290 lines
9.3 KiB
Bash
Executable file
290 lines
9.3 KiB
Bash
Executable file
#! /bin/sh
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# Copyright (C) 2008, 2009, 2010, 2011 Alexandre Oliva <lxoliva@fsfla.org>
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
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# USA
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# deblob-main - prepare a linux-libre tarball out of a non-libre Linux
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# tarball. It expects the Linux release (mver, say 3.0) as the first
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# argument, the libre sub-release (extra) as the second optional
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# argument, and the patch release (sver, say .13) as an optional third
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# argument. mver and sver are pasted together to form kver.
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# linux-$kver.tar.bz2 and deblob-$mver must exist in the current
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# directory, and the line that sets kver and extra in deblob-$mver
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# must match mver and extra.
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# The resulting tarball is put in linux-$kver-libre$extra.tar.bz2, and
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# an uncompressed xdelta that produces linux-$kver-libre$extra.tar out
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# of linux-$kver.tar is created as linux-$kver-libre$extra.xdelta.
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# This xdelta can be distributed to enable third parties to easily
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# reconstruct the binary tarball starting out of sources downloaded
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# from kernel.org, but without distributing non-Free Software
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# yourself, because xdelta (unlike patches) is not reversible: the
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# removed bits are not present in it at all.
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# xdelta version 3 uses different command line syntax, and it switched
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# to the more standardized but less efficient vcdiff file format.
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# This script will also produce a vcdiff file if xdelta3 is present,
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# and it expects the xdelta program to use the version 1 syntax.
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# To enable you to check the differences between the tarballs, a patch
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# file is generated in linux-$kver-libre$extra.patch. This patch file
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# contains the non-Free blobs, even though in reversed form, so its
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# distribution is discouraged.
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# The tar files and binary deltas are finally compressed with bzip2,
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# and optionally with lzip and xz too, if the compressors are
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# available.
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# At the end, the script attempts to generate a digital signature for
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# the newly-created tarball. This is the last thing the script does,
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# so interrupting it at that point to skip the signing won't fail to
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# do anything else.
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# It is safe to interrupt the script at any other point. When it gets
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# a ^C (other than during signing), it starts cleaning up all of its
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# temporary and output files. If you insist, it may leave junk
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# behind, and then it will refuse to run again before you clean it up
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# by hand. It takes extra care to avoid overwriting useful files.
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# If deblob-$mver finds any unexpected situation, it will error out,
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# and then deblob-main will quit. Pass --force to deblob-main, before
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# any other argument, for deblob-main to ignore any such situations.
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case $1 in
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--force) force=--force; shift;;
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*) force=;;
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esac
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mver=$1 extra=$2 sver=$3
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kver=$mver$sver libre=libre$extra
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deblob= dir=`echo "$0" | sed 's,[^/]*$,,;s,^$,.,;s,/*$,,'`
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if test ! -f linux-$kver.tar.bz2; then
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echo linux-$kver.tar.bz2 does not exist >&2
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exit 1
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fi
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if test -f deblob-$mver; then
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deblob=deblob-$mver
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elif test -f deblob; then
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deblob=deblob
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elif test -f $dir/deblob-$mver; then
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cp $dir/deblob-$mver deblob
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deblob=deblob
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else
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echo deblob does not exist >&2
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exit 1
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fi
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x1="kver=$mver extra=$extra"
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x2=`grep "^kver=[^ ]* extra=" $deblob`
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if test "$x1" = "$x2"; then
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:
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else
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echo deblob script does not match command-line arguments >&2
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echo expected: $x1 >&2
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echo found : $x2 >&2
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exit 1
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fi
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cleanup=
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for f in \
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linux-$kver-$libre.tar.bz2 \
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linux-$kver-$libre.tar.bz2.asc \
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linux-$kver-$libre.tar.bz2.sign \
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linux-$kver-$libre.tar.xz \
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linux-$kver-$libre.tar.xz.asc \
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linux-$kver-$libre.tar.xz.sign \
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linux-$kver-$libre.tar.lz \
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linux-$kver-$libre.tar.lz.asc \
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linux-$kver-$libre.tar.lz.sign \
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linux-$kver.tar \
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linux-$kver-$libre.tar \
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linux-$kver-$libre.patch \
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linux-$kver-$libre.log \
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linux-$kver-$libre.vcdiff \
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linux-$kver-$libre.vcdiff.bz2 \
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linux-$kver-$libre.vcdiff.bz2.asc \
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linux-$kver-$libre.vcdiff.bz2.sign \
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linux-$kver-$libre.vcdiff.xz \
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linux-$kver-$libre.vcdiff.xz.asc \
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linux-$kver-$libre.vcdiff.xz.sign \
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linux-$kver-$libre.vcdiff.lz \
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linux-$kver-$libre.vcdiff.lz.asc \
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linux-$kver-$libre.vcdiff.lz.sign \
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linux-$kver-$libre.xdelta \
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linux-$kver-$libre.xdelta.bz2 \
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linux-$kver-$libre.xdelta.bz2.asc \
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linux-$kver-$libre.xdelta.bz2.sign \
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linux-$kver-$libre.xdelta.xz \
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linux-$kver-$libre.xdelta.xz.asc \
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linux-$kver-$libre.xdelta.xz.sign \
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linux-$kver-$libre.xdelta.lz \
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linux-$kver-$libre.xdelta.lz.asc \
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linux-$kver-$libre.xdelta.lz.sign \
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; do
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if test -f $f; then
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echo $f already exists >&2
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exit 1
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fi
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cleanup="$cleanup $f"
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done
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for d in \
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linux-$kver \
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linux-$kver-$libre \
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orig-linux-$kver \
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; do
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if test -d $d; then
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echo $d already exists >&2
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exit 1
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fi
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cleanup="$cleanup $d"
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done
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if test -f $dir/deblob-$kver; then
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if cmp $dir/deblob-$kver $deblob; then
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:
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else
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echo $dir/deblob-$kver and $deblob are different >&2
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exit 1
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fi
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fi
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if test ! -f deblob-check; then
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if test -f $dir/deblob-check; then
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cp $dir/deblob-check deblob-check
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fi
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else
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if test -f $dir/deblob-check; then
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if cmp $dir/deblob-check deblob-check; then
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:
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else
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echo $dir/deblob-check and deblob-check are different >&2
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exit 1
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fi
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fi
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fi
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trap "status=$?; echo cleaning up...; rm -rf $cleanup; (exit $status); exit" 0 1 2 15
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set -e
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echo Uncompressing linux-$kver.tar.bz2 into linux-$kver.tar
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rm -rf linux-$kver linux-$kver.tar
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bunzip2 < linux-$kver.tar.bz2 > linux-$kver.tar
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echo Extracting linux-$kver.tar into linux-$kver
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tar -xf linux-$kver.tar
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rm -rf linux-$kver-$libre linux-$kver-$libre.tar
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echo Copying linux-$kver to linux-$kver-$libre
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cp linux-$kver.tar linux-$kver-$libre.tar
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cp -lR linux-$kver/. linux-$kver-$libre
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rm -f linux-$kver-$libre.log linux-$kver-$libre.log.tmp
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echo Deblobbing within linux-$kver-$libre, saving output to linux-$kver-$libre.log
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# We can't just pipe deblob into tee, for then we fail to detect
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# error conditions. Use file renaming to tell whether we succeeded.
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if (cd linux-$kver-$libre && /bin/sh ../$deblob $force) 2>&1; then
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mv linux-$kver-$libre.log.tmp linux-$kver-$libre.log
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fi | tee linux-$kver-$libre.log.tmp
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if test ! -f linux-$kver-$libre.log; then
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mv linux-$kver-$libre.log.tmp linux-$kver-$libre.log
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echo $deblob failed, aborting >&2
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exit 1
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fi
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rm -f linux-$kver-$libre.patch
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# Do not copy these scripts for now, deblob-check regards itself as a blob.
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# cp -p $0 $deblob deblob-check linux-$kver-$libre
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echo Generating linux-$kver-$libre.patch
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diff -druN linux-$kver linux-$kver-$libre > linux-$kver-$libre.patch || :
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echo Removing removed or modified files from linux-$kver-$libre.tar
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diff -rq linux-$kver linux-$kver-$libre |
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sed -n "
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s,^Only in \\(linux-$kver\\(/.*\\)\\?\\): \\(.*\\),\1/\3,p;
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s,^Files \\(linux-$kver\\)/\\(.*\\) and \\1-$libre/\\2 differ,\\1/\\2,p;
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" |
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xargs tar --delete -f linux-$kver-$libre.tar
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echo Adding modified or added files to linux-$kver-$libre.tar
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rm -rf orig-linux-$kver
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mv linux-$kver orig-linux-$kver
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mv linux-$kver-$libre linux-$kver
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diff -rq orig-linux-$kver linux-$kver |
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sed -n "
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s,^Files orig-\\(linux-$kver/.*\\) and \\1 differ,\\1,p;
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s,^Only in \\(linux-$kver\\(/.*\\)\\?\\): \\(.*\\),\\1/\\3,p;
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" |
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xargs tar --append -f linux-$kver-$libre.tar
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echo Wiping out extracted trees
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rm -rf linux-$kver orig-linux-$kver
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echo Creating vcdiff between linux-$kver.tar and linux-$kver-$libre.tar
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xdelta3 -e -9 -S djw -s linux-$kver.tar linux-$kver-$libre.tar linux-$kver-$libre.vcdiff || : # don't fail if xdelta3 is not present
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echo Creating xdelta between linux-$kver.tar and linux-$kver-$libre.tar
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xdelta delta -0 linux-$kver.tar linux-$kver-$libre.tar linux-$kver-$libre.xdelta || : # xdelta returns nonzero on success
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echo Compressing binary deltas and linux-$kver-$libre.tar
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rm -f linux-$kver.tar
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if test -f linux-$kver-$libre.vcdiff; then
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bzip2 -k9 linux-$kver-$libre.vcdiff
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xz -k9 linux-$kver-$libre.vcdiff || :
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lzip -k9 linux-$kver-$libre.vcdiff || :
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rm -f linux-$kver-$libre.vcdiff
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fi
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if test -f linux-$kver-$libre.xdelta; then
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bzip2 -k9 linux-$kver-$libre.xdelta
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xz -k9 linux-$kver-$libre.xdelta || :
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lzip -k9 linux-$kver-$libre.xdelta || :
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rm -f linux-$kver-$libre.xdelta
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fi
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bzip2 -k9 linux-$kver-$libre.tar
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xz -k9 linux-$kver-$libre.tar || :
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lzip -k9 linux-$kver-$libre.tar || :
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rm -f linux-$kver-$libre.tar
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trap "status=$?; (exit $status); exit" 0 1 2 15
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echo Done except for signing, feel free to interrupt
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for f in \
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linux-$kver-$libre.tar.bz2 \
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linux-$kver-$libre.tar.xz \
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linux-$kver-$libre.tar.lz \
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linux-$kver-$libre.vcdiff.bz2 \
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linux-$kver-$libre.vcdiff.xz \
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linux-$kver-$libre.vcdiff.lz \
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linux-$kver-$libre.xdelta.bz2 \
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linux-$kver-$libre.xdelta.xz \
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linux-$kver-$libre.xdelta.lz \
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; do
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if test -f $f; then
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gpg -a --detach-sign $f
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mv $f.asc $f.sign
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fi
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done
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echo All set, please review linux-$kver-$libre.patch
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exit 0
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