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=$2
  12
  13if ! test -r System.map ; then
  14        echo "Warning: modules_install: missing 'System.map' file. Skipping depmod." >&2
  15        exit 0
  16fi
  17
  18# legacy behavior: "depmod" in /sbin, no /sbin in PATH
  19PATH="$PATH:/sbin"
  20if [ -z $(command -v $DEPMOD) ]; then
  21        echo "Warning: 'make modules_install' requires $DEPMOD. Please install it." >&2
  22        echo "This is probably in the kmod package." >&2
  23        exit 0
  24fi
  25
  26# older versions of depmod require the version string to start with three
  27# numbers, so we cheat with a symlink here
  28depmod_hack_needed=true
  29tmp_dir=$(mktemp -d ${TMPDIR:-/tmp}/depmod.XXXXXX)
  30mkdir -p "$tmp_dir/lib/modules/$KERNELRELEASE"
  31if "$DEPMOD" -b "$tmp_dir" $KERNELRELEASE 2>/dev/null; then
  32        if test -e "$tmp_dir/lib/modules/$KERNELRELEASE/modules.dep" -o \
  33                -e "$tmp_dir/lib/modules/$KERNELRELEASE/modules.dep.bin"; then
  34                depmod_hack_needed=false
  35        fi
  36fi
  37rm -rf "$tmp_dir"
  38if $depmod_hack_needed; then
  39        symlink="$INSTALL_MOD_PATH/lib/modules/99.98.$KERNELRELEASE"
  40        ln -s "$KERNELRELEASE" "$symlink"
  41        KERNELRELEASE=99.98.$KERNELRELEASE
  42fi
  43
  44set -- -ae -F System.map
  45if test -n "$INSTALL_MOD_PATH"; then
  46        set -- "$@" -b "$INSTALL_MOD_PATH"
  47fi
  48"$DEPMOD" "$@" "$KERNELRELEASE"
  49ret=$?
  50
  51if $depmod_hack_needed; then
  52        rm -f "$symlink"
  53fi
  54
  55exit $ret
  56