#!/bin/bash

# kmodtool - Helper script for building kernel module RPMs

# Copyright (c) 2003-2006 Ville Skyttä <ville.skytta@iki.fi>,

#                         Thorsten Leemhuis <fedora@leemhuis.info>

#                         Jon Masters <jcm@redhat.com>

#

# Permission is hereby granted, free of charge, to any person obtaining

# a copy of this software and associated documentation files (the

# "Software"), to deal in the Software without restriction, including

# without limitation the rights to use, copy, modify, merge, publish,

# distribute, sublicense, and/or sell copies of the Software, and to

# permit persons to whom the Software is furnished to do so, subject to

# the following conditions:

#

# The above copyright notice and this permission notice shall be

# included in all copies or substantial portions of the Software.

#

# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,

# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF

# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND

# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE

# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION

# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION

# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

shopt -s extglob

myprog="kmodtool"

myver="0.10.10_kmp2"

knownvariants=@(BOOT|PAE|@(big|huge)mem|debug|enterprise|kdump|?(large)smp|uml|xen[0U]?(-PAE)|xen)

kmod_name=

kver=

verrel=

variant=

kmp=

get_verrel ()

{

  verrel=${1:-$(uname -r)}

  verrel=${verrel%%$knownvariants}

}

print_verrel ()

{

  get_verrel $@

  echo "${verrel}"

}

get_variant ()

{

  get_verrel $@

  variant=${1:-$(uname -r)}

  variant=${variant##$verrel}

  variant=${variant:-'""'}

}

print_variant ()

{

  get_variant $@

  echo "${variant}"

}

get_rpmtemplate ()

{

    local variant="${1}"

    local dashvariant="${variant:+-${variant}}"

    case "$verrel" in

        *.el*) kdep="kernel${dashvariant}-%{_target_cpu} = ${verrel}" ;;

        *.EL*) kdep="kernel${dashvariant}-%{_target_cpu} = ${verrel}" ;;

        *)     kdep="kernel-%{_target_cpu} = ${verrel}${variant}"     ;;

    esac

    echo "%package       -n kmod-${kmod_name}${dashvariant}"

    if [ -z "$kmp_provides_summary" ]; then

        echo "Summary:          ${kmod_name} kernel module(s)"

    fi

    if [ -z "$kmp_provides_group" ]; then

        echo "Group:            System Environment/Kernel"

    fi

    if [ ! -z "$kmp" ]; then

        echo "Version: %{kmp_version}"

        echo "Release: %{kmp_release}"

    fi

    if [ ! -z "$kmp" ]; then

        echo "%global _use_internal_dependency_generator 0"

    fi

    cat <

Provides:         kernel-modules = ${verrel}${variant}

Provides:         ${kmod_name}-kmod = %{?epoch:%{epoch}:}%{version}-%{release}

EOF

    if [ -z "$kmp" ]; then

        echo "Requires:         ${kdep}"

    fi

    cat <

Requires:         ${kmod_name}-kmod-common >= %{?epoch:%{epoch}:}%{version}

Requires(post):   /sbin/depmod

Requires(postun): /sbin/depmod

EOF

if [ "no" != "$kmp_nobuildreqs" ]

then

    echo "BuildRequires: kernel${dashvariant}-devel-%{_target_cpu} = ${verrel}"

fi

if [ "" != "$kmp_override_preamble" ]

then

    cat "$kmp_override_preamble"

fi

cat <

%description   -n kmod-${kmod_name}${dashvariant}

This package provides the ${kmod_name} kernel modules built for the Linux

kernel ${verrel}${variant} for the %{_target_cpu} family of processors.

%post          -n kmod-${kmod_name}${dashvariant}

if [ -e "/boot/System.map-${verrel}${variant}" ]; then

    /sbin/depmod -aeF "/boot/System.map-${verrel}${variant}" "${verrel}${variant}" > /dev/null || :

fi

EOF

    if [ ! -z "$kmp" ]; then

        cat <

modules=( \$(rpm -ql kmod-${kmod_name}${dashvariant} | grep '\.ko$') )

if [ -x "/sbin/weak-modules" ]; then

    printf '%s\n' "\${modules[@]}" \

    | /sbin/weak-modules --add-modules

fi

%preun         -n kmod-${kmod_name}${dashvariant}

find /lib/modules/${verrel}${variant}/extra/${kmod_name} | grep '\.ko$' \

    > /var/run/rpm-kmod-${kmod_name}${dashvariant}-modules

EOF

    fi

    cat <

%postun        -n kmod-${kmod_name}${dashvariant}

/sbin/depmod -aF /boot/System.map-${verrel}${variant} ${verrel}${variant} &> /dev/null || :

EOF

    if [ ! -z "$kmp" ]; then

        cat <

modules=( \$(cat /var/run/rpm-kmod-${kmod_name}${dashvariant}-modules) )

#rm /var/run/rpm-kmod-${kmod_name}${dashvariant}-modules

if [ -x "/sbin/weak-modules" ]; then

    printf '%s\n' "\${modules[@]}" \

    | /sbin/weak-modules --remove-modules

fi

EOF

    fi

echo "%files         -n kmod-${kmod_name}${dashvariant}"

if [ "" == "$kmp_override_filelist" ];

then

    echo "%defattr(644,root,root,755)"

    echo "/lib/modules/${verrel}${variant}/"

else

    cat "$kmp_override_filelist"

fi

}

print_rpmtemplate ()

{

  kmod_name="${1}"

  shift

  kver="${1}"

  get_verrel "${1}"

  shift

  if [ -z "${kmod_name}" ] ; then

    echo "Please provide the kmodule-name as first parameter." >&2

    exit 2

  elif [ -z "${kver}" ] ; then

    echo "Please provide the kver as second parameter." >&2

    exit 2

  elif [ -z "${verrel}" ] ; then

    echo "Couldn't find out the verrel." >&2

    exit 2

  fi

  for variant in "$@" ; do

      if [ "default" == "$variant" ];

      then

            get_rpmtemplate ""

      else

            get_rpmtemplate "${variant}"

      fi

  done

}

usage ()

{

  cat <

You called: ${invocation}

Usage: ${myprog} <command> <option>+

 Commands:

  verrel <uname>                               

    - Get "base" version-release.

  variant <uname>                               

    - Get variant from uname.

  rpmtemplate <mainpgkname> <uname> <variants> 

    - Return a template for use in a source RPM

  rpmtemplate_kmp <mainpgkname> <uname> <variants>

    - Return a template for use in a source RPM with KMP dependencies

  version  

    - Output version number and exit.

EOF

}

invocation="$(basename ${0}) $@"

while [ "${1}" ] ; do

  case "${1}" in

    verrel)

      shift

      print_verrel $@

      exit $?

      ;;

    variant)

      shift

      print_variant $@

      exit $?

      ;;

    rpmtemplate)

      shift

      print_rpmtemplate "$@"

      exit $?

      ;;

    rpmtemplate_kmp)

      shift

      kmp=1

      print_rpmtemplate "$@"

      exit $?

      ;;

    version)

      echo "${myprog} ${myver}"

      exit 0

      ;;

    *)

      echo "Error: Unknown option '${1}'." >&2

      usage >&2

      exit 2

      ;;

  esac

done

# Local variables:

# mode: sh

# sh-indentation: 2

# indent-tabs-mode: nil

# End:

# ex: ts=2 sw=2 et