err;
 574         }
 575
 576         jsb = journal->j_superblock;
 577         /* If we don't even have JFS_MAGIC, we probably have a wrong inode */
 578         if (jsb->s_header.h_magic != htonl(JFS_MAGIC_NUMBER))
 579                 return e2fsck_journal_fix_bad_inode(ctx, &pctx);
 580
 581         switch (ntohl(jsb->s_header.h_blocktype)) {
 582         case JFS_SUPERBLOCK_V1:
 583                 journal->j_format_version = 1;
 584                 if (jsb->s_feature_compat ||
 585                     jsb->s_feature_incompat ||
 586                     jsb->s_feature_ro_compat ||
 587                     jsb->s_nr_users)
 588                         clear_v2_journal_fields(journal);
 589                 break;
 590
 591         case JFS_SUPERBLOCK_V2:
 592                 journal->j_format_version = 2;
 593                 if (ntohl(jsb->s_nr_users) > 1 &&
 594                     uuid_is_null(ctx->fs->super->s_journal_uuid))
 595                         clear_v2_journal_fields(journal);
 596                 if (ntohl(jsb->s_nr_users) > 1) {
 597                         fix_problem(ctx, PR_0_JOURNAL_UNSUPP_MULTIFS, &pctx);
 598                         return EXT2_ET_JOURNAL_UNSUPP_VERSION;
 599                 }
 600                 break;
 601
 602         /*
 603          * These should never appear in a journal super block, so if
 604          * they do, the journal is badly corrupted.
 605          */
 606         case JFS_DESCRIPTOR_BLOCK:
 607         case JFS_COMMIT_BLOCK:
 608         case JFS_REVOKE_BLOCK:
 609                 return EXT2_ET_CORRUPT_SUPERBLOCK;
 610
 611         /* If we don't understand the superblock major type, but there
 612          * is a magic number, then it is likely to be a new format we
 613          * just don't understand, so leave it alone. */
 614         default:
 615                 return EXT2_ET_JOURNAL_UNSUPP_VERSION;
 616         }
 617
 618         if (JFS_HAS_INCOMPAT_FEATURE(journal, ~JFS_KNOWN_INCOMPAT_FEATURES))
 619                 return EXT2_ET_UNSUPP_FEATURE;
 620
 621         if (JFS_HAS_RO_COMPAT_FEATURE(journal, ~JFS_KNOWN_ROCOMPAT_FEATURES))
 622                 return EXT2_ET_RO_UNSUPP_FEATURE;
 623
 624         /* Checksum v1 and v2 are mutually exclusive features. */
 625         if (JFS_HAS_INCOMPAT_FEATURE(journal, JFS_FEATURE_INCOMPAT_CSUM_V2) &&
 626             JFS_HAS_COMPAT_FEATURE(journal, JFS_FEATURE_COMPAT_CHECKSUM))
 627                 return EXT2_ET_CORRUPT_SUPERBLOCK;
 628
 629         if (!e2fsck_journal_verify_csum_type(journal, jsb) ||
 630             !e2fsck_journal_sb_csum_verify(journal, jsb))
 631                 return EXT2_ET_CORRUPT_SUPERBLOCK;
 632
 633         /* We have now checked whether we know enough about the journal
 634          * format to be able to proceed safely, so any other checks that
 635          * fail we should attempt to recover from. */
 636         if (jsb->s_blocksize != htonl(journal->j_blocksize)) {
 637                 com_err(ctx->program_name, EXT2_ET_CORRUPT_SUPERBLOCK,
 638                         _("%s: no valid journal superblock found\n"),
 639                         ctx->device_name);
 640                 return EXT2_ET_CORRUPT_SUPERBLOCK;
 641         }
 642
 643         if (ntohl(jsb->s_maxlen) < journal->j_maxlen)
 644                 journal->j_maxlen = ntohl(jsb->s_maxlen);
 645         else if (ntohl(jsb->s_maxlen) > journal->j_maxlen) {
 646                 com_err(ctx->program_name, EXT2_ET_CORRUPT_SUPERBLOCK,
 647                         _("%s: journal too short\n"),
 648                         ctx->device_name);
 649                 return EXT2_ET_CORRUPT_SUPERBLOCK;
 650         }
 651
 652         journal->j_tail_sequence = ntohl(jsb->s_sequence);
 653         journal->j_transaction_sequence = journal->j_tail_sequence;
 654         journal->j_tail = ntohl(jsb->s_start);
 655         journal->j_first = ntohl(jsb->s_first);
 656         journal->j_last = ntohl(jsb->s_maxlen);
 657
 658         return 0;
 659 }
 660
 661 static void e2fsck_journal_reset_super(e2fsck_t ctx, journal_superblock_t *jsb,
 662                                        journal_t *journal)
 663 {
 664         char *p;
 665         union {
 666                 uuid_t uuid;
 667                 __u32 val[4];
 668         } u;
 669         __u32 new_seq = 0;
 670         int i;
 671
 672         /* Leave a valid existing V1 superblock signature alone.
 673          * Anything unrecognisable we overwrite with a new V2
 674          * signature. */
 675
 676         if (jsb->s_header.h_magic != htonl(JFS_MAGIC_NUMBER) ||
 677             jsb->s_header.h_blocktype != htonl(JFS_SUPERBLOCK_V1)) {
 678                 jsb->s_header.h_magic = htonl(JFS_MAGIC_NUMBER);
 679                 jsb->s_header.h_blocktype = htonl(JFS_SUPERBLOCK_V2);
 680         }
 681
 682         /* Zero out everything else beyond the superblock header */
 683
 684         p = ((char *) jsb) + sizeof(journal_header_t);
 685         memset (p, 0, ctx->fs->blocksize-sizeof(journal_header_t));
 686
 687         jsb->s_blocksize = htonl(ctx->fs->blocksize);
 688         jsb->s_maxlen = htonl(journal->j_maxlen);
 689         jsb->s_first = htonl(1);
 690
 691         /* Initialize the journal sequence number so that there is "no"
 692          * chance we will find old "valid" transactions in the journal.
 693          * This avoids the need to zero the whole journal (slow to do,
 694          * and risky when we are just recovering the filesystem).
 695          */
 696         uuid_generate(u.uuid);
 697         for (i = 0; i < 4; i ++)
 698                 new_seq ^= u.val[i];
 699         jsb->s_sequence = htonl(new_seq);
 700         e2fsck_journal_sb_csum_set(journal, jsb);
 701
 702         mark_buffer_dirty(journal->j_sb_buffer);
 703         ll_rw_block(WRITE, 1, &journal->j_sb_buffer);
 704 }
 705
 706 static errcode_t e2fsck_journal_fix_corrupt_super(e2fsck_t ctx,
 707                                                   journal_t *journal,
 708                                                   struct problem_context *pctx)
 709 {
 710         struct ext2_super_block *sb = ctx->fs->super;
 711         int recover = ctx->fs->super->s_feature_incompat &
 712                 EXT3_FEATURE_INCOMPAT_RECOVER;
 713
 714         if (sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) {
 715                 if (fix_problem(ctx, PR_0_JOURNAL_BAD_SUPER, pctx)) {
 716                         e2fsck_journal_reset_super(ctx, journal->j_superblock,
 717                                                    journal);
 718                         journal->j_transaction_sequence = 1;
 719                         e2fsck_clear_recover(ctx, recover);
 720                         return 0;
 721                 }
 722                 return EXT2_ET_CORRUPT_SUPERBLOCK;
 723         } else if (e2fsck_journal_fix_bad_inode(ctx, pctx))
 724                 return EXT2_ET_CORRUPT_SUPERBLOCK;
 725
 726         return 0;
 727 }
 728
 729 static void e2fsck_journal_release(e2fsck_t ctx, journal_t *journal,
 730                                    int reset, int drop)
 731 {
 732         journal_superblock_t *jsb;
 733
 734         if (drop)
 735                 mark_buffer_clean(journal->j_sb_buffer);
 736         else if (!(ctx->options & E2F_OPT_READONLY)) {
 737                 jsb = journal->j_superblock;
 738                 jsb->s_sequence = htonl(journal->j_transaction_sequence);
 739                 if (reset)
 740                         jsb->s_start = 0; /* this marks the journal as empty */
 741                 e2fsck_journal_sb_csum_set(journal, jsb);
 742                 mark_buffer_dirty(journal->j_sb_buffer);
 743         }
 744         brelse(journal->j_sb_buffer);
 745
 746         if (ctx->journal_io) {
 747                 if (ctx->fs && ctx->fs->io != ctx->journal_io)
 748                         io_channel_close(ctx->journal_io);
 749                 ctx->journal_io = 0;
 750         }
 751
 752 #ifndef USE_INODE_IO
 753         if (journal->j_inode)
 754                 ext2fs_free_mem(&journal->j_inode);
 755 #endif
 756         if (journal->j_fs_dev)
 757                 ext2fs_free_mem(&journal->j_fs_dev);
 758         ext2fs_free_mem(&journal);
 759 }
 760
 761 /*
 762  * This function makes sure that the superblock fields regarding the
 763  * journal are consistent.
 764  */
 765 int e2fsck_check_ext3_journal(e2fsck_t ctx)
 766 {
 767         struct ext2_super_block *sb = ctx->fs->super;
 768         journal_t *journal;
 769         int recover = ctx->fs->super->s_feature_incompat &
 770                 EXT3_FEATURE_INCOMPAT_RECOVER;
 771         struct problem_context pctx;
 772         problem_t problem;
 773         int reset = 0, force_fsck = 0;
 774         int retval;
 775
 776         /* If we don't have any journal features, don't do anything more */
 777         if (!(sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) &&
 778             !recover && sb->s_journal_inum == 0 && sb->s_journal_dev == 0 &&
 779             uuid_is_null(sb->s_journal_uuid))
 780                 return 0;
 781
 782         clear_problem_context(&pctx);
 783         pctx.num = sb->s_journal_inum;
 784
 785         retval = e2fsck_get_journal(ctx, &journal);
 786         if (retval) {
 787                 if ((retval == EXT2_ET_BAD_INODE_NUM) ||
 788                     (retval == EXT2_ET_BAD_BLOCK_NUM) ||
 789                     (retval == EXT2_ET_JOURNAL_TOO_SMALL) ||
 790                     (retval == EXT2_ET_NO_JOURNAL))
 791                         return e2fsck_journal_fix_bad_inode(ctx, &pctx);
 792                 return retval;
 793         }
 794
 795         retval = e2fsck_journal_load(journal);
 796         if (retval) {
 797                 if ((retval == EXT2_ET_CORRUPT_SUPERBLOCK) ||
 798                     ((retval == EXT2_ET_UNSUPP_FEATURE) &&
 799                     (!fix_problem(ctx, PR_0_JOURNAL_UNSUPP_INCOMPAT,
 800                                   &pctx))) ||
 801                     ((retval == EXT2_ET_RO_UNSUPP_FEATURE) &&
 802                     (!fix_problem(ctx, PR_0_JOURNAL_UNSUPP_ROCOMPAT,
 803                                   &pctx))) ||
 804                     ((retval == EXT2_ET_JOURNAL_UNSUPP_VERSION) &&
 805                     (!fix_problem(ctx, PR_0_JOURNAL_UNSUPP_VERSION, &pctx))))
 806                         retval = e2fsck_journal_fix_corrupt_super(ctx, journal,
 807                                                                   &pctx);
 808                 e2fsck_journal_release(ctx, journal, 0, 1);
 809                 return retval;
 810         }
 811
 812         /*
 813          * We want to make the flags consistent here.  We will not leave with
 814          * needs_recovery set but has_journal clear.  We can't get in a loop
 815          * with -y, -n, or -p, only if a user isn't making up their mind.
 816          */
 817 no_has_journal:
 818         if (!(sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
 819                 recover = sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER;
 820                 pctx.str = "inode";
 821                 if (fix_problem(ctx, PR_0_JOURNAL_HAS_JOURNAL, &pctx)) {
 822                         if (recover &&
 823                             !fix_problem(ctx, PR_0_JOURNAL_RECOVER_SET, &pctx))
 824                                 goto no_has_journal;
 825                         /*
 826                          * Need a full fsck if we are releasing a
 827                          * journal stored on a reserved inode.
 828                          */
 829                         force_fsck = recover ||
 830                                 (sb->s_journal_inum < EXT2_FIRST_INODE(sb));
 831                         /* Clear all of the journal fields */
 832                         sb->s_journal_inum = 0;
 833                         sb->s_journal_dev = 0;
 834                         memset(sb->s_journal_uuid, 0,
 835                                sizeof(sb->s_journal_uuid));
 836                         e2fsck_clear_recover(ctx, force_fsck);
 837                 } else if (!(ctx->options & E2F_OPT_READONLY)) {
 838                         sb->s_feature_compat |= EXT3_FEATURE_COMPAT_HAS_JOURNAL;
 839                         ctx->fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
 840                         ext2fs_mark_super_dirty(ctx->fs);
 841                 }
 842         }
 843
 844         if (sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL &&
 845             !(sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER) &&
 846             journal->j_superblock->s_start != 0) {
 847                 /* Print status information */
 848                 fix_problem(ctx, PR_0_JOURNAL_RECOVERY_CLEAR, &pctx);
 849                 if (ctx->superblock)
 850                         problem = PR_0_JOURNAL_RUN_DEFAULT;
 851                 else
 852                         problem = PR_0_JOURNAL_RUN;
 853                 if (fix_problem(ctx, problem, &pctx)) {
 854                         ctx->options |= E2F_OPT_FORCE;
 855                         sb->s_feature_incompat |=
 856                                 EXT3_FEATURE_INCOMPAT_RECOVER;
 857                         ext2fs_mark_super_dirty(ctx->fs);
 858                 } else if (fix_problem(ctx,
 859                                        PR_0_JOURNAL_RESET_JOURNAL, &pctx)) {
 860                         reset = 1;
 861                         sb->s_state &= ~EXT2_VALID_FS;
 862                         ext2fs_mark_super_dirty(ctx->fs);
 863                 }
 864                 /*
 865                  * If the user answers no to the above question, we
 866                  * ignore the fact that journal apparently has data;
 867                  * accidentally replaying over valid data would be far
 868                  * worse than skipping a questionable recovery.
 869                  *
 870                  * XXX should we abort with a fatal error here?  What
 871                  * will the ext3 kernel code do if a filesystem with
 872                  * !NEEDS_RECOVERY but with a non-zero
 873                  * journal->j_superblock->s_start is mounted?
 874                  */
 875         }
 876
 877         /*
 878          * If we don't need to do replay the journal, check to see if
 879          * the journal's errno is set; if so, we need to mark the file
 880          * system as being corrupt and clear the journal's s_errno.
 881          */
 882         if (!(sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER) &&
 883             journal->j_superblock->s_errno) {
 884                 ctx->fs->super->s_state |= EXT2_ERROR_FS;
 885                 ext2fs_mark_super_dirty(ctx->fs);
 886                 journal->j_superblock->s_errno = 0;
 887                 e2fsck_journal_sb_csum_set(journal, journal->j_superblock);
 888                 mark_buffer_dirty(journal->j_sb_buffer);
 889         }
 890
 891         e2fsck_journal_release(ctx, journal, reset, 0);
 892         return retval;
 893 }
 894
 895 static errcode_t recover_ext3_journal(e2fsck_t ctx)
 896 {
 897         struct problem_context  pctx;
 898         journal_t *journal;
 899         int retval;
 900
 901         clear_problem_context(&pctx);
 902
 903         journal_init_revoke_caches();
 904         retval = e2fsck_get_journal(ctx, &journal);
 905         if (retval)
 906                 return retval;
 907
 908         retval = e2fsck_journal_load(journal);
 909         if (retval)
 910                 goto errout;
 911
 912         retval = journal_init_revoke(journal, 1024);
 913         if (retval)
 914                 goto errout;
 915
 916         retval = -journal_recover(journal);
 917         if (retval)
 918                 goto errout;
 919
 920         if (journal->j_failed_commit) {
 921                 pctx.ino = journal->j_failed_commit;
 922                 fix_problem(ctx, PR_0_JNL_TXN_CORRUPT, &pctx);
 923                 journal->j_superblock->s_errno = -EINVAL;
 924                 mark_buffer_dirty(journal->j_sb_buffer);
 925         }
 926
 927 errout:
 928         journal_destroy_revoke(journal);
 929         journal_destroy_revoke_caches();
 930         e2fsck_journal_release(ctx, journal, 1, 0);
 931         return retval;
 932 }
 933
 934 int e2fsck_run_ext3_journal(e2fsck_t ctx)
 935 {
 936         io_manager io_ptr = ctx->fs->io->manager;
 937         int blocksize = ctx->fs->blocksize;
 938         errcode_t       retval, recover_retval;
 939         io_stats        stats = 0;
 940         unsigned long long kbytes_written = 0;
 941
 942         printf(_("%s: recovering journal\n"), ctx->device_name);
 943         if (ctx->options & E2F_OPT_READONLY) {
 944                 printf(_("%s: won't do journal recovery while read-only\n"),
 945                        ctx->device_name);
 946                 return EXT2_ET_FILE_RO;
 947         }
 948
 949         if (ctx->fs->flags & EXT2_FLAG_DIRTY)
 950                 ext2fs_flush(ctx->fs);  /* Force out any modifications */
 951
 952         recover_retval = recover_ext3_journal(ctx);
 953
 954         /*
 955          * Reload the filesystem context to get up-to-date data from disk
 956          * because journal recovery will change the filesystem under us.
 957          */
 958         if (ctx->fs->super->s_kbytes_written &&
 959             ctx->fs->io->manager->get_stats)
 960                 ctx->fs->io->manager->get_stats(ctx->fs->io, &stats);
 961         if (stats && stats->bytes_written)
 962                 kbytes_written = stats->bytes_written >> 10;
 963
 964         ext2fs_mmp_stop(ctx->fs);
 965         ext2fs_free(ctx->fs);
 966         retval = ext2fs_open(ctx->filesystem_name, EXT2_FLAG_RW,
 967                              ctx->superblock, blocksize, io_ptr,
 968                              &ctx->fs);
 969         if (retval) {
 970                 com_err(ctx->program_name, retval,
 971                         _("while trying to re-open %s"),
 972                         ctx->device_name);
 973                 fatal_error(ctx, 0);
 974         }
 975         ctx->fs->priv_data = ctx;
 976         ctx->fs->now = ctx->now;
 977         ctx->fs->flags |= EXT2_FLAG_MASTER_SB_ONLY;
 978         ctx->fs->super->s_kbytes_written += kbytes_written;
 979
 980         /* Set the superblock flags */
 981         e2fsck_clear_recover(ctx, recover_retval);
 982
 983         /*
 984          * Do one last sanity check, and propagate journal->s_errno to
 985          * the EXT2_ERROR_FS flag in the fs superblock if needed.
 986          */
 987         retval = e2fsck_check_ext3_journal(ctx);
 988         return retval ? retval : recover_retval;
 989 }
 990
 991 /*
 992  * This function will move the journal inode from a visible file in
 993  * the filesystem directory hierarchy to the reserved inode if necessary.
 994  */
 995 static const char * const journal_names[] = {
 996         ".journal", "journal", ".journal.dat", "journal.dat", 0 };
 997
 998 void e2fsck_move_ext3_journal(e2fsck_t ctx)
 999 {
1000         struct ext2_super_block *sb = ctx->fs->super;
1001         struct problem_context  pctx;
1002         struct ext2_inode       inode;
1003         ext2_filsys             fs = ctx->fs;
1004         ext2_ino_t              ino;
1005         errcode_t               retval;
1006         const char * const *    cpp;
1007         int                     group, mount_flags;
1008
1009         clear_problem_context(&pctx);
1010
1011         /*
1012          * If the filesystem is opened read-only, or there is no
1013          * journal, then do nothing.
1014          */
1015         if ((ctx->options & E2F_OPT_READONLY) ||
1016             (sb->s_journal_inum == 0) ||
1017             !(sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL))
1018                 return;
1019
1020         /*
1021          * Read in the journal inode
1022          */
1023         if (ext2fs_read_inode(fs, sb->s_journal_inum, &inode) != 0)
1024                 return;
1025
1026         /*
1027          * If it's necessary to backup the journal inode, do so.
1028          */
1029         if ((sb->s_jnl_backup_type == 0) ||
1030             ((sb->s_jnl_backup_type == EXT3_JNL_BACKUP_BLOCKS) &&
1031              memcmp(inode.i_block, sb->s_jnl_blocks, EXT2_N_BLOCKS*4))) {
1032                 if (fix_problem(ctx, PR_0_BACKUP_JNL, &pctx)) {
1033                         memcpy(sb->s_jnl_blocks, inode.i_block,
1034                                EXT2_N_BLOCKS*4);
1035                         sb->s_jnl_blocks[15] = inode.i_size_high;
1036                         sb->s_jnl_blocks[16] = inode.i_size;
1037                         sb->s_jnl_backup_type = EXT3_JNL_BACKUP_BLOCKS;
1038                         ext2fs_mark_super_dirty(fs);
1039                         fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
1040                 }
1041         }
1042
1043         /*
1044          * If the journal is already the hidden inode, then do nothing
1045          */
1046         if (sb->s_journal_inum == EXT2_JOURNAL_INO)
1047                 return;
1048
1049         /*
1050          * The journal inode had better have only one link and not be readable.
1051          */
1052         if (inode.i_links_count != 1)
1053                 return;
1054
1055         /*
1056          * If the filesystem is mounted, or we can't tell whether
1057          * or not it's mounted, do nothing.
1058          */
1059         retval = ext2fs_check_if_mounted(ctx->filesystem_name, &mount_flags);
1060         if (retval || (mount_flags & EXT2_MF_MOUNTED))
1061                 return;
1062
1063         /*
1064          * If we can't find the name of the journal inode, then do
1065          * nothing.
1066          */
1067         for (cpp = journal_names; *cpp; cpp++) {
1068                 retval = ext2fs_lookup(fs, EXT2_ROOT_INO, *cpp,
1069                                        strlen(*cpp), 0, &ino);
1070                 if ((retval == 0) && (ino == sb->s_journal_inum))
1071                         break;
1072         }
1073         if (*cpp == 0)
1074                 return;
1075
1076         /* We need the inode bitmap to be loaded */
1077         retval = ext2fs_read_bitmaps(fs);
1078         if (retval)
1079                 return;
1080
1081         pctx.str = *cpp;
1082         if (!fix_problem(ctx, PR_0_MOVE_JOURNAL, &pctx))
1083                 return;
1084
1085         /*
1086          * OK, we've done all the checks, let's actually move the
1087          * journal inode.  Errors at this point mean we need to force
1088          * an ext2 filesystem check.
1089          */
1090         if ((retval = ext2fs_unlink(fs, EXT2_ROOT_INO, *cpp, ino, 0)) != 0)
1091                 goto err_out;
1092         if ((retval = ext2fs_write_inode(fs, EXT2_JOURNAL_INO, &inode)) != 0)
1093                 goto err_out;
1094         sb->s_journal_inum = EXT2_JOURNAL_INO;
1095         ext2fs_mark_super_dirty(fs);
1096         fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
1097         inode.i_links_count = 0;
1098         inode.i_dtime = ctx->now;
1099         if ((retval = ext2fs_write_inode(fs, ino, &inode)) != 0)
1100                 goto err_out;
1101
1102         group = ext2fs_group_of_ino(fs, ino);
1103         ext2fs_unmark_inode_bitmap2(fs->inode_map, ino);
1104         ext2fs_mark_ib_dirty(fs);
1105         ext2fs_bg_free_inodes_count_set(fs, group, ext2fs_bg_free_inodes_count(fs, group) + 1);
1106         ext2fs_group_desc_csum_set(fs, group);
1107         fs->super->s_free_inodes_count++;
1108         return;
1109
1110 err_out:
1111         pctx.errcode = retval;
1112         fix_problem(ctx, PR_0_ERR_MOVE_JOURNAL, &pctx);
1113         fs->super->s_state &= ~EXT2_VALID_FS;
1114         ext2fs_mark_super_dirty(fs);
1115         return;
1116 }
1117
1118 /*
1119  * This function makes sure the superblock hint for the external
1120  * journal is correct.
1121  */
1122 int e2fsck_fix_ext3_journal_hint(e2fsck_t ctx)
1123 {
1124         struct ext2_super_block *sb = ctx->fs->super;
1125         struct problem_context pctx;
1126         char uuid[37], *journal_name;
1127         struct stat st;
1128
1129         if (!(sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) ||
1130             uuid_is_null(sb->s_journal_uuid))
1131                 return 0;
1132
1133         uuid_unparse(sb->s_journal_uuid, uuid);
1134         journal_name = blkid_get_devname(ctx->blkid, "UUID", uuid);
1135         if (!journal_name)
1136                 return 0;
1137
1138         if (stat(journal_name, &st) < 0)
1139                 return 0;
1140
1141         if (st.st_rdev != sb->s_journal_dev) {
1142                 clear_problem_context(&pctx);
1143                 pctx.num = st.st_rdev;
1144                 if (fix_problem(ctx, PR_0_EXTERNAL_JOURNAL_HINT, &pctx)) {
1145                         sb->s_journal_dev = st.st_rdev;
1146                         ext2fs_mark_super_dirty(ctx->fs);
1147                 }
1148         }
1149
1150         free(journal_name);
1151         return 0;
1152 }