first commit

1 files changed, 141 insertions, 0 deletions

diff --git a/scripts/coccicheck b/scripts/coccicheck
new file mode 100755
index 000000000..06fcb3333
--- /dev/null
+++ b/scripts/coccicheck
@@ -0,0 +1,141 @@
+#!/bin/bash
+
+SPATCH="`which ${SPATCH:=spatch}`"
+
+# The verbosity may be set by the environmental parameter V=
+# as for example with 'make V=1 coccicheck'
+
+if [ -n "$V" -a "$V" != "0" ]; then
+	VERBOSE=1
+else
+	VERBOSE=0
+fi
+
+FLAGS="$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 "chain" mode.'
+	echo 'All available modes will be tried (in that order): patch, report, context, org'
+	echo 'You can specify the mode with "make coccicheck MODE=<mode>"'
+    fi
+    MODE="chain"
+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() {
+	if [ $VERBOSE -ne 0 ] ; then
+		echo "Running: $@"
+	fi
+	eval $@
+}
+
+
+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 -sp_file $COCCI $OPT $OPTIONS               || \
+	run_cmd $SPATCH -D report  \
+		$FLAGS -sp_file $COCCI $OPT $OPTIONS -no_show_diff || \
+	run_cmd $SPATCH -D context \
+		$FLAGS -sp_file $COCCI $OPT $OPTIONS               || \
+	run_cmd $SPATCH -D org     \
+		$FLAGS -sp_file $COCCI $OPT $OPTIONS -no_show_diff || exit 1
+    elif [ "$MODE" = "rep+ctxt" ] ; then
+	run_cmd $SPATCH -D report  \
+		$FLAGS -sp_file $COCCI $OPT $OPTIONS -no_show_diff && \
+	run_cmd $SPATCH -D context \
+		$FLAGS -sp_file $COCCI $OPT $OPTIONS || exit 1
+    else
+	run_cmd $SPATCH -D $MODE   $FLAGS -sp_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