3 # Copyright (C) 2008, 2009, 2010 Alexandre Oliva <lxoliva@fsfla.org>
5 # This program is free software; you can redistribute it and/or modify
6 # it under the terms of the GNU General Public License as published by
7 # the Free Software Foundation; either version 2 of the License, or
8 # (at your option) any later version.
10 # This program is distributed in the hope that it will be useful, but
11 # WITHOUT ANY WARRANTY; without even the implied warranty of
12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 # General Public License for more details.
15 # You should have received a copy of the GNU General Public License
16 # along with this program; if not, write to the Free Software
17 # Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
20 # deblob.sh - prepare a linux-libre tarball out of a non-libre Linux
21 # tarball. It expects the Linux release (mver, say 2.6.25) as the
22 # first argument, the libre sub-release (extra) as the second optional
23 # argument, and the patch release (sver, say .13) as an optional third
24 # argument. mver and sver are pasted together to form kver.
26 # linux-$kver.tar.bz2 and deblob-$mver must exist in the current
27 # directory, and the line that sets kver and extra in deblob-$mver
28 # must match mver and extra.
30 # The resulting tarball is put in linux-$kver-libre$extra.tar.bz2, and
31 # an uncompressed xdelta that produces linux-$kver-libre$extra.tar out
32 # of linux-$kver.tar is created as linux-$kver-libre$extra.xdelta.
33 # This xdelta can be distributed to enable third parties to easily
34 # reconstruct the binary tarball starting out of sources downloaded
35 # from kernel.org, but without distributing non-Free Software
36 # yourself, because xdelta (unlike patches) is not reversible: the
37 # removed bits are not present in it at all.
39 # To enable you to check the differences between the tarballs, a patch
40 # file is generated in linux-$kver-libre$extra.patch. This patch file
41 # contains the non-Free blobs, even though in reversed form, so its
42 # distribution is discouraged.
44 # At the end, the script attempts to generate a digital signature for
45 # the newly-created tarball. This is the last thing the script does,
46 # so interrupting it at that point to skip the signing won't fail to
49 # It is safe to interrupt the script at any other point. When it gets
50 # a ^C (other than during signing), it starts cleaning up all of its
51 # temporary and output files. If you insist, it may leave junk
52 # behind, and then it will refuse to run again before you clean it up
53 # by hand. It takes extra care to avoid overwriting useful files.
55 # If deblob-$mver finds any unexpected situation, it will error out,
56 # and then deblob-main will quit. Pass --force to deblob-main, before
57 # any other argument, for deblob-main to ignore any such situations.
60 --force) force=--force; shift;;
64 mver=$1 extra=$2 sver=$3
65 kver=$mver$sver libre=libre$extra
66 deblob= dir=`echo "$0" | sed 's,[^/]*$,,;s,^$,.,;s,/*$,,'`
68 if test ! -f linux-$kver.tar.bz2; then
69 echo linux-$kver.tar.bz2 does not exist >&2
73 if test -f deblob-$mver; then
75 elif test -f deblob; then
77 elif test -f $dir/deblob-$mver; then
78 cp $dir/deblob-$mver deblob
81 echo deblob does not exist >&2
85 x1="kver=$mver extra=$extra"
86 x2=`grep "^kver=[^ ]* extra=" $deblob`
87 if test "$x1" = "$x2"; then
90 echo deblob script does not match command-line arguments >&2
91 echo expected: $x1 >&2
99 linux-$kver-$libre.tar.bz2 \
100 linux-$kver-$libre.tar.bz2.asc \
101 linux-$kver-$libre.tar.bz2.sign \
102 linux-$kver-$libre.tar.lz \
103 linux-$kver-$libre.tar.lz.asc \
104 linux-$kver-$libre.tar.lz.sign \
106 linux-$kver-$libre.tar \
107 linux-$kver-$libre.patch \
108 linux-$kver-$libre.log \
109 linux-$kver-$libre.xdelta \
110 linux-$kver-$libre.xdelta.asc \
111 linux-$kver-$libre.xdelta.sign \
114 echo $f already exists >&2
117 cleanup="$cleanup $f"
126 echo $d already exists >&2
129 cleanup="$cleanup $d"
132 if test -f $dir/deblob-$kver; then
133 if cmp $dir/deblob-$kver $deblob; then
136 echo $dir/deblob-$kver and $deblob are different >&2
141 if test ! -f deblob-check; then
142 if test -f $dir/deblob-check; then
143 cp $dir/deblob-check deblob-check
146 if test -f $dir/deblob-check; then
147 if cmp $dir/deblob-check deblob-check; then
150 echo $dir/deblob-check and deblob-check are different >&2
156 trap "status=$?; echo cleaning up...; rm -rf $cleanup; (exit $status); exit" 0 1 2 15
160 echo Uncompressing linux-$kver.tar.bz2 into linux-$kver.tar
161 rm -rf linux-$kver linux-$kver.tar
162 bunzip2 < linux-$kver.tar.bz2 > linux-$kver.tar
164 echo Extracting linux-$kver.tar into linux-$kver
165 tar -xf linux-$kver.tar
166 rm -rf linux-$kver-$libre linux-$kver-$libre.tar
168 echo Copying linux-$kver to linux-$kver-$libre
169 cp linux-$kver.tar linux-$kver-$libre.tar
170 cp -lR linux-$kver/. linux-$kver-$libre
172 rm -f linux-$kver-$libre.log linux-$kver-$libre.log.tmp
173 echo Deblobbing within linux-$kver-$libre, saving output to linux-$kver-$libre.log
174 # We can't just pipe deblob into tee, for then we fail to detect
175 # error conditions. Use file renaming to tell whether we succeeded.
176 if (cd linux-$kver-$libre && /bin/sh ../$deblob $force) 2>&1; then
177 mv linux-$kver-$libre.log.tmp linux-$kver-$libre.log
178 fi | tee linux-$kver-$libre.log.tmp
179 if test ! -f linux-$kver-$libre.log; then
180 mv linux-$kver-$libre.log.tmp linux-$kver-$libre.log
181 echo $deblob failed, aborting >&2
184 rm -f linux-$kver-$libre.patch
186 # Do not copy these scripts for now, deblob-check regards itself as a blob.
187 # cp -p $0 $deblob deblob-check linux-$kver-$libre
189 echo Generating linux-$kver-$libre.patch
190 diff -druN linux-$kver linux-$kver-$libre > linux-$kver-$libre.patch || :
192 echo Removing removed or modified files from linux-$kver-$libre.tar
193 diff -rq linux-$kver linux-$kver-$libre |
195 s,^Only in \\(linux-$kver\\(/.*\\)\\?\\): \\(.*\\),\1/\3,p;
196 s,^Files \\(linux-$kver\\)/\\(.*\\) and \\1-$libre/\\2 differ,\\1/\\2,p;
198 xargs tar --delete -f linux-$kver-$libre.tar
200 echo Adding modified or added files to linux-$kver-$libre.tar
201 rm -rf orig-linux-$kver
202 mv linux-$kver orig-linux-$kver
203 mv linux-$kver-$libre linux-$kver
204 diff -rq orig-linux-$kver linux-$kver |
206 s,^Files orig-\\(linux-$kver/.*\\) and \\1 differ,\\1,p;
207 s,^Only in \\(linux-$kver\\(/.*\\)\\?\\): \\(.*\\),\\1/\\3,p;
209 xargs tar --append -f linux-$kver-$libre.tar
211 echo Wiping out extracted trees
212 rm -rf linux-$kver orig-linux-$kver
214 echo Creating xdelta between linux-$kver.tar and linux-$kver-$libre.tar
215 xdelta delta -0 linux-$kver.tar linux-$kver-$libre.tar linux-$kver-$libre.xdelta || : # xdelta returns nonzero on success
217 echo Compressing linux-$kver-$libre.tar and linux-$kver-$libre.xdelta
218 rm -f linux-$kver.tar
219 lzip -k9 linux-$kver-$libre.tar
220 bzip2 -9 linux-$kver-$libre.tar
221 if test -f linux-$kver-$libre.xdelta; then
222 lzip -k9 linux-$kver-$libre.xdelta
223 bzip2 -9 linux-$kver-$libre.xdelta
226 trap "status=$?; (exit $status); exit" 0 1 2 15
228 echo Done except for signing, feel free to interrupt
230 linux-$kver-$libre.tar.bz2 \
231 linux-$kver-$libre.tar.lz \
232 linux-$kver-$libre.xdelta.bz2 \
233 linux-$kver-$libre.xdelta.lz \
236 gpg -a --detach-sign $f
241 echo All set, please review linux-$kver-$libre.patch