static errcode_t recover_ext3_journal(e2fsck_t ctx)
{
journal_t *journal;
int retval;
journal_init_revoke_caches();
retval = e2fsck_get_journal(ctx, &journal);
if (retval)
return retval;
retval = e2fsck_journal_load(journal);
if (retval)
goto errout;
retval = journal_init_revoke(journal, 1024);
if (retval)
goto errout;
retval = -journal_recover(journal);
if (retval)
goto errout;
if (journal->j_superblock->s_errno) {
ctx->fs->super->s_state |= EXT2_ERROR_FS;
ext2fs_mark_super_dirty(ctx->fs);
journal->j_superblock->s_errno = 0;
mark_buffer_dirty(journal->j_sb_buffer);
}
errout:
journal_destroy_revoke(journal);
journal_destroy_revoke_caches();
e2fsck_journal_release(ctx, journal, 1, 0);
return retval;
}
static errcode_t recover_ext3_journal(e2fsck_t ctx)
{
struct problem_context pctx;
journal_t *journal;
int retval;
clear_problem_context(&pctx);
journal_init_revoke_caches();
retval = e2fsck_get_journal(ctx, &journal);
if (retval)
return retval;
retval = e2fsck_journal_load(journal);
if (retval)
goto errout;
retval = journal_init_revoke(journal, 1024);
if (retval)
goto errout;
retval = -journal_recover(journal);
if (retval)
goto errout;
if (journal->j_failed_commit) {
pctx.ino = journal->j_failed_commit;
fix_problem(ctx, PR_0_JNL_TXN_CORRUPT, &pctx);
journal->j_superblock->s_errno = -EINVAL;
mark_buffer_dirty(journal->j_sb_buffer);
}
errout:
journal_destroy_revoke(journal);
journal_destroy_revoke_caches();
e2fsck_journal_release(ctx, journal, 1, 0);
return retval;
}
/*
* This function makes sure that the superblock fields regarding the
* journal are consistent.
*/
int e2fsck_check_ext3_journal(e2fsck_t ctx)
{
struct ext2_super_block *sb = ctx->fs->super;
journal_t *journal;
int recover = ctx->fs->super->s_feature_incompat &
EXT3_FEATURE_INCOMPAT_RECOVER;
struct problem_context pctx;
problem_t problem;
int reset = 0, force_fsck = 0;
int retval;
/* If we don't have any journal features, don't do anything more */
if (!(sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) &&
!recover && sb->s_journal_inum == 0 && sb->s_journal_dev == 0 &&
uuid_is_null(sb->s_journal_uuid))
return 0;
clear_problem_context(&pctx);
pctx.num = sb->s_journal_inum;
retval = e2fsck_get_journal(ctx, &journal);
if (retval) {
if ((retval == EXT2_ET_BAD_INODE_NUM) ||
(retval == EXT2_ET_BAD_BLOCK_NUM) ||
(retval == EXT2_ET_JOURNAL_TOO_SMALL) ||
(retval == EXT2_ET_NO_JOURNAL))
return e2fsck_journal_fix_bad_inode(ctx, &pctx);
return retval;
}
retval = e2fsck_journal_load(journal);
if (retval) {
if ((retval == EXT2_ET_CORRUPT_SUPERBLOCK) ||
((retval == EXT2_ET_UNSUPP_FEATURE) &&
(!fix_problem(ctx, PR_0_JOURNAL_UNSUPP_INCOMPAT,
&pctx))) ||
((retval == EXT2_ET_RO_UNSUPP_FEATURE) &&
(!fix_problem(ctx, PR_0_JOURNAL_UNSUPP_ROCOMPAT,
&pctx))) ||
((retval == EXT2_ET_JOURNAL_UNSUPP_VERSION) &&
(!fix_problem(ctx, PR_0_JOURNAL_UNSUPP_VERSION, &pctx))))
retval = e2fsck_journal_fix_corrupt_super(ctx, journal,
&pctx);
e2fsck_journal_release(ctx, journal, 0, 1);
return retval;
}
/*
* We want to make the flags consistent here. We will not leave with
* needs_recovery set but has_journal clear. We can't get in a loop
* with -y, -n, or -p, only if a user isn't making up their mind.
*/
no_has_journal:
if (!(sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
recover = sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER;
pctx.str = "inode";
if (fix_problem(ctx, PR_0_JOURNAL_HAS_JOURNAL, &pctx)) {
if (recover &&
!fix_problem(ctx, PR_0_JOURNAL_RECOVER_SET, &pctx))
goto no_has_journal;
/*
* Need a full fsck if we are releasing a
* journal stored on a reserved inode.
*/
force_fsck = recover ||
(sb->s_journal_inum < EXT2_FIRST_INODE(sb));
/* Clear all of the journal fields */
sb->s_journal_inum = 0;
sb->s_journal_dev = 0;
memset(sb->s_journal_uuid, 0,
sizeof(sb->s_journal_uuid));
e2fsck_clear_recover(ctx, force_fsck);
} else if (!(ctx->options & E2F_OPT_READONLY)) {
sb->s_feature_compat |= EXT3_FEATURE_COMPAT_HAS_JOURNAL;
ext2fs_mark_super_dirty(ctx->fs);
}
}
if (sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL &&
!(sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER) &&
journal->j_superblock->s_start != 0) {
/* Print status information */
fix_problem(ctx, PR_0_JOURNAL_RECOVERY_CLEAR, &pctx);
if (ctx->superblock)
problem = PR_0_JOURNAL_RUN_DEFAULT;
else
problem = PR_0_JOURNAL_RUN;
if (fix_problem(ctx, problem, &pctx)) {
ctx->options |= E2F_OPT_FORCE;
sb->s_feature_incompat |=
EXT3_FEATURE_INCOMPAT_RECOVER;
ext2fs_mark_super_dirty(ctx->fs);
} else if (fix_problem(ctx,
PR_0_JOURNAL_RESET_JOURNAL, &pctx)) {
reset = 1;
sb->s_state &= ~EXT2_VALID_FS;
ext2fs_mark_super_dirty(ctx->fs);
}
/*
* If the user answers no to the above question, we
* ignore the fact that journal apparently has data;
* accidentally replaying over valid data would be far
* worse than skipping a questionable recovery.
*
* XXX should we abort with a fatal error here? What
* will the ext3 kernel code do if a filesystem with
* !NEEDS_RECOVERY but with a non-zero
* journal->j_superblock->s_start is mounted?
*/
}
e2fsck_journal_release(ctx, journal, reset, 0);
return retval;
}
