1 #!/bin/sh
2 # SPDX-License-Identifier: GPL-2.0
3 # Linux kernel symbol namespace import generator
4 #
5 # This script requires a minimum spatch version.
6 SPATCH_REQ_VERSION="1.0.4"
7
8 DIR="$(dirname $(readlink -f $0))/.."
9 SPATCH="`which ${SPATCH:=spatch}`"
10 if [ ! -x "$SPATCH" ]; then
11 echo 'spatch is part of the Coccinelle project and is available at http://coccinelle.lip6.fr/'
12 exit 1
13 fi
14
15 SPATCH_VERSION=$($SPATCH --version | head -1 | awk '{print $3}')
16
17 if ! { echo "$SPATCH_REQ_VERSION"; echo "$SPATCH_VERSION"; } | sort -CV ; then
18 echo "spatch needs to be version $SPATCH_REQ_VERSION or higher"
19 exit 1
20 fi
21
22 if [ "$KBUILD_EXTMOD" ]; then
23 src_prefix=
24 else
25 src_prefix=$srctree/
26 fi
27
28 generate_deps_for_ns() {
29 $SPATCH --very-quiet --in-place --sp-file \
30 $srctree/scripts/coccinelle/misc/add_namespace.cocci -D nsdeps -D ns=$1 $2
31 }
32
33 generate_deps() {
34 local mod=${1%.ko:}
35 shift
36 local namespaces="$*"
37 local mod_source_files=$(sed "s|^\(.*\)\.o$|${src_prefix}\1.c|" $mod.mod)
38
39 for ns in $namespaces; do
40 echo "Adding namespace $ns to module $mod.ko."
41 generate_deps_for_ns $ns "$mod_source_files"
42 # sort the imports
43 for source_file in $mod_source_files; do
44 sed '/MODULE_IMPORT_NS/Q' $source_file > ${source_file}.tmp
45 offset=$(wc -l ${source_file}.tmp | awk '{print $1;}')
46 cat $source_file | grep MODULE_IMPORT_NS | LC_ALL=C sort -u >> ${source_file}.tmp
47 tail -n +$((offset +1)) ${source_file} | grep -v MODULE_IMPORT_NS >> ${source_file}.tmp
48 if ! diff -q ${source_file} ${source_file}.tmp; then
49 mv ${source_file}.tmp ${source_file}
50 else
51 rm ${source_file}.tmp
52 fi
53 done
54 done
55 }
56
57 while read line
58 do
59 generate_deps $line
60 done < $MODULES_NSDEPS
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