linux/scripts/coccicheck
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   1#!/bin/sh
   2
   3SPATCH="`which ${SPATCH:=spatch}`"
   4
   5# The verbosity may be set by the environmental parameter V=
   6# as for example with 'make V=1 coccicheck'
   7
   8if [ -n "$V" -a "$V" != "0" ]; then
   9        VERBOSE=1
  10else
  11        VERBOSE=0
  12fi
  13
  14if [ "$C" = "1" -o "$C" = "2" ]; then
  15    ONLINE=1
  16
  17# This requires Coccinelle >= 0.2.3
  18#    FLAGS="-ignore_unknown_options -very_quiet"
  19#    OPTIONS=$*
  20
  21# Workaround for Coccinelle < 0.2.3
  22        FLAGS="-I $srctree/include -very_quiet"
  23        shift $(( $# - 1 ))
  24        OPTIONS=$1
  25else
  26    ONLINE=0
  27    FLAGS="-very_quiet"
  28    if [ "$KBUILD_EXTMOD" = "" ] ; then
  29        OPTIONS="-dir $srctree"
  30    else
  31        OPTIONS="-dir $KBUILD_EXTMOD -patch $srctree -I $srctree/include -I $KBUILD_EXTMOD/include"
  32    fi
  33fi
  34
  35if [ ! -x "$SPATCH" ]; then
  36    echo 'spatch is part of the Coccinelle project and is available at http://coccinelle.lip6.fr/'
  37    exit 1
  38fi
  39
  40if [ "$MODE" = "" ] ; then
  41    if [ "$ONLINE" = "0" ] ; then
  42        echo 'You have not explicitly specified the mode to use. Using default "chain" mode.'
  43        echo 'All available modes will be tried (in that order): patch, report, context, org'
  44        echo 'You can specify the mode with "make coccicheck MODE=<mode>"'
  45    fi
  46    MODE="chain"
  47elif [ "$MODE" = "report" -o "$MODE" = "org" ] ; then
  48    FLAGS="$FLAGS -no_show_diff"
  49fi
  50
  51if [ "$ONLINE" = "0" ] ; then
  52    echo ''
  53    echo 'Please check for false positives in the output before submitting a patch.'
  54    echo 'When using "patch" mode, carefully review the patch before submitting it.'
  55    echo ''
  56fi
  57
  58run_cmd() {
  59        if [ $VERBOSE -ne 0 ] ; then
  60                echo "Running: $@"
  61        fi
  62        eval $@
  63}
  64
  65
  66coccinelle () {
  67    COCCI="$1"
  68
  69    OPT=`grep "Option" $COCCI | cut -d':' -f2`
  70
  71#   The option '-parse_cocci' can be used to syntactically check the SmPL files.
  72#
  73#    $SPATCH -D $MODE $FLAGS -parse_cocci $COCCI $OPT > /dev/null
  74
  75    if [ $VERBOSE -ne 0 ] ; then
  76
  77        FILE=`echo $COCCI | sed "s|$srctree/||"`
  78
  79        echo "Processing `basename $COCCI`"
  80        echo "with option(s) \"$OPT\""
  81        echo ''
  82        echo 'Message example to submit a patch:'
  83
  84        sed -ne 's|^///||p' $COCCI
  85
  86        if [ "$MODE" = "patch" ] ; then
  87            echo ' The semantic patch that makes this change is available'
  88        elif [ "$MODE" = "report" ] ; then
  89            echo ' The semantic patch that makes this report is available'
  90        elif [ "$MODE" = "context" ] ; then
  91            echo ' The semantic patch that spots this code is available'
  92        elif [ "$MODE" = "org" ] ; then
  93            echo ' The semantic patch that makes this Org report is available'
  94        else
  95            echo ' The semantic patch that makes this output is available'
  96        fi
  97        echo " in $FILE."
  98        echo ''
  99        echo ' More information about semantic patching is available at'
 100        echo ' http://coccinelle.lip6.fr/'
 101        echo ''
 102
 103        if [ "`sed -ne 's|^//#||p' $COCCI`" ] ; then
 104            echo 'Semantic patch information:'
 105            sed -ne 's|^//#||p' $COCCI
 106            echo ''
 107        fi
 108    fi
 109
 110    if [ "$MODE" = "chain" ] ; then
 111        run_cmd $SPATCH -D patch   \
 112                $FLAGS -sp_file $COCCI $OPT $OPTIONS               || \
 113        run_cmd $SPATCH -D report  \
 114                $FLAGS -sp_file $COCCI $OPT $OPTIONS -no_show_diff || \
 115        run_cmd $SPATCH -D context \
 116                $FLAGS -sp_file $COCCI $OPT $OPTIONS               || \
 117        run_cmd $SPATCH -D org     \
 118                $FLAGS -sp_file $COCCI $OPT $OPTIONS -no_show_diff || exit 1
 119    elif [ "$MODE" = "rep+ctxt" ] ; then
 120        run_cmd $SPATCH -D report  \
 121                $FLAGS -sp_file $COCCI $OPT $OPTIONS -no_show_diff && \
 122        run_cmd $SPATCH -D context \
 123                $FLAGS -sp_file $COCCI $OPT $OPTIONS || exit 1
 124    else
 125        run_cmd $SPATCH -D $MODE   $FLAGS -sp_file $COCCI $OPT $OPTIONS || exit 1
 126    fi
 127
 128}
 129
 130if [ "$COCCI" = "" ] ; then
 131    for f in `find $srctree/scripts/coccinelle/ -name '*.cocci' -type f | sort`; do
 132        coccinelle $f
 133    done
 134else
 135    coccinelle $COCCI
 136fi
 137
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