scripts/queue-builder

#!/bin/bash

# Layer on a patch queue pending for a stable release.
#
# We pretend it is a quilt series queue, but we don't
# use quilt or "git quiltimport", since the latter can
# construct missing fields that quilt doesn't care about.
# Since we format-patch'd them, we might as well git-am
# them.


# BASE_VER=v2.6.34

if [ ! -f Makefile ]; then
	echo No Makefile found, are you in a bare clone?
	exit 1
fi

VERSION=`grep '^VERSION =' Makefile |awk '{print $3}'`
PATCHLEVEL=`grep '^PATCHLEVEL =' Makefile |awk '{print $3}'`
SUBLEVEL=`grep '^SUBLEVEL =' Makefile |awk '{print $3}'`

BASE_VER=v$VERSION.$PATCHLEVEL.$SUBLEVEL

# Length of review cycle.
HOURS=72

HERE=`dirname $0`
HEADER=$HERE/../misc/header
QUEUE_PATH=$HERE/../queue

SERIES=$QUEUE_PATH/series
if [ ! -f $SERIES ];then
	echo no series file in $QUEUE_PATH
	exit 1
fi

DOT=0
while [ 1 ]; do
	EXTRA_VER=$BASE_VER.$DOT
	git rev-parse $BASE_VER.$[$DOT+1] > /dev/null 2>&1
	if [ $? != 0 ]; then
		break
	fi
	DOT=$[$DOT+1]
done

if [ $DOT = 0 ];then
	echo failed to find tags for $BASE_VER in $PWD
	echo check you are in a kernel git repo for stable
	exit 1
fi

DOT=$[$DOT+1]

# Only used in the dir name for the gse patch queue
DATE=`date --iso-8601=date`

BRANCH=$BASE_VER.$DOT-queue-$DATE
git checkout -b $BRANCH $EXTRA_VER
if [ $? != 0 ]; then
	echo failed to checkout a branch based on $EXTRA_VER
	exit 1
fi

# Manually AM the list
COUNT=0
for i in `cat $SERIES | grep '^[a-zA-Z0-9_]'`
do
	COUNT=$[$COUNT+1]
	if [ ! -f "$QUEUE_PATH/$i" ];then
		echo File $QUEUE_PATH/$i doesnt exist
		exit 1
	fi

	echo -n "$COUNT: "
	git am --keep-non-patch $QUEUE_PATH/$i
	if [ $? != 0 ];then
		echo commit $COUNT: git am of $i failed. STBU.
		exit 1
	fi
done

# Crap them back out as a numbered, prefixed group for gse.

PATCHLOG=`mktemp`

if [ -d $BRANCH-patches ]; then
	echo moving old $BRANCH-patches to $BRANCH-patches~
	mv -f $BRANCH-patches $BRANCH-patches~
fi

echo Creating patches in $BRANCH-patches
git format-patch --cover-letter --subject-prefix="v2.6.34-stable" \
	 -o $BRANCH-patches $EXTRA_VER..$BRANCH > $PATCHLOG 2>&1
if [ $? != 0 ]; then
	echo format patch didnt return zero - check results\!
	echo Log is in $PATCHLOG
	exit 1
fi
rm -f $PATCHLOG

NEWCOUNT=`ls -1 $BRANCH-patches/|grep -v 0000-cover-letter.patch|wc -l`
if [ $COUNT -ne $NEWCOUNT ];then
	echo incorrect patch count, expected $COUNT, got $NEWCOUNT
	exit 1
fi

# Now fixup the cover letter.
MESSAGE=`mktemp`
cat <<EOF > $MESSAGE
This is the start of the longterm review cycle for the $BASE_VER.$DOT release.
There are $COUNT patches in this series, all will be posted as a response
to this one.  If anyone has any issues with these being applied, please
let us know.  If anyone is a maintainer of the proper subsystem, and
wants to add a Signed-off-by: line to the patch, please respond with it.

The full queue can be found at:
  http://git.kernel.org/?p=linux/kernel/git/paulg/longterm-queue-2.6.34.git

Please try to get reponses made within $HOURS hours, or it may be too late.

Thanks,
Paul.
---
EOF

sed -i  's/\*\*\* SUBJECT HERE \*\*\*/'$BASE_VER.$DOT' longterm review/' \
	 $BRANCH-patches/0000-cover-letter.patch 

( echo '/BLURB HERE/d' ;echo ".-1r $MESSAGE" ; echo w ; echo q) |\
	ed -s $BRANCH-patches/0000-cover-letter.patch 

# And munge a header onto each patch...
for i in `ls -1 $BRANCH-patches/|grep -v 0000-cover-letter.patch` ; do
	(echo '/^$/,r '$HEADER ; echo w ; echo q ) | ed -s $BRANCH-patches/$i
	if [ $? != 0 ];then
		echo adding header to $i failed
		exit 1
	fi
done

MT=`find $BRANCH-patches -empty`
if [ -n "$MT" ]; then
	echo something evil happened.  You have zero sized patches in:
	echo $MT
	exit 1
fi

exit 0