scripts/depmod.sh

   1 #!/bin/sh
   2 # SPDX-License-Identifier: GPL-2.0
   3 #
   4 # A depmod wrapper used by the toplevel Makefile
   5
   6 if test $# -ne 2; then
   7         echo "Usage: $0 /sbin/depmod <kernelrelease>" >&2
   8         exit 1
   9 fi
  10 DEPMOD=$1
  11 KERNELRELEASE=$2
  12
  13 if ! test -r System.map ; then
  14         exit 0
  15 fi
  16
  17 if [ -z $(command -v $DEPMOD) ]; then
  18         echo "'make modules_install' requires $DEPMOD. Please install it." >&2
  19         echo "This is probably in the kmod package." >&2
  20         exit 1
  21 fi
  22
  23 # older versions of depmod require the version string to start with three
  24 # numbers, so we cheat with a symlink here
  25 depmod_hack_needed=true
  26 tmp_dir=$(mktemp -d ${TMPDIR:-/tmp}/depmod.XXXXXX)
  27 mkdir -p "$tmp_dir/lib/modules/$KERNELRELEASE"
  28 if "$DEPMOD" -b "$tmp_dir" $KERNELRELEASE 2>/dev/null; then
  29         if test -e "$tmp_dir/lib/modules/$KERNELRELEASE/modules.dep" -o \
  30                 -e "$tmp_dir/lib/modules/$KERNELRELEASE/modules.dep.bin"; then
  31                 depmod_hack_needed=false
  32         fi
  33 fi
  34 rm -rf "$tmp_dir"
  35 if $depmod_hack_needed; then
  36         symlink="$INSTALL_MOD_PATH/lib/modules/99.98.$KERNELRELEASE"
  37         ln -s "$KERNELRELEASE" "$symlink"
  38         KERNELRELEASE=99.98.$KERNELRELEASE
  39 fi
  40
  41 set -- -ae -F System.map
  42 if test -n "$INSTALL_MOD_PATH"; then
  43         set -- "$@" -b "$INSTALL_MOD_PATH"
  44 fi
  45 "$DEPMOD" "$@" "$KERNELRELEASE"
  46 ret=$?
  47
  48 if $depmod_hack_needed; then
  49         rm -f "$symlink"
  50 fi
  51
  52 exit $ret