APKBUILD

# Maintainer: Natanael Copa <ncopa@alpinelinux.org>

_flavor=grsec
pkgname=linux-${_flavor}
pkgver=2.6.32.15
_kernver=2.6.32
pkgrel=2
pkgdesc="Linux kernel with grsecurity"
url=http://grsecurity.net
depends="mkinitfs linux-firmware"
makedepends="perl installkernel"
options="!strip"
_config=${config:-kernelconfig.${CARCH:-x86}}
install=
source="ftp://ftp.kernel.org/pub/linux/kernel/v2.6/linux-$_kernver.tar.bz2
	ftp://ftp.kernel.org/pub/linux/kernel/v2.6/patch-$pkgver.bz2
	grsecurity-2.1.14-2.6.32.15-201006011506.patch
	0001-grsec-revert-conflicting-flow-cache-changes.patch
	0002-gre-fix-hard-header-destination-address-checking.patch
	0003-ip_gre-include-route-header_len-in-max_headroom-calc.patch
	0004-arp-flush-arp-cache-on-device-change.patch
	0007-r8169-Fix-rtl8169_rx_interrupt.patch
	0009-ipsec-Fix-bogus-bundle-flowi.patch
	0010-xfrm-Remove-xfrm_state_genid.patch
	0011-xfrm_user-verify-policy-direction-at-XFRM_MSG_POLEXP.patch
	0012-xfrm-remove-policy-lock-when-accessing-policy-walk.d.patch
	0013-flow-structurize-flow-cache.patch
	0014-flow-virtualize-flow-cache-entry-methods.patch
	0015-xfrm-cache-bundles-instead-of-policies-for-outgoing-.patch
	0016-xfrm-remove-policy-garbage-collection.patch
	0017-flow-delayed-deletion-of-flow-cache-entries.patch
	0018-xfrm-Fix-crashes-in-xfrm_lookup.patch
	xfrm-fix-policy-unreferencing-on-larval-drop.patch
	r8169-fix-random-mdio_write-failures.patch
	x86-setup-When-restoring-the-screen-update-boot_params-screen_info.patch
	kernelconfig.x86
	"
subpackages="$pkgname-dev linux-firmware:firmware"
license="GPL-2"

_abi_release=${pkgver}-${_flavor}

prepare() {
	cd "$srcdir"/linux-$_kernver
	if [ "$_kernver" != "$pkgver" ]; then
		bunzip2 -c < ../patch-$pkgver.bz2 | patch -p1 -N || return 1
	fi

	# first apply the grsecurity patch and then the rest
	for i in "$srcdir"/grsecurity*.patch "$srcdir"/0[0-9]*.patch \
			"$srcdir"/xfrm*; do
		[ -f $i ] || continue
		msg "Applying $i..."
		patch -s -p1 -N < $i || return 1
	done

	mkdir -p "$srcdir"/build
	cp "$srcdir"/$_config "$srcdir"/build/.config
	make -C "$srcdir"/linux-$_kernver O="$srcdir"/build HOSTCC="${CC:-gcc}" \
		silentoldconfig
}

# this is so we can do: 'abuild menuconfig' to reconfigure kernel
menuconfig() {
	cd "$srcdir"/build || return 1
	make menuconfig
	cp .config "$startdir"/$_config
}

build() {
	cd "$srcdir"/build
	make CC="${CC:--gcc}" \
		KBUILD_BUILD_VERSION="$((pkgrel + 1 ))-Alpine" \
		|| return 1
}

package() {
	cd "$srcdir"/build
	mkdir -p "$pkgdir"/boot "$pkgdir"/lib/modules
	make modules_install install \
		INSTALL_MOD_PATH="$pkgdir" \
		INSTALL_PATH="$pkgdir"/boot

	rm -f "$pkgdir"/lib/modules/${_abi_release}/build \
		"$pkgdir"/lib/modules/${_abi_release}/source
	install -D include/config/kernel.release \
		"$pkgdir"/usr/share/kernel/$_flavor/kernel.release
}

dev() {
	# copy the only the parts that we really need for build 3rd party
	# kernel modules and install those as /usr/src/linux-headers,
	# simlar to what ubuntu does
	#
	# this way you dont need to install the 300-400 kernel sources to 
	# build a tiny kernel module
	#
	pkgdesc="Headers and script for third party modules for grsec kernel"
	local dir="$subpkgdir"/usr/src/linux-headers-${_abi_release}

	# first we import config, run prepare to set up for building 
	# external modules, and create the scripts
	mkdir -p "$dir"
	cp "$srcdir"/$_config "$dir"/.config
	make -j1 -C "$srcdir"/linux-$_kernver O="$dir" HOSTCC="${CC:-gcc}" \
		silentoldconfig prepare scripts

	# remove the stuff that poits to real sources. we want 3rd party
	# modules to believe this is the soruces
	rm "$dir"/Makefile "$dir"/source

	# copy the needed stuff from real sources
	#
	# this is taken from ubuntu kernel build script
	# http://kernel.ubuntu.com/git?p=ubuntu/ubuntu-jaunty.git;a=blob;f=debian/rules.d/3-binary-indep.mk;hb=HEAD
	cd "$srcdir"/linux-$_kernver
	find . -path './include/*' -prune -o -path './scripts/*' -prune \
		-o -type f \( -name 'Makefile*' -o -name 'Kconfig*' \
		-o -name 'Kbuild*' -o -name '*.sh' -o -name '*.pl' \
		-o -name '*.lds' \) | cpio -pdm "$dir"
	cp -a drivers/media/dvb/dvb-core/*.h "$dir"/drivers/media/dvb/dvb-core
	cp -a drivers/media/video/*.h "$dir"/drivers/media/video
	cp -a drivers/media/dvb/frontends/*.h "$dir"/drivers/media/dvb/frontends
	cp -a scripts include "$dir"
	find $(find arch -name include -type d -print) -type f \
		| cpio -pdm "$dir"

	install -Dm644 "$srcdir"/build/Module.symvers \
		"$dir"/Module.symvers

	mkdir -p "$subpkgdir"/lib/modules/${_abi_release}
	ln -sf /usr/src/linux-headers-${_abi_release} \
		"$subpkgdir"/lib/modules/${_abi_release}/build
}

firmware() {
	pkgdesc="Firmware for linux kernel"
	replaces="linux-grsec linux-vserver"
	mkdir -p "$subpkgdir"/lib
	mv "$pkgdir"/lib/firmware "$subpkgdir"/lib/
}

md5sums="260551284ac224c3a43c4adac7df4879  linux-2.6.32.tar.bz2
5c9251844c2819eddee4dba1293bd46d  patch-2.6.32.15.bz2
7f61d0de3d703c465bff03a20b2dbd30  grsecurity-2.1.14-2.6.32.15-201006011506.patch
1d247140abec49b96250aec9aa59b324  0001-grsec-revert-conflicting-flow-cache-changes.patch
437317f88ec13ace8d39c31983a41696  0002-gre-fix-hard-header-destination-address-checking.patch
151b29a161178ed39d62a08f21f3484d  0003-ip_gre-include-route-header_len-in-max_headroom-calc.patch
776adeeb5272093574f8836c5037dd7d  0004-arp-flush-arp-cache-on-device-change.patch
5f8b9a76d95319c5b1aa26b54a42e6b5  0007-r8169-Fix-rtl8169_rx_interrupt.patch
cf168620efa63479a6e03da78906e32f  0009-ipsec-Fix-bogus-bundle-flowi.patch
3af4b5ae1afae3278b0070f585b874e3  0010-xfrm-Remove-xfrm_state_genid.patch
9f284c3fd5ab38cef4544efc1f50c6ba  0011-xfrm_user-verify-policy-direction-at-XFRM_MSG_POLEXP.patch
b035114e893883cf67530350678e00f5  0012-xfrm-remove-policy-lock-when-accessing-policy-walk.d.patch
9dea03ec19aaf9a384e4f56f57009257  0013-flow-structurize-flow-cache.patch
fc9ab26abbfec0d3f20000b5e695620b  0014-flow-virtualize-flow-cache-entry-methods.patch
c09b82b89a49ba2a3836a0bc3a3312f4  0015-xfrm-cache-bundles-instead-of-policies-for-outgoing-.patch
41618efb65ab9ddacfb59a1cde9b4edd  0016-xfrm-remove-policy-garbage-collection.patch
3b83f0972ab715819d1119b120a987e7  0017-flow-delayed-deletion-of-flow-cache-entries.patch
45a676c7a1759fec60b724d557b4e295  0018-xfrm-Fix-crashes-in-xfrm_lookup.patch
c7e606c11c05ff03012b21c3fe0ece47  xfrm-fix-policy-unreferencing-on-larval-drop.patch
ce4a74190febe13713bab1b886dd5bee  r8169-fix-random-mdio_write-failures.patch
a1bcf76870b63a4a4035a8948fb758e2  x86-setup-When-restoring-the-screen-update-boot_params-screen_info.patch
442d7174a9755ed7bba22ebd4918bbe5  kernelconfig.x86"