LXR linux/scripts/depmod.sh

   1#!/bin/sh
   2# SPDX-License-Identifier: GPL-2.0
   3#
   4# A depmod wrapper used by the toplevel Makefile
   5
   6if test $# -ne 2; then
   7        echo "Usage: $0 /sbin/depmod <kernelrelease>" >&2
   8        exit 1
   9fi
  10DEPMOD=$1
  11KERNELRELEASE=$2
  12
  13if ! test -r System.map ; then
  14        echo "Warning: modules_install: missing 'System.map' file. Skipping depmod." >&2
  15        exit 0
  16fi
  17
  18if [ -z $(command -v $DEPMOD) ]; then
  19        echo "Warning: 'make modules_install' requires $DEPMOD. Please install it." >&2
  20        echo "This is probably in the kmod package." >&2
  21        exit 0
  22fi
  23
  24# older versions of depmod require the version string to start with three
  25# numbers, so we cheat with a symlink here
  26depmod_hack_needed=true
  27tmp_dir=$(mktemp -d ${TMPDIR:-/tmp}/depmod.XXXXXX)
  28mkdir -p "$tmp_dir/lib/modules/$KERNELRELEASE"
  29if "$DEPMOD" -b "$tmp_dir" $KERNELRELEASE 2>/dev/null; then
  30        if test -e "$tmp_dir/lib/modules/$KERNELRELEASE/modules.dep" -o \
  31                -e "$tmp_dir/lib/modules/$KERNELRELEASE/modules.dep.bin"; then
  32                depmod_hack_needed=false
  33        fi
  34fi
  35rm -rf "$tmp_dir"
  36if $depmod_hack_needed; then
  37        symlink="$INSTALL_MOD_PATH/lib/modules/99.98.$KERNELRELEASE"
  38        ln -s "$KERNELRELEASE" "$symlink"
  39        KERNELRELEASE=99.98.$KERNELRELEASE
  40fi
  41
  42set -- -ae -F System.map
  43if test -n "$INSTALL_MOD_PATH"; then
  44        set -- "$@" -b "$INSTALL_MOD_PATH"
  45fi
  46"$DEPMOD" "$@" "$KERNELRELEASE"
  47ret=$?
  48
  49if $depmod_hack_needed; then
  50        rm -f "$symlink"
  51fi
  52
  53exit $ret
  54