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

_flavor=vanilla
pkgname=linux-${_flavor}
pkgver=4.1.19
case $pkgver in
	*.*.*)	_kernver=${pkgver%.*};;
	*.*) _kernver=$pkgver;;
esac
pkgrel=1
pkgdesc="Linux vanilla kernel"
url="http://kernel.org"
depends="mkinitfs linux-firmware"
makedepends="perl sed installkernel bash gmp-dev bc linux-headers"
options="!strip"
_config=${config:-config-vanilla.${CARCH}}
install=
source="http://ftp.kernel.org/pub/linux/kernel/v${pkgver%%.*}.x/linux-$_kernver.tar.xz
	xsa155-linux-xsa155-0001-xen-Add-RING_COPY_REQUEST.patch
	xsa155-linux-xsa155-0002-xen-netback-don-t-use-last-request-to-determine-mini.patch
	xsa155-linux-xsa155-0003-xen-netback-use-RING_COPY_REQUEST-throughout.patch
	xsa155-linux-xsa155-0004-xen-blkback-only-read-request-operation-from-shared-.patch
	xsa155-linux-xsa155-0006-xen-scsiback-safely-copy-requests.patch
	xsa155-linux-xsa155-0007-xen-pciback-Save-xen_pci_op-commands-before-processi.patch
	xsa155-linux43-0005-xen-blkback-read-from-indirect-descriptors-only-once.patch

	config-vanilla.armhf
	config-vanilla.x86
	config-vanilla.x86_64
	"

if [ "${pkgver%.0}" = "$pkgver" ]; then
	source="$source
	http://ftp.kernel.org/pub/linux/kernel/v${pkgver%%.*}.x/patch-$pkgver.xz"
fi
subpackages="$pkgname-dev"
arch="all"
license="GPL2"

_abi_release=${pkgver}

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

	# first apply patches in specified order
	for i in $source; do
		case $i in
		*.patch)
			msg "Applying $i..."
			if ! patch -s -p1 -N -i "$srcdir"/$i; then
				echo $i >>failed
				_patch_failed=1
			fi
			;;
		esac
	done

	if ! [ -z "$_patch_failed" ]; then
		error "The following patches failed:"
		cat failed
		return 1
	fi

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

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

package() {
	cd "$srcdir"/build

	mkdir -p "$pkgdir"/boot "$pkgdir"/lib/modules

	local _install
	case "$CARCH" in
	arm*)
		local _dtbdir="$pkgdir"/usr/lib/linux-${_abi_release}
		mkdir -p "$_dtbdir"
		for i in arch/arm/boot/dts/*.dtb ; do
			install -m644 "$i" "$_dtbdir"
		done

		_install=zinstall
		;;
	*)
		_install=install
		;;
	esac

	make -j1 modules_install firmware_install $_install \
		INSTALL_MOD_PATH="$pkgdir" \
		INSTALL_PATH="$pkgdir"/boot \
		|| return 1

	rm -f "$pkgdir"/lib/modules/${_abi_release}/build \
		"$pkgdir"/lib/modules/${_abi_release}/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"
	depends="gmp-dev"
	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 modules_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="fe9dc0f6729f36400ea81aa41d614c37  linux-4.1.tar.xz
7139ce0106f489a71474b2196cd70edc  xsa155-linux-xsa155-0001-xen-Add-RING_COPY_REQUEST.patch
484f3e18e22f6b7c06dabaaf5d5ed274  xsa155-linux-xsa155-0002-xen-netback-don-t-use-last-request-to-determine-mini.patch
0bf4e9b42ff4c7feb968ab0e5b4a8be0  xsa155-linux-xsa155-0003-xen-netback-use-RING_COPY_REQUEST-throughout.patch
f57e383a744db7ea6eb64d6a9e6fd5b0  xsa155-linux-xsa155-0004-xen-blkback-only-read-request-operation-from-shared-.patch
6b41c3dbec8f4897bc9014d2a1ed9e66  xsa155-linux-xsa155-0006-xen-scsiback-safely-copy-requests.patch
170b688697ab5a854f01d9d64d71098e  xsa155-linux-xsa155-0007-xen-pciback-Save-xen_pci_op-commands-before-processi.patch
70ae93ddef7c9832ecde037c81009099  xsa155-linux43-0005-xen-blkback-read-from-indirect-descriptors-only-once.patch
e62cb3ba9b8ecf9570af15267564b792  config-vanilla.armhf
11febdc146c8b65d21f2c1876b3f8557  config-vanilla.x86
eb7b9e0627d3b31501e9e8341a0d4c3b  config-vanilla.x86_64
efde85f5c01e3e8045149b5246e37c85  patch-4.1.19.xz"
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3916b847243047f0e1053233ade742c14a7f29243584e60bf5db4842a8068855  xsa155-linux-xsa155-0003-xen-netback-use-RING_COPY_REQUEST-throughout.patch
746c8eb0aeb200d76156c88dfbbd49db79f567b88b07eda70f7c7d095721f05a  xsa155-linux-xsa155-0004-xen-blkback-only-read-request-operation-from-shared-.patch
2e6d556d25b1cc16e71afde665ae3908f4fa8eab7e0d96283fc78400301baf92  xsa155-linux-xsa155-0006-xen-scsiback-safely-copy-requests.patch
5e130d8b61906015c6a94f8edd3cce97b172f96a265d97ecf370e7b45125b73d  xsa155-linux-xsa155-0007-xen-pciback-Save-xen_pci_op-commands-before-processi.patch
590656d83ad7b6052b54659eccb3469658b3942c0dc1366423a66f2f5ac643e1  xsa155-linux43-0005-xen-blkback-read-from-indirect-descriptors-only-once.patch
ee0a30271ac60670854ae79819982edfd55b5d9401b88683524f25c7a47d81d0  config-vanilla.armhf
b4e59eaeebdb5f38a9ab4ced0cf92d01fbd63eb1cc61771d64478e6af416eb47  config-vanilla.x86
d43b342a46cf6514b134b232a8724790c4973f40285de3bc817ed541a8044fcc  config-vanilla.x86_64
be12d828fd185db6f51c261dd41b2bf30e866ee85d2e2c166c3035d8084f7b8e  patch-4.1.19.xz"
sha512sums="168ef84a4e67619f9f53f3574e438542a5747f9b43443363cb83597fcdac9f40d201625c66e375a23226745eaada9176eb006ca023613cec089349e91751f3c0  linux-4.1.tar.xz
a8a0a152638f9125274f9933c90cf2459b941ac5f6b860dcba1f35179eaa8f303eb7c392da360f423534c015ffba8818fb79fdb4a7b82a65d42415a7bd2beeb2  xsa155-linux-xsa155-0001-xen-Add-RING_COPY_REQUEST.patch
e85369cec62f0b249362930bf32e03f277cfc7d9844e5250b5fd73a22dcc09720f1920bb5c5f1063a4ee51a146fe9c8eb5f180b58a41cd833916904fdc230e90  xsa155-linux-xsa155-0002-xen-netback-don-t-use-last-request-to-determine-mini.patch
8814d694c2196ee4c8bcf52522622c56a166e6b77b414e9298190f23ed86c1e205410d3ba257a323d008c59df25496e2161d828bc99a34d445430115769495a8  xsa155-linux-xsa155-0003-xen-netback-use-RING_COPY_REQUEST-throughout.patch
a79f354c4e82c0eefc9b346215a2e993508f139095a197565aa5c56b1e0981f06c66c4796d0fd97800ac25f1ff21f6921cb25a7dd455254fb446cf6845d8e0a3  xsa155-linux-xsa155-0004-xen-blkback-only-read-request-operation-from-shared-.patch
7640585542d6970d2d35d728091c770daab7ea24c4a5d61e268d27b4b4bc9742d5fa04a11cbff9ac890376397f0b39f693e433639325470f6e39cea7a283810e  xsa155-linux-xsa155-0006-xen-scsiback-safely-copy-requests.patch
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2c5246a7c0a8fb19b8adf70162501f0af111ad3d1816e6719ae61b28c2b11565b1bd7a82c04ab50dce1ed88ec2259de0903222976d8cdf4b17ad1e5002e101bd  xsa155-linux43-0005-xen-blkback-read-from-indirect-descriptors-only-once.patch
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