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         echo "Warning: modules_install: missing 'System.map' file. Skipping depmod." >&2
  15         exit 0
  16 fi
  17
  18 if [ -z $(command -v $DEPMOD) ]; then
  19         echo "Warning: 'make modules_install' requires $DEPMOD. Please install it." >&2
  20         echo "This is probably in the kmod package." >&2
  21         exit 0
  22 fi
  23
  24 # older versions of depmod require the version string to start with three
  25 # numbers, so we cheat with a symlink here
  26 depmod_hack_needed=true
  27 tmp_dir=$(mktemp -d ${TMPDIR:-/tmp}/depmod.XXXXXX)
  28 mkdir -p "$tmp_dir/lib/modules/$KERNELRELEASE"
  29 if "$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/$KERNELRELEASE/modules.dep.bin"; then
  32                 depmod_hack_needed=false
  33         fi
  34 fi
  35 rm -rf "$tmp_dir"
  36 if $depmod_hack_needed; then
  37         symlink="$INSTALL_MOD_PATH/lib/modules/99.98.$KERNELRELEASE"
  38         ln -s "$KERNELRELEASE" "$symlink"
  39         KERNELRELEASE=99.98.$KERNELRELEASE
  40 fi
  41
  42 set -- -ae -F System.map
  43 if test -n "$INSTALL_MOD_PATH"; then
  44         set -- "$@" -b "$INSTALL_MOD_PATH"
  45 fi
  46 "$DEPMOD" "$@" "$KERNELRELEASE"
  47 ret=$?
  48
  49 if $depmod_hack_needed; then
  50         rm -f "$symlink"
  51 fi
  52
  53 exit $ret