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}.zip ]; then 120 ext=".zip" 121 name="zip" 122 uncomp="unzip -d" 123 elif [ -r ${filebase}.Z ]; then 124 ext=".Z" 125 name="uncompress" 126 uncomp="uncompress -c" 127 elif [ -r ${filebase} ]; then 128 ext="" 129 name="plaintext" 130 uncomp="cat" 131 else 132 return 1; 133 fi 134 135 return 0; 136} 137 138# --------------------------------------------------------------------------- 139# Apply a patch and check it goes in cleanly 140# First param is patch name (e.g. patch-2.4.9-ac5) - without path or extension 141 142applyPatch () { 143 echo -n "Applying $1 (${name})... " 144 if $uncomp ${patchdir}/$1${ext} | patch -p1 -s -N -E -d $sourcedir 145 then 146 echo "done." 147 else 148 echo "failed. Clean up yourself." 149 return 1; 150 fi 151 if [ "`find $sourcedir/ '(' -name '*.rej' -o -name '.*.rej' ')' -print`" ] 152 then 153 echo "Aborting. Reject files found." 154 return 1; 155 fi 156 # Remove backup files 157 find $sourcedir/ '(' -name '*.orig' -o -name '.*.orig' ')' -exec rm -f {} \; 158 159 return 0; 160} 161 162# --------------------------------------------------------------------------- 163# arg1 is patch filename 164reversePatch () { 165 echo -n "Reversing $1 (${name}) ... " 166 if $uncomp ${patchdir}/"$1"${ext} | patch -p1 -Rs -N -E -d $sourcedir 167 then 168 echo "done." 169 else 170 echo "failed. Clean it up." 171 exit 1 172 fi 173 if [ "`find $sourcedir/ '(' -name '*.rej' -o -name '.*.rej' ')' -print`" ] 174 then 175 echo "Aborting. Reject files found." 176 return 1 177 fi 178 # Remove backup files 179 find $sourcedir/ '(' -name '*.orig' -o -name '.*.orig' ')' -exec rm -f {} \; 180 181 return 0 182} 183 184# set current VERSION, PATCHLEVEL, SUBLEVEL, EXTRAVERSION 185TMPFILE=`mktemp .tmpver.XXXXXX` || { echo "cannot make temp file" ; exit 1; } 186grep -E "^(VERSION|PATCHLEVEL|SUBLEVEL|EXTRAVERSION)" $sourcedir/Makefile > $TMPFILE 187tr -d [:blank:] < $TMPFILE > $TMPFILE.1 188source $TMPFILE.1 189rm -f $TMPFILE* 190if [ -z "$VERSION" -o -z "$PATCHLEVEL" -o -z "$SUBLEVEL" ] 191then 192 echo "unable to determine current kernel version" >&2 193 exit 1 194fi 195 196NAME=`grep ^NAME $sourcedir/Makefile` 197NAME=${NAME##*=} 198 199echo "Current kernel version is $VERSION.$PATCHLEVEL.$SUBLEVEL${EXTRAVERSION} ($NAME)" 200 201# strip EXTRAVERSION to just a number (drop leading '.' and trailing additions) 202EXTRAVER= 203if [ x$EXTRAVERSION != "x" ] 204then 205 if [ ${EXTRAVERSION:0:1} == "." ]; then 206 EXTRAVER=${EXTRAVERSION:1} 207 else 208 EXTRAVER=$EXTRAVERSION 209 fi 210 EXTRAVER=${EXTRAVER%%[[:punct:]]*} 211 #echo "$PNAME: changing EXTRAVERSION from $EXTRAVERSION to $EXTRAVER" 212fi 213 214#echo "stopvers=$stopvers" 215if [ $stopvers != "default" ]; then 216 STOPSUBLEVEL=`echo $stopvers | cut -d. -f3` 217 STOPEXTRA=`echo $stopvers | cut -d. -f4` 218 #echo "#___STOPSUBLEVEL=/$STOPSUBLEVEL/, STOPEXTRA=/$STOPEXTRA/" 219else 220 STOPSUBLEVEL=9999 221 STOPEXTRA=9999 222fi 223 224# This all assumes a 2.6.x[.y] kernel tree. 225# Don't allow backwards/reverse patching. 226if [ $STOPSUBLEVEL -lt $SUBLEVEL ]; then 227 backwards 228fi 229 230if [ x$EXTRAVER != "x" ]; then 231 CURRENTFULLVERSION="$VERSION.$PATCHLEVEL.$SUBLEVEL.$EXTRAVER" 232else 233 CURRENTFULLVERSION="$VERSION.$PATCHLEVEL.$SUBLEVEL" 234fi 235 236if [ x$EXTRAVER != "x" ]; then 237 echo "backing up to: $VERSION.$PATCHLEVEL.$SUBLEVEL" 238 patch="patch-${CURRENTFULLVERSION}" 239 findFile $patchdir/${patch} || noFile ${patch} 240 reversePatch ${patch} || exit 1 241fi 242 243# now current is 2.6.x, with no EXTRA applied, 244# so update to target SUBLEVEL (2.6.SUBLEVEL) 245# and then to target EXTRAVER (2.6.SUB.EXTRAVER) if requested. 246# If not ending sublevel is specified, it is incremented until 247# no further sublevels are found. 248 249if [ $STOPSUBLEVEL -gt $SUBLEVEL ]; then 250while : # incrementing SUBLEVEL (s in v.p.s) 251do 252 CURRENTFULLVERSION="$VERSION.$PATCHLEVEL.$SUBLEVEL" 253 EXTRAVER= 254 if [ $stopvers == $CURRENTFULLVERSION ]; then 255 echo "Stopping at $CURRENTFULLVERSION base as requested." 256 break 257 fi 258 259 SUBLEVEL=$((SUBLEVEL + 1)) 260 FULLVERSION="$VERSION.$PATCHLEVEL.$SUBLEVEL" 261 #echo "#___ trying $FULLVERSION ___" 262 263 if [ $((SUBLEVEL)) -gt $((STOPSUBLEVEL)) ]; then 264 echo "Stopping since sublevel ($SUBLEVEL) is beyond stop-sublevel ($STOPSUBLEVEL)" 265 exit 1 266 fi 267 268 patch=patch-$FULLVERSION 269 # See if the file exists and find extension 270 findFile $patchdir/${patch} || noFile ${patch} 271 272 # Apply the patch and check all is OK 273 applyPatch $patch || break 274done 275#echo "#___sublevel all done" 276fi 277 278# There is no incremental searching for extraversion... 279if [ "$STOPEXTRA" != "" ]; then 280while : # just to allow break 281do 282# apply STOPEXTRA directly (not incrementally) (x in v.p.s.x) 283 FULLVERSION="$VERSION.$PATCHLEVEL.$SUBLEVEL.$STOPEXTRA" 284 #echo "#... trying $FULLVERSION ..." 285 patch=patch-$FULLVERSION 286 287 # See if the file exists and find extension 288 findFile $patchdir/${patch} || noFile ${patch} 289 290 # Apply the patch and check all is OK 291 applyPatch $patch || break 292 #echo "#___extraver all done" 293 break 294done 295fi 296 297if [ x$gotac != x ]; then 298 # Out great user wants the -ac patches 299 # They could have done -ac (get latest) or -acxx where xx=version they want 300 if [ $gotac == "-ac" ]; then 301 # They want the latest version 302 HIGHESTPATCH=0 303 for PATCHNAMES in $patchdir/patch-${CURRENTFULLVERSION}-ac*\.* 304 do 305 ACVALUE=`echo $PATCHNAMES | sed -e 's/^.*patch-[0-9.]*-ac\([0-9]*\).*/\1/'` 306 # Check it is actually a recognised patch type 307 findFile $patchdir/patch-${CURRENTFULLVERSION}-ac${ACVALUE} || break 308 309 if [ $ACVALUE -gt $HIGHESTPATCH ]; then 310 HIGHESTPATCH=$ACVALUE 311 fi 312 done 313 314 if [ $HIGHESTPATCH -ne 0 ]; then 315 findFile $patchdir/patch-${CURRENTFULLVERSION}-ac${HIGHESTPATCH} || break 316 applyPatch patch-${CURRENTFULLVERSION}-ac${HIGHESTPATCH} 317 else 318 echo "No -ac patches found" 319 fi 320 else 321 # They want an exact version 322 findFile $patchdir/patch-${CURRENTFULLVERSION}${gotac} || { 323 echo "Sorry, I couldn't find the $gotac patch for $CURRENTFULLVERSION. Hohum." 324 exit 1 325 } 326 applyPatch patch-${CURRENTFULLVERSION}${gotac} 327 fi 328fi 329