[PATCH] patch-kernel: support non-incremental 2.6.x.y 'stable' patches
Add better support for (non-incremental) 2.6.x.y patches; If an ending
version number if not specified, the script automatically increments the
SUBLEVEL (x in 2.6.x.y) until no more patch files are found; however,
EXTRAVERSION (y in 2.6.x.y) is never automatically incremented but must be
specified fully.
patch-kernel does not normally support reverse patching, but does so when
applying EXTRAVERSION (x.y) patches, so that moving from 2.6.11.y to
2.6.11.z is easy and handled by the script (reverse 2.6.11.y and apply
2.6.11.z).
Signed-off-by: Randy Dunlap <rddunlap@osdl.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/scripts/patch-kernel b/scripts/patch-kernel
index 43af010..f2d47ca 100755
--- a/scripts/patch-kernel
+++ b/scripts/patch-kernel
@@ -46,6 +46,19 @@
# fix some whitespace damage;
# be smarter about stopping when current version is larger than requested;
# Randy Dunlap <rddunlap@osdl.org>, 2004-AUG-18.
+#
+# Add better support for (non-incremental) 2.6.x.y patches;
+# If an ending version number if not specified, the script automatically
+# increments the SUBLEVEL (x in 2.6.x.y) until no more patch files are found;
+# however, EXTRAVERSION (y in 2.6.x.y) is never automatically incremented
+# but must be specified fully.
+#
+# patch-kernel does not normally support reverse patching, but does so when
+# applying EXTRAVERSION (x.y) patches, so that moving from 2.6.11.y to 2.6.11.z
+# is easy and handled by the script (reverse 2.6.11.y and apply 2.6.11.z).
+# Randy Dunlap <rddunlap@osdl.org>, 2005-APR-08.
+
+PNAME=patch-kernel
# Set directories from arguments, or use defaults.
sourcedir=${1-/usr/src/linux}
@@ -54,7 +67,7 @@
if [ "$1" == -h -o "$1" == --help -o ! -r "$sourcedir/Makefile" ]; then
cat << USAGE
-usage: patch-kernel [-h] [ sourcedir [ patchdir [ stopversion ] [ -acxx ] ] ]
+usage: $PNAME [-h] [ sourcedir [ patchdir [ stopversion ] [ -acxx ] ] ]
source directory defaults to /usr/src/linux,
patch directory defaults to the current directory,
stopversion defaults to <all in patchdir>.
@@ -73,6 +86,19 @@
done
# ---------------------------------------------------------------------------
+# arg1 is filename
+noFile () {
+ echo "cannot find patch file: ${patch}"
+ exit 1
+}
+
+# ---------------------------------------------------------------------------
+backwards () {
+ echo "$PNAME does not support reverse patching"
+ exit 1
+}
+
+# ---------------------------------------------------------------------------
# Find a file, first parameter is basename of file
# it tries many compression mechanisms and sets variables to say how to get it
findFile () {
@@ -133,6 +159,28 @@
return 0;
}
+# ---------------------------------------------------------------------------
+# arg1 is patch filename
+reversePatch () {
+ echo -n "Reversing $1 (${name}) ... "
+ if $uncomp ${patchdir}/"$1"${ext} | patch -p1 -Rs -N -E -d $sourcedir
+ then
+ echo "done."
+ else
+ echo "failed. Clean it up."
+ exit 1
+ fi
+ if [ "`find $sourcedir/ '(' -name '*.rej' -o -name '.*.rej' ')' -print`" ]
+ then
+ echo "Aborting. Reject files found."
+ return 1
+ fi
+ # Remove backup files
+ find $sourcedir/ '(' -name '*.orig' -o -name '.*.orig' ')' -exec rm -f {} \;
+
+ return 0
+}
+
# set current VERSION, PATCHLEVEL, SUBLEVEL, EXTRAVERSION
TMPFILE=`mktemp .tmpver.XXXXXX` || { echo "cannot make temp file" ; exit 1; }
grep -E "^(VERSION|PATCHLEVEL|SUBLEVEL|EXTRAVERSION)" $sourcedir/Makefile > $TMPFILE
@@ -160,53 +208,57 @@
EXTRAVER=$EXTRAVERSION
fi
EXTRAVER=${EXTRAVER%%[[:punct:]]*}
- #echo "patch-kernel: changing EXTRAVERSION from $EXTRAVERSION to $EXTRAVER"
+ #echo "$PNAME: changing EXTRAVERSION from $EXTRAVERSION to $EXTRAVER"
fi
#echo "stopvers=$stopvers"
if [ $stopvers != "default" ]; then
STOPSUBLEVEL=`echo $stopvers | cut -d. -f3`
STOPEXTRA=`echo $stopvers | cut -d. -f4`
- #echo "STOPSUBLEVEL=$STOPSUBLEVEL, STOPEXTRA=$STOPEXTRA"
+ #echo "#___STOPSUBLEVEL=/$STOPSUBLEVEL/, STOPEXTRA=/$STOPEXTRA/"
else
STOPSUBLEVEL=9999
STOPEXTRA=9999
fi
+# This all assumes a 2.6.x[.y] kernel tree.
+# Don't allow backwards/reverse patching.
+if [ $STOPSUBLEVEL -lt $SUBLEVEL ]; then
+ backwards
+fi
+
+if [ x$EXTRAVER != "x" ]; then
+ CURRENTFULLVERSION="$VERSION.$PATCHLEVEL.$SUBLEVEL.$EXTRAVER"
+else
+ CURRENTFULLVERSION="$VERSION.$PATCHLEVEL.$SUBLEVEL"
+fi
+
+if [ x$EXTRAVER != "x" ]; then
+ echo "backing up to: $VERSION.$PATCHLEVEL.$SUBLEVEL"
+ patch="patch-${CURRENTFULLVERSION}"
+ findFile $patchdir/${patch} || noFile ${patch}
+ reversePatch ${patch} || exit 1
+fi
+
+# now current is 2.6.x, with no EXTRA applied,
+# so update to target SUBLEVEL (2.6.SUBLEVEL)
+# and then to target EXTRAVER (2.6.SUB.EXTRAVER) if requested.
+# If not ending sublevel is specified, it is incremented until
+# no further sublevels are found.
+
+if [ $STOPSUBLEVEL -gt $SUBLEVEL ]; then
while : # incrementing SUBLEVEL (s in v.p.s)
do
- if [ x$EXTRAVER != "x" ]; then
- CURRENTFULLVERSION="$VERSION.$PATCHLEVEL.$SUBLEVEL.$EXTRAVER"
- else
- CURRENTFULLVERSION="$VERSION.$PATCHLEVEL.$SUBLEVEL"
- fi
-
+ CURRENTFULLVERSION="$VERSION.$PATCHLEVEL.$SUBLEVEL"
+ EXTRAVER=
if [ $stopvers == $CURRENTFULLVERSION ]; then
echo "Stopping at $CURRENTFULLVERSION base as requested."
break
fi
- while : # incrementing EXTRAVER (x in v.p.s.x)
- do
- EXTRAVER=$((EXTRAVER + 1))
- FULLVERSION="$VERSION.$PATCHLEVEL.$SUBLEVEL.$EXTRAVER"
- #echo "... trying $FULLVERSION ..."
-
- patch=patch-$FULLVERSION
-
- # See if the file exists and find extension
- findFile $patchdir/${patch} || break
-
- # Apply the patch and check all is OK
- applyPatch $patch || break
-
- continue 2
- done
-
- EXTRAVER=
SUBLEVEL=$((SUBLEVEL + 1))
FULLVERSION="$VERSION.$PATCHLEVEL.$SUBLEVEL"
- #echo "___ trying $FULLVERSION ___"
+ #echo "#___ trying $FULLVERSION ___"
if [ $((SUBLEVEL)) -gt $((STOPSUBLEVEL)) ]; then
echo "Stopping since sublevel ($SUBLEVEL) is beyond stop-sublevel ($STOPSUBLEVEL)"
@@ -214,14 +266,33 @@
fi
patch=patch-$FULLVERSION
-
# See if the file exists and find extension
- findFile $patchdir/${patch} || break
+ findFile $patchdir/${patch} || noFile ${patch}
# Apply the patch and check all is OK
applyPatch $patch || break
done
-#echo "base all done"
+#echo "#___sublevel all done"
+fi
+
+# There is no incremental searching for extraversion...
+if [ "$STOPEXTRA" != "" ]; then
+while : # just to allow break
+do
+# apply STOPEXTRA directly (not incrementally) (x in v.p.s.x)
+ FULLVERSION="$VERSION.$PATCHLEVEL.$SUBLEVEL.$STOPEXTRA"
+ #echo "#... trying $FULLVERSION ..."
+ patch=patch-$FULLVERSION
+
+ # See if the file exists and find extension
+ findFile $patchdir/${patch} || noFile ${patch}
+
+ # Apply the patch and check all is OK
+ applyPatch $patch || break
+ #echo "#___extraver all done"
+ break
+done
+fi
if [ x$gotac != x ]; then
# Out great user wants the -ac patches