app-emulation/xen: add security patches

Fixes XSA-360

Signed-off-by: Tomáš Mózes <hydrapolic@gmail.com>
Closes: https://github.com/gentoo/gentoo/pull/19128
Signed-off-by: Thomas Deutschmann <whissi@gentoo.org>

2 files changed, 166 insertions, 0 deletions

diff --git a/app-emulation/xen/Manifest b/app-emulation/xen/Manifest
index 0706230d1764..12ad42c89e0e 100644
--- a/app-emulation/xen/Manifest
+++ b/app-emulation/xen/Manifest
@@ -1,5 +1,6 @@
 DIST xen-4.13.2-upstream-patches-1.tar.xz 15832 BLAKE2B 4e20a1e2d575ed7e1d21f3b34ed0d8bf6e1405cb39cc5c6ffc099614ea833ac9794bfcfcdea0893fdf81b318f536017ac3a023ad096bc8a8c7390c01f1d513ed SHA512 48dda9dadec1e87fb7b6952636e73057f6e0a5501f9727d05ac636fd47747194501db709c8ffa7154e79b6b612a98b658a03bc083c5065ff851ac57f454b599e
 DIST xen-4.13.2-upstream-patches-2.tar.xz 58992 BLAKE2B 535d67ae6a30e23feb975172a9e4abd6d7feb6c8c969aa243fdf672ed6580fe46bf57ea5530eab70457e22af9163f95061fdf97d10faa3be9f4c92033187c950 SHA512 6b6cdf72d13c0e595be65e3107c0f68299e932b74d4a1c4d59bfe3be8b76840c47f6adeaddd0efac71d5158cee8d778a0be863eea8f032cb9acf4191f629d8ae
+DIST xen-4.13.2-upstream-patches-3.tar.xz 63660 BLAKE2B 80abc9529ff49e782b64d4b5032f724e7d95fd255c2a06b7065c693d5765e1db1df44ebd5ce00c5a1e1ff24e1e5d344b0c2e459c68282e58fa20963e208272d2 SHA512 35288a1feac1316c33586dad55685e2c6a30100795e31852f78455003ce3dd6906074bea023655ee545a97fe4a0a8ad9a05ab91fd83186e61e5b57d10aa6b155
 DIST xen-4.13.2.tar.gz 39037826 BLAKE2B ad2b7c3003ca29e5e60a85c581f706ef87d99eadf939ed36ebe8f6698582f7a29dbdaf502039b60a0afe7ad4ae6ce89713e69dc8b8a7d5abe65063da7f1baa5b SHA512 cd3092281c97e9421e303aa288aac04dcccd5536ba7c0ff4d51fbf3d07b5ffacfe3456ba06f5cf63577dafbf8cf3a5d9825ceb5e9ef8ca1427900cc3e57b50a3
 DIST xen-4.14.0-upstream-patches-6.tar.xz 119116 BLAKE2B e3a0f807182d32754c6ae2000324237117cfa66c4a43c27b583b6aef69a3889949779751b71a87b2538f679fb481e8a723433950c689f28a8c2e96278c1b0ddb SHA512 03b1fdc08e74756001fbb0de4e21297456f63615e6f63b8f360f8270ef85b0d50c3872be41cc26529ed0d91d82ffda2af53882b7c5233113f223a4ec813a0d5b
 DIST xen-4.14.0.tar.gz 39950576 BLAKE2B db4c3e79cfdfb10260d0d14d9d28e8c8bd9bf23f42aee743acf8f560bf4cdb96a425c0df887c70f9755f62680be24bfbe0149e52a4cb843ae83090cd9d6afc71 SHA512 ebce47a2f754955d8517123d69f62006634d97620fbbe3784869a0667466e586a249f57ffaf7846d5bcb45d69377cde43354c82c233fbb5407e55653b9a33ac0
diff --git a/app-emulation/xen/xen-4.13.2-r4.ebuild b/app-emulation/xen/xen-4.13.2-r4.ebuild
new file mode 100644
index 000000000000..448b93a8ce2c
--- /dev/null
+++ b/app-emulation/xen/xen-4.13.2-r4.ebuild
@@ -0,0 +1,165 @@
+# Copyright 1999-2020 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+PYTHON_COMPAT=( python3_{6..9} )
+
+inherit flag-o-matic mount-boot multilib python-any-r1 toolchain-funcs
+
+MY_PV=${PV/_/-}
+MY_P=${PN}-${MY_PV}
+
+if [[ $PV == *9999 ]]; then
+	inherit git-r3
+	EGIT_REPO_URI="git://xenbits.xen.org/xen.git"
+	SRC_URI=""
+else
+	KEYWORDS="~amd64 ~arm -x86"
+	UPSTREAM_VER=3
+	SECURITY_VER=
+	GENTOO_VER=
+
+	[[ -n ${UPSTREAM_VER} ]] && \
+		UPSTREAM_PATCHSET_URI="https://dev.gentoo.org/~dlan/distfiles/${P}-upstream-patches-${UPSTREAM_VER}.tar.xz
+		https://github.com/hydrapolic/gentoo-dist/raw/master/xen/${P}-upstream-patches-${UPSTREAM_VER}.tar.xz"
+	[[ -n ${SECURITY_VER} ]] && \
+		SECURITY_PATCHSET_URI="https://dev.gentoo.org/~dlan/distfiles/${PN}-security-patches-${SECURITY_VER}.tar.xz"
+	[[ -n ${GENTOO_VER} ]] && \
+		GENTOO_PATCHSET_URI="https://dev.gentoo.org/~dlan/distfiles/${PN}-gentoo-patches-${GENTOO_VER}.tar.xz"
+	SRC_URI="https://downloads.xenproject.org/release/xen/${MY_PV}/${MY_P}.tar.gz
+		${UPSTREAM_PATCHSET_URI}
+		${SECURITY_PATCHSET_URI}
+		${GENTOO_PATCHSET_URI}"
+fi
+
+DESCRIPTION="The Xen virtual machine monitor"
+HOMEPAGE="https://www.xenproject.org"
+LICENSE="GPL-2"
+SLOT="0"
+IUSE="debug efi flask"
+
+DEPEND="${PYTHON_DEPS}
+	efi? ( >=sys-devel/binutils-2.22[multitarget] )
+	!efi? ( >=sys-devel/binutils-2.22 )"
+RDEPEND=""
+PDEPEND="~app-emulation/xen-tools-${PV}"
+
+# no tests are available for the hypervisor
+# prevent the silliness of /usr/lib/debug/usr/lib/debug files
+# prevent stripping of the debug info from the /usr/lib/debug/xen-syms
+RESTRICT="test splitdebug strip"
+
+# Approved by QA team in bug #144032
+QA_WX_LOAD="boot/xen-syms-${PV}"
+
+REQUIRED_USE="arm? ( debug )"
+
+S="${WORKDIR}/${MY_P}"
+
+pkg_setup() {
+	python-any-r1_pkg_setup
+	if [[ -z ${XEN_TARGET_ARCH} ]]; then
+		if use amd64; then
+			export XEN_TARGET_ARCH="x86_64"
+		elif use arm; then
+			export XEN_TARGET_ARCH="arm32"
+		elif use arm64; then
+			export XEN_TARGET_ARCH="arm64"
+		else
+			die "Unsupported architecture!"
+		fi
+	fi
+
+	if use flask ; then
+		export "XSM_ENABLE=y"
+		export "FLASK_ENABLE=y"
+	fi
+}
+
+src_prepare() {
+	# Upstream's patchset
+	[[ -n ${UPSTREAM_VER} ]] && eapply "${WORKDIR}"/patches-upstream
+
+	# Security patchset
+	if [[ -n ${SECURITY_VER} ]]; then
+	einfo "Try to apply Xen Security patch set"
+		# apply main xen patches
+		# Two parallel systems, both work side by side
+		# Over time they may concdense into one. This will suffice for now
+		source "${WORKDIR}"/patches-security/${PV}.conf
+
+		local i
+		for i in ${XEN_SECURITY_MAIN}; do
+			eapply "${WORKDIR}"/patches-security/xen/$i
+		done
+	fi
+
+	# Gentoo's patchset
+	[[ -n ${GENTOO_VER} ]] && eapply "${WORKDIR}"/patches-gentoo
+
+	eapply "${FILESDIR}"/${PN}-4.11-efi.patch
+
+	# Drop .config
+	sed -e '/-include $(XEN_ROOT)\/.config/d' -i Config.mk || die "Couldn't	drop"
+
+	if use efi; then
+		export EFI_VENDOR="gentoo"
+		export EFI_MOUNTPOINT="/boot"
+	fi
+
+	default
+}
+
+src_configure() {
+	use arm && myopt="${myopt} CONFIG_EARLY_PRINTK=sun7i"
+
+	use debug && myopt="${myopt} debug=y"
+
+	# remove flags
+	unset CFLAGS
+	unset LDFLAGS
+	unset ASFLAGS
+
+	tc-ld-disable-gold # Bug 700374
+}
+
+src_compile() {
+	# Send raw LDFLAGS so that --as-needed works
+	emake V=1 CC="$(tc-getCC)" LDFLAGS="$(raw-ldflags)" LD="$(tc-getLD)" -C xen ${myopt}
+}
+
+src_install() {
+	local myopt
+	use debug && myopt="${myopt} debug=y"
+
+	# The 'make install' doesn't 'mkdir -p' the subdirs
+	if use efi; then
+		mkdir -p "${D}"${EFI_MOUNTPOINT}/efi/${EFI_VENDOR} || die
+	fi
+
+	emake LDFLAGS="$(raw-ldflags)" DESTDIR="${D}" -C xen ${myopt} install
+
+	# make install likes to throw in some extra EFI bits if it built
+	use efi || rm -rf "${D}/usr/$(get_libdir)/efi"
+}
+
+pkg_postinst() {
+	elog "Official Xen Guide:"
+	elog " https://wiki.gentoo.org/wiki/Xen"
+
+	use efi && einfo "The efi executable is installed in /boot/efi/gentoo"
+
+	elog "You can optionally block the installation of /boot/xen-syms by an entry"
+	elog "in folder /etc/portage/env using the portage's feature INSTALL_MASK"
+	elog "e.g. echo ${msg} > /etc/portage/env/xen.conf"
+
+	ewarn
+	ewarn "Xen 4.12+ changed the default scheduler to credit2 which can cause"
+	ewarn "domU lockups on multi-cpu systems. The legacy credit scheduler seems"
+	ewarn "to work fine."
+	ewarn
+	ewarn "Add sched=credit to xen command line options to use the legacy scheduler."
+	ewarn
+	ewarn "https://wiki.gentoo.org/wiki/Xen#Xen_domU_hanging_with_Xen_4.12.2B"
+}