1#! /bin/sh 2# Script to apply kernel patches. 3# usage: patch-kernel [ sourcedir [ patchdir [ stopversion ] [ -acxx ] ] ] 4# The source directory defaults to /usr/src/linux, and the patch 5# directory defaults to the current directory. 6# e.g. 7# scripts/patch-kernel . .. 8# Update the kernel tree in the current directory using patches in the 9# directory above to the latest Linus kernel 10# scripts/patch-kernel . .. -ac 11# Get the latest Linux kernel and patch it with the latest ac patch 12# scripts/patch-kernel . .. 2.4.9 13# Gets standard kernel 2.4.9 14# scripts/patch-kernel . .. 2.4.9 -ac 15# Gets 2.4.9 with latest ac patches 16# scripts/patch-kernel . .. 2.4.9 -ac11 17# Gets 2.4.9 with ac patch ac11 18# Note: It uses the patches relative to the Linus kernels, not the 19# ac to ac relative patches 20# 21# It determines the current kernel version from the top-level Makefile. 22# It then looks for patches for the next sublevel in the patch directory. 23# This is applied using "patch -p1 -s" from within the kernel directory. 24# A check is then made for "*.rej" files to see if the patch was 25# successful. If it is, then all of the "*.orig" files are removed. 26# 27# Nick Holloway <Nick.Holloway@alfie.demon.co.uk>, 2nd January 1995. 28# 29# Added support for handling multiple types of compression. What includes 30# gzip, bzip, bzip2, zip, compress, and plaintext. 31# 32# Adam Sulmicki <adam@cfar.umd.edu>, 1st January 1997. 33# 34# Added ability to stop at a given version number 35# Put the full version number (i.e. 2.3.31) as the last parameter 36# Dave Gilbert <linux@treblig.org>, 11th December 1999. 37 38# Fixed previous patch so that if we are already at the correct version 39# not to patch up. 40# 41# Added -ac option, use -ac or -ac9 (say) to stop at a particular version 42# Dave Gilbert <linux@treblig.org>, 29th September 2001. 43# 44# Add support for (use of) EXTRAVERSION (to support 2.6.8.x, e.g.); 45# update usage message; 46# fix some whitespace damage; 47# be smarter about stopping when current version is larger than requested; 48# Randy Dunlap <rdunlap@xenotime.net>, 2004-AUG-18. 49# 50# Add better support for (non-incremental) 2.6.x.y patches; 51# If an ending version number if not specified, the script automatically 52# increments the SUBLEVEL (x in 2.6.x.y) until no more patch files are found; 53# however, EXTRAVERSION (y in 2.6.x.y) is never automatically incremented 54# but must be specified fully. 55# 56# patch-kernel does not normally support reverse patching, but does so when 57# applying EXTRAVERSION (x.y) patches, so that moving from 2.6.11.y to 2.6.11.z 58# is easy and handled by the script (reverse 2.6.11.y and apply 2.6.11.z). 59# Randy Dunlap <rdunlap@xenotime.net>, 2005-APR-08. 60 61PNAME=patch-kernel 62 63# Set directories from arguments, or use defaults. 64sourcedir=${1-/usr/src/linux} 65patchdir=${2-.} 66stopvers=${3-default} 67 68if [ "$1" = -h -o "$1" = --help -o ! -r "$sourcedir/Makefile" ]; then 69cat << USAGE 70usage: $PNAME [-h] [ sourcedir [ patchdir [ stopversion ] [ -acxx ] ] ] 71 source directory defaults to /usr/src/linux, 72 patch directory defaults to the current directory, 73 stopversion defaults to <all in patchdir>. 74USAGE 75exit 1 76fi 77 78# See if we have any -ac options 79for PARM in $* 80do 81 case $PARM in 82 -ac*) 83 gotac=$PARM; 84 85 esac; 86done 87 88# --------------------------------------------------------------------------- 89# arg1 is filename 90noFile () { 91 echo "cannot find patch file: ${patch}" 92 exit 1 93} 94 95# --------------------------------------------------------------------------- 96backwards () { 97 echo "$PNAME does not support reverse patching" 98 exit 1 99} 100 101# --------------------------------------------------------------------------- 102# Find a file, first parameter is basename of file 103# it tries many compression mechanisms and sets variables to say how to get it 104findFile () { 105 filebase=$1; 106 107 if [ -r ${filebase}.gz ]; then 108 ext=".gz" 109 name="gzip" 110 uncomp="gunzip -dc" 111 elif [ -r ${filebase}.bz ]; then 112 ext=".bz" 113 name="bzip" 114 uncomp="bunzip -dc" 115 elif [ -r ${filebase}.bz2 ]; then 116 ext=".bz2" 117 name="bzip2" 118 uncomp="bunzip2 -dc" 119 elif [ -r ${filebase}.xz ]; then 120 ext=".xz" 121 name="xz" 122 uncomp="xz -dc" 123 elif [ -r ${filebase}.zip ]; then 124 ext=".zip" 125 name="zip" 126 uncomp="unzip -d" 127 elif [ -r ${filebase}.Z ]; then 128 ext=".Z" 129 name="uncompress" 130 uncomp="uncompress -c" 131 elif [ -r ${filebase} ]; then 132 ext="" 133 name="plaintext" 134 uncomp="cat" 135 else 136 return 1; 137 fi 138 139 return 0; 140} 141 142# --------------------------------------------------------------------------- 143# Apply a patch and check it goes in cleanly 144# First param is patch name (e.g. patch-2.4.9-ac5) - without path or extension 145 146applyPatch () { 147 echo -n "Applying $1 (${name})... " 148 if $uncomp ${patchdir}/$1${ext} | patch -p1 -s -N -E -d $sourcedir 149 then 150 echo "done." 151 else 152 echo "failed. Clean up yourself." 153 return 1; 154 fi 155 if [ "`find $sourcedir/ '(' -name '*.rej' -o -name '.*.rej' ')' -print`" ] 156 then 157 echo "Aborting. Reject files found." 158 return 1; 159 fi 160 # Remove backup files 161 find $sourcedir/ '(' -name '*.orig' -o -name '.*.orig' ')' -exec rm -f {} \; 162 163 return 0; 164} 165 166# --------------------------------------------------------------------------- 167# arg1 is patch filename 168reversePatch () { 169 echo -n "Reversing $1 (${name}) ... " 170 if $uncomp ${patchdir}/"$1"${ext} | patch -p1 -Rs -N -E -d $sourcedir 171 then 172 echo "done." 173 else 174 echo "failed. Clean it up." 175 exit 1 176 fi 177 if [ "`find $sourcedir/ '(' -name '*.rej' -o -name '.*.rej' ')' -print`" ] 178 then 179 echo "Aborting. Reject files found." 180 return 1 181 fi 182 # Remove backup files 183 find $sourcedir/ '(' -name '*.orig' -o -name '.*.orig' ')' -exec rm -f {} \; 184 185 return 0 186} 187 188# set current VERSION, PATCHLEVEL, SUBLEVEL, EXTRAVERSION 189# force $TMPFILEs below to be in local directory: a slash character prevents 190# the dot command from using the search path. 191TMPFILE=`mktemp ./.tmpver.XXXXXX` || { echo "cannot make temp file" ; exit 1; } 192grep -E "^(VERSION|PATCHLEVEL|SUBLEVEL|EXTRAVERSION)" $sourcedir/Makefile > $TMPFILE 193tr -d [:blank:] < $TMPFILE > $TMPFILE.1 194. $TMPFILE.1 195rm -f $TMPFILE* 196if [ -z "$VERSION" -o -z "$PATCHLEVEL" -o -z "$SUBLEVEL" ] 197then 198 echo "unable to determine current kernel version" >&2 199 exit 1 200fi 201 202NAME=`grep ^NAME $sourcedir/Makefile` 203NAME=${NAME##*=} 204 205echo "Current kernel version is $VERSION.$PATCHLEVEL.$SUBLEVEL${EXTRAVERSION} ($NAME)" 206 207# strip EXTRAVERSION to just a number (drop leading '.' and trailing additions) 208EXTRAVER= 209if [ x$EXTRAVERSION != "x" ] 210then 211 EXTRAVER=${EXTRAVERSION#.} 212 EXTRAVER=${EXTRAVER%%[[:punct:]]*} 213 #echo "$PNAME: changing EXTRAVERSION from $EXTRAVERSION to $EXTRAVER" 214fi 215 216#echo "stopvers=$stopvers" 217if [ $stopvers != "default" ]; then 218 STOPSUBLEVEL=`echo $stopvers | cut -d. -f3` 219 STOPEXTRA=`echo $stopvers | cut -d. -f4` 220 STOPFULLVERSION=${stopvers%%.$STOPEXTRA} 221 #echo "#___STOPSUBLEVEL=/$STOPSUBLEVEL/, STOPEXTRA=/$STOPEXTRA/" 222else 223 STOPSUBLEVEL=9999 224 STOPEXTRA=9999 225fi 226 227# This all assumes a 2.6.x[.y] kernel tree. 228# Don't allow backwards/reverse patching. 229if [ $STOPSUBLEVEL -lt $SUBLEVEL ]; then 230 backwards 231fi 232 233if [ x$EXTRAVER != "x" ]; then 234 CURRENTFULLVERSION="$VERSION.$PATCHLEVEL.$SUBLEVEL.$EXTRAVER" 235else 236 CURRENTFULLVERSION="$VERSION.$PATCHLEVEL.$SUBLEVEL" 237fi 238 239if [ x$EXTRAVER != "x" ]; then 240 echo "backing up to: $VERSION.$PATCHLEVEL.$SUBLEVEL" 241 patch="patch-${CURRENTFULLVERSION}" 242 findFile $patchdir/${patch} || noFile ${patch} 243 reversePatch ${patch} || exit 1 244fi 245 246# now current is 2.6.x, with no EXTRA applied, 247# so update to target SUBLEVEL (2.6.SUBLEVEL) 248# and then to target EXTRAVER (2.6.SUB.EXTRAVER) if requested. 249# If not ending sublevel is specified, it is incremented until 250# no further sublevels are found. 251 252if [ $STOPSUBLEVEL -gt $SUBLEVEL ]; then 253while : # incrementing SUBLEVEL (s in v.p.s) 254do 255 CURRENTFULLVERSION="$VERSION.$PATCHLEVEL.$SUBLEVEL" 256 EXTRAVER= 257 if [ x$STOPFULLVERSION = x$CURRENTFULLVERSION ]; then 258 echo "Stopping at $CURRENTFULLVERSION base as requested." 259 break 260 fi 261 262 SUBLEVEL=$(($SUBLEVEL + 1)) 263 FULLVERSION="$VERSION.$PATCHLEVEL.$SUBLEVEL" 264 #echo "#___ trying $FULLVERSION ___" 265 266 if [ $(($SUBLEVEL)) -gt $(($STOPSUBLEVEL)) ]; then 267 echo "Stopping since sublevel ($SUBLEVEL) is beyond stop-sublevel ($STOPSUBLEVEL)" 268 exit 1 269 fi 270 271 patch=patch-$FULLVERSION 272 # See if the file exists and find extension 273 findFile $patchdir/${patch} || noFile ${patch} 274 275 # Apply the patch and check all is OK 276 applyPatch $patch || break 277done 278#echo "#___sublevel all done" 279fi 280 281# There is no incremental searching for extraversion... 282if [ "$STOPEXTRA" != "" ]; then 283while : # just to allow break 284do 285# apply STOPEXTRA directly (not incrementally) (x in v.p.s.x) 286 FULLVERSION="$VERSION.$PATCHLEVEL.$SUBLEVEL.$STOPEXTRA" 287 #echo "#... trying $FULLVERSION ..." 288 patch=patch-$FULLVERSION 289 290 # See if the file exists and find extension 291 findFile $patchdir/${patch} || noFile ${patch} 292 293 # Apply the patch and check all is OK 294 applyPatch $patch || break 295 #echo "#___extraver all done" 296 break 297done 298fi 299 300if [ x$gotac != x ]; then 301 # Out great user wants the -ac patches 302 # They could have done -ac (get latest) or -acxx where xx=version they want 303 if [ $gotac = "-ac" ]; then 304 # They want the latest version 305 HIGHESTPATCH=0 306 for PATCHNAMES in $patchdir/patch-${CURRENTFULLVERSION}-ac*\.* 307 do 308 ACVALUE=`echo $PATCHNAMES | sed -e 's/^.*patch-[0-9.]*-ac\([0-9]*\).*/\1/'` 309 # Check it is actually a recognised patch type 310 findFile $patchdir/patch-${CURRENTFULLVERSION}-ac${ACVALUE} || break 311 312 if [ $ACVALUE -gt $HIGHESTPATCH ]; then 313 HIGHESTPATCH=$ACVALUE 314 fi 315 done 316 317 if [ $HIGHESTPATCH -ne 0 ]; then 318 findFile $patchdir/patch-${CURRENTFULLVERSION}-ac${HIGHESTPATCH} || break 319 applyPatch patch-${CURRENTFULLVERSION}-ac${HIGHESTPATCH} 320 else 321 echo "No -ac patches found" 322 fi 323 else 324 # They want an exact version 325 findFile $patchdir/patch-${CURRENTFULLVERSION}${gotac} || { 326 echo "Sorry, I couldn't find the $gotac patch for $CURRENTFULLVERSION. Hohum." 327 exit 1 328 } 329 applyPatch patch-${CURRENTFULLVERSION}${gotac} 330 fi 331fi 332