[patch] Implement qemu-binfmt for systemd

f1c8e99b8e25619f9fa2e7c800fa1af9953101e8.patch (text/plain), 31.84 KB, created by Mike Gilbert on 2016-04-04 22:30:41 UTC

From f1c8e99b8e25619f9fa2e7c800fa1af9953101e8 Mon Sep 17 00:00:00 2001
From: Mike Gilbert <[e-mail]>
Date: Mon, 4 Apr 2016 18:08:43 -0400
Subject: [PATCH] app-emulation/qemu: Implement qemu-binfmt for systemd

Bug: https://bugs.gentoo.org/544150
---
 app-emulation/qemu/files/qemu-binfmt-helper   | 123 +++++
 app-emulation/qemu/files/qemu-binfmt.initd-r2 |  46 ++
 app-emulation/qemu/files/qemu-binfmt.service  |   8 +
 app-emulation/qemu/qemu-2.5.0-r4.ebuild       | 699 ++++++++++++++++++++++++++
 4 files changed, 876 insertions(+)
 create mode 100644 app-emulation/qemu/files/qemu-binfmt-helper
 create mode 100644 app-emulation/qemu/files/qemu-binfmt.initd-r2
 create mode 100644 app-emulation/qemu/files/qemu-binfmt.service
 create mode 100644 app-emulation/qemu/qemu-2.5.0-r4.ebuild

diff --git a/app-emulation/qemu/files/qemu-binfmt-helper b/app-emulation/qemu/files/qemu-binfmt-helper
new file mode 100644
index 0000000..aaf1325
--- /dev/null
+++ b/app-emulation/qemu/files/qemu-binfmt-helper
@@ -0,0 +1,123 @@
+#!/bin/sh
+# Copyright 1999-2016 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+# $Id$
+
+# enable automatic i386/ARM/M68K/MIPS/SPARC/PPC/s390 program execution by the kernel
+
+# Defaulting to OC should be safe because it comes down to:
+#  - do we trust the interp itself to not be malicious?  yes; we built it.
+#  - do we trust the programs we're running?  ish; same permission as native
+#	 binaries apply.  so if user can do bad stuff natively, cross isn't worse.
+: ${QEMU_BINFMT_FLAGS:=OC}
+
+start() {
+	[ -f /proc/sys/fs/binfmt_misc/register ] || return
+
+	# probe cpu type
+	cpu=`uname -m`
+	case "$cpu" in
+		i386|i486|i586|i686|i86pc|BePC|x86_64)
+			cpu="i386"
+			;;
+		m68k)
+			cpu="m68k"
+			;;
+		mips*)
+			cpu="mips"
+		;;
+		"Power Macintosh"|ppc|ppc64)
+			cpu="ppc"
+		;;
+		armv[4-9]*)
+			cpu="arm"
+		;;
+		sparc*)
+			cpu="sparc"
+		;;
+	esac
+
+	# register the interpreter for each cpu except for the native one
+	if [ $cpu != "i386" -a -x "/usr/bin/qemu-i386" ] ; then
+		echo ':i386:M::\x7fELF\x01\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x03\x00:\xff\xff\xff\xff\xff\xfe\xfe\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff:/usr/bin/qemu-i386:'"${QEMU_BINFMT_FLAGS}" > /proc/sys/fs/binfmt_misc/register
+		echo ':i486:M::\x7fELF\x01\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x06\x00:\xff\xff\xff\xff\xff\xfe\xfe\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff:/usr/bin/qemu-i386:'"${QEMU_BINFMT_FLAGS}" > /proc/sys/fs/binfmt_misc/register
+	fi
+	if [ $cpu != "alpha" -a -x "/usr/bin/qemu-alpha" ] ; then
+		echo ':alpha:M::\x7fELF\x02\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x26\x90:\xff\xff\xff\xff\xff\xfe\xfe\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff:/usr/bin/qemu-alpha:'"${QEMU_BINFMT_FLAGS}" > /proc/sys/fs/binfmt_misc/register
+	fi
+	if [ $cpu != "arm" -a -x "/usr/bin/qemu-arm" ] ; then
+		echo	':arm:M::\x7fELF\x01\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x28\x00:\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\x00\xff\xfe\xff\xff\xff:/usr/bin/qemu-arm:'"${QEMU_BINFMT_FLAGS}" > /proc/sys/fs/binfmt_misc/register
+	fi
+	if [ $cpu != "arm" -a -x "/usr/bin/qemu-armeb" ] ; then
+		echo	':armeb:M::\x7fELF\x01\x02\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x28:\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff:/usr/bin/qemu-armeb:'"${QEMU_BINFMT_FLAGS}" > /proc/sys/fs/binfmt_misc/register
+	fi
+	if [ $cpu != "aarch64" -a -x "/usr/bin/qemu-aarch64" ] ; then
+		echo ':aarch64:M::\x7fELF\x02\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\xb7\x00:\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff:/usr/bin/qemu-aarch64:'"${QEMU_BINFMT_FLAGS}" > /proc/sys/fs/binfmt_misc/register
+	fi
+	if [ $cpu != "sparc" -a -x "/usr/bin/qemu-sparc" ] ; then
+		echo	':sparc:M::\x7fELF\x01\x02\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x02:\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff:/usr/bin/qemu-sparc:'"${QEMU_BINFMT_FLAGS}" > /proc/sys/fs/binfmt_misc/register
+	fi
+	if [ $cpu != "ppc" -a -x "/usr/bin/qemu-ppc" ] ; then
+		echo	':ppc:M::\x7fELF\x01\x02\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x14:\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff:/usr/bin/qemu-ppc:'"${QEMU_BINFMT_FLAGS}" > /proc/sys/fs/binfmt_misc/register
+	fi
+	if [ $cpu != "m68k" -a -x "/usr/bin/qemu-m68k" ] ; then
+		#echo	'Please check cpu value and header information for m68k!'
+		echo	':m68k:M::\x7fELF\x01\x02\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x04\x00\x08:\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff:/usr/bin/qemu-m68k:'"${QEMU_BINFMT_FLAGS}" > /proc/sys/fs/binfmt_misc/register
+	fi
+	if [ $cpu != "mips" -a -x "/usr/bin/qemu-mips" ] ; then
+		# FIXME: We could use the other endianness on a MIPS host.
+		echo	':mips:M::\x7fELF\x01\x02\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x08:\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff:/usr/bin/qemu-mips:'"${QEMU_BINFMT_FLAGS}" > /proc/sys/fs/binfmt_misc/register
+	fi
+	if [ $cpu != "mips" -a -x "/usr/bin/qemu-mipsel" ] ; then
+		echo	':mipsel:M::\x7fELF\x01\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x08\x00:\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff:/usr/bin/qemu-mipsel:'"${QEMU_BINFMT_FLAGS}" > /proc/sys/fs/binfmt_misc/register
+	fi
+	if [ $cpu != "mips" -a -x "/usr/bin/qemu-mipsn32" ] ; then
+		echo	':mipsn32:M::\x7fELF\x01\x02\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x08:\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff:/usr/bin/qemu-mipsn32:'"${QEMU_BINFMT_FLAGS}" > /proc/sys/fs/binfmt_misc/register
+	fi
+	if [ $cpu != "mips" -a -x "/usr/bin/qemu-mipsn32el" ] ; then
+		echo	':mipsn32el:M::\x7fELF\x01\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x08\x00:\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff:/usr/bin/qemu-mipsn32el:'"${QEMU_BINFMT_FLAGS}" > /proc/sys/fs/binfmt_misc/register
+	fi
+	if [ $cpu != "mips" -a -x "/usr/bin/qemu-mips64" ] ; then
+		echo	':mips64:M::\x7fELF\x02\x02\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x08:\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff:/usr/bin/qemu-mips64:'"${QEMU_BINFMT_FLAGS}" > /proc/sys/fs/binfmt_misc/register
+	fi
+	if [ $cpu != "mips" -a -x "/usr/bin/qemu-mips64el" ] ; then
+		echo	':mips64el:M::\x7fELF\x02\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x08\x00:\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff:/usr/bin/qemu-mips64el:'"${QEMU_BINFMT_FLAGS}" > /proc/sys/fs/binfmt_misc/register
+	fi
+	if [ $cpu != "sh" -a -x "/usr/bin/qemu-sh4" ] ; then
+		echo	 ':sh4:M::\x7fELF\x01\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x2a\x00:\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff:/usr/bin/qemu-sh4:'"${QEMU_BINFMT_FLAGS}" > /proc/sys/fs/binfmt_misc/register
+	fi
+	if [ $cpu != "sh" -a -x "/usr/bin/qemu-sh4eb" ] ; then
+		echo	 ':sh4eb:M::\x7fELF\x01\x02\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x2a:\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff:/usr/bin/qemu-sh4eb:'"${QEMU_BINFMT_FLAGS}" > /proc/sys/fs/binfmt_misc/register
+	fi
+	if [ $cpu != "s390x" -a -x "/usr/bin/qemu-s390x" ] ; then
+		echo	':s390x:M::\x7fELF\x02\x02\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x16:\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff:/usr/bin/qemu-s390x:'"${QEMU_BINFMT_FLAGS}" > /proc/sys/fs/binfmt_misc/register
+	fi
+}
+
+stop() {
+	local arches
+
+	arches="${arches} i386 i486"
+	arches="${arches} alpha"
+	arches="${arches} arm armeb"
+	arches="${arches} aarch64"
+	arches="${arches} sparc"
+	arches="${arches} ppc"
+	arches="${arches} m68k"
+	arches="${arches} mips mipsel mipsn32 mipsn32el mips64 mips64el"
+	arches="${arches} sh4 sh4eb"
+	arches="${arches} s390x"
+
+	for a in ${arches}; do
+		if [ -f /proc/sys/fs/binfmt_misc/$a ] ; then
+			echo '-1' > /proc/sys/fs/binfmt_misc/$a
+		fi
+	done
+}
+
+case "$1" in
+	start|stop) "$1" ;;
+	*) exit 1 ;;
+esac
+
+# vim: ts=4 :
diff --git a/app-emulation/qemu/files/qemu-binfmt.initd-r2 b/app-emulation/qemu/files/qemu-binfmt.initd-r2
new file mode 100644
index 0000000..d09c819
--- /dev/null
+++ b/app-emulation/qemu/files/qemu-binfmt.initd-r2
@@ -0,0 +1,46 @@
+#!/sbin/runscript
+# Copyright 1999-2016 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+# $Id$
+
+# enable automatic i386/ARM/M68K/MIPS/SPARC/PPC/s390 program execution by the kernel
+
+# Defaulting to OC should be safe because it comes down to:
+#  - do we trust the interp itself to not be malicious?  yes; we built it.
+#  - do we trust the programs we're running?  ish; same permission as native
+#	 binaries apply.  so if user can do bad stuff natively, cross isn't worse.
+: ${QEMU_BINFMT_FLAGS:=OC}
+
+depend() {
+	 after procfs
+}
+
+start() {
+	ebegin "Registering qemu-user binaries (flags: ${QEMU_BINFMT_FLAGS})"
+
+	if [ ! -d /proc/sys/fs/binfmt_misc ] ; then
+		modprobe -q binfmt_misc
+	fi
+
+	if [ ! -d /proc/sys/fs/binfmt_misc ] ; then
+		 eend $? "You need support for 'misc binaries' in your kernel!" || return
+	fi
+
+	if [ ! -f /proc/sys/fs/binfmt_misc/register ] ; then
+		mount -t binfmt_misc binfmt_misc /proc/sys/fs/binfmt_misc >/dev/null 2>&1
+		eend $? || return
+	fi
+
+	export QEMU_BINFMT_FLAGS
+	/usr/libexec/qemu-binfmt-helper start
+
+	eend $?
+}
+
+stop() {
+	ebegin "Unregistering qemu-user binaries"
+	/usr/libexec/qemu-binfmt-helper stop
+	eend $?
+}
+
+# vim: ts=4 :
diff --git a/app-emulation/qemu/files/qemu-binfmt.service b/app-emulation/qemu/files/qemu-binfmt.service
new file mode 100644
index 0000000..7e1720e
--- /dev/null
+++ b/app-emulation/qemu/files/qemu-binfmt.service
@@ -0,0 +1,8 @@
+[Unit]
+Description=Register qemu-user binaries
+
+[Service]
+Type=oneshot
+RemainAfterExit=true
+ExecStart=/usr/libexec/qemu-binfmt-helper start
+ExecStop=/usr/libexec/qemu-binfmt-helper stop
diff --git a/app-emulation/qemu/qemu-2.5.0-r4.ebuild b/app-emulation/qemu/qemu-2.5.0-r4.ebuild
new file mode 100644
index 0000000..d0d0b98
--- /dev/null
+++ b/app-emulation/qemu/qemu-2.5.0-r4.ebuild
@@ -0,0 +1,699 @@
+# Copyright 1999-2016 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+# $Id$
+
+EAPI=5
+
+PYTHON_COMPAT=( python2_7 )
+PYTHON_REQ_USE="ncurses,readline"
+
+PLOCALES="de_DE fr_FR hu it tr zh_CN"
+
+inherit eutils flag-o-matic linux-info toolchain-funcs multilib python-r1 \
+	user udev fcaps readme.gentoo pax-utils l10n systemd
+
+BACKPORTS=
+
+if [[ ${PV} = *9999* ]]; then
+	EGIT_REPO_URI="git://git.qemu.org/qemu.git"
+	inherit git-2
+	SRC_URI=""
+else
+	SRC_URI="http://wiki.qemu-project.org/download/${P}.tar.bz2
+	${BACKPORTS:+
+		https://dev.gentoo.org/~cardoe/distfiles/${P}-${BACKPORTS}.tar.xz}"
+	KEYWORDS="amd64 ~arm64 ~ppc ~ppc64 x86 ~x86-fbsd"
+fi
+
+DESCRIPTION="QEMU + Kernel-based Virtual Machine userland tools"
+HOMEPAGE="http://www.qemu.org http://www.linux-kvm.org"
+
+LICENSE="GPL-2 LGPL-2 BSD-2"
+SLOT="0"
+IUSE="accessibility +aio alsa bluetooth +caps +curl debug +fdt glusterfs \
+gnutls gtk gtk2 infiniband iscsi +jpeg \
+kernel_linux kernel_FreeBSD lzo ncurses nfs nls numa opengl +pin-upstream-blobs
++png pulseaudio python \
+rbd sasl +seccomp sdl sdl2 selinux smartcard snappy spice ssh static static-softmmu
+static-user systemtap tci test +threads usb usbredir +uuid vde +vhost-net \
+virgl virtfs +vnc vte xattr xen xfs"
+
+COMMON_TARGETS="aarch64 alpha arm cris i386 m68k microblaze microblazeel mips
+mips64 mips64el mipsel or32 ppc ppc64 s390x sh4 sh4eb sparc sparc64 unicore32
+x86_64"
+IUSE_SOFTMMU_TARGETS="${COMMON_TARGETS} lm32 moxie ppcemb tricore xtensa xtensaeb"
+IUSE_USER_TARGETS="${COMMON_TARGETS} armeb mipsn32 mipsn32el ppc64abi32 ppc64le sparc32plus tilegx"
+
+use_softmmu_targets=$(printf ' qemu_softmmu_targets_%s' ${IUSE_SOFTMMU_TARGETS})
+use_user_targets=$(printf ' qemu_user_targets_%s' ${IUSE_USER_TARGETS})
+IUSE+=" ${use_softmmu_targets} ${use_user_targets}"
+
+# Allow no targets to be built so that people can get a tools-only build.
+# Block USE flag configurations known to not work.
+REQUIRED_USE="${PYTHON_REQUIRED_USE}
+	gtk2? ( gtk )
+	qemu_softmmu_targets_arm? ( fdt )
+	qemu_softmmu_targets_microblaze? ( fdt )
+	qemu_softmmu_targets_ppc? ( fdt )
+	qemu_softmmu_targets_ppc64? ( fdt )
+	sdl2? ( sdl )
+	static? ( static-softmmu static-user )
+	static-softmmu? ( !alsa !pulseaudio !bluetooth !opengl !gtk !gtk2 )
+	virtfs? ( xattr )
+	vte? ( gtk )"
+
+# Yep, you need both libcap and libcap-ng since virtfs only uses libcap.
+#
+# The attr lib isn't always linked in (although the USE flag is always
+# respected).  This is because qemu supports using the C library's API
+# when available rather than always using the extranl library.
+#
+# Older versions of gnutls are supported, but it's simpler to just require
+# the latest versions.  This is also why we require nettle.
+COMMON_LIB_DEPEND=">=dev-libs/glib-2.0[static-libs(+)]
+	sys-libs/zlib[static-libs(+)]
+	xattr? ( sys-apps/attr[static-libs(+)] )"
+SOFTMMU_LIB_DEPEND="${COMMON_LIB_DEPEND}
+	>=x11-libs/pixman-0.28.0[static-libs(+)]
+	accessibility? ( app-accessibility/brltty[static-libs(+)] )
+	aio? ( dev-libs/libaio[static-libs(+)] )
+	alsa? ( >=media-libs/alsa-lib-1.0.13 )
+	bluetooth? ( net-wireless/bluez )
+	caps? ( sys-libs/libcap-ng[static-libs(+)] )
+	curl? ( >=net-misc/curl-7.15.4[static-libs(+)] )
+	fdt? ( >=sys-apps/dtc-1.4.0[static-libs(+)] )
+	glusterfs? ( >=sys-cluster/glusterfs-3.4.0[static-libs(+)] )
+	gnutls? (
+		dev-libs/nettle[static-libs(+)]
+		>=net-libs/gnutls-3.0[static-libs(+)]
+	)
+	gtk? (
+		gtk2? (
+			x11-libs/gtk+:2
+			vte? ( x11-libs/vte:0 )
+		)
+		!gtk2? (
+			x11-libs/gtk+:3
+			vte? ( x11-libs/vte:2.90 )
+		)
+	)
+	infiniband? ( sys-infiniband/librdmacm:=[static-libs(+)] )
+	iscsi? ( net-libs/libiscsi )
+	jpeg? ( virtual/jpeg:=[static-libs(+)] )
+	lzo? ( dev-libs/lzo:2[static-libs(+)] )
+	ncurses? ( sys-libs/ncurses:0=[static-libs(+)] )
+	nfs? ( >=net-fs/libnfs-1.9.3[static-libs(+)] )
+	numa? ( sys-process/numactl[static-libs(+)] )
+	opengl? (
+		virtual/opengl
+		media-libs/libepoxy[static-libs(+)]
+		media-libs/mesa[static-libs(+)]
+		media-libs/mesa[egl,gles2]
+	)
+	png? ( media-libs/libpng:0=[static-libs(+)] )
+	pulseaudio? ( media-sound/pulseaudio )
+	rbd? ( sys-cluster/ceph[static-libs(+)] )
+	sasl? ( dev-libs/cyrus-sasl[static-libs(+)] )
+	sdl? (
+		!sdl2? (
+			media-libs/libsdl[X]
+			>=media-libs/libsdl-1.2.11[static-libs(+)]
+		)
+		sdl2? (
+			media-libs/libsdl2[X]
+			media-libs/libsdl2[static-libs(+)]
+		)
+	)
+	seccomp? ( >=sys-libs/libseccomp-2.1.0[static-libs(+)] )
+	smartcard? ( >=app-emulation/libcacard-2.5.0[static-libs(+)] )
+	snappy? ( app-arch/snappy[static-libs(+)] )
+	spice? (
+		>=app-emulation/spice-protocol-0.12.3
+		>=app-emulation/spice-0.12.0[static-libs(+)]
+	)
+	ssh? ( >=net-libs/libssh2-1.2.8[static-libs(+)] )
+	usb? ( >=virtual/libusb-1-r2[static-libs(+)] )
+	usbredir? ( >=sys-apps/usbredir-0.6[static-libs(+)] )
+	uuid? ( >=sys-apps/util-linux-2.16.0[static-libs(+)] )
+	vde? ( net-misc/vde[static-libs(+)] )
+	virgl? ( media-libs/virglrenderer[static-libs(+)] )
+	virtfs? ( sys-libs/libcap )
+	xfs? ( sys-fs/xfsprogs[static-libs(+)] )"
+USER_LIB_DEPEND="${COMMON_LIB_DEPEND}"
+X86_FIRMWARE_DEPEND="
+	>=sys-firmware/ipxe-1.0.0_p20130624
+	pin-upstream-blobs? (
+		~sys-firmware/seabios-1.8.2
+		~sys-firmware/sgabios-0.1_pre8
+		~sys-firmware/vgabios-0.7a
+	)
+	!pin-upstream-blobs? (
+		sys-firmware/seabios
+		sys-firmware/sgabios
+		sys-firmware/vgabios
+	)"
+CDEPEND="
+	!static-softmmu? ( $(printf "%s? ( ${SOFTMMU_LIB_DEPEND//\[static-libs(+)]} ) " ${use_softmmu_targets}) )
+	!static-user? ( $(printf "%s? ( ${USER_LIB_DEPEND//\[static-libs(+)]} ) " ${use_user_targets}) )
+	qemu_softmmu_targets_i386? ( ${X86_FIRMWARE_DEPEND} )
+	qemu_softmmu_targets_x86_64? ( ${X86_FIRMWARE_DEPEND} )
+	python? ( ${PYTHON_DEPS} )
+	systemtap? ( dev-util/systemtap )
+	xen? ( app-emulation/xen-tools:= )"
+DEPEND="${CDEPEND}
+	dev-lang/perl
+	=dev-lang/python-2*
+	sys-apps/texinfo
+	virtual/pkgconfig
+	kernel_linux? ( >=sys-kernel/linux-headers-2.6.35 )
+	gtk? ( nls? ( sys-devel/gettext ) )
+	static-softmmu? ( $(printf "%s? ( ${SOFTMMU_LIB_DEPEND} ) " ${use_softmmu_targets}) )
+	static-user? ( $(printf "%s? ( ${USER_LIB_DEPEND} ) " ${use_user_targets}) )
+	test? (
+		dev-libs/glib[utils]
+		sys-devel/bc
+	)"
+RDEPEND="${CDEPEND}
+	selinux? ( sec-policy/selinux-qemu )
+"
+
+STRIP_MASK="/usr/share/qemu/palcode-clipper"
+
+QA_PREBUILT="
+	usr/share/qemu/openbios-ppc
+	usr/share/qemu/openbios-sparc64
+	usr/share/qemu/openbios-sparc32
+	usr/share/qemu/palcode-clipper
+	usr/share/qemu/s390-ccw.img
+	usr/share/qemu/u-boot.e500
+"
+
+QA_WX_LOAD="usr/bin/qemu-i386
+	usr/bin/qemu-x86_64
+	usr/bin/qemu-alpha
+	usr/bin/qemu-arm
+	usr/bin/qemu-cris
+	usr/bin/qemu-m68k
+	usr/bin/qemu-microblaze
+	usr/bin/qemu-microblazeel
+	usr/bin/qemu-mips
+	usr/bin/qemu-mipsel
+	usr/bin/qemu-or32
+	usr/bin/qemu-ppc
+	usr/bin/qemu-ppc64
+	usr/bin/qemu-ppc64abi32
+	usr/bin/qemu-sh4
+	usr/bin/qemu-sh4eb
+	usr/bin/qemu-sparc
+	usr/bin/qemu-sparc64
+	usr/bin/qemu-armeb
+	usr/bin/qemu-sparc32plus
+	usr/bin/qemu-s390x
+	usr/bin/qemu-unicore32"
+
+DOC_CONTENTS="If you don't have kvm compiled into the kernel, make sure
+you have the kernel module loaded before running kvm. The easiest way to
+ensure that the kernel module is loaded is to load it on boot.\n
+For AMD CPUs the module is called 'kvm-amd'\n
+For Intel CPUs the module is called 'kvm-intel'\n
+Please review /etc/conf.d/modules for how to load these\n\n
+Make sure your user is in the 'kvm' group\n
+Just run 'gpasswd -a <USER> kvm', then have <USER> re-login."
+
+qemu_support_kvm() {
+	if use qemu_softmmu_targets_x86_64 || use qemu_softmmu_targets_i386 \
+		use qemu_softmmu_targets_ppc || use qemu_softmmu_targets_ppc64 \
+		use qemu_softmmu_targets_s390x; then
+		return 0
+	fi
+
+	return 1
+}
+
+pkg_pretend() {
+	if use kernel_linux && kernel_is lt 2 6 25; then
+		eerror "This version of KVM requres a host kernel of 2.6.25 or higher."
+	elif use kernel_linux; then
+		if ! linux_config_exists; then
+			eerror "Unable to check your kernel for KVM support"
+		else
+			CONFIG_CHECK="~KVM ~TUN ~BRIDGE"
+			ERROR_KVM="You must enable KVM in your kernel to continue"
+			ERROR_KVM_AMD="If you have an AMD CPU, you must enable KVM_AMD in"
+			ERROR_KVM_AMD+=" your kernel configuration."
+			ERROR_KVM_INTEL="If you have an Intel CPU, you must enable"
+			ERROR_KVM_INTEL+=" KVM_INTEL in your kernel configuration."
+			ERROR_TUN="You will need the Universal TUN/TAP driver compiled"
+			ERROR_TUN+=" into your kernel or loaded as a module to use the"
+			ERROR_TUN+=" virtual network device if using -net tap."
+			ERROR_BRIDGE="You will also need support for 802.1d"
+			ERROR_BRIDGE+=" Ethernet Bridging for some network configurations."
+			use vhost-net && CONFIG_CHECK+=" ~VHOST_NET"
+			ERROR_VHOST_NET="You must enable VHOST_NET to have vhost-net"
+			ERROR_VHOST_NET+=" support"
+
+			if use amd64 || use x86 || use amd64-linux || use x86-linux; then
+				CONFIG_CHECK+=" ~KVM_AMD ~KVM_INTEL"
+			fi
+
+			use python && CONFIG_CHECK+=" ~DEBUG_FS"
+			ERROR_DEBUG_FS="debugFS support required for kvm_stat"
+
+			# Now do the actual checks setup above
+			check_extra_config
+		fi
+	fi
+
+	if grep -qs '/usr/bin/qemu-kvm' "${EROOT}"/etc/libvirt/qemu/*.xml; then
+		eerror "The kvm/qemu-kvm wrappers no longer exist, but your libvirt"
+		eerror "instances are still pointing to it.  Please update your"
+		eerror "configs in /etc/libvirt/qemu/ to use the -enable-kvm flag"
+		eerror "and the right system binary (e.g. qemu-system-x86_64)."
+		die "update your virt configs to not use qemu-kvm"
+	fi
+}
+
+pkg_setup() {
+	enewgroup kvm 78
+}
+
+# Sanity check to make sure target lists are kept up-to-date.
+check_targets() {
+	local var=$1 mak=$2
+	local detected sorted
+
+	pushd "${S}"/default-configs >/dev/null || die
+
+	# Force C locale until glibc is updated. #564936
+	detected=$(echo $(printf '%s\n' *-${mak}.mak | sed "s:-${mak}.mak::" | LC_COLLATE=C sort -u))
+	sorted=$(echo $(printf '%s\n' ${!var} | LC_COLLATE=C sort -u))
+	if [[ ${sorted} != "${detected}" ]] ; then
+		eerror "The ebuild needs to be kept in sync."
+		eerror "${var}: ${sorted}"
+		eerror "$(printf '%-*s' ${#var} configure): ${detected}"
+		die "sync ${var} to the list of targets"
+	fi
+
+	popd >/dev/null
+}
+
+handle_locales() {
+	# Make sure locale list is kept up-to-date.
+	local detected sorted
+	detected=$(echo $(cd po && printf '%s\n' *.po | grep -v messages.po | sed 's:.po$::' | sort -u))
+	sorted=$(echo $(printf '%s\n' ${PLOCALES} | sort -u))
+	if [[ ${sorted} != "${detected}" ]] ; then
+		eerror "The ebuild needs to be kept in sync."
+		eerror "PLOCALES: ${sorted}"
+		eerror " po/*.po: ${detected}"
+		die "sync PLOCALES"
+	fi
+
+	# Deal with selective install of locales.
+	if use nls ; then
+		# Delete locales the user does not want. #577814
+		rm_loc() { rm po/$1.po || die; }
+		l10n_for_each_disabled_locale_do rm_loc
+	else
+		# Cheap hack to disable gettext .mo generation.
+		rm -f po/*.po
+	fi
+}
+
+src_prepare() {
+	check_targets IUSE_SOFTMMU_TARGETS softmmu
+	check_targets IUSE_USER_TARGETS linux-user
+
+	# Alter target makefiles to accept CFLAGS set via flag-o
+	sed -i -r \
+		-e 's/^(C|OP_C|HELPER_C)FLAGS=/\1FLAGS+=/' \
+		Makefile Makefile.target || die
+
+	epatch "${FILESDIR}"/qemu-2.5.0-cflags.patch
+	[[ -n ${BACKPORTS} ]] && \
+		EPATCH_FORCE=yes EPATCH_SUFFIX="patch" EPATCH_SOURCE="${S}/patches" \
+			epatch
+
+	epatch "${FILESDIR}"/${P}-CVE-2015-8567.patch #567868
+	epatch "${FILESDIR}"/${P}-CVE-2015-8558.patch #568246
+	epatch "${FILESDIR}"/${P}-CVE-2015-8701.patch #570110
+	epatch "${FILESDIR}"/${P}-CVE-2015-8743.patch #570988
+	epatch "${FILESDIR}"/${P}-CVE-2016-1568.patch #571566
+	epatch "${FILESDIR}"/${P}-CVE-2015-8613.patch #569118
+	epatch "${FILESDIR}"/${P}-CVE-2015-8619.patch #569300
+	epatch "${FILESDIR}"/${P}-CVE-2016-1714.patch #571560
+	epatch "${FILESDIR}"/${P}-CVE-2016-1922.patch #572082
+	epatch "${FILESDIR}"/${P}-CVE-2016-1981.patch #572412
+	epatch "${FILESDIR}"/${P}-usb-ehci-oob.patch #572454
+	epatch "${FILESDIR}"/${P}-CVE-2016-2197.patch #573280
+	epatch "${FILESDIR}"/${P}-CVE-2016-2198.patch #573314
+	epatch "${FILESDIR}"/${P}-CVE-2016-2392.patch #574902
+	epatch "${FILESDIR}"/${P}-usb-ndis-int-overflow.patch #575492
+	epatch "${FILESDIR}"/${P}-rng-stack-corrupt-{0,1,2,3}.patch #576420
+	epatch "${FILESDIR}"/${P}-sysmacros.patch
+	epatch "${FILESDIR}"/${P}-ne2000-reg-check.patch #573816
+	epatch "${FILESDIR}"/${P}-9pfs-segfault.patch #578142
+
+	# Fix ld and objcopy being called directly
+	tc-export AR LD OBJCOPY
+
+	# Verbose builds
+	MAKEOPTS+=" V=1"
+
+	epatch_user
+
+	# Run after we've applied all patches.
+	handle_locales
+}
+
+##
+# configures qemu based on the build directory and the build type
+# we are using.
+#
+qemu_src_configure() {
+	debug-print-function ${FUNCNAME} "$@"
+
+	local buildtype=$1
+	local builddir="${S}/${buildtype}-build"
+	local static_flag="static-${buildtype}"
+
+	mkdir "${builddir}"
+
+	local conf_opts=(
+		--prefix=/usr
+		--sysconfdir=/etc
+		--libdir=/usr/$(get_libdir)
+		--docdir=/usr/share/doc/${PF}/html
+		--disable-bsd-user
+		--disable-guest-agent
+		--disable-strip
+		--disable-werror
+		# We support gnutls/nettle for crypto operations.  It is possible
+		# to use gcrypt when gnutls/nettle are disabled (but not when they
+		# are enabled), but it's not really worth the hassle.  Disable it
+		# all the time to avoid automatically detecting it. #568856
+		--disable-gcrypt
+		--python="${PYTHON}"
+		--cc="$(tc-getCC)"
+		--cxx="$(tc-getCXX)"
+		--host-cc="$(tc-getBUILD_CC)"
+		$(use_enable debug debug-info)
+		$(use_enable debug debug-tcg)
+		--enable-docs
+		$(use_enable tci tcg-interpreter)
+		$(use_enable xattr attr)
+	)
+
+	# Disable options not used by user targets as the default configure
+	# options will autoprobe and try to link in a bunch of unused junk.
+	conf_softmmu() {
+		if [[ ${buildtype} == "user" ]] ; then
+			echo "--disable-${2:-$1}"
+		else
+			use_enable "$@"
+		fi
+	}
+	conf_opts+=(
+		$(conf_softmmu accessibility brlapi)
+		$(conf_softmmu aio linux-aio)
+		$(conf_softmmu bluetooth bluez)
+		$(conf_softmmu caps cap-ng)
+		$(conf_softmmu curl)
+		$(conf_softmmu fdt)
+		$(conf_softmmu glusterfs)
+		$(conf_softmmu gnutls)
+		$(conf_softmmu gnutls nettle)
+		$(conf_softmmu gtk)
+		$(conf_softmmu infiniband rdma)
+		$(conf_softmmu iscsi libiscsi)
+		$(conf_softmmu jpeg vnc-jpeg)
+		$(conf_softmmu kernel_linux kvm)
+		$(conf_softmmu lzo)
+		$(conf_softmmu ncurses curses)
+		$(conf_softmmu nfs libnfs)
+		$(conf_softmmu numa)
+		$(conf_softmmu opengl)
+		$(conf_softmmu png vnc-png)
+		$(conf_softmmu rbd)
+		$(conf_softmmu sasl vnc-sasl)
+		$(conf_softmmu sdl)
+		$(conf_softmmu seccomp)
+		$(conf_softmmu smartcard)
+		$(conf_softmmu snappy)
+		$(conf_softmmu spice)
+		$(conf_softmmu ssh libssh2)
+		$(conf_softmmu usb libusb)
+		$(conf_softmmu usbredir usb-redir)
+		$(conf_softmmu uuid)
+		$(conf_softmmu vde)
+		$(conf_softmmu vhost-net)
+		$(conf_softmmu virgl virglrenderer)
+		$(conf_softmmu virtfs)
+		$(conf_softmmu vnc)
+		$(conf_softmmu vte)
+		$(conf_softmmu xen)
+		$(conf_softmmu xen xen-pci-passthrough)
+		$(conf_softmmu xfs xfsctl)
+	)
+
+	case ${buildtype} in
+	user)
+		conf_opts+=(
+			--enable-linux-user
+			--disable-system
+			--disable-blobs
+			--disable-tools
+		)
+		;;
+	softmmu)
+		# audio options
+		local audio_opts="oss"
+		use alsa && audio_opts="alsa,${audio_opts}"
+		use sdl && audio_opts="sdl,${audio_opts}"
+		use pulseaudio && audio_opts="pa,${audio_opts}"
+
+		conf_opts+=(
+			--disable-linux-user
+			--enable-system
+			--with-system-pixman
+			--audio-drv-list="${audio_opts}"
+		)
+		use gtk && conf_opts+=( --with-gtkabi=$(usex gtk2 2.0 3.0) )
+		use sdl && conf_opts+=( --with-sdlabi=$(usex sdl2 2.0 1.2) )
+		;;
+	tools)
+		conf_opts+=(
+			--disable-linux-user
+			--disable-system
+			--disable-blobs
+		)
+		static_flag="static"
+		;;
+	esac
+
+	local targets="${buildtype}_targets"
+	[[ -n ${targets} ]] && conf_opts+=( --target-list="${!targets}" )
+
+	# Add support for SystemTAP
+	use systemtap && conf_opts+=( --enable-trace-backend=dtrace )
+
+	# We always want to attempt to build with PIE support as it results
+	# in a more secure binary. But it doesn't work with static or if
+	# the current GCC doesn't have PIE support.
+	if use ${static_flag}; then
+		conf_opts+=( --static --disable-pie )
+	else
+		gcc-specs-pie && conf_opts+=( --enable-pie )
+	fi
+
+	echo "../configure ${conf_opts[*]}"
+	cd "${builddir}"
+	../configure "${conf_opts[@]}" || die "configure failed"
+
+	# FreeBSD's kernel does not support QEMU assigning/grabbing
+	# host USB devices yet
+	use kernel_FreeBSD && \
+		sed -i -E -e "s|^(HOST_USB=)bsd|\1stub|" "${S}"/config-host.mak
+}
+
+src_configure() {
+	local target
+
+	python_setup
+
+	softmmu_targets= softmmu_bins=()
+	user_targets= user_bins=()
+
+	for target in ${IUSE_SOFTMMU_TARGETS} ; do
+		if use "qemu_softmmu_targets_${target}"; then
+			softmmu_targets+=",${target}-softmmu"
+			softmmu_bins+=( "qemu-system-${target}" )
+		fi
+	done
+
+	for target in ${IUSE_USER_TARGETS} ; do
+		if use "qemu_user_targets_${target}"; then
+			user_targets+=",${target}-linux-user"
+			user_bins+=( "qemu-${target}" )
+		fi
+	done
+
+	softmmu_targets=${softmmu_targets#,}
+	user_targets=${user_targets#,}
+
+	[[ -n ${softmmu_targets} ]] && qemu_src_configure "softmmu"
+	[[ -n ${user_targets}    ]] && qemu_src_configure "user"
+	[[ -z ${softmmu_targets}${user_targets} ]] && qemu_src_configure "tools"
+}
+
+src_compile() {
+	if [[ -n ${user_targets} ]]; then
+		cd "${S}/user-build"
+		default
+	fi
+
+	if [[ -n ${softmmu_targets} ]]; then
+		cd "${S}/softmmu-build"
+		default
+	fi
+
+	if [[ -z ${softmmu_targets}${user_targets} ]]; then
+		cd "${S}/tools-build"
+		default
+	fi
+}
+
+src_test() {
+	if [[ -n ${softmmu_targets} ]]; then
+		cd "${S}/softmmu-build"
+		pax-mark m */qemu-system-* #515550
+		emake -j1 check
+		emake -j1 check-report.html
+	fi
+}
+
+qemu_python_install() {
+	python_domodule "${S}/scripts/qmp/qmp.py"
+
+	python_doscript "${S}/scripts/kvm/kvm_stat"
+	python_doscript "${S}/scripts/kvm/vmxcap"
+	python_doscript "${S}/scripts/qmp/qmp-shell"
+	python_doscript "${S}/scripts/qmp/qemu-ga-client"
+}
+
+src_install() {
+	if [[ -n ${user_targets} ]]; then
+		cd "${S}/user-build"
+		emake DESTDIR="${ED}" install
+
+		# Install binfmt handler init script for user targets
+		exeinto /usr/libexec
+		doexe "${FILESDIR}"/qemu-binfmt-helper
+		newinitd "${FILESDIR}/qemu-binfmt.initd-r2" qemu-binfmt
+		systemd_dounit "${FILESDIR}"/qemu-binfmt.service
+	fi
+
+	if [[ -n ${softmmu_targets} ]]; then
+		cd "${S}/softmmu-build"
+		emake DESTDIR="${ED}" install
+
+		# This might not exist if the test failed. #512010
+		[[ -e check-report.html ]] && dohtml check-report.html
+
+		if use kernel_linux; then
+			udev_dorules "${FILESDIR}"/65-kvm.rules
+		fi
+
+		if use python; then
+			python_foreach_impl qemu_python_install
+		fi
+	fi
+
+	if [[ -z ${softmmu_targets}${user_targets} ]]; then
+		cd "${S}/tools-build"
+		emake DESTDIR="${ED}" install
+	fi
+
+	# Disable mprotect on the qemu binaries as they use JITs to be fast #459348
+	pushd "${ED}"/usr/bin >/dev/null
+	pax-mark m "${softmmu_bins[@]}" "${user_bins[@]}"
+	popd >/dev/null
+
+	# Install config file example for qemu-bridge-helper
+	insinto "/etc/qemu"
+	doins "${FILESDIR}/bridge.conf"
+
+	# Remove the docdir placed qmp-commands.txt
+	mv "${ED}/usr/share/doc/${PF}/html/qmp-commands.txt" "${S}/docs/" || die
+
+	cd "${S}"
+	dodoc Changelog MAINTAINERS docs/specs/pci-ids.txt
+	newdoc pc-bios/README README.pc-bios
+	dodoc docs/qmp-*.txt
+
+	if [[ -n ${softmmu_targets} ]]; then
+		# Remove SeaBIOS since we're using the SeaBIOS packaged one
+		rm "${ED}/usr/share/qemu/bios.bin"
+		if use qemu_softmmu_targets_x86_64 || use qemu_softmmu_targets_i386; then
+			dosym ../seabios/bios.bin /usr/share/qemu/bios.bin
+		fi
+
+		# Remove vgabios since we're using the vgabios packaged one
+		rm "${ED}/usr/share/qemu/vgabios.bin"
+		rm "${ED}/usr/share/qemu/vgabios-cirrus.bin"
+		rm "${ED}/usr/share/qemu/vgabios-qxl.bin"
+		rm "${ED}/usr/share/qemu/vgabios-stdvga.bin"
+		rm "${ED}/usr/share/qemu/vgabios-vmware.bin"
+		if use qemu_softmmu_targets_x86_64 || use qemu_softmmu_targets_i386; then
+			dosym ../vgabios/vgabios.bin /usr/share/qemu/vgabios.bin
+			dosym ../vgabios/vgabios-cirrus.bin /usr/share/qemu/vgabios-cirrus.bin
+			dosym ../vgabios/vgabios-qxl.bin /usr/share/qemu/vgabios-qxl.bin
+			dosym ../vgabios/vgabios-stdvga.bin /usr/share/qemu/vgabios-stdvga.bin
+			dosym ../vgabios/vgabios-vmware.bin /usr/share/qemu/vgabios-vmware.bin
+		fi
+
+		# Remove sgabios since we're using the sgabios packaged one
+		rm "${ED}/usr/share/qemu/sgabios.bin"
+		if use qemu_softmmu_targets_x86_64 || use qemu_softmmu_targets_i386; then
+			dosym ../sgabios/sgabios.bin /usr/share/qemu/sgabios.bin
+		fi
+
+		# Remove iPXE since we're using the iPXE packaged one
+		rm "${ED}"/usr/share/qemu/pxe-*.rom
+		if use qemu_softmmu_targets_x86_64 || use qemu_softmmu_targets_i386; then
+			dosym ../ipxe/8086100e.rom /usr/share/qemu/pxe-e1000.rom
+			dosym ../ipxe/80861209.rom /usr/share/qemu/pxe-eepro100.rom
+			dosym ../ipxe/10500940.rom /usr/share/qemu/pxe-ne2k_pci.rom
+			dosym ../ipxe/10222000.rom /usr/share/qemu/pxe-pcnet.rom
+			dosym ../ipxe/10ec8139.rom /usr/share/qemu/pxe-rtl8139.rom
+			dosym ../ipxe/1af41000.rom /usr/share/qemu/pxe-virtio.rom
+		fi
+	fi
+
+	qemu_support_kvm && readme.gentoo_create_doc
+}
+
+pkg_postinst() {
+	if qemu_support_kvm; then
+		readme.gentoo_print_elog
+	fi
+
+	if [[ -n ${softmmu_targets} ]] && use kernel_linux; then
+		udev_reload
+	fi
+
+	fcaps cap_net_admin /usr/libexec/qemu-bridge-helper
+}
+
+pkg_info() {
+	echo "Using:"
+	echo "  $(best_version app-emulation/spice-protocol)"
+	echo "  $(best_version sys-firmware/ipxe)"
+	echo "  $(best_version sys-firmware/seabios)"
+	if has_version 'sys-firmware/seabios[binary]'; then
+		echo "    USE=binary"
+	else
+		echo "    USE=''"
+	fi
+	echo "  $(best_version sys-firmware/vgabios)"
+}