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Commit 22d6a6a0 authored by Andreas Mohr's avatar Andreas Mohr Committed by Sam Ravnborg
Browse files

kbuild: eradicate bashisms in scripts/patch-kernel 



Make the patch-kernel shell script sufficiently compatible with POSIX
shells, i.e., remove bashisms from scripts/patch-kernel.
This means that it now also works on dash 0.5.3-5
and still works on bash 3.1dfsg-8.

Full changelog:
- replaced non-standard "==" by standard "="
- replaced non-standard "source" statement by POSIX "dot" command
- use leading ./ on mktemp filename to force the tempfile to a local
  directory, so that the search path is not used
- replace bash syntax to remove leading dot by similar POSIX syntax
- added missing (optional/not required) $ signs to shell variable names

Signed-off-by: default avatarAndreas Mohr <andi@lisas.de>
Acked-by: default avatarRandy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: default avatarSam Ravnborg <sam@ravnborg.org>
parent 7491a76b

scripts/patch-kernel

+10 −12
Original line number Diff line number Diff line
@@ -65,7 +65,7 @@ sourcedir=${1-/usr/src/linux} 
patchdir=${2-.}

stopvers=${3-default}



if [ "$1" == -h -o "$1" == --help -o ! -r "$sourcedir/Makefile" ]; then

if [ "$1" = -h -o "$1" = --help -o ! -r "$sourcedir/Makefile" ]; then

cat << USAGE

usage: $PNAME [-h] [ sourcedir [ patchdir [ stopversion ] [ -acxx ] ] ]

  source directory defaults to /usr/src/linux,
@@ -182,10 +182,12 @@ reversePatch () { 
}



# set current VERSION, PATCHLEVEL, SUBLEVEL, EXTRAVERSION

TMPFILE=`mktemp .tmpver.XXXXXX` || { echo "cannot make temp file" ; exit 1; }

# force $TMPFILEs below to be in local directory: a slash character prevents

# the dot command from using the search path.

TMPFILE=`mktemp ./.tmpver.XXXXXX` || { echo "cannot make temp file" ; exit 1; }

grep -E "^(VERSION|PATCHLEVEL|SUBLEVEL|EXTRAVERSION)" $sourcedir/Makefile > $TMPFILE

tr -d [:blank:] < $TMPFILE > $TMPFILE.1

source $TMPFILE.1

. $TMPFILE.1

rm -f $TMPFILE*

if [ -z "$VERSION" -o -z "$PATCHLEVEL" -o -z "$SUBLEVEL" ]

then
@@ -202,11 +204,7 @@ echo "Current kernel version is $VERSION.$PATCHLEVEL.$SUBLEVEL${EXTRAVERSION} ($ 
EXTRAVER=

if [ x$EXTRAVERSION != "x" ]

then

	if [ ${EXTRAVERSION:0:1} == "." ]; then

		EXTRAVER=${EXTRAVERSION:1}

	else

		EXTRAVER=$EXTRAVERSION

	fi

	EXTRAVER=${EXTRAVERSION#.}

	EXTRAVER=${EXTRAVER%%[[:punct:]]*}

	#echo "$PNAME: changing EXTRAVERSION from $EXTRAVERSION to $EXTRAVER"

fi
@@ -251,16 +249,16 @@ while : # incrementing SUBLEVEL (s in v.p.s) 
do

    CURRENTFULLVERSION="$VERSION.$PATCHLEVEL.$SUBLEVEL"

    EXTRAVER=

    if [ $stopvers == $CURRENTFULLVERSION ]; then

    if [ $stopvers = $CURRENTFULLVERSION ]; then

        echo "Stopping at $CURRENTFULLVERSION base as requested."

        break

    fi



    SUBLEVEL=$((SUBLEVEL + 1))

    SUBLEVEL=$(($SUBLEVEL + 1))

    FULLVERSION="$VERSION.$PATCHLEVEL.$SUBLEVEL"

    #echo "#___ trying $FULLVERSION ___"



    if [ $((SUBLEVEL)) -gt $((STOPSUBLEVEL)) ]; then

    if [ $(($SUBLEVEL)) -gt $(($STOPSUBLEVEL)) ]; then

	echo "Stopping since sublevel ($SUBLEVEL) is beyond stop-sublevel ($STOPSUBLEVEL)"

	exit 1

    fi
@@ -297,7 +295,7 @@ fi 
if [ x$gotac != x ]; then

  # Out great user wants the -ac patches

	# They could have done -ac (get latest) or -acxx where xx=version they want

	if [ $gotac == "-ac" ]; then

	if [ $gotac = "-ac" ]; then

	  # They want the latest version

		HIGHESTPATCH=0

		for PATCHNAMES in $patchdir/patch-${CURRENTFULLVERSION}-ac*\.*