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