kpatch/test/integration/rebase-patches

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#!/bin/bash
#
# rebase a set of patches, assumes the kernel has already been downloaded into
# the kpatch $CACHEDIR.Output patches go into ./${ID}-${VERSION_ID}/
#
# Example:
#
# ./rebase-patches old_dir/*.patch
CACHEDIR="${CACHEDIR:-$HOME/.kpatch}"
SRCDIR="$CACHEDIR/src"
source /etc/os-release
OUTDIR=$(pwd)/${ID}-${VERSION_ID}
mkdir -p $OUTDIR
echo "* Making backup copy of kernel sources"
rm -rf ${SRCDIR}.orig
cp -r $SRCDIR ${SRCDIR}.orig
for P in $@; do
echo
echo "* Patch: $(basename $P)"
echo "** dry run..."
patch -d $CACHEDIR --dry-run --quiet -p0 < $P
[[ $? -ne 0 ]] && echo "*** Skipping! ***" && continue
echo "** patching..."
patch -d $CACHEDIR -p0 --no-backup-if-mismatch < $P
echo "** generating new $(basename $P)..."
NEWP=$OUTDIR/$(basename $P)
awk '/^diff|^patch/{exit} {print $LF}' $P > $NEWP
cd $CACHEDIR
diff -Nupr src.orig src >> $NEWP
cd -
echo "** reversing patch to restore tree..."
patch -d $CACHEDIR -p0 -R < $NEWP
done
echo "*** Removing backup copy of kernel sources"
rm -rf ${SRCDIR}.orig
echo
echo "*** Done"