#!/bin/sh

  # SPDX-License-Identifier: GPL-2.0

  #
  # A depmod wrapper used by the toplevel Makefile

  if test $# -ne 3; then
  	echo "Usage: $0 /sbin/depmod <kernelrelease> <symbolprefix>" >&2

  	exit 1
  fi
  DEPMOD=$1
  KERNELRELEASE=$2

  SYMBOL_PREFIX=$3

  if ! test -r System.map ; then

  	exit 0
  fi

  if [ -z $(command -v $DEPMOD) ]; then

  	echo "Warning: 'make modules_install' requires $DEPMOD. Please install it." >&2

  	echo "This is probably in the kmod package." >&2

  	exit 0

  fi

  # older versions of depmod don't support -P <symbol-prefix>
  # support was added in module-init-tools 3.13
  if test -n "$SYMBOL_PREFIX"; then
  	release=$("$DEPMOD" --version)
  	package=$(echo "$release" | cut -d' ' -f 1)
  	if test "$package" = "module-init-tools"; then
  		version=$(echo "$release" | cut -d' ' -f 2)
  		later=$(printf '%s
  ' "$version" "3.13" | sort -V | tail -n 1)
  		if test "$later" != "$version"; then
  			# module-init-tools < 3.13, drop the symbol prefix
  			SYMBOL_PREFIX=""
  		fi
  	fi
  	if test -n "$SYMBOL_PREFIX"; then
  		SYMBOL_PREFIX="-P $SYMBOL_PREFIX"
  	fi
  fi

  # older versions of depmod require the version string to start with three
  # numbers, so we cheat with a symlink here
  depmod_hack_needed=true

  tmp_dir=$(mktemp -d ${TMPDIR:-/tmp}/depmod.XXXXXX)
  mkdir -p "$tmp_dir/lib/modules/$KERNELRELEASE"
  if "$DEPMOD" -b "$tmp_dir" $KERNELRELEASE 2>/dev/null; then
  	if test -e "$tmp_dir/lib/modules/$KERNELRELEASE/modules.dep" -o \
  		-e "$tmp_dir/lib/modules/$KERNELRELEASE/modules.dep.bin"; then

  		depmod_hack_needed=false
  	fi
  fi

  rm -rf "$tmp_dir"

  if $depmod_hack_needed; then
  	symlink="$INSTALL_MOD_PATH/lib/modules/99.98.$KERNELRELEASE"
  	ln -s "$KERNELRELEASE" "$symlink"
  	KERNELRELEASE=99.98.$KERNELRELEASE
  fi

  set -- -ae -F System.map
  if test -n "$INSTALL_MOD_PATH"; then
  	set -- "$@" -b "$INSTALL_MOD_PATH"
  fi

  "$DEPMOD" "$@" "$KERNELRELEASE" $SYMBOL_PREFIX

  ret=$?
  
  if $depmod_hack_needed; then
  	rm -f "$symlink"
  fi
  
  exit $ret