Hi,
On Thu, Nov 01, 2007 at 08:24:57AM -0700, Randy Dunlap wrote:
OK, next iteration (v2).
Make the patch-kernel shell script sufficiently compatible with POSIX shells.
Changes since v1:
- don't actually change string quoting
- prepend ./ at mktemp step already
- remove added superfluous spaces in arithmetic expression
- don't remove double braces in STOPSUBLEVEL evaluation,
since these are integer values to be compared
Full ChangeLog:
- replaced non-standard "==" by standard "="
- replaced non-standard "source" statement by POSIX "dot" statement
- POSIX shell local file lookup needs ./ prepended, thus have mktemp
use this from the beginning and comment it properly
- replace non-standard bash string parsing by sed expression
(is the sed syntax ok? correct? strict enough?)
- added missing $ signs to shell variable names
About the missing $ signs:
http://www.opengroup.org/onlinepubs/009695399/utilities/xcu_chap02.html#tag_02_14
says:
"If the shell variable x contains a value that forms a valid integer
constant, then the arithmetic expansions
"$((x))" and "$(($x))" shall return the same value."
Hmm, well, seems dash doesn't... (syntax error).
Thus I still needed to add the $ signs despite opengroup.org specifying
it differently.
Updated version verified again to now work with both bash and dash
on Debian stable.
Patch intended for inclusion in -mm, once it has survived some reviews.
Thanks.
Signed-off-by: Andreas Mohr <andi@lisas.de>
--- linux-2.6.23/scripts/patch-kernel.orig 2007-11-01 22:51:34.000000000 +0100
+++ linux-2.6.23/scripts/patch-kernel 2007-11-01 22:10:14.000000000 +0100
@@ -65,7 +65,7 @@
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 @@
}
# set current VERSION, PATCHLEVEL, SUBLEVEL, EXTRAVERSION
-TMPFILE=`mktemp .tmpver.XXXXXX` || { echo "cannot make temp file" ; exit 1; }
+# sourcing $TMPFILE.1 below needs lookup in local directory in a POSIX shell,
+# thus prepend ./ to mktemp argument
+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
@@ -202,13 +204,7 @@
EXTRAVER=
if [ x$EXTRAVERSION != "x" ]
then
- if [ ${EXTRAVERSION:0:1} == "." ]; then
- EXTRAVER=${EXTRAVERSION:1}
- else
- EXTRAVER=$EXTRAVERSION
- fi
- EXTRAVER=${EXTRAVER%%[[:punct:]]*}
- #echo "$PNAME: changing EXTRAVERSION from $EXTRAVERSION to $EXTRAVER"
+ EXTRAVER=`echo $EXTRAVERSION|sed -s 's/^[\.]\?\([^[:punct:]]*\).*/\1/'`
fi
#echo "stopvers=$stopvers"
@@ -251,16 +247,16 @@
do
CURRENTFULLVERSION="$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 +293,7 @@
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*\.*
-
