On Fri, Jun 14, 2013 at 02:51:35PM -0700, Junio C Hamano wrote:
> > Here is a re-roll; the first patch is a small cleanup in t5303 that is
> > required for the new tests to work.
>
> Heh, I was doing the same, but I cheated ;-)
>
> diff --git a/t/t5303-pack-corruption-resilience.sh
> b/t/t5303-pack-corruption-resilience.sh
> index 5b1250f..57436db 100755
> --- a/t/t5303-pack-corruption-resilience.sh
> +++ b/t/t5303-pack-corruption-resilience.sh
> @@ -51,7 +51,7 @@ do_corrupt_object() {
> ofs=`git show-index < ${pack}.idx | grep $1 | cut -f1 -d" "` &&
> ofs=$(($ofs + $2)) &&
> chmod +w ${pack}.pack &&
> - dd of=${pack}.pack count=1 bs=1 conv=notrunc seek=$ofs &&
> + dd of=${pack}.pack count=${3-1} bs=1 conv=notrunc seek=$ofs &&
> test_must_fail git verify-pack ${pack}.pack
Yeah, I almost did that, but then I realized that dd will simply read
all of its input, anyway.
> test_expect_success \
> + 'corrupt delta-part of a packed object, fall back to loose' \
> + 'create_new_pack &&
> + path=$(echo "$blob_3" | sed -e "s|^\(..\)|\1/|") &&
> + cat ".git/objects/$path" >saved &&
> + git prune-packed &&
> +
> + dd if=${pack}.idx bs=1 count=20 skip=1032 >blob1-bin &&
> + dd if=${pack}.pack bs=1 count=20 skip=2233 >blob3-delta-base-bin &&
> +
> + # At the beginning of the REF_DELTA representation of $blob_3,
> + # write 20-byte base object name for $blob_1, instead of $blob_2.
> + # The binary representation of object name for $blob_1 is found
> + # at offset 4 + 4 + 256*4 = 1032 for 20 bytes.
> + dd if=${pack}.idx bs=1 count=20 skip=1032 | do_corrupt_object $blob_3 2
> 20 &&
> + test_must_fail git cat-file blob $blob_3 >/dev/null &&
I didn't want to bother coming up with the binary version of the
REF_DELTA sha1, so I used OFS_DELTA. :)
-Peff
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