diff options
| -rwxr-xr-x | scripts/patch-kernel | 131 |
1 files changed, 101 insertions, 30 deletions
diff --git a/scripts/patch-kernel b/scripts/patch-kernel index 43af01075612..f2d47ca9c8fa 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=${1-/usr/src/linux} @@ -54,7 +67,7 @@ stopvers=${3-default} 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 @@ do 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 @@ applyPatch () { 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 > $TMPFILE @@ -160,53 +208,57 @@ then EXTRAVER=$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=/$STOPEXTRA/" else STOPSUBLEVEL=9999 STOPEXTRA=9999 fi -while : # incrementing SUBLEVEL (s in v.p.s) -do - if [ x$EXTRAVER != "x" ]; then +# 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 +else CURRENTFULLVERSION="$VERSION.$PATCHLEVEL.$SUBLEVEL" - fi +fi + +if [ x$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 $SUBLEVEL ]; then +while : # incrementing SUBLEVEL (s in v.p.s) +do + CURRENTFULLVERSION="$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 ($STOPSUBLEVEL)" @@ -214,14 +266,33 @@ do fi patch=patch-$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 |