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Date: Sun, 27 Jul 2014 19:48:56 -0400 From: Theodore Ts'o <tytso@....edu> To: "Darrick J. Wong" <darrick.wong@...cle.com> Cc: linux-ext4@...r.kernel.org Subject: Re: [PATCH 17/18] e2fsck: make insert_dirent_tail more robust On Fri, Jul 25, 2014 at 05:35:25PM -0700, Darrick J. Wong wrote: > Fix the routine that adds dirent checksum structures to the directory > block to handle oddball situations a bit more robustly. > > First, when we're walking the entry array, we might encounter an > entry that ends exactly one byte before where the checksum entry needs > to start, i.e. there's space for the tail entry, but it needs to be > reinitialized. When that happens, we should proceed until d points to > that space so that the tail entry can be initialized. > > Second, it's possible that we've been fed a directory block where the > entries end just short of the end of the block. In this case, we need > to adjust the size of the last entry to point exactly to where the > dirent tail starts. The current code requires that entries end > exactly on the block boundary, but this is not always the case with > damaged filesystems. > > Signed-off-by: Darrick J. Wong <darrick.wong@...cle.com> Applied, thanks. - Ted -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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