Root/scripts/coccicheck

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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