path: root/kernels/linux-libre-grsec-knock/PKGBUILD

# Maintainer: André Silva <emulatorman@parabola.nu>
# Contributor: Nicolás Reynolds <fauno@kiwwwi.com.ar>
# Contributor: Sorin-Mihai Vârgolici <smv@yobicore.org>
# Contributor: Michał Masłowski <mtjm@mtjm.eu>
# Contributor: Márcio Silva <coadde@parabola.nu>
# Contributor: Luke Shumaker <lukeshu@sbcglobal.net>
# Contributor: Luke R. <g4jc@openmailbox.org>

# Based on linux-grsec package

pkgbase=linux-libre-grsec-knock
_pkgbasever=4.4-gnu
_pkgver=4.4.5-gnu
_grsecver=3.1
_timestamp=201603142220
_knockpatchver=4.2_2

_replacesarchkernel=('linux%') # '%' gets replaced with _kernelname
_replacesoldkernels=() # '%' gets replaced with _kernelname
_replacesoldmodules=() # '%' gets replaced with _kernelname

_srcname=linux-${_pkgbasever%-*}
_archpkgver=${_pkgver%-*}.${_timestamp}
pkgver=${_pkgver//-/_}.${_timestamp}
pkgrel=1
rcnrel=armv7-x5
arch=('i686' 'x86_64' 'armv7h')
url="https://wiki.parabola.nu/Grsecurity%2BKnock"
license=('GPL2')
makedepends=('xmlto' 'docbook-xsl' 'kmod' 'inetutils' 'bc')
if [ "${CARCH}" = "armv7h" ]; then
  makedepends+=('git')
fi
options=('!strip')
source=("http://linux-libre.fsfla.org/pub/linux-libre/releases/${_pkgbasever}/linux-libre-${_pkgbasever}.tar.xz"
        "http://linux-libre.fsfla.org/pub/linux-libre/releases/${_pkgbasever}/linux-libre-${_pkgbasever}.tar.xz.sign"
        "http://linux-libre.fsfla.org/pub/linux-libre/releases/${_pkgver}/patch-${_pkgbasever}-${_pkgver}.xz"
        "http://linux-libre.fsfla.org/pub/linux-libre/releases/${_pkgver}/patch-${_pkgbasever}-${_pkgver}.xz.sign"
        "https://repo.parabola.nu/other/grsecurity-libre/test/grsecurity-libre-${_grsecver}-${_pkgver%-*}-${_timestamp}.patch"
        "https://repo.parabola.nu/other/grsecurity-libre/test/grsecurity-libre-${_grsecver}-${_pkgver%-*}-${_timestamp}.patch.sig"
        #"http://gnunet.org/sites/default/files/tcp_stealth_${_knockpatchver}.diff"
        #"tcp_stealth_${_knockpatchver}.diff.sig::http://gnunet.org/sites/default/files/tcp_stealth_${_knockpatchver%_1}.diff_1.sig"
        "https://repo.parabola.nu/other/knock/patches/linux-libre/tcp_stealth_${_knockpatchver}.diff"
        "https://repo.parabola.nu/other/knock/patches/linux-libre/tcp_stealth_${_knockpatchver}.diff.sig"
        "https://repo.parabola.nu/other/linux-libre/logos/logo_linux_clut224.ppm"
        "https://repo.parabola.nu/other/linux-libre/logos/logo_linux_clut224.ppm.sig"
        "https://repo.parabola.nu/other/linux-libre/logos/logo_linux_mono.pbm"
        "https://repo.parabola.nu/other/linux-libre/logos/logo_linux_mono.pbm.sig"
        "https://repo.parabola.nu/other/linux-libre/logos/logo_linux_vga16.ppm"
        "https://repo.parabola.nu/other/linux-libre/logos/logo_linux_vga16.ppm.sig"
        # the main kernel config files
        'config.i686' 'config.x86_64' 'config.armv7h'
        # standard config files for mkinitcpio ramdisk
        'linux.preset'
        'change-default-console-loglevel.patch'
        '0001-drm-radeon-Make-the-driver-load-without-the-firmwares.patch'
        '0002-usb-serial-gadget-no-TTY-hangup-on-USB-disconnect-WI.patch'
        # armv7h patches
        "https://repo.parabola.nu/other/rcn-libre-grsec/patches/${_pkgver%-*}/rcn-libre-grsec-${_pkgver%-*}-${rcnrel}.patch"
        "https://repo.parabola.nu/other/rcn-libre-grsec/patches/${_pkgver%-*}/rcn-libre-grsec-${_pkgver%-*}-${rcnrel}.patch.sig"
        '0001-ARM-disable-implicit-function-declaration-error.patch'
        '0001-ARM-fix-ops-undeclared-first-use-in-this-function.patch'
        '0001-ARM-atags-add-support-for-Marvell-s-u-boot.patch'
        '0002-ARM-atags-fdt-retrieve-MAC-addresses-from-Marvell-bo.patch'
        '0003-SMILE-Plug-device-tree-file.patch'
        '0004-fix-mvsdio-eMMC-timing.patch'
        '0005-net-smsc95xx-Allow-mac-address-to-be-set-as-a-parame.patch'
        '0006-ARM-TLV320AIC23-SoC-Audio-Codec-Fix-errors-reported-.patch'
        '0007-set-default-cubietruck-led-triggers.patch'
        '0008-USB-armory-support.patch'
        '0009-ARM-dts-dove-add-Dove-divider-clocks.patch')
sha256sums=('f53e99866c751f21412737d1f06b0721e207f495c8c64f97dffb681795ee69a0'
            'SKIP'
            '4adf791c9d7e52ac72c60d337e3fa59f8cef5fb1f497a192345b70ac915674f1'
            'SKIP'
            'a4b7f9354fe09ea8938c79d2d158600bba426190a009900d3af33e0fe1d3b8c2'
            'SKIP'
            'c7c4ab580f00dca4114c185812a963e73217e6bf86406c240d669026dc3f98a4'
            'SKIP'
            'bfd4a7f61febe63c880534dcb7c31c5b932dde6acf991810b41a939a93535494'
            'SKIP'
            '13bd7a8d9ed6b6bc971e4cd162262c5a20448a83796af39ce394d827b0e5de74'
            'SKIP'
            '6de8a8319271809ffdb072b68d53d155eef12438e6d04ff06a5a4db82c34fa8a'
            'SKIP'
            '64bce353c6da5c852f4b3b6331ddf5386a037fd91190645fe8883863078fe6bc'
            '8b8b95e08dcfbda80f96574787b5f54773bc08587d7fccf14174a6d4aec7fcf8'
            'cbd876f4a94317461d62adae169906668c3bf914c8f4497ef2eda97bf2e9d756'
            'f0d90e756f14533ee67afda280500511a62465b4f76adcc5effa95a40045179c'
            '1256b241cd477b265a3c2d64bdc19ffe3c9bbcee82ea3994c590c2c76e767d99'
            '61370b766e0c60b407c29d2c44b3f55fc352e9049c448bc8fcddb0efc53e42fc'
            '3d3266bd082321dccf429cc2200d1a4d870d2031546f9f591b6dfbb698294808'
            '5a8d8fe270a5423fb5f712aebf55d367906a8f44f1ca343341ab67619479a319'
            'SKIP'
            '1fc7055041da895d5d023fcf0c5e06d00a3506ae98931138229dba7392e2c382'
            'bd7e6446b8ca7724642f8317326fe228b116be28f9649b5783530d7c0899ded8'
            'a851312b26800a7e189b34547d5d4b2b62a18874f07335ac6f426c32b47c3817'
            '486976f36e1919eac5ee984cb9a8d23a972f23f22f8344eda47b487ea91047f4'
            '6dadc17ea56d93ec0f1d0c3c98c25a7863e9ba3c4af50dc411d630a1bcc98f08'
            '9c5d6d035c9a7103f19804c2284291d461d4b848cccd3ec07272bde68ba29513'
            '6644705cd73c55056b5fed91cfb3199c1114b088d96dbd3c29358cd49863aeba'
            '08d0aa76393ea2d1a853d0ea9b02aa616224ac915473ab057bb98285212bc994'
            '1cb502674bf7a1ea79b359d1613fe891ba37f6aa64f5f5eca309d46ba01ab417'
            '05bf1d8f94feab06bdd9fd958bc9bde4d1249a0cdeb8d3d3e16e6fac6dc5baed'
            '5e1b8b1e9b3243a5ab315481c39b1b88f28923148659dcc0ac7ed78d9ba4f072')
validpgpkeys=(
              '474402C8C582DAFBE389C427BCB7CF877E7D47A7' # Alexandre Oliva
              'C92BAA713B8D53D3CAE63FC9E6974752F9704456' # André Silva
              '684D54A189305A9CC95446D36B888913DDB59515' # Márcio Silva
              #'F949CFBD140A6DD071E90B8CDC24396B6D451038' # Julian Kirsch
)

_kernelname=${pkgbase#linux-libre}
_replacesarchkernel=("${_replacesarchkernel[@]/\%/${_kernelname}}")
_replacesoldkernels=("${_replacesoldkernels[@]/\%/${_kernelname}}")
_replacesoldmodules=("${_replacesoldmodules[@]/\%/${_kernelname}}")

case "${CARCH}" in
  i686|x86_64) KARCH=x86;;
  armv7h) KARCH=arm;;
esac

prepare() {
  cd "${srcdir}/${_srcname}"

  # add upstream patch
  if [ "${_pkgbasever}" != "${_pkgver}" ]; then
    patch -p1 -i "${srcdir}/patch-${_pkgbasever}-${_pkgver}"
  fi

  # add grsecurity patches (bnx2 firmware deblobbed)
  patch -Np1 -i "${srcdir}/grsecurity-libre-${_grsecver}-${_pkgver%-*}-${_timestamp}.patch"
  rm localversion-grsec

  # add knock patch
  patch -p1 -i "${srcdir}/tcp_stealth_${_knockpatchver}.diff"

  if [ "${CARCH}" = "armv7h" ]; then
    # RCN patch (CM3 firmware deblobbed)
    git apply -v "${srcdir}/rcn-libre-grsec-${_pkgver%-*}-${rcnrel}.patch"

    # disable implicit function declaration error since grsecurity patches conflicts against some RCN modules
    patch -p1 -i "${srcdir}/0001-ARM-disable-implicit-function-declaration-error.patch"

    # fix undeclared variable
    patch -p1 -i "${srcdir}/0001-ARM-fix-ops-undeclared-first-use-in-this-function.patch"

    # ALARM patches
    patch -p1 -i "${srcdir}/0001-ARM-atags-add-support-for-Marvell-s-u-boot.patch"
    patch -p1 -i "${srcdir}/0002-ARM-atags-fdt-retrieve-MAC-addresses-from-Marvell-bo.patch"
    patch -p1 -i "${srcdir}/0003-SMILE-Plug-device-tree-file.patch"
    patch -p1 -i "${srcdir}/0004-fix-mvsdio-eMMC-timing.patch"
    patch -p1 -i "${srcdir}/0005-net-smsc95xx-Allow-mac-address-to-be-set-as-a-parame.patch"
    patch -p1 -i "${srcdir}/0006-ARM-TLV320AIC23-SoC-Audio-Codec-Fix-errors-reported-.patch"
    patch -p1 -i "${srcdir}/0007-set-default-cubietruck-led-triggers.patch"
    patch -p1 -i "${srcdir}/0008-USB-armory-support.patch"
    patch -p1 -i "${srcdir}/0009-ARM-dts-dove-add-Dove-divider-clocks.patch"
  fi

  # add freedo as boot logo
  install -m644 -t drivers/video/logo \
    "${srcdir}/logo_linux_"{clut224.ppm,vga16.ppm,mono.pbm}

  # add latest fixes from stable queue, if needed
  # http://git.kernel.org/?p=linux/kernel/git/stable/stable-queue.git

  # set DEFAULT_CONSOLE_LOGLEVEL to 4 (same value as the 'quiet' kernel param)
  # remove this when a Kconfig knob is made available by upstream
  # (relevant patch sent upstream: https://lkml.org/lkml/2011/7/26/227)
  patch -p1 -i "${srcdir}/change-default-console-loglevel.patch"

  # make the radeon driver load without the firmwares
  # http://www.fsfla.org/pipermail/linux-libre/2015-August/003098.html
  if [ "${CARCH}" = "x86_64" ] || [ "${CARCH}" = "i686" ]; then ## This patch is only needed for x86 computers, so we disable it for others
    patch -p1 -i "${srcdir}/0001-drm-radeon-Make-the-driver-load-without-the-firmwares.patch"
  fi

  # maintain the TTY over USB disconnects
  # http://www.coreboot.org/EHCI_Gadget_Debug
  patch -p1 -i "${srcdir}/0002-usb-serial-gadget-no-TTY-hangup-on-USB-disconnect-WI.patch"

  cat "${srcdir}/config.${CARCH}" > ./.config

  # append pkgrel to extraversion
  sed -ri "s|^(EXTRAVERSION =.*\S).*|\1-${_timestamp}-${pkgrel}|" Makefile

  # don't run depmod on 'make install'. We'll do this ourselves in packaging
  sed -i '2iexit 0' scripts/depmod.sh

  # get kernel version
  make prepare

  # load configuration
  # Configure the kernel. Replace the line below with one of your choice.
  #make menuconfig # CLI menu for configuration
  #make nconfig # new CLI menu for configuration
  #make xconfig # X-based configuration
  #make oldconfig # using old config from previous kernel version
  # ... or manually edit .config

  # rewrite configuration
  yes "" | make config >/dev/null
}

build() {
  cd "${srcdir}/${_srcname}"

  if [ "${CARCH}" = "armv7h" ]; then
    make ${MAKEFLAGS} LOCALVERSION= zImage modules dtbs
  elif [ "${CARCH}" = "x86_64" ] || [ "${CARCH}" = "i686" ]; then
    make ${MAKEFLAGS} LOCALVERSION= bzImage modules
  fi
}

_package() {
  pkgdesc="The ${pkgbase^} kernel and modules with grsecurity/PaX patches and support for stealth TCP sockets"
  [ "${pkgbase}" = "linux-libre" ] && groups=('base')
  depends=('coreutils' 'linux-libre-firmware' 'kmod' 'grsec-common')
  optdepends=('crda: to set the correct wireless channels of your country'
              'gradm: to configure and enable Role Based Access Control (RBAC)'
              'paxd-libre: to enable PaX exploit mitigations and apply exceptions automatically'
              'systemd-knock: to use system and service manager with TCP Stealth support'
              'openssh-knock: to use SSH with TCP Stealth support')
  provides=("${_replacesarchkernel[@]/%/=${_archpkgver}}")
  conflicts=("${_replacesarchkernel[@]}" "${_replacesoldkernels[@]}" "${_replacesoldmodules[@]}")
  replaces=("${_replacesarchkernel[@]}" "${_replacesoldkernels[@]}" "${_replacesoldmodules[@]}")
  if [ "${CARCH}" = "x86_64" ] || [ "${CARCH}" = "i686" ]; then
    depends+=('mkinitcpio>=0.7')
    backup=("etc/mkinitcpio.d/${pkgbase}.preset")
  fi
  install=linux.install

  cd "${srcdir}/${_srcname}"

  # get kernel version
  _kernver="$(make LOCALVERSION= kernelrelease)"
  _basekernel=${_kernver%%-*}
  _basekernel=${_basekernel%.*}

  mkdir -p "${pkgdir}"/{lib/modules,lib/firmware,boot}
  make LOCALVERSION= INSTALL_MOD_PATH="${pkgdir}" modules_install
  if [ "${CARCH}" = "armv7h" ]; then
    make LOCALVERSION= INSTALL_DTBS_PATH="${pkgdir}/boot/dtbs/${pkgbase}" dtbs_install
    cp arch/$KARCH/boot/zImage "${pkgdir}/boot/vmlinuz-${pkgbase}"
  elif [ "${CARCH}" = "x86_64" ] || [ "${CARCH}" = "i686" ]; then
    cp arch/$KARCH/boot/bzImage "${pkgdir}/boot/vmlinuz-${pkgbase}"
  fi

  # set correct depmod command for install
  cp -f "${startdir}/${install}" "${startdir}/${install}.pkg"
  true && install=${install}.pkg
  sed \
    -e  "s/KERNEL_NAME=.*/KERNEL_NAME=${_kernelname}/" \
    -e  "s/KERNEL_VERSION=.*/KERNEL_VERSION=${_kernver}/" \
    -i "${startdir}/${install}"

  if [ "${CARCH}" = "x86_64" ] || [ "${CARCH}" = "i686" ]; then
    # install mkinitcpio preset file for kernel
    install -D -m644 "${srcdir}/linux.preset" "${pkgdir}/etc/mkinitcpio.d/${pkgbase}.preset"
    sed \
      -e "1s|'linux.*'|'${pkgbase}'|" \
      -e "s|ALL_kver=.*|ALL_kver=\"/boot/vmlinuz-${pkgbase}\"|" \
      -e "s|default_image=.*|default_image=\"/boot/initramfs-${pkgbase}.img\"|" \
      -e "s|fallback_image=.*|fallback_image=\"/boot/initramfs-${pkgbase}-fallback.img\"|" \
      -i "${pkgdir}/etc/mkinitcpio.d/${pkgbase}.preset"
  fi

  # remove build and source links
  rm -f "${pkgdir}"/lib/modules/${_kernver}/{source,build}
  # remove the firmware
  rm -rf "${pkgdir}/lib/firmware"
  # make room for external modules
  ln -s "../extramodules-${_basekernel}${_kernelname}" "${pkgdir}/lib/modules/${_kernver}/extramodules"
  # add real version for building modules and running depmod from post_install/upgrade
  mkdir -p "${pkgdir}/lib/modules/extramodules-${_basekernel}${_kernelname}"
  echo "${_kernver}" > "${pkgdir}/lib/modules/extramodules-${_basekernel}${_kernelname}/version"

  # Now we call depmod...
  depmod -b "${pkgdir}" -F System.map "${_kernver}"

  # move module tree /lib -> /usr/lib
  mkdir -p "${pkgdir}/usr"
  mv "${pkgdir}/lib" "${pkgdir}/usr/"

  if [ "${CARCH}" = "x86_64" ] || [ "${CARCH}" = "i686" ]; then
    # add vmlinux
    install -D -m644 vmlinux "${pkgdir}/usr/lib/modules/${_kernver}/build/vmlinux"
  fi

  # add grsecurity gcc plugins
  mkdir -p "$pkgdir/usr/lib/modules/${_kernver}/build/tools/gcc"
  cp -a tools/gcc/*.h "$pkgdir/usr/lib/modules/${_kernver}/build/tools/gcc/"
  cp -a tools/gcc/Makefile "$pkgdir/usr/lib/modules/${_kernver}/build/tools/gcc/"
  install -m644 tools/gcc/*.so "$pkgdir/usr/lib/modules/${_kernver}/build/tools/gcc/"
  mkdir -p "$pkgdir/usr/lib/modules/${_kernver}/build/tools/gcc/size_overflow_plugin"
  install -m644 tools/gcc/size_overflow_plugin/Makefile tools/gcc/size_overflow_plugin/*.so \
    "$pkgdir/usr/lib/modules/${_kernver}/build/tools/gcc/size_overflow_plugin"
}

_package-headers() {
  pkgdesc="Header files and scripts for building modules for ${pkgbase^} kernel"
  provides=("${_replacesarchkernel[@]/%/-headers=${_archpkgver}}")
  conflicts=("${_replacesarchkernel[@]/%/-headers}" "${_replacesoldkernels[@]/%/-headers}")
  replaces=("${_replacesarchkernel[@]/%/-headers}" "${_replacesoldkernels[@]/%/-headers}")

  install -dm755 "${pkgdir}/usr/lib/modules/${_kernver}"

  cd "${srcdir}/${_srcname}"
  install -D -m644 Makefile \
    "${pkgdir}/usr/lib/modules/${_kernver}/build/Makefile"
  install -D -m644 kernel/Makefile \
    "${pkgdir}/usr/lib/modules/${_kernver}/build/kernel/Makefile"
  install -D -m644 .config \
    "${pkgdir}/usr/lib/modules/${_kernver}/build/.config"

  mkdir -p "${pkgdir}/usr/lib/modules/${_kernver}/build/include"

  for i in acpi asm-generic config crypto drm generated keys linux math-emu \
    media net pcmcia scsi sound trace uapi video xen; do
    cp -a include/${i} "${pkgdir}/usr/lib/modules/${_kernver}/build/include/"
  done

  # copy arch includes for external modules
  mkdir -p "${pkgdir}/usr/lib/modules/${_kernver}/build/arch/${KARCH}"
  cp -a arch/${KARCH}/include "${pkgdir}/usr/lib/modules/${_kernver}/build/arch/${KARCH}/"
  if [ "${CARCH}" = "armv7h" ]; then
    for i in dove exynos mvebu omap2 versatile; do
      mkdir -p "${pkgdir}/usr/lib/modules/${_kernver}/build/arch/${KARCH}/mach-${i}"
      cp -a arch/${KARCH}/mach-${i}/include "${pkgdir}/usr/lib/modules/${_kernver}/build/arch/${KARCH}/mach-${i}/"
    done
    for i in omap orion samsung versatile; do
      mkdir -p "${pkgdir}/usr/lib/modules/${_kernver}/build/arch/${KARCH}/plat-${i}"
      cp -a arch/${KARCH}/plat-${i}/include "${pkgdir}/usr/lib/modules/${_kernver}/build/arch/${KARCH}/plat-${i}/"
    done
  fi

  # copy files necessary for later builds
  cp Module.symvers "${pkgdir}/usr/lib/modules/${_kernver}/build"
  cp -a scripts "${pkgdir}/usr/lib/modules/${_kernver}/build"

  # fix permissions on scripts dir
  chmod og-w -R "${pkgdir}/usr/lib/modules/${_kernver}/build/scripts"
  mkdir -p "${pkgdir}/usr/lib/modules/${_kernver}/build/.tmp_versions"

  mkdir -p "${pkgdir}/usr/lib/modules/${_kernver}/build/arch/${KARCH}/kernel"

  cp arch/${KARCH}/Makefile "${pkgdir}/usr/lib/modules/${_kernver}/build/arch/${KARCH}/"

  if [ "${CARCH}" = "i686" ]; then
    cp arch/${KARCH}/Makefile_32.cpu "${pkgdir}/usr/lib/modules/${_kernver}/build/arch/${KARCH}/"
  fi

  cp arch/${KARCH}/kernel/asm-offsets.s "${pkgdir}/usr/lib/modules/${_kernver}/build/arch/${KARCH}/kernel/"

  # add docbook makefile
  install -D -m644 Documentation/DocBook/Makefile \
    "${pkgdir}/usr/lib/modules/${_kernver}/build/Documentation/DocBook/Makefile"

  # add dm headers
  mkdir -p "${pkgdir}/usr/lib/modules/${_kernver}/build/drivers/md"
  cp drivers/md/*.h "${pkgdir}/usr/lib/modules/${_kernver}/build/drivers/md"

  # add inotify.h
  mkdir -p "${pkgdir}/usr/lib/modules/${_kernver}/build/include/linux"
  cp include/linux/inotify.h "${pkgdir}/usr/lib/modules/${_kernver}/build/include/linux/"

  # add wireless headers
  mkdir -p "${pkgdir}/usr/lib/modules/${_kernver}/build/net/mac80211/"
  cp net/mac80211/*.h "${pkgdir}/usr/lib/modules/${_kernver}/build/net/mac80211/"

  # add dvb headers for external modules
  # in reference to:
  # http://bugs.archlinux.org/task/9912
  mkdir -p "${pkgdir}/usr/lib/modules/${_kernver}/build/drivers/media/dvb-core"
  cp drivers/media/dvb-core/*.h "${pkgdir}/usr/lib/modules/${_kernver}/build/drivers/media/dvb-core/"
  # and...
  # http://bugs.archlinux.org/task/11194
  mkdir -p "${pkgdir}/usr/lib/modules/${_kernver}/build/include/config/dvb/"
  cp include/config/dvb/*.h "${pkgdir}/usr/lib/modules/${_kernver}/build/include/config/dvb/"

  # add dvb headers for http://mcentral.de/hg/~mrec/em28xx-new
  # in reference to:
  # http://bugs.archlinux.org/task/13146
  mkdir -p "${pkgdir}/usr/lib/modules/${_kernver}/build/drivers/media/dvb-frontends/"
  cp drivers/media/dvb-frontends/lgdt330x.h "${pkgdir}/usr/lib/modules/${_kernver}/build/drivers/media/dvb-frontends/"
  mkdir -p "${pkgdir}/usr/lib/modules/${_kernver}/build/drivers/media/i2c/"
  cp drivers/media/i2c/msp3400-driver.h "${pkgdir}/usr/lib/modules/${_kernver}/build/drivers/media/i2c/"

  # add dvb headers
  # in reference to:
  # http://bugs.archlinux.org/task/20402
  mkdir -p "${pkgdir}/usr/lib/modules/${_kernver}/build/drivers/media/usb/dvb-usb"
  cp drivers/media/usb/dvb-usb/*.h "${pkgdir}/usr/lib/modules/${_kernver}/build/drivers/media/usb/dvb-usb/"
  mkdir -p "${pkgdir}/usr/lib/modules/${_kernver}/build/drivers/media/dvb-frontends"
  cp drivers/media/dvb-frontends/*.h "${pkgdir}/usr/lib/modules/${_kernver}/build/drivers/media/dvb-frontends/"
  mkdir -p "${pkgdir}/usr/lib/modules/${_kernver}/build/drivers/media/tuners"
  cp drivers/media/tuners/*.h "${pkgdir}/usr/lib/modules/${_kernver}/build/drivers/media/tuners/"

  # add xfs and shmem for aufs building
  mkdir -p "${pkgdir}/usr/lib/modules/${_kernver}/build/fs/xfs"
  mkdir -p "${pkgdir}/usr/lib/modules/${_kernver}/build/mm"
  # removed in 3.17-gnu series
  # cp fs/xfs/xfs_sb.h "${pkgdir}/usr/lib/modules/${_kernver}/build/fs/xfs/xfs_sb.h"

  # copy in Kconfig files
  for i in $(find . -name "Kconfig*"); do
    mkdir -p "${pkgdir}"/usr/lib/modules/${_kernver}/build/`echo ${i} | sed 's|/Kconfig.*||'`
    cp ${i} "${pkgdir}/usr/lib/modules/${_kernver}/build/${i}"
  done

  chown -R root.root "${pkgdir}/usr/lib/modules/${_kernver}/build"
  find "${pkgdir}/usr/lib/modules/${_kernver}/build" -type d -exec chmod 755 {} \;

  # strip scripts directory
  find "${pkgdir}/usr/lib/modules/${_kernver}/build/scripts" -type f -perm -u+w 2>/dev/null | while read binary ; do
    case "$(file -bi "${binary}")" in
      *application/x-sharedlib*) # Libraries (.so)
        /usr/bin/strip ${STRIP_SHARED} "${binary}";;
      *application/x-archive*) # Libraries (.a)
        /usr/bin/strip ${STRIP_STATIC} "${binary}";;
      *application/x-executable*) # Binaries
        /usr/bin/strip ${STRIP_BINARIES} "${binary}";;
    esac
  done

  # remove unneeded architectures
  find "${pkgdir}"/usr/lib/modules/${_kernver}/build/arch -mindepth 1 -maxdepth 1 -type d -not -name "$KARCH" -exec rm -rf {} +

  # remove a files already in docs package
  rm -f "${pkgdir}/usr/lib/modules/${_kernver}/build/Documentation/kbuild/Kconfig.recursion-issue-01"
  rm -f "${pkgdir}/usr/lib/modules/${_kernver}/build/Documentation/kbuild/Kconfig.recursion-issue-02"
  rm -f "${pkgdir}/usr/lib/modules/${_kernver}/build/Documentation/kbuild/Kconfig.select-break"
}

_package-docs() {
  pkgdesc="Kernel hackers manual - HTML documentation that comes with the ${pkgbase^} kernel"
  provides=("${_replacesarchkernel[@]/%/-docs=${_archpkgver}}")
  conflicts=("${_replacesarchkernel[@]/%/-docs}" "${_replacesoldkernels[@]/%/-docs}")
  replaces=("${_replacesarchkernel[@]/%/-docs}" "${_replacesoldkernels[@]/%/-docs}")

  cd "${srcdir}/${_srcname}"

  mkdir -p "${pkgdir}/usr/lib/modules/${_kernver}/build"
  cp -al Documentation "${pkgdir}/usr/lib/modules/${_kernver}/build"
  find "${pkgdir}" -type f -exec chmod 444 {} \;
  find "${pkgdir}" -type d -exec chmod 755 {} \;

  # remove a file already in linux package
  rm -f "${pkgdir}/usr/lib/modules/${_kernver}/build/Documentation/DocBook/Makefile"
}

pkgname=("${pkgbase}" "${pkgbase}-headers" "${pkgbase}-docs")
for _p in ${pkgname[@]}; do
  eval "package_${_p}() {
    $(declare -f "_package${_p#${pkgbase}}")
    _package${_p#${pkgbase}}
  }"
done

# vim:set ts=8 sts=2 sw=2 et: