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kheaders: explicitly define file modes for archived headers
commit 3bd27a847a
upstream.
Build environments might be running with different umask settings
resulting in indeterministic file modes for the files contained in
kheaders.tar.xz. The file itself is served with 444, i.e. world
readable. Archive the files explicitly with 744,a+X to improve
reproducibility across build environments.
--mode=0444 is not suitable as directories need to be executable. Also,
444 makes it hard to delete all the readonly files after extraction.
Cc: stable@vger.kernel.org
Signed-off-by: Matthias Maennich <maennich@google.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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1 changed files with 1 additions and 1 deletions
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@ -89,7 +89,7 @@ find $cpio_dir -type f -print0 |
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# Create archive and try to normalize metadata for reproducibility.
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# Create archive and try to normalize metadata for reproducibility.
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tar "${KBUILD_BUILD_TIMESTAMP:+--mtime=$KBUILD_BUILD_TIMESTAMP}" \
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tar "${KBUILD_BUILD_TIMESTAMP:+--mtime=$KBUILD_BUILD_TIMESTAMP}" \
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--owner=0 --group=0 --sort=name --numeric-owner \
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--owner=0 --group=0 --sort=name --numeric-owner --mode=u=rw,go=r,a+X \
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-I $XZ -cf $tarfile -C $cpio_dir/ . > /dev/null
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-I $XZ -cf $tarfile -C $cpio_dir/ . > /dev/null
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echo $headers_md5 > kernel/kheaders.md5
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echo $headers_md5 > kernel/kheaders.md5
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