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Diffstat (limited to 'kernel/scripts/coccicheck')
| -rwxr-xr-x | kernel/scripts/coccicheck | 179 |
1 files changed, 179 insertions, 0 deletions
diff --git a/kernel/scripts/coccicheck b/kernel/scripts/coccicheck new file mode 100755 index 000000000..bbf901afb --- /dev/null +++ b/kernel/scripts/coccicheck @@ -0,0 +1,179 @@ +#!/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 |