Added installation script for acpi-call module

diff --git a/acpi-call-installer/install-acpi-call.sh b/acpi-call-installer/install-acpi-call.sh
new file mode 100755 (executable)
index 0000000..086b262
--- /dev/null
+++ b/acpi-call-installer/install-acpi-call.sh
@@ -0,0 +1,143 @@
+#!/bin/sh
+
+###
+### This script is distributed in the terms of GNU GPL v3.0+
+### (c) Andrew Sichevoi, http://thekondor.net
+###
+### Name: install-acpi-call
+### Description: simple installation script of ``acpi_call`` module.
+### Notes:
+###  1. The script is intended for Debian GNU/Linux
+###  2. The script downloads the latest version of ``acpi_call`` from the home repository and
+###     installs the built module using DKMS.
+###
+### Arguments:
+###  none
+###
+
+SOURCE_DIR=/usr/src
+MODULE_VERSION=42
+MODULE_NAME=acpi_call
+
+DIST_DIR=${MODULE_NAME}-${MODULE_VERSION}
+FULL_DIST_DIR_PATH=${SOURCE_DIR}/${DIST_DIR}
+
+REQUIRED_PACKAGES="dkms build-essential git"
+SOURCE_REPOSITORY="https://github.com/peberlein/acpi_call"
+
+_error()
+{
+  echo "Error: $@"
+  exit 1
+}
+
+_check_permissions()
+{
+  if [ "root" != $(whoami) ]; then
+    _error "Must be run with root privileges"
+  fi
+}
+
+__check_package_availability()
+{
+  /usr/bin/dpkg -s ${1} 2>/dev/null 1>&2
+  return $?
+}
+
+_check_essential_packages()
+{
+  missing_packages=""
+
+  for package in ${REQUIRED_PACKAGES}; do
+    __check_package_availability ${package} || missing_packages="${missing_packages} ${package}"
+  done
+
+  if [ ! -z "${missing_packages}" ]; then
+    extra_msg="Please note that some other packages must be requested during the installation"
+    _error "The following packages are not installed but required: ${missing_packages}\n${extra_msg}"
+  fi 
+}
+
+__check_directory_existence()
+{
+  test ! -d $1
+  return $?
+}
+
+_check_if_already_installed()
+{
+  __check_directory_existence ${FULL_DIST_DIR_PATH}
+  if [ ! 0 -eq $? ]; then
+    _error "The module is already installed. Directory '${FULL_DIST_DIR_PATH}' must be removed prior installation"
+  fi
+}
+
+_download_sources()
+{
+  /usr/bin/git clone ${SOURCE_REPOSITORY} ${FULL_DIST_DIR_PATH}
+  if [ ! 0 -eq $? ]; then
+    _error "Sources could not be retrieved"
+  fi
+}
+
+_create_dkms_config()
+{
+  (
+    cat <<EOF
+###
+### Desc: simple DKMS configuration for ACPI_CALL module
+###
+### Author : Andrew Sichevoi, http://thekondor.net
+### License: GNU GPL v3.0+
+###
+
+PACKAGE_NAME="acpi_call"
+PACKAGE_VERSION=${MODULE_VERSION}
+
+AUTOINSTALL=yes
+REMAKE_INITRD=no
+
+BUILT_MODULE_NAME="${MODULE_NAME}"
+BUILT_MODULE_LOCATION="."
+DEST_MODULE_LOCATION="/kernel/misc"
+
+MAKE="make -C . KERNELDIR=/lib/modules/${kernelver}/build"
+CLEAN="make -C ."
+EOF
+  ) > ${FULL_DIST_DIR_PATH}/dkms.conf
+}
+
+_register_dkms_module()
+{
+  dkms add -m ${MODULE_NAME} -v ${MODULE_VERSION}
+  if [ ! 0 -eq $? ]; then
+    _error "DKMS module cannot be registered"
+  fi
+}
+
+_build_dkms_module()
+{
+  dkms build -m ${MODULE_NAME} -v ${MODULE_VERSION}
+  if [ ! 0 -eq $? ]; then
+    _error "DKMS module cannot be built"
+  fi
+}
+
+_install_dkms_module()
+{
+  dkms install -m ${MODULE_NAME} -v ${MODULE_VERSION}
+  if [ ! 0 -eq $? ]; then
+    _error "DKMS module cannot be installed"
+  fi
+}
+ 
+
+_check_permissions
+_check_if_already_installed
+_check_essential_packages
+_download_sources
+_create_dkms_config
+_register_dkms_module
+_build_dkms_module
+_install_dkms_module
+