hack.sh

#!/bin/sh -efu

. shell-error

SYSFS_PATH="/sys"
BASE_DIR="/"
KERNEL_SRC_DIR=/home/legion/scm/kernel/linux-release

find_modules()
{
	:>/tmp/modules
	find -P "$SYSFS_PATH" \
		-name 'uevent' \
		-exec grep '^MODALIAS=' '{}' '+' \
		2>/dev/null |
	while
		IFS='
' read -r event
	do
		sysfs_file="${event%%:MODALIAS=*}"
		alias="${event##*:MODALIAS=}"

		found=1
		names="$(/sbin/modinfo -b "$BASE_DIR" -n "$alias" 2>/dev/null)" ||
			found=''

		printf 'PATH=%s\n' "$sysfs_file"
		printf 'MODALIAS=%s\n' "$alias"
		if [ -n  "$found" ]; then
			for n in $names; do
				printf 'MODULE=%s\n' "$n"
				printf '%s\n' "$n" >>/tmp/modules
			done
		else
			printf 'NOTFOUND\n'
		fi
		printf '\n'
	done
	sort -uo /tmp/modules /tmp/modules
}

find_modules

modules_config()
{
	while read -r module_path; do
		path="${module_path#$BASE_DIR}"

		if [ -n "${path##/lib/modules/*}" ]; then
			message "unexpected modules path: $module_path"
			continue
		fi
		path="${path#/lib/modules/*/}"

		if [ -n "${path##kernel/*}" ]; then
			message "extra kernel modules not supported"
			continue
		fi

		path="${path#kernel/}"

		modname="${path##*/}"
		modname="${modname%.ko*}"

		path="${path%/*}"

		printf '%s:' "$modname"
		sed -n \
			-e "s/^obj-\$(\(CONFIG_.*\))[[:space:]]*[+:]\?=[[:space:]]*$modname\.o[[:space:]]*$/\1/p" \
			"$KERNEL_SRC_DIR/$path/Makefile"

	done < /tmp/modules
}

modules_config