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download/git: fix transform regexp for older tar versions

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Older versions of tar (e.g. 1.27.1) incorrectly interpret the escaping
of the regexp separator, and generate broken tarballs.

For example, given the following transform expression:
    --transform="s/^\.\//squashfs-e38956b92f738518c29734399629e7cdb33072d3\//"

the resulting paths in the generated tarball would be:
    squashfs-e38956b92f738518c29734399629e7cdb33072d3\/

i.e. a directory which last character is indeed a '\'.

We fix that by using a separator which is very unlikely to occur in a
filename.

Fixes:
    http://autobuild.buildroot.org/results/742/7427f34e5c9f6d043b0fe6ad2c66cc0f31d2b24f/

and probably a slew of others as well...

Take this opportunity to fix indentation on the following line
(leading spaces, not TABs).

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: Ricardo Martincoski <ricardo.martincoski@gmail.com>
Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Cc: Maxime Hadjinlian <maxime.hadjinlian@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
This commit is contained in:
Yann E. MORIN 2018-04-20 09:36:32 +02:00 committed by Thomas Petazzoni
parent f7c8cd89c9
commit 6e2f5d0254
1 changed files with 2 additions and 2 deletions
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support/download/git
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@ -121,8 +121,8 @@ LC_ALL=C sort <"${output}.list" >"${output}.list.sorted"
# Create GNU-format tarballs, since that's the format of the tarballs on
# sources.buildroot.org and used in the *.hash files
tar cf - --transform="s/^\.\//${basename}\//" \
--numeric-owner --owner=0 --group=0 --mtime="${date}" --format=gnu \
tar cf - --transform="s#^\./#${basename}/#" \
--numeric-owner --owner=0 --group=0 --mtime="${date}" --format=gnu \
-T "${output}.list.sorted" >"${output}.tar"
gzip -6 -n <"${output}.tar" >"${output}"