commit:     55bb42729114274069f2c4d46cfbf7317c58c0f9
Author:     Sergei Trofimovich <slyfox <AT> gentoo <DOT> org>
AuthorDate: Thu Jul  9 22:55:34 2020 +0000
Commit:     Sergei Trofimovich <slyfox <AT> gentoo <DOT> org>
CommitDate: Thu Jul  9 22:55:34 2020 +0000
URL:        https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=55bb4272

app-emulation/qemu: backport slirp ipv6 fix: CVE-2020-10756

Reported-by: John Helmert III (ajak)
Bug: https://bugs.gentoo.org/731992
Package-Manager: Portage-2.3.103, Repoman-2.3.23
Signed-off-by: Sergei Trofimovich <slyfox <AT> gentoo.org>

 .../qemu-5.0.0-ipv6-slirp-CVE-2020-10756.patch     |  35 +
 app-emulation/qemu/qemu-5.0.0-r1.ebuild            | 838 +++++++++++++++++++++
 2 files changed, 873 insertions(+)

diff --git 
a/app-emulation/qemu/files/qemu-5.0.0-ipv6-slirp-CVE-2020-10756.patch 
b/app-emulation/qemu/files/qemu-5.0.0-ipv6-slirp-CVE-2020-10756.patch
new file mode 100644
index 00000000000..d1d3c49a58f
--- /dev/null
+++ b/app-emulation/qemu/files/qemu-5.0.0-ipv6-slirp-CVE-2020-10756.patch
@@ -0,0 +1,35 @@
+https://gitlab.freedesktop.org/slirp/libslirp/-/commit/c7ede54cbd2e2b25385325600958ba0124e31cc0
+https://bugzilla.redhat.com/show_bug.cgi?id=1835986
+https://bugs.gentoo.org/731992
+
+From c7ede54cbd2e2b25385325600958ba0124e31cc0 Mon Sep 17 00:00:00 2001
+From: Ralf Haferkamp <rha...@suse.com>
+Date: Fri, 3 Jul 2020 14:51:16 +0200
+Subject: [PATCH] Drop bogus IPv6 messages
+
+Drop IPv6 message shorter than what's mentioned in the payload
+length header (+ the size of the IPv6 header). They're invalid an could
+lead to data leakage in icmp6_send_echoreply().
+---
+ src/ip6_input.c | 7 +++++++
+ 1 file changed, 7 insertions(+)
+
+--- a/slirp/src/ip6_input.c
++++ b/slirp/src/ip6_input.c
+@@ -49,6 +49,13 @@ void ip6_input(struct mbuf *m)
+         goto bad;
+     }
+ 
++    // Check if the message size is big enough to hold what's
++    // set in the payload length header. If not this is an invalid
++    // packet
++    if (m->m_len < ntohs(ip6->ip_pl) + sizeof(struct ip6)) {
++        goto bad;
++    }
++
+     /* check ip_ttl for a correct ICMP reply */
+     if (ip6->ip_hl == 0) {
+         icmp6_send_error(m, ICMP6_TIMXCEED, ICMP6_TIMXCEED_INTRANS);
+-- 
+GitLab
+

diff --git a/app-emulation/qemu/qemu-5.0.0-r1.ebuild 
b/app-emulation/qemu/qemu-5.0.0-r1.ebuild
new file mode 100644
index 00000000000..0cfa9836a83
--- /dev/null
+++ b/app-emulation/qemu/qemu-5.0.0-r1.ebuild
@@ -0,0 +1,838 @@
+# Copyright 1999-2020 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI="7"
+
+PYTHON_COMPAT=( python{3_6,3_7,3_8} )
+PYTHON_REQ_USE="ncurses,readline"
+
+PLOCALES="bg de_DE fr_FR hu it tr zh_CN"
+
+FIRMWARE_ABI_VERSION="4.0.0-r50"
+
+inherit eutils linux-info toolchain-funcs multilib python-r1 \
+       udev fcaps readme.gentoo-r1 pax-utils l10n xdg-utils
+
+if [[ ${PV} = *9999* ]]; then
+       EGIT_REPO_URI="https://git.qemu.org/git/qemu.git";
+       EGIT_SUBMODULES=(
+               slirp
+               tests/fp/berkeley-{test,soft}float-3
+               ui/keycodemapdb
+       )
+       inherit git-r3
+       SRC_URI=""
+else
+       SRC_URI="https://download.qemu.org/${P}.tar.xz";
+       KEYWORDS="~amd64 ~arm64 ~ppc ~ppc64 ~x86"
+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 bzip2 capstone +caps +curl debug doc
+       +fdt glusterfs gnutls gtk infiniband iscsi io-uring
+       jemalloc +jpeg kernel_linux
+       kernel_FreeBSD lzo ncurses nfs nls numa opengl +oss +pin-upstream-blobs
+       plugins +png pulseaudio python rbd sasl +seccomp sdl sdl-image selinux
+       smartcard snappy spice ssh static static-user systemtap tci test usb
+       usbredir vde +vhost-net vhost-user-fs virgl virtfs +vnc vte xattr xen
+       xfs +xkb zstd"
+
+COMMON_TARGETS="aarch64 alpha arm cris hppa i386 m68k microblaze microblazeel
+       mips mips64 mips64el mipsel nios2 or1k ppc ppc64 riscv32 riscv64 s390x
+       sh4 sh4eb sparc sparc64 x86_64 xtensa xtensaeb"
+IUSE_SOFTMMU_TARGETS="${COMMON_TARGETS}
+       lm32 moxie rx tricore unicore32"
+IUSE_USER_TARGETS="${COMMON_TARGETS}
+       aarch64_be 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} ${use_user_targets}"
+
+RESTRICT="!test? ( test )"
+# Allow no targets to be built so that people can get a tools-only build.
+# Block USE flag configurations known to not work.
+REQUIRED_USE="${PYTHON_REQUIRED_USE}
+       qemu_softmmu_targets_arm? ( fdt )
+       qemu_softmmu_targets_microblaze? ( fdt )
+       qemu_softmmu_targets_mips64el? ( fdt )
+       qemu_softmmu_targets_ppc64? ( fdt )
+       qemu_softmmu_targets_ppc? ( fdt )
+       qemu_softmmu_targets_riscv32? ( fdt )
+       qemu_softmmu_targets_riscv64? ( fdt )
+       static? ( static-user !alsa !gtk !opengl !pulseaudio !plugins !rbd 
!snappy )
+       static-user? ( !plugins )
+       virtfs? ( xattr )
+       vte? ( gtk )
+       plugins? ( !static !static-user )
+"
+
+# Dependencies required for qemu tools (qemu-nbd, qemu-img, qemu-io, ...)
+# and user/softmmu targets (qemu-*, qemu-system-*).
+#
+# 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 external library.
+ALL_DEPEND="
+       >=dev-libs/glib-2.0[static-libs(+)]
+       sys-libs/zlib[static-libs(+)]
+       python? ( ${PYTHON_DEPS} )
+       systemtap? ( dev-util/systemtap )
+       xattr? ( sys-apps/attr[static-libs(+)] )"
+
+# Dependencies required for qemu tools (qemu-nbd, qemu-img, qemu-io, ...)
+# softmmu targets (qemu-system-*).
+SOFTMMU_TOOLS_DEPEND="
+       dev-libs/libxml2[static-libs(+)]
+       xkb? ( x11-libs/libxkbcommon[static-libs(+)] )
+       >=x11-libs/pixman-0.28.0[static-libs(+)]
+       accessibility? (
+               app-accessibility/brltty[api]
+               app-accessibility/brltty[static-libs(+)]
+       )
+       aio? ( dev-libs/libaio[static-libs(+)] )
+       alsa? ( >=media-libs/alsa-lib-1.0.13 )
+       bzip2? ( app-arch/bzip2[static-libs(+)] )
+       capstone? ( dev-libs/capstone:= )
+       caps? ( sys-libs/libcap-ng[static-libs(+)] )
+       curl? ( >=net-misc/curl-7.15.4[static-libs(+)] )
+       fdt? ( >=sys-apps/dtc-1.5.0[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? (
+               x11-libs/gtk+:3
+               vte? ( x11-libs/vte:2.91 )
+       )
+       infiniband? (
+               sys-fabric/libibumad:=[static-libs(+)]
+               sys-fabric/libibverbs:=[static-libs(+)]
+               sys-fabric/librdmacm:=[static-libs(+)]
+       )
+       iscsi? ( net-libs/libiscsi )
+       io-uring? ( sys-libs/liburing[static-libs(+)] )
+       jemalloc? ( dev-libs/jemalloc )
+       jpeg? ( virtual/jpeg:0=[static-libs(+)] )
+       lzo? ( dev-libs/lzo:2[static-libs(+)] )
+       ncurses? (
+               sys-libs/ncurses:0=[unicode]
+               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,gbm]
+       )
+       png? ( media-libs/libpng:0=[static-libs(+)] )
+       pulseaudio? ( media-sound/pulseaudio )
+       rbd? ( sys-cluster/ceph )
+       sasl? ( dev-libs/cyrus-sasl[static-libs(+)] )
+       sdl? (
+               media-libs/libsdl2[video]
+               media-libs/libsdl2[static-libs(+)]
+       )
+       sdl-image? ( media-libs/sdl2-image[static-libs(+)] )
+       seccomp? ( >=sys-libs/libseccomp-2.1.0[static-libs(+)] )
+       smartcard? ( >=app-emulation/libcacard-2.5.0[static-libs(+)] )
+       snappy? ( app-arch/snappy:= )
+       spice? (
+               >=app-emulation/spice-protocol-0.12.3
+               >=app-emulation/spice-0.12.0[static-libs(+)]
+       )
+       ssh? ( >=net-libs/libssh-0.8.6[static-libs(+)] )
+       usb? ( >=virtual/libusb-1-r2[static-libs(+)] )
+       usbredir? ( >=sys-apps/usbredir-0.6[static-libs(+)] )
+       vde? ( net-misc/vde[static-libs(+)] )
+       virgl? ( media-libs/virglrenderer[static-libs(+)] )
+       virtfs? ( sys-libs/libcap )
+       xen? ( app-emulation/xen-tools:= )
+       xfs? ( sys-fs/xfsprogs[static-libs(+)] )
+       zstd? ( >=app-arch/zstd-1.4.0[static-libs(+)] )
+"
+
+X86_FIRMWARE_DEPEND="
+       pin-upstream-blobs? (
+               ~sys-firmware/edk2-ovmf-201905[binary]
+               ~sys-firmware/ipxe-1.0.0_p20190728[binary]
+               ~sys-firmware/seabios-1.12.0[binary,seavgabios]
+               ~sys-firmware/sgabios-0.1_pre8[binary]
+       )
+       !pin-upstream-blobs? (
+               sys-firmware/edk2-ovmf
+               sys-firmware/ipxe
+               >=sys-firmware/seabios-1.10.2[seavgabios]
+               sys-firmware/sgabios
+       )"
+PPC64_FIRMWARE_DEPEND="
+       pin-upstream-blobs? (
+               ~sys-firmware/seabios-1.12.0[binary,seavgabios]
+       )
+       !pin-upstream-blobs? (
+               >=sys-firmware/seabios-1.10.2[seavgabios]
+       )
+"
+
+BDEPEND="
+       $(python_gen_impl_dep)
+       dev-lang/perl
+       sys-apps/texinfo
+       virtual/pkgconfig
+       doc? ( dev-python/sphinx )
+       gtk? ( nls? ( sys-devel/gettext ) )
+       test? (
+               dev-libs/glib[utils]
+               sys-devel/bc
+       )
+"
+CDEPEND="
+       !static? (
+               ${ALL_DEPEND//\[static-libs(+)]}
+               ${SOFTMMU_TOOLS_DEPEND//\[static-libs(+)]}
+       )
+       qemu_softmmu_targets_i386? ( ${X86_FIRMWARE_DEPEND} )
+       qemu_softmmu_targets_x86_64? ( ${X86_FIRMWARE_DEPEND} )
+       qemu_softmmu_targets_ppc64? ( ${PPC64_FIRMWARE_DEPEND} )
+"
+DEPEND="${CDEPEND}
+       kernel_linux? ( >=sys-kernel/linux-headers-2.6.35 )
+       static? (
+               ${ALL_DEPEND}
+               ${SOFTMMU_TOOLS_DEPEND}
+       )
+       static-user? ( ${ALL_DEPEND} )"
+RDEPEND="${CDEPEND}
+       acct-group/kvm
+       selinux? ( sec-policy/selinux-qemu )"
+
+PATCHES=(
+       "${FILESDIR}"/${PN}-2.11.1-capstone_include_path.patch
+       "${FILESDIR}"/${PN}-4.0.0-mkdir_systemtap.patch #684902
+       "${FILESDIR}"/${PN}-4.2.0-cflags.patch
+       "${FILESDIR}"/${PN}-5.0.0-epoll-strace.patch
+       "${FILESDIR}"/${PN}-5.0.0-ipv6-slirp-CVE-2020-10756.patch #731992
+)
+
+QA_PREBUILT="
+       usr/share/qemu/hppa-firmware.img
+       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/s390-netboot.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-or1k
+       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.
+       For AMD CPUs the module is called 'kvm-amd'.
+       For Intel CPUs the module is called 'kvm-intel'.
+Please review /etc/conf.d/modules for how to load these.
+
+Make sure your user is in the 'kvm' group. Just run
+       $ gpasswd -a <USER> kvm
+then have <USER> re-login.
+
+For brand new installs, the default permissions on /dev/kvm might not let
+you access it.  You can tell udev to reset ownership/perms:
+       $ udevadm trigger -c add /dev/kvm
+
+If you want to register binfmt handlers for qemu user targets:
+For openrc:
+       # rc-update add qemu-binfmt
+For systemd:
+       # ln -s /usr/share/qemu/binfmt.d/qemu.conf /etc/binfmt.d/qemu.conf"
+
+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
+                               if grep -q AuthenticAMD /proc/cpuinfo; then
+                                       CONFIG_CHECK+=" ~KVM_AMD"
+                               elif grep -q GenuineIntel /proc/cpuinfo; then
+                                       CONFIG_CHECK+=" ~KVM_INTEL"
+                               fi
+                       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
+}
+
+# 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/$1.po || die; }
+               l10n_for_each_disabled_locale_do rm_loc
+       else
+               # Cheap hack to disable gettext .mo generation.
+               rm -f po/*.po
+       fi
+}
+
+src_prepare() {
+       check_targets IUSE_SOFTMMU_TARGETS softmmu
+       check_targets IUSE_USER_TARGETS linux-user
+
+       default
+
+       # Use correct toolchain to fix cross-compiling
+       tc-export AR AS LD NM OBJCOPY PKG_CONFIG RANLIB
+       export WINDRES=${CHOST}-windres
+
+       # Verbose builds
+       MAKEOPTS+=" V=1"
+
+       # Run after we've applied all patches.
+       handle_locales
+
+       # Remove bundled copy of libfdt
+       rm -r dtc || die
+}
+
+##
+# 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}/${buildtype}-build"
+
+       mkdir "${builddir}"
+
+       local conf_opts=(
+               --prefix=/usr
+               --sysconfdir=/etc
+               --bindir=/usr/bin
+               --libdir=/usr/$(get_libdir)
+               --datadir=/usr/share
+               --docdir=/usr/share/doc/${PF}/html
+               --mandir=/usr/share/man
+               --with-confsuffix=/qemu
+               --localstatedir=/var
+               --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)
+               $(use_enable doc docs)
+               $(use_enable plugins)
+               $(use_enable tci tcg-interpreter)
+               $(use_enable xattr attr)
+       )
+
+       # Disable options not used by user targets. This simplifies building
+       # static user targets (USE=static-user) considerably.
+       conf_notuser() {
+               if [[ ${buildtype} == "user" ]] ; then
+                       echo "--disable-${2:-$1}"
+               else
+                       use_enable "$@"
+               fi
+       }
+       conf_opts+=(
+               $(conf_notuser accessibility brlapi)
+               $(conf_notuser aio linux-aio)
+               $(conf_notuser bzip2)
+               $(conf_notuser capstone)
+               $(conf_notuser caps cap-ng)
+               $(conf_notuser curl)
+               $(conf_notuser fdt)
+               $(conf_notuser glusterfs)
+               $(conf_notuser gnutls)
+               $(conf_notuser gnutls nettle)
+               $(conf_notuser gtk)
+               $(conf_notuser infiniband rdma)
+               $(conf_notuser iscsi libiscsi)
+               $(conf_notuser io-uring linux-io-uring)
+               $(conf_notuser jemalloc jemalloc)
+               $(conf_notuser jpeg vnc-jpeg)
+               $(conf_notuser kernel_linux kvm)
+               $(conf_notuser lzo)
+               $(conf_notuser ncurses curses)
+               $(conf_notuser nfs libnfs)
+               $(conf_notuser numa)
+               $(conf_notuser opengl)
+               $(conf_notuser png vnc-png)
+               $(conf_notuser rbd)
+               $(conf_notuser sasl vnc-sasl)
+               $(conf_notuser sdl)
+               $(conf_notuser sdl-image)
+               $(conf_notuser seccomp)
+               $(conf_notuser smartcard)
+               $(conf_notuser snappy)
+               $(conf_notuser spice)
+               $(conf_notuser ssh libssh)
+               $(conf_notuser usb libusb)
+               $(conf_notuser usbredir usb-redir)
+               $(conf_notuser vde)
+               $(conf_notuser vhost-net)
+               $(conf_notuser vhost-user-fs)
+               $(conf_notuser virgl virglrenderer)
+               $(conf_notuser virtfs)
+               $(conf_notuser vnc)
+               $(conf_notuser vte)
+               $(conf_notuser xen)
+               $(conf_notuser xen xen-pci-passthrough)
+               $(conf_notuser xfs xfsctl)
+               $(conf_notuser xkb xkbcommon)
+               $(conf_notuser zstd)
+       )
+
+       if [[ ${buildtype} == "user" ]] ; then
+               conf_opts+=( --disable-libxml2 )
+       else
+               conf_opts+=( --enable-libxml2 )
+       fi
+
+       if [[ ! ${buildtype} == "user" ]] ; then
+               # audio options
+               local audio_opts=(
+                       # Note: backend order matters here: #716202
+                       # We iterate from higher-level to lower level.
+                       $(usex pulseaudio pa "")
+                       $(usev sdl)
+                       $(usev alsa)
+                       $(usev oss)
+               )
+               conf_opts+=(
+                       --audio-drv-list=$(printf "%s," "${audio_opts[@]}")
+               )
+       fi
+
+       case ${buildtype} in
+       user)
+               conf_opts+=(
+                       --enable-linux-user
+                       --disable-system
+                       --disable-blobs
+                       --disable-tools
+               )
+               local static_flag="static-user"
+               ;;
+       softmmu)
+               conf_opts+=(
+                       --disable-linux-user
+                       --enable-system
+                       --disable-tools
+               )
+               local static_flag="static"
+               ;;
+       tools)
+               conf_opts+=(
+                       --disable-linux-user
+                       --disable-system
+                       --disable-blobs
+                       --enable-tools
+               )
+               local static_flag="static"
+               ;;
+       esac
+
+       local targets="${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
+               tc-enables-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"
+       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
+
+       cd "${S}/tools-build"
+       default
+}
+
+src_test() {
+       if [[ -n ${softmmu_targets} ]]; then
+               cd "${S}/softmmu-build"
+               pax-mark m */qemu-system-* #515550
+               emake check
+       fi
+}
+
+qemu_python_install() {
+       python_domodule "${S}/python/qemu"
+
+       python_doscript "${S}/scripts/kvm/vmxcap"
+       python_doscript "${S}/scripts/qmp/qmp-shell"
+       python_doscript "${S}/scripts/qmp/qemu-ga-client"
+}
+
+# Generate binfmt support files.
+#   - /etc/init.d/qemu-binfmt script which registers the user handlers (openrc)
+#   - /usr/share/qemu/binfmt.d/qemu.conf (for use with systemd-binfmt)
+generate_initd() {
+       local out="${T}/qemu-binfmt"
+       local out_systemd="${T}/qemu.conf"
+       local d="${T}/binfmt.d"
+
+       einfo "Generating qemu binfmt scripts and configuration files"
+
+       # Generate the debian fragments first.
+       mkdir -p "${d}"
+       "${S}"/scripts/qemu-binfmt-conf.sh \
+               --debian \
+               --exportdir "${d}" \
+               --qemu-path "${EPREFIX}/usr/bin" \
+               || die
+       # Then turn the fragments into a shell script we can source.
+       sed -E -i \
+               -e 's:^([^ ]+) (.*)$:\1="\2":' \
+               "${d}"/* || die
+
+       # Generate the init.d script by assembling the fragments from above.
+       local f qcpu package interpreter magic mask
+       cat "${FILESDIR}"/qemu-binfmt.initd.head >"${out}" || die
+       for f in "${d}"/qemu-* ; do
+               source "${f}"
+
+               # Normalize the cpu logic like we do in the init.d for the 
native cpu.
+               qcpu=${package#qemu-}
+               case ${qcpu} in
+               arm*)   qcpu="arm";;
+               mips*)  qcpu="mips";;
+               ppc*)   qcpu="ppc";;
+               s390*)  qcpu="s390";;
+               sh*)    qcpu="sh";;
+               sparc*) qcpu="sparc";;
+               esac
+
+               # we use 'printf' here to be portable across 'sh'
+               # implementations: #679168
+               cat <<EOF >>"${out}"
+       if [ "\${cpu}" != "${qcpu}" -a -x "${interpreter}" ] ; then
+               printf '%s\n' 
':${package}:M::${magic}:${mask}:${interpreter}:'"\${QEMU_BINFMT_FLAGS}" 
>/proc/sys/fs/binfmt_misc/register
+       fi
+EOF
+
+               echo ":${package}:M::${magic}:${mask}:${interpreter}:OC" 
>>"${out_systemd}"
+
+       done
+       cat "${FILESDIR}"/qemu-binfmt.initd.tail >>"${out}" || die
+}
+
+src_install() {
+       if [[ -n ${user_targets} ]]; then
+               cd "${S}/user-build"
+               emake DESTDIR="${ED}" install
+
+               # Install binfmt handler init script for user targets.
+               generate_initd
+               doinitd "${T}/qemu-binfmt"
+
+               # Install binfmt/qemu.conf.
+               insinto "/usr/share/qemu/binfmt.d"
+               doins "${T}/qemu.conf"
+       fi
+
+       if [[ -n ${softmmu_targets} ]]; then
+               cd "${S}/softmmu-build"
+               emake DESTDIR="${ED}" install
+
+               # This might not exist if the test failed. #512010
+               [[ -e check-report.html ]] && dodoc check-report.html
+
+               if use kernel_linux; then
+                       udev_newrules "${FILESDIR}"/65-kvm.rules-r1 65-kvm.rules
+               fi
+
+               if use python; then
+                       python_foreach_impl qemu_python_install
+               fi
+       fi
+
+       cd "${S}/tools-build"
+       emake DESTDIR="${ED}" install
+
+       # Disable mprotect on the qemu binaries as they use JITs to be fast 
#459348
+       pushd "${ED}"/usr/bin >/dev/null
+       pax-mark mr "${softmmu_bins[@]}" "${user_bins[@]}" # bug 575594
+       popd >/dev/null
+
+       # Install config file example for qemu-bridge-helper
+       insinto "/etc/qemu"
+       doins "${FILESDIR}/bridge.conf"
+
+       cd "${S}"
+       dodoc Changelog MAINTAINERS docs/specs/pci-ids.txt
+       newdoc pc-bios/README README.pc-bios
+
+       # Disallow stripping of prebuilt firmware files.
+       dostrip -x ${QA_PREBUILT}
+
+       if [[ -n ${softmmu_targets} ]]; then
+               # Remove SeaBIOS since we're using the SeaBIOS packaged one
+               rm "${ED}/usr/share/qemu/bios.bin"
+               rm "${ED}/usr/share/qemu/bios-256k.bin"
+               if use qemu_softmmu_targets_x86_64 || use 
qemu_softmmu_targets_i386; then
+                       dosym ../seabios/bios.bin /usr/share/qemu/bios.bin
+                       dosym ../seabios/bios-256k.bin 
/usr/share/qemu/bios-256k.bin
+               fi
+
+               # Remove vgabios since we're using the seavgabios packaged one
+               rm "${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-virtio.bin"
+               rm "${ED}/usr/share/qemu/vgabios-vmware.bin"
+               # PPC64 loads vgabios-stdvga
+               if use qemu_softmmu_targets_x86_64 || use 
qemu_softmmu_targets_i386 || use qemu_softmmu_targets_ppc64; then
+                       dosym ../seavgabios/vgabios-isavga.bin 
/usr/share/qemu/vgabios.bin
+                       dosym ../seavgabios/vgabios-cirrus.bin 
/usr/share/qemu/vgabios-cirrus.bin
+                       dosym ../seavgabios/vgabios-qxl.bin 
/usr/share/qemu/vgabios-qxl.bin
+                       dosym ../seavgabios/vgabios-stdvga.bin 
/usr/share/qemu/vgabios-stdvga.bin
+                       dosym ../seavgabios/vgabios-virtio.bin 
/usr/share/qemu/vgabios-virtio.bin
+                       dosym ../seavgabios/vgabios-vmware.bin 
/usr/share/qemu/vgabios-vmware.bin
+               fi
+
+               # Remove sgabios since we're using the sgabios packaged one
+               rm "${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
+
+       DISABLE_AUTOFORMATTING=true
+       readme.gentoo_create_doc
+}
+
+firmware_abi_change() {
+       local pv
+       for pv in ${REPLACING_VERSIONS}; do
+               if ver_test $pv -lt ${FIRMWARE_ABI_VERSION}; then
+                       return 0
+               fi
+       done
+       return 1
+}
+
+pkg_postinst() {
+       if [[ -n ${softmmu_targets} ]] && use kernel_linux; then
+               udev_reload
+       fi
+
+       xdg_icon_cache_update
+
+       [[ -z ${EPREFIX} ]] && [[ -f ${EROOT}/usr/libexec/qemu-bridge-helper ]] 
&& \
+               fcaps cap_net_admin ${EROOT}/usr/libexec/qemu-bridge-helper
+
+       DISABLE_AUTOFORMATTING=true
+       readme.gentoo_print_elog
+
+       if use pin-upstream-blobs && firmware_abi_change; then
+               ewarn "This version of qemu pins new versions of firmware 
blobs:"
+               ewarn " $(best_version sys-firmware/edk2-ovmf)"
+               ewarn " $(best_version sys-firmware/ipxe)"
+               ewarn " $(best_version sys-firmware/seabios)"
+               ewarn " $(best_version sys-firmware/sgabios)"
+               ewarn "This might break resume of hibernated guests (started 
with a different"
+               ewarn "firmware version) and live migration to/from qemu 
versions with different"
+               ewarn "firmware. Please (cold) restart all running guests. For 
functional"
+               ewarn "guest migration ensure that all"
+               ewarn "hosts run at least"
+               ewarn " app-emulation/qemu-${FIRMWARE_ABI_VERSION}."
+       fi
+}
+
+pkg_info() {
+       echo "Using:"
+       echo "  $(best_version app-emulation/spice-protocol)"
+       echo "  $(best_version sys-firmware/edk2-ovmf)"
+       if has_version 'sys-firmware/edk2-ovmf[binary]'; then
+               echo "    USE=binary"
+       else
+               echo "    USE=''"
+       fi
+       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/sgabios)"
+}
+
+pkg_postrm() {
+       xdg_icon_cache_update
+}

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