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

_flavor=vserver
pkgname=linux-${_flavor}
pkgver=3.4.45
pkgrel=0
_vsver=vs2.3.3.9

if [ "${pkgver##*.*.*}" = "$pkgver" ]; then
	_kernver=$pkgver
else
	_kernver=${pkgver%.*}
fi

pkgdesc="Linux kernel with vserver"
url="http://linux-vserver.org/"
depends="mkinitfs linux-firmware"
makedepends="perl installkernel"
options="!strip"
_config=${config:-kernelconfig.${CARCH}}
install=
source="http://www.kernel.org/pub/linux/kernel/v3.x/linux-$_kernver.tar.xz
	http://www.kernel.org/pub/linux/kernel/v3.x/patch-$pkgver.xz
	patch-$pkgver-$_vsver.diff
	kernelconfig.x86
	kernelconfig.x86_64
	"
subpackages="$pkgname-dev"
arch="all"
license="GPL-2"

_abi_release=${pkgver}-${_vsver}

prepare() {
	cd "$srcdir"/linux-$_kernver
	if [ "${pkgver%.0}" = "$pkgver" ]; then
		msg "Applying $i"
		unxz -c < ../patch-$pkgver.xz | patch -p1 -N || return 1
	fi

	# ERR is no valid signal
	sed -i -e '/^trap/s/ERR//' scripts/link-vmlinux.sh

	# first apply patches in specified order
	for i in $source; do
		i=${i##*/}
		case $i in
		*.patch|*.diff)
			msg "Applying $i..."
			patch -s -p1 -i "$srcdir"/$i || return 1
			;;
		esac
	done

	mkdir -p "$srcdir"/build
	cp "$srcdir"/$_config "$srcdir"/build/.config || return 1
	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 "$srcdir"/build
	make menuconfig
	cp .config "$startdir"/$_config || return 1
}

build() {
	cd "$srcdir"/build
	export GCC_SPECS=/usr/share/gcc/hardenednopie.specs
	make CC="${CC:-gcc}" \
		KBUILD_BUILD_VERSION="$((pkgrel + 1 ))-Alpine" \
		|| return 1
}

package() {
	cd "$srcdir"/build
	mkdir -p "$pkgdir"/boot "$pkgdir"/lib/modules
	make -j1 modules_install install \
		INSTALL_MOD_PATH="$pkgdir" \
		INSTALL_PATH="$pkgdir"/boot \
		|| return 1

	rm -rf "$pkgdir"/lib/modules/*/build \
		"$pkgdir"/lib/modules/*/source
	rm -rf "$pkgdir"/lib/firmware

	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
}

md5sums="967f72983655e2479f951195953e8480  linux-3.4.tar.xz
adb183c04b48eb1276abcae46858dc29  patch-3.4.45.xz
45c7f894c242dfb02c9d9485b252a98f  patch-3.4.45-vs2.3.3.9.diff
17038c80855fa0131db7021225184844  kernelconfig.x86
ca6fce288664a05fed7c91883cf96dde  kernelconfig.x86_64"
sha256sums="ff3dee6a855873d12487a6f4070ec2f7996d073019171361c955639664baa0c6  linux-3.4.tar.xz
1eee23dc5a2f6a2448030e4d89e8d2883037c10cfd38eb1d59ee1d8848202ca4  patch-3.4.45.xz
ab0de3bf5e4c381fb55d7494426bbf4a32a56d5002e6cf99c8a9451e4b0a0a6e  patch-3.4.45-vs2.3.3.9.diff
d5b45035e40e05a7f387027fbfb46fe8cb80f655204d768b937b1b5ff7f28397  kernelconfig.x86
b6c68df7f4e6a7571839857c18896580da0393369aa7f4d4ee88182309e12376  kernelconfig.x86_64"
sha512sums="1c49b336750c9c2b49d21e54126f22a800367296be0d57e6df28b1532cbeba7fc3bdf4cfe27d9810576e76c2db2e9c2493f0804451c915137cb78d7aa61f236c  linux-3.4.tar.xz
3a7abeae48a6731d76165071f76e83f67a88705de0f6fef88d1dd901e50e8776406d610256aab91f2650176f46ec3fef6e25196c9b25b969b8ba0293728d0b36  patch-3.4.45.xz
8c3b9d0d93abdd9821595a849a7fae070147ed5013e2b6f31e8a659642586affef5f038fbed5696e447e145a5b0c2a339e7a2479b8579ea953766b9b712df8be  patch-3.4.45-vs2.3.3.9.diff
08d8cf139e3833631f3c53276ace72741fd9dfef99df2a0a8b0d8204222c3715788ee33d1601bdd27ba39aa9352a2ce8e23bdfde5c60a4a8b82eeea77aadae32  kernelconfig.x86
766f93ef3e2d9ee131811a85179bdeb5e090eefa2adea4fc813f57b275016f37f7b9baf8761177c2431c38da2e0f421f92c08f5156195280f297296b0aa6acf0  kernelconfig.x86_64"