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tune2fs/fuse2fs/debugfs: after replaying the journal, fix up s_lastcheck

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If the file system needs to have the journal replayed, but definition
it can't be freshly checked.  So if the time when the file system was
last checked (s_lastcheck) is before the time it was last mounted
(s_mtime), force s_lastcheck to be before s_mtime.

This is necessary to make sure some of tune2fs's safety checks work
correctly after replaying the journal, since some of tune2fs's
operations really require that the file system be self-consistent or
grave damage can result.

Signed-off-by: Theodore Ts'o <tytso@mit.edu>
This commit is contained in:
Theodore Ts'o 2018-02-24 18:11:19 -05:00
parent f5eb38e816
commit 60f032bbc1
1 changed files with 6 additions and 0 deletions
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6
debugfs/journal.c
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@ -250,6 +250,12 @@ static void ext2fs_clear_recover(ext2_filsys fs, int error)
/* if we had an error doing journal recovery, we need a full fsck */
if (error)
fs->super->s_state &= ~EXT2_VALID_FS;
/*
* If we replayed the journal by definition the file system
* was mounted since the last time it was checked
*/
if (fs->super->s_lastcheck >= fs->super->s_mtime)
fs->super->s_lastcheck = fs->super->s_mtime - 1;
ext2fs_mark_super_dirty(fs);
}