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Date: Tue, 23 Feb 2010 00:43:41 -0500 From: Theodore Ts'o <tytso@....edu> To: Ext4 Developers List <linux-ext4@...r.kernel.org> Cc: Theodore Ts'o <tytso@....edu> Subject: [PATCH] e2fsck: Fix bug which can cause e2fsck -fD to corrupt non-indexed directories E2fsprogs 1.41.10 introduced a regression (in commit b71e018) where e2fsck -fD can corrupt non-indexed directories when are exists one or more file names which alphabetically sort before ".". This can happen with ext2 filesystems or for small directories (take less than a block) which contain filenames that begin with a space or some other punctuation mark. Fix this by making sure we never reorder the '.' or '..' entry in the directory, since they must be first. Signed-off-by: "Theodore Ts'o" <tytso@....edu> --- e2fsck/rehash.c | 7 ++++++- 1 files changed, 6 insertions(+), 1 deletions(-) diff --git a/e2fsck/rehash.c b/e2fsck/rehash.c index 780742e..ceb8543 100644 --- a/e2fsck/rehash.c +++ b/e2fsck/rehash.c @@ -763,7 +763,12 @@ retry_nohash: /* Sort the list */ resort: - qsort(fd.harray, fd.num_array, sizeof(struct hash_entry), hash_cmp); + if (fd.compress) + qsort(fd.harray+2, fd.num_array-2, sizeof(struct hash_entry), + hash_cmp); + else + qsort(fd.harray, fd.num_array, sizeof(struct hash_entry), + hash_cmp); /* * Look for duplicates -- 1.6.6.1.1.g974db.dirty -- 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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