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kbuild: eradicate bashisms in scripts/patch-kernel

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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: Andreas Mohr <andi@lisas.de>
Acked-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
This commit is contained in:
Andreas Mohr 2007-11-17 21:51:25 +01:00 committed by Sam Ravnborg
parent 7491a76b23
commit 22d6a6a018
1 changed files with 10 additions and 12 deletions
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22
scripts/patch-kernel
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@ -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*\.*