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.
6SPATCH_REQ_VERSION="1.0.4"
7
8DIR="$(dirname $(readlink -f $0))/.."
9SPATCH="`which ${SPATCH:=spatch}`"
10if [ ! -x "$SPATCH" ]; then
11	echo 'spatch is part of the Coccinelle project and is available at http://coccinelle.lip6.fr/'
12	exit 1
13fi
14
15SPATCH_VERSION=$($SPATCH --version | head -1 | awk '{print $3}')
16
17if ! { echo "$SPATCH_REQ_VERSION"; echo "$SPATCH_VERSION"; } | sort -CV ; then
18	echo "spatch needs to be version $SPATCH_REQ_VERSION or higher"
19	exit 1
20fi
21
22if [ "$KBUILD_EXTMOD" ]; then
23	src_prefix=
24else
25	src_prefix=$srctree/
26fi
27
28generate_deps_for_ns() {
29	$SPATCH --very-quiet --in-place --sp-file \
30		$srctree/scripts/coccinelle/misc/add_namespace.cocci -D nsdeps -D ns=$1 $2
31}
32
33generate_deps() {
34	local mod=${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
57while read line
58do
59	generate_deps $line
60done < $MODULES_NSDEPS
61