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 generate_deps_for_ns() {
  25         $SPATCH --very-quiet --in-place --sp-file \
  26                 $srctree/scripts/coccinelle/misc/add_namespace.cocci -D ns=$1 $2
  27 }
  28
  29 generate_deps() {
  30         local mod_name=`basename $@ .ko`
  31         local mod_file=`echo $@ | sed -e 's/\.ko/\.mod/'`
  32         local ns_deps_file=`echo $@ | sed -e 's/\.ko/\.ns_deps/'`
  33         if [ ! -f "$ns_deps_file" ]; then return; fi
  34         local mod_source_files=`cat $mod_file | sed -n 1p                      \
  35                                               | sed -e 's/\.o/\.c/g'           \
  36                                               | sed "s/[^ ]* */${srctree}\/&/g"`
  37         for ns in `cat $ns_deps_file`; do
  38                 echo "Adding namespace $ns to module $mod_name (if needed)."
  39                 generate_deps_for_ns $ns $mod_source_files
  40                 # sort the imports
  41                 for source_file in $mod_source_files; do
  42                         sed '/MODULE_IMPORT_NS/Q' $source_file > ${source_file}.tmp
  43                         offset=$(wc -l ${source_file}.tmp | awk '{print $1;}')
  44                         cat $source_file | grep MODULE_IMPORT_NS | LANG=C sort -u >> ${source_file}.tmp
  45                         tail -n +$((offset +1)) ${source_file} | grep -v MODULE_IMPORT_NS >> ${source_file}.tmp
  46                         if ! diff -q ${source_file} ${source_file}.tmp; then
  47                                 mv ${source_file}.tmp ${source_file}
  48                         else
  49                                 rm ${source_file}.tmp
  50                         fi
  51                 done
  52         done
  53 }
  54
  55 for f in `cat $objtree/modules.order`; do
  56         generate_deps $f
  57 done
  58