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#!/bin/bash
#
# This script requires at least spatch
# version 1.0.0-rc11.
#
SPATCH="`which ${SPATCH:=spatch}`"
trap kill_running SIGTERM SIGINT
declare -a SPATCH_PID
# The verbosity may be set by the environmental parameter V=
# as for example with 'make V=1 coccicheck'
if [ -n "$V" -a "$V" != "0" ]; then
VERBOSE="$V"
else
VERBOSE=0
fi
if [ -z "$J" ]; then
NPROC=$(getconf _NPROCESSORS_ONLN)
else
NPROC="$J"
fi
FLAGS="$SPFLAGS --very-quiet"
# spatch only allows include directories with the syntax "-I include"
# while gcc also allows "-Iinclude" and "-include include"
COCCIINCLUDE=${LINUXINCLUDE//-I/-I }
COCCIINCLUDE=${COCCIINCLUDE//-include/-I}
if [ "$C" = "1" -o "$C" = "2" ]; then
ONLINE=1
# Take only the last argument, which is the C file to test
shift $(( $# - 1 ))
OPTIONS="$COCCIINCLUDE $1"
else
ONLINE=0
if [ "$KBUILD_EXTMOD" = "" ] ; then
OPTIONS="--dir $srctree $COCCIINCLUDE"
else
OPTIONS="--dir $KBUILD_EXTMOD $COCCIINCLUDE"
fi
fi
if [ "$KBUILD_EXTMOD" != "" ] ; then
OPTIONS="--patch $srctree $OPTIONS"
fi
if [ ! -x "$SPATCH" ]; then
echo 'spatch is part of the Coccinelle project and is available at http://coccinelle.lip6.fr/'
exit 1
fi
if [ "$MODE" = "" ] ; then
if [ "$ONLINE" = "0" ] ; then
echo 'You have not explicitly specified the mode to use. Using default "report" mode.'
echo 'Available modes are the following: patch, report, context, org'
echo 'You can specify the mode with "make coccicheck MODE=<mode>"'
echo 'Note however that some modes are not implemented by some semantic patches.'
fi
MODE="report"
fi
if [ "$MODE" = "chain" ] ; then
if [ "$ONLINE" = "0" ] ; then
echo 'You have selected the "chain" mode.'
echo 'All available modes will be tried (in that order): patch, report, context, org'
fi
elif [ "$MODE" = "report" -o "$MODE" = "org" ] ; then
FLAGS="$FLAGS --no-show-diff"
fi
if [ "$ONLINE" = "0" ] ; then
echo ''
echo 'Please check for false positives in the output before submitting a patch.'
echo 'When using "patch" mode, carefully review the patch before submitting it.'
echo ''
fi
run_cmd() {
local i
if [ $VERBOSE -ne 0 ] ; then
echo "Running ($NPROC in parallel): $@"
fi
for i in $(seq 0 $(( NPROC - 1)) ); do
eval "$@ --max $NPROC --index $i &"
SPATCH_PID[$i]=$!
if [ $VERBOSE -eq 2 ] ; then
echo "${SPATCH_PID[$i]} running"
fi
done
wait
}
kill_running() {
for i in $(seq $(( NPROC - 1 )) ); do
if [ $VERBOSE -eq 2 ] ; then
echo "Killing ${SPATCH_PID[$i]}"
fi
kill ${SPATCH_PID[$i]} 2>/dev/null
done
}
coccinelle () {
COCCI="$1"
OPT=`grep "Option" $COCCI | cut -d':' -f2`
# The option '--parse-cocci' can be used to syntactically check the SmPL files.
#
# $SPATCH -D $MODE $FLAGS -parse_cocci $COCCI $OPT > /dev/null
if [ $VERBOSE -ne 0 -a $ONLINE -eq 0 ] ; then
FILE=`echo $COCCI | sed "s|$srctree/||"`
echo "Processing `basename $COCCI`"
echo "with option(s) \"$OPT\""
echo ''
echo 'Message example to submit a patch:'
sed -ne 's|^///||p' $COCCI
if [ "$MODE" = "patch" ] ; then
echo ' The semantic patch that makes this change is available'
elif [ "$MODE" = "report" ] ; then
echo ' The semantic patch that makes this report is available'
elif [ "$MODE" = "context" ] ; then
echo ' The semantic patch that spots this code is available'
elif [ "$MODE" = "org" ] ; then
echo ' The semantic patch that makes this Org report is available'
else
echo ' The semantic patch that makes this output is available'
fi
echo " in $FILE."
echo ''
echo ' More information about semantic patching is available at'
echo ' http://coccinelle.lip6.fr/'
echo ''
if [ "`sed -ne 's|^//#||p' $COCCI`" ] ; then
echo 'Semantic patch information:'
sed -ne 's|^//#||p' $COCCI
echo ''
fi
fi
if [ "$MODE" = "chain" ] ; then
run_cmd $SPATCH -D patch \
$FLAGS --cocci-file $COCCI $OPT $OPTIONS || \
run_cmd $SPATCH -D report \
$FLAGS --cocci-file $COCCI $OPT $OPTIONS --no-show-diff || \
run_cmd $SPATCH -D context \
$FLAGS --cocci-file $COCCI $OPT $OPTIONS || \
run_cmd $SPATCH -D org \
$FLAGS --cocci-file $COCCI $OPT $OPTIONS --no-show-diff || exit 1
elif [ "$MODE" = "rep+ctxt" ] ; then
run_cmd $SPATCH -D report \
$FLAGS --cocci-file $COCCI $OPT $OPTIONS --no-show-diff && \
run_cmd $SPATCH -D context \
$FLAGS --cocci-file $COCCI $OPT $OPTIONS || exit 1
else
run_cmd $SPATCH -D $MODE $FLAGS --cocci-file $COCCI $OPT $OPTIONS || exit 1
fi
}
if [ "$COCCI" = "" ] ; then
for f in `find $srctree/scripts/coccinelle/ -name '*.cocci' -type f | sort`; do
coccinelle $f
done
else
coccinelle $COCCI
fi
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