11da177e4SLinus Torvalds#! /bin/sh
2b2441318SGreg Kroah-Hartman# SPDX-License-Identifier: GPL-2.0
31da177e4SLinus Torvalds# Script to apply kernel patches.
41da177e4SLinus Torvalds#   usage: patch-kernel [ sourcedir [ patchdir [ stopversion ] [ -acxx ] ] ]
51da177e4SLinus Torvalds#     The source directory defaults to /usr/src/linux, and the patch
61da177e4SLinus Torvalds#     directory defaults to the current directory.
71da177e4SLinus Torvalds# e.g.
81da177e4SLinus Torvalds#   scripts/patch-kernel . ..
91da177e4SLinus Torvalds#      Update the kernel tree in the current directory using patches in the
101da177e4SLinus Torvalds#      directory above to the latest Linus kernel
111da177e4SLinus Torvalds#   scripts/patch-kernel . .. -ac
121da177e4SLinus Torvalds#      Get the latest Linux kernel and patch it with the latest ac patch
131da177e4SLinus Torvalds#   scripts/patch-kernel . .. 2.4.9
141da177e4SLinus Torvalds#      Gets standard kernel 2.4.9
151da177e4SLinus Torvalds#   scripts/patch-kernel . .. 2.4.9 -ac
161da177e4SLinus Torvalds#      Gets 2.4.9 with latest ac patches
171da177e4SLinus Torvalds#   scripts/patch-kernel . .. 2.4.9 -ac11
181da177e4SLinus Torvalds#      Gets 2.4.9 with ac patch ac11
191da177e4SLinus Torvalds#   Note: It uses the patches relative to the Linus kernels, not the
201da177e4SLinus Torvalds#   ac to ac relative patches
211da177e4SLinus Torvalds#
221da177e4SLinus Torvalds# It determines the current kernel version from the top-level Makefile.
231da177e4SLinus Torvalds# It then looks for patches for the next sublevel in the patch directory.
241da177e4SLinus Torvalds# This is applied using "patch -p1 -s" from within the kernel directory.
251da177e4SLinus Torvalds# A check is then made for "*.rej" files to see if the patch was
261da177e4SLinus Torvalds# successful.  If it is, then all of the "*.orig" files are removed.
271da177e4SLinus Torvalds#
281da177e4SLinus Torvalds#       Nick Holloway <Nick.Holloway@alfie.demon.co.uk>, 2nd January 1995.
291da177e4SLinus Torvalds#
301da177e4SLinus Torvalds# Added support for handling multiple types of compression. What includes
3138385f8fSMasahiro Yamada# gzip, bzip, bzip2, zip, compress, and plaintext.
321da177e4SLinus Torvalds#
331da177e4SLinus Torvalds#       Adam Sulmicki <adam@cfar.umd.edu>, 1st January 1997.
341da177e4SLinus Torvalds#
351da177e4SLinus Torvalds# Added ability to stop at a given version number
361da177e4SLinus Torvalds# Put the full version number (i.e. 2.3.31) as the last parameter
371da177e4SLinus Torvalds#       Dave Gilbert <linux@treblig.org>, 11th December 1999.
381da177e4SLinus Torvalds
391da177e4SLinus Torvalds# Fixed previous patch so that if we are already at the correct version
401da177e4SLinus Torvalds# not to patch up.
411da177e4SLinus Torvalds#
421da177e4SLinus Torvalds# Added -ac option, use -ac or -ac9 (say) to stop at a particular version
431da177e4SLinus Torvalds#       Dave Gilbert <linux@treblig.org>, 29th September 2001.
441da177e4SLinus Torvalds#
451da177e4SLinus Torvalds# Add support for (use of) EXTRAVERSION (to support 2.6.8.x, e.g.);
461da177e4SLinus Torvalds# update usage message;
471da177e4SLinus Torvalds# fix some whitespace damage;
481da177e4SLinus Torvalds# be smarter about stopping when current version is larger than requested;
49f4b09ebcSAdrian Bunk#	Randy Dunlap <rdunlap@xenotime.net>, 2004-AUG-18.
511922163cSRandy.Dunlap# Add better support for (non-incremental) 2.6.x.y patches;
521922163cSRandy.Dunlap# If an ending version number if not specified, the script automatically
531922163cSRandy.Dunlap# increments the SUBLEVEL (x in 2.6.x.y) until no more patch files are found;
541922163cSRandy.Dunlap# however, EXTRAVERSION (y in 2.6.x.y) is never automatically incremented
551922163cSRandy.Dunlap# but must be specified fully.
571922163cSRandy.Dunlap# patch-kernel does not normally support reverse patching, but does so when
581922163cSRandy.Dunlap# applying EXTRAVERSION (x.y) patches, so that moving from 2.6.11.y to 2.6.11.z
591922163cSRandy.Dunlap# is easy and handled by the script (reverse 2.6.11.y and apply 2.6.11.z).
60f4b09ebcSAdrian Bunk#	Randy Dunlap <rdunlap@xenotime.net>, 2005-APR-08.
631da177e4SLinus Torvalds
641da177e4SLinus Torvalds# Set directories from arguments, or use defaults.
651da177e4SLinus Torvaldssourcedir=${1-/usr/src/linux}
661da177e4SLinus Torvaldspatchdir=${2-.}
671da177e4SLinus Torvaldsstopvers=${3-default}
681da177e4SLinus Torvalds
6922d6a6a0SAndreas Mohrif [ "$1" = -h -o "$1" = --help -o ! -r "$sourcedir/Makefile" ]; then
701da177e4SLinus Torvaldscat << USAGE
711922163cSRandy.Dunlapusage: $PNAME [-h] [ sourcedir [ patchdir [ stopversion ] [ -acxx ] ] ]
721da177e4SLinus Torvalds  source directory defaults to /usr/src/linux,
731da177e4SLinus Torvalds  patch directory defaults to the current directory,
741da177e4SLinus Torvalds  stopversion defaults to <all in patchdir>.
751da177e4SLinus TorvaldsUSAGE
761da177e4SLinus Torvaldsexit 1
771da177e4SLinus Torvaldsfi
781da177e4SLinus Torvalds
791da177e4SLinus Torvalds# See if we have any -ac options
801da177e4SLinus Torvaldsfor PARM in $*
811da177e4SLinus Torvaldsdo
821da177e4SLinus Torvalds  case $PARM in
831da177e4SLinus Torvalds	  -ac*)
841da177e4SLinus Torvalds		  gotac=$PARM;
851da177e4SLinus Torvalds
861da177e4SLinus Torvalds	esac;
871da177e4SLinus Torvaldsdone
881da177e4SLinus Torvalds
891922163cSRandy.Dunlap# ---------------------------------------------------------------------------
901922163cSRandy.Dunlap# arg1 is filename
911922163cSRandy.DunlapnoFile () {
921922163cSRandy.Dunlap	echo "cannot find patch file: ${patch}"
931922163cSRandy.Dunlap	exit 1
961922163cSRandy.Dunlap# ---------------------------------------------------------------------------
971922163cSRandy.Dunlapbackwards () {
981922163cSRandy.Dunlap	echo "$PNAME does not support reverse patching"
991922163cSRandy.Dunlap	exit 1
1021da177e4SLinus Torvalds# ---------------------------------------------------------------------------
1031da177e4SLinus Torvalds# Find a file, first parameter is basename of file
1041da177e4SLinus Torvalds# it tries many compression mechanisms and sets variables to say how to get it
1051da177e4SLinus TorvaldsfindFile () {
1061da177e4SLinus Torvalds  filebase=$1;
1071da177e4SLinus Torvalds
1081da177e4SLinus Torvalds  if [ -r ${filebase}.gz ]; then
1091da177e4SLinus Torvalds		ext=".gz"
1101da177e4SLinus Torvalds		name="gzip"
1111da177e4SLinus Torvalds		uncomp="gunzip -dc"
1121da177e4SLinus Torvalds  elif [ -r ${filebase}.bz  ]; then
1131da177e4SLinus Torvalds		ext=".bz"
1141da177e4SLinus Torvalds		name="bzip"
1151da177e4SLinus Torvalds		uncomp="bunzip -dc"
1161da177e4SLinus Torvalds  elif [ -r ${filebase}.bz2 ]; then
1171da177e4SLinus Torvalds		ext=".bz2"
1181da177e4SLinus Torvalds		name="bzip2"
1191da177e4SLinus Torvalds		uncomp="bunzip2 -dc"
120354fa22fSShawn Landden  elif [ -r ${filebase}.xz ]; then
121354fa22fSShawn Landden                ext=".xz"
122354fa22fSShawn Landden                name="xz"
123354fa22fSShawn Landden                uncomp="xz -dc"
1241da177e4SLinus Torvalds  elif [ -r ${filebase}.zip ]; then
1251da177e4SLinus Torvalds		ext=".zip"
1261da177e4SLinus Torvalds		name="zip"
1271da177e4SLinus Torvalds		uncomp="unzip -d"
1281da177e4SLinus Torvalds  elif [ -r ${filebase}.Z ]; then
1291da177e4SLinus Torvalds		ext=".Z"
1301da177e4SLinus Torvalds		name="uncompress"
1311da177e4SLinus Torvalds		uncomp="uncompress -c"
1321da177e4SLinus Torvalds  elif [ -r ${filebase} ]; then
1331da177e4SLinus Torvalds		ext=""
1341da177e4SLinus Torvalds		name="plaintext"
1351da177e4SLinus Torvalds		uncomp="cat"
1361da177e4SLinus Torvalds  else
1371da177e4SLinus Torvalds	return 1;
1381da177e4SLinus Torvalds  fi
1391da177e4SLinus Torvalds
1401da177e4SLinus Torvalds  return 0;
1411da177e4SLinus Torvalds}
1421da177e4SLinus Torvalds
1431da177e4SLinus Torvalds# ---------------------------------------------------------------------------
1441da177e4SLinus Torvalds# Apply a patch and check it goes in cleanly
1451da177e4SLinus Torvalds# First param is patch name (e.g. patch-2.4.9-ac5) - without path or extension
1461da177e4SLinus Torvalds
1471da177e4SLinus TorvaldsapplyPatch () {
1481da177e4SLinus Torvalds  echo -n "Applying $1 (${name})... "
1491da177e4SLinus Torvalds  if $uncomp ${patchdir}/$1${ext} | patch -p1 -s -N -E -d $sourcedir
1501da177e4SLinus Torvalds  then
1511da177e4SLinus Torvalds    echo "done."
1521da177e4SLinus Torvalds  else
1531da177e4SLinus Torvalds    echo "failed.  Clean up yourself."
1541da177e4SLinus Torvalds    return 1;
1551da177e4SLinus Torvalds  fi
1561da177e4SLinus Torvalds  if [ "`find $sourcedir/ '(' -name '*.rej' -o -name '.*.rej' ')' -print`" ]
1571da177e4SLinus Torvalds  then
1581da177e4SLinus Torvalds    echo "Aborting.  Reject files found."
1591da177e4SLinus Torvalds    return 1;
1601da177e4SLinus Torvalds  fi
1611da177e4SLinus Torvalds  # Remove backup files
1621da177e4SLinus Torvalds  find $sourcedir/ '(' -name '*.orig' -o -name '.*.orig' ')' -exec rm -f {} \;
16338385f8fSMasahiro Yamada
1641da177e4SLinus Torvalds  return 0;
1651da177e4SLinus Torvalds}
1661da177e4SLinus Torvalds
1671922163cSRandy.Dunlap# ---------------------------------------------------------------------------
1681922163cSRandy.Dunlap# arg1 is patch filename
1691922163cSRandy.DunlapreversePatch () {
1701922163cSRandy.Dunlap	echo -n "Reversing $1 (${name}) ... "
1711922163cSRandy.Dunlap	if $uncomp ${patchdir}/"$1"${ext} | patch -p1 -Rs -N -E -d $sourcedir
1721922163cSRandy.Dunlap	then
1731922163cSRandy.Dunlap		echo "done."
1741922163cSRandy.Dunlap	else
1751922163cSRandy.Dunlap		echo "failed.  Clean it up."
1761922163cSRandy.Dunlap		exit 1
1771922163cSRandy.Dunlap	fi
1781922163cSRandy.Dunlap	if [ "`find $sourcedir/ '(' -name '*.rej' -o -name '.*.rej' ')' -print`" ]
1791922163cSRandy.Dunlap	then
1801922163cSRandy.Dunlap		echo "Aborting.  Reject files found."
1811922163cSRandy.Dunlap		return 1
1821922163cSRandy.Dunlap	fi
1831922163cSRandy.Dunlap	# Remove backup files
1841922163cSRandy.Dunlap	find $sourcedir/ '(' -name '*.orig' -o -name '.*.orig' ')' -exec rm -f {} \;
1861922163cSRandy.Dunlap	return 0
1891da177e4SLinus Torvalds# set current VERSION, PATCHLEVEL, SUBLEVEL, EXTRAVERSION
19022d6a6a0SAndreas Mohr# force $TMPFILEs below to be in local directory: a slash character prevents
19122d6a6a0SAndreas Mohr# the dot command from using the search path.
19222d6a6a0SAndreas MohrTMPFILE=`mktemp ./.tmpver.XXXXXX` || { echo "cannot make temp file" ; exit 1; }
1931da177e4SLinus Torvaldsgrep -E "^(VERSION|PATCHLEVEL|SUBLEVEL|EXTRAVERSION)" $sourcedir/Makefile > $TMPFILE
1941da177e4SLinus Torvaldstr -d [:blank:] < $TMPFILE > $TMPFILE.1
19522d6a6a0SAndreas Mohr. $TMPFILE.1
1961da177e4SLinus Torvaldsrm -f $TMPFILE*
1971da177e4SLinus Torvaldsif [ -z "$VERSION" -o -z "$PATCHLEVEL" -o -z "$SUBLEVEL" ]
1981da177e4SLinus Torvaldsthen
1991da177e4SLinus Torvalds    echo "unable to determine current kernel version" >&2
2001da177e4SLinus Torvalds    exit 1
2011da177e4SLinus Torvaldsfi
2021da177e4SLinus Torvalds
2031da177e4SLinus TorvaldsNAME=`grep ^NAME $sourcedir/Makefile`
2041da177e4SLinus TorvaldsNAME=${NAME##*=}
2051da177e4SLinus Torvalds
2061da177e4SLinus Torvaldsecho "Current kernel version is $VERSION.$PATCHLEVEL.$SUBLEVEL${EXTRAVERSION} ($NAME)"
2071da177e4SLinus Torvalds
2081da177e4SLinus Torvalds# strip EXTRAVERSION to just a number (drop leading '.' and trailing additions)
2091da177e4SLinus TorvaldsEXTRAVER=
2101da177e4SLinus Torvaldsif [ x$EXTRAVERSION != "x" ]
2111da177e4SLinus Torvaldsthen
21222d6a6a0SAndreas Mohr	EXTRAVER=${EXTRAVERSION#.}
2131da177e4SLinus Torvalds	EXTRAVER=${EXTRAVER%%[[:punct:]]*}
2141922163cSRandy.Dunlap	#echo "$PNAME: changing EXTRAVERSION from $EXTRAVERSION to $EXTRAVER"
2151da177e4SLinus Torvaldsfi
2161da177e4SLinus Torvalds
2171da177e4SLinus Torvalds#echo "stopvers=$stopvers"
2181da177e4SLinus Torvaldsif [ $stopvers != "default" ]; then
2191da177e4SLinus Torvalds	STOPSUBLEVEL=`echo $stopvers | cut -d. -f3`
2201da177e4SLinus Torvalds	STOPEXTRA=`echo $stopvers | cut -d. -f4`
22107584163SErkki Lintunen	STOPFULLVERSION=${stopvers%%.$STOPEXTRA}
2231da177e4SLinus Torvaldselse
2241da177e4SLinus Torvalds	STOPSUBLEVEL=9999
2251da177e4SLinus Torvalds	STOPEXTRA=9999
2261da177e4SLinus Torvaldsfi
2271da177e4SLinus Torvalds
2281922163cSRandy.Dunlap# This all assumes a 2.6.x[.y] kernel tree.
2291922163cSRandy.Dunlap# Don't allow backwards/reverse patching.
2301922163cSRandy.Dunlapif [ $STOPSUBLEVEL -lt $SUBLEVEL ]; then
2311922163cSRandy.Dunlap	backwards
2341922163cSRandy.Dunlapif [ x$EXTRAVER != "x" ]; then
2401922163cSRandy.Dunlapif [ x$EXTRAVER != "x" ]; then
2411922163cSRandy.Dunlap	echo "backing up to: $VERSION.$PATCHLEVEL.$SUBLEVEL"
2421922163cSRandy.Dunlap	patch="patch-${CURRENTFULLVERSION}"
2431922163cSRandy.Dunlap	findFile $patchdir/${patch} || noFile ${patch}
2441922163cSRandy.Dunlap	reversePatch ${patch} || exit 1
2461da177e4SLinus Torvalds
2471922163cSRandy.Dunlap# now current is 2.6.x, with no EXTRA applied,
2481922163cSRandy.Dunlap# so update to target SUBLEVEL (2.6.SUBLEVEL)
2491922163cSRandy.Dunlap# and then to target EXTRAVER (2.6.SUB.EXTRAVER) if requested.
2501922163cSRandy.Dunlap# If not ending sublevel is specified, it is incremented until
2511922163cSRandy.Dunlap# no further sublevels are found.
2531922163cSRandy.Dunlapif [ $STOPSUBLEVEL -gt $SUBLEVEL ]; then
2541922163cSRandy.Dunlapwhile :				# incrementing SUBLEVEL (s in v.p.s)
2571922163cSRandy.Dunlap    EXTRAVER=
258177525d2SAndreas Mohr    if [ x$STOPFULLVERSION = x$CURRENTFULLVERSION ]; then
2591da177e4SLinus Torvalds        echo "Stopping at $CURRENTFULLVERSION base as requested."
2601da177e4SLinus Torvalds        break
2611da177e4SLinus Torvalds    fi
2621da177e4SLinus Torvalds
26322d6a6a0SAndreas Mohr    SUBLEVEL=$(($SUBLEVEL + 1))
2651922163cSRandy.Dunlap    #echo "#___ trying $FULLVERSION ___"
2661da177e4SLinus Torvalds
26722d6a6a0SAndreas Mohr    if [ $(($SUBLEVEL)) -gt $(($STOPSUBLEVEL)) ]; then
2681da177e4SLinus Torvalds	echo "Stopping since sublevel ($SUBLEVEL) is beyond stop-sublevel ($STOPSUBLEVEL)"
2691da177e4SLinus Torvalds	exit 1
2701da177e4SLinus Torvalds    fi
2711da177e4SLinus Torvalds
2721da177e4SLinus Torvalds    patch=patch-$FULLVERSION
2731da177e4SLinus Torvalds    # See if the file exists and find extension
2741922163cSRandy.Dunlap    findFile $patchdir/${patch} || noFile ${patch}
2751da177e4SLinus Torvalds
2761da177e4SLinus Torvalds    # Apply the patch and check all is OK
2771da177e4SLinus Torvalds    applyPatch $patch || break
2781da177e4SLinus Torvaldsdone
2791922163cSRandy.Dunlap#echo "#___sublevel all done"
2821922163cSRandy.Dunlap# There is no incremental searching for extraversion...
2831922163cSRandy.Dunlapif [ "$STOPEXTRA" != "" ]; then
2841922163cSRandy.Dunlapwhile :				# just to allow break
2861922163cSRandy.Dunlap# apply STOPEXTRA directly (not incrementally) (x in v.p.s.x)
2881922163cSRandy.Dunlap	#echo "#... trying $FULLVERSION ..."
2891922163cSRandy.Dunlap	patch=patch-$FULLVERSION
2911922163cSRandy.Dunlap	# See if the file exists and find extension
2921922163cSRandy.Dunlap	findFile $patchdir/${patch} || noFile ${patch}
2941922163cSRandy.Dunlap	# Apply the patch and check all is OK
2951922163cSRandy.Dunlap	applyPatch $patch || break
2961922163cSRandy.Dunlap	#echo "#___extraver all done"
2971922163cSRandy.Dunlap	break
3001da177e4SLinus Torvalds
3011da177e4SLinus Torvaldsif [ x$gotac != x ]; then
3021da177e4SLinus Torvalds  # Out great user wants the -ac patches
3031da177e4SLinus Torvalds	# They could have done -ac (get latest) or -acxx where xx=version they want
30422d6a6a0SAndreas Mohr	if [ $gotac = "-ac" ]; then
3051da177e4SLinus Torvalds	  # They want the latest version
3061da177e4SLinus Torvalds		HIGHESTPATCH=0
3071da177e4SLinus Torvalds		for PATCHNAMES in $patchdir/patch-${CURRENTFULLVERSION}-ac*\.*
3081da177e4SLinus Torvalds		do
3091da177e4SLinus Torvalds			ACVALUE=`echo $PATCHNAMES | sed -e 's/^.*patch-[0-9.]*-ac\([0-9]*\).*/\1/'`
3101da177e4SLinus Torvalds			# Check it is actually a recognised patch type
3111da177e4SLinus Torvalds			findFile $patchdir/patch-${CURRENTFULLVERSION}-ac${ACVALUE} || break
3121da177e4SLinus Torvalds
3131da177e4SLinus Torvalds		  if [ $ACVALUE -gt $HIGHESTPATCH ]; then
3141da177e4SLinus Torvalds			  HIGHESTPATCH=$ACVALUE
3151da177e4SLinus Torvalds		  fi
3161da177e4SLinus Torvalds		done
3171da177e4SLinus Torvalds
3181da177e4SLinus Torvalds		if [ $HIGHESTPATCH -ne 0 ]; then
3191da177e4SLinus Torvalds			findFile $patchdir/patch-${CURRENTFULLVERSION}-ac${HIGHESTPATCH} || break
3201da177e4SLinus Torvalds			applyPatch patch-${CURRENTFULLVERSION}-ac${HIGHESTPATCH}
3211da177e4SLinus Torvalds		else
3221da177e4SLinus Torvalds		  echo "No -ac patches found"
3231da177e4SLinus Torvalds		fi
3241da177e4SLinus Torvalds	else
3251da177e4SLinus Torvalds	  # They want an exact version
3261da177e4SLinus Torvalds		findFile $patchdir/patch-${CURRENTFULLVERSION}${gotac} || {
3271da177e4SLinus Torvalds		  echo "Sorry, I couldn't find the $gotac patch for $CURRENTFULLVERSION.  Hohum."
3281da177e4SLinus Torvalds			exit 1
3291da177e4SLinus Torvalds		}
3301da177e4SLinus Torvalds		applyPatch patch-${CURRENTFULLVERSION}${gotac}
3311da177e4SLinus Torvalds	fi
3321da177e4SLinus Torvaldsfi