scripts/nsdeps

   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_REQ_VERSION_NUM=$(echo $SPATCH_REQ_VERSION | ${DIR}/scripts/ld-version.sh)
  16 SPATCH_VERSION=$($SPATCH --version | head -1 | awk '{print $3}')
  17 SPATCH_VERSION_NUM=$(echo $SPATCH_VERSION | ${DIR}/scripts/ld-version.sh)
  18
  19 if [ "$SPATCH_VERSION_NUM" -lt "$SPATCH_REQ_VERSION_NUM" ] ; then
  20         echo "spatch needs to be version $SPATCH_REQ_VERSION or higher"
  21         exit 1
  22 fi
  23
  24 if [ "$KBUILD_EXTMOD" ]; then
  25         src_prefix=
  26 else
  27         src_prefix=$srctree/
  28 fi
  29
  30 generate_deps_for_ns() {
  31         $SPATCH --very-quiet --in-place --sp-file \
  32                 $srctree/scripts/coccinelle/misc/add_namespace.cocci -D ns=$1 $2
  33 }
  34
  35 generate_deps() {
  36         local mod=${1%.ko:}
  37         shift
  38         local namespaces="$*"
  39         local mod_source_files="`cat $mod.mod | sed -n 1p                      \
  40                                               | sed -e 's/\.o/\.c/g'           \
  41                                               | sed "s|[^ ]* *|${src_prefix}&|g"`"
  42         for ns in $namespaces; do
  43                 echo "Adding namespace $ns to module $mod.ko."
  44                 generate_deps_for_ns $ns "$mod_source_files"
  45                 # sort the imports
  46                 for source_file in $mod_source_files; do
  47                         sed '/MODULE_IMPORT_NS/Q' $source_file > ${source_file}.tmp
  48                         offset=$(wc -l ${source_file}.tmp | awk '{print $1;}')
  49                         cat $source_file | grep MODULE_IMPORT_NS | LANG=C sort -u >> ${source_file}.tmp
  50                         tail -n +$((offset +1)) ${source_file} | grep -v MODULE_IMPORT_NS >> ${source_file}.tmp
  51                         if ! diff -q ${source_file} ${source_file}.tmp; then
  52                                 mv ${source_file}.tmp ${source_file}
  53                         else
  54                                 rm ${source_file}.tmp
  55                         fi
  56                 done
  57         done
  58 }
  59
  60 while read line
  61 do
  62         generate_deps $line
  63 done < $MODULES_NSDEPS