summaryrefslogtreecommitdiff
path: root/scripts/coccicheck
blob: 06fcb3333247358c29b15f4b222b2f654d0e1465 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
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