net-misc/chrony: add glibc-2.35 seccomp patch

We also add a mawk test patch.

Signed-off-by: Sam James <sam@gentoo.org>

3 files changed, 315 insertions, 0 deletions

diff --git a/net-misc/chrony/chrony-4.2-r1.ebuild b/net-misc/chrony/chrony-4.2-r1.ebuild
new file mode 100644
index 000000000000..9df110347a58
--- /dev/null
+++ b/net-misc/chrony/chrony-4.2-r1.ebuild
@@ -0,0 +1,255 @@
+# Copyright 1999-2022 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+inherit systemd tmpfiles toolchain-funcs
+
+DESCRIPTION="NTP client and server programs"
+HOMEPAGE="https://chrony.tuxfamily.org/ https://git.tuxfamily.org/chrony/chrony.git"
+
+if [[ ${PV} == "9999" ]] ; then
+	EGIT_REPO_URI="https://git.tuxfamily.org/chrony/chrony.git"
+	inherit git-r3
+else
+	VERIFY_SIG_OPENPGP_KEY_PATH=${BROOT}/usr/share/openpgp-keys/mlichvar.asc
+	inherit verify-sig
+
+	SRC_URI="https://download.tuxfamily.org/${PN}/${P/_/-}.tar.gz"
+	SRC_URI+=" verify-sig? ( https://download.tuxfamily.org/chrony/${P/_/-}-tar-gz-asc.txt -> ${P/_/-}.tar.gz.asc )"
+
+	if [[ ${PV} != *_pre* ]] ; then
+		KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~m68k ~mips ~ppc ~ppc64 ~riscv ~sparc ~x86"
+	fi
+fi
+
+S="${WORKDIR}/${P/_/-}"
+
+LICENSE="GPL-2"
+SLOT="0"
+IUSE="+caps +cmdmon debug html ipv6 libedit libtomcrypt +nettle nss +ntp +nts +phc pps +refclock +rtc samba +seccomp +sechash selinux"
+# nettle > nss > libtomcrypt in configure
+REQUIRED_USE="
+	sechash? ( || ( nettle nss libtomcrypt ) )
+	nettle? ( !nss )
+	nss? ( !nettle )
+	libtomcrypt? ( !nettle !nss )
+	!sechash? ( !nss )
+	!sechash? ( !nts? ( !nettle ) )
+"
+
+DEPEND="
+	caps? (
+		acct-group/ntp
+		acct-user/ntp
+		sys-libs/libcap
+	)
+	libedit? ( dev-libs/libedit )
+	!libedit? ( sys-libs/readline:= )
+	nettle? ( dev-libs/nettle:= )
+	nss? ( dev-libs/nss:= )
+	nts? ( net-libs/gnutls:= )
+	pps? ( net-misc/pps-tools )
+	seccomp? ( sys-libs/libseccomp )
+"
+RDEPEND="
+	${DEPEND}
+	selinux? ( sec-policy/selinux-chronyd )
+"
+BDEPEND="
+	html? ( dev-ruby/asciidoctor )
+	nts? ( virtual/pkgconfig )
+	sechash? (
+		nettle? ( virtual/pkgconfig )
+		nss? ( virtual/pkgconfig )
+	)
+"
+
+if [[ ${PV} == "9999" ]] ; then
+	# Needed for doc generation in 9999
+	REQUIRED_USE+=" html"
+	BDEPEND+=" virtual/w3m"
+else
+	BDEPEND+=" verify-sig? ( >=sec-keys/openpgp-keys-mlichvar-20210513 )"
+fi
+
+PATCHES=(
+	"${FILESDIR}"/${PN}-3.5-pool-vendor-gentoo.patch
+	"${FILESDIR}"/${PN}-4.2-systemd-gentoo.patch
+
+	"${FILESDIR}"/${P}-test-mawk.patch
+	"${FILESDIR}"/${P}-seccomp-rseq.patch
+)
+
+src_prepare() {
+	default
+
+	sed -i \
+		-e 's:/etc/chrony\.conf:/etc/chrony/chrony.conf:g' \
+		doc/* examples/* || die
+
+	cp "${FILESDIR}"/chronyd.conf-r3 "${T}"/chronyd.conf || die
+}
+
+src_configure() {
+	if ! use caps ; then
+		sed -i \
+			-e 's/ -u ntp//' \
+			"${T}"/chronyd.conf examples/chronyd.service || die
+	fi
+
+	if ! use seccomp ; then
+		sed -i \
+			-e 's/ -F 2//' \
+			"${T}"/chronyd.conf examples/chronyd.service || die
+	fi
+
+	tc-export CC PKG_CONFIG
+
+	# Update from time to time with output from "date +%s"
+	# on a system that is time-synced.
+	export SOURCE_DATE_EPOCH=1607976314
+
+	# Not an autotools generated script
+	local myconf=(
+		$(use_enable seccomp scfilter)
+
+		$(usex caps '' '--disable-linuxcaps')
+		$(usex cmdmon '' '--disable-cmdmon')
+		$(usex debug '--enable-debug' '')
+		$(usex ipv6 '' '--disable-ipv6')
+		$(usex libedit '' '--without-editline')
+		$(usex libtomcrypt '' '--without-tomcrypt')
+		$(usex nettle '' '--without-nettle')
+		$(usex nss '' '--without-nss')
+		$(usex ntp '' '--disable-ntp')
+		$(usex nts '' '--disable-nts')
+		$(usex nts '' '--without-gnutls')
+		$(usex phc '' '--disable-phc')
+		$(usex pps '' '--disable-pps')
+		$(usex refclock '' '--disable-refclock')
+		$(usex rtc '' '--disable-rtc')
+		$(usex samba '--enable-ntp-signd' '')
+		$(usex sechash '' '--disable-sechash')
+
+		--chronysockdir="${EPREFIX}/run/chrony"
+		--docdir="${EPREFIX}/usr/share/doc/${PF}"
+		--mandir="${EPREFIX}/usr/share/man"
+		--prefix="${EPREFIX}/usr"
+		--sysconfdir="${EPREFIX}/etc/chrony"
+		--with-hwclockfile="${EPREFIX}/etc/adjtime"
+		--with-pidfile="${EPREFIX}/run/chrony/chronyd.pid"
+
+		${EXTRA_ECONF}
+	)
+
+	# Print the ./configure call
+	echo sh ./configure "${myconf[@]}" >&2
+	sh ./configure "${myconf[@]}" || die
+}
+
+src_compile() {
+	if [[ ${PV} == "9999" ]] ; then
+		# Uses w3m
+		emake -C doc man txt
+	fi
+
+	emake all docs $(usex html '' 'ADOC=true')
+}
+
+src_install() {
+	default
+
+	newinitd "${FILESDIR}"/chronyd.init-r2 chronyd
+	newconfd "${T}"/chronyd.conf chronyd
+
+	insinto /etc/${PN}
+	newins examples/chrony.conf.example1 chrony.conf
+
+	docinto examples
+	dodoc examples/*.example*
+
+	newtmpfiles - chronyd.conf <<<"d /run/chrony 0750 $(usex caps 'ntp ntp' 'root root')"
+
+	if use html ; then
+		docinto html
+		dodoc doc/*.html
+	fi
+
+	keepdir /var/{lib,log}/chrony
+
+	if use caps ; then
+		# Prepare a directory for the chrony.drift file (a la ntpsec)
+		# Ensures the environment is sane on new installs
+		# bug #711058
+		fowners ntp:ntp /var/{lib,log}/chrony
+		fperms 770 /var/lib/chrony
+	fi
+
+	insinto /etc/logrotate.d
+	newins "${FILESDIR}"/chrony-2.4-r1.logrotate chrony
+
+	systemd_dounit examples/chronyd.service
+	systemd_dounit examples/chrony-wait.service
+	systemd_enable_ntpunit 50-chrony chronyd.service
+}
+
+pkg_preinst() {
+	HAD_CAPS=0
+	HAD_SECCOMP=0
+	HAD_PRE_NEW_SECCOMP_LEVEL=0
+
+	# See https://dev.gentoo.org/~zmedico/portage/doc/portage.html#package-ebuild-phases-after-2.1.5
+	# in "Ebuild Phases" for an explanation of why we need to save the variable beforehand
+	if has_version 'net-misc/chrony[caps]' ; then
+		HAD_CAPS=1
+	fi
+
+	if has_version 'net-misc/chrony[seccomp]' ; then
+		HAD_SECCOMP=1
+	fi
+
+	if has_version '>=net-misc/chrony-4.1[seccomp]' ; then
+		# This version introduced a new filter level: -F 2
+		# It's a limited set of seccomp filters designed to be 'bare minimum'
+		HAD_PRE_NEW_SECCOMP_LEVEL=1
+	fi
+}
+
+pkg_postinst() {
+	tmpfiles_process chronyd.conf
+
+	if [[ -n "${REPLACING_VERSIONS}" ]] ; then
+		if use caps && ! [[ ${HAD_CAPS} -eq 1 ]] ; then
+			# bug #719876
+			ewarn "Please adjust permissions on ${EROOT}/var/{lib,log}/chrony to be owned by ntp:ntp"
+			ewarn "e.g. chown -R ntp:ntp ${EROOT}/var/{lib,log}/chrony"
+			ewarn "This is necessary for chrony to drop privileges"
+		elif ! use caps && [[ ${HAD_CAPS} -eq 0 ]] ; then
+			ewarn "Please adjust permissions on ${EROOT}/var/{lib,log}/chrony to be owned by root:root"
+		fi
+	fi
+
+	# See bug #783915 for general discussion on enabling seccomp filtering
+	# by default.
+	local show_seccomp_enable_msg=0
+
+	# Was seccomp disabled before and now enabled?
+	if [[ ${HAD_SECCOMP} -eq 0 ]] && use seccomp ; then
+		show_seccomp_enable_msg=1
+	fi
+
+	# Are we coming from an old version without the new 'minimal' filter?
+	# (-F 2)
+	if [[ ${HAD_PRE_NEW_SECCOMP_LEVEL} -eq 0 ]] ; then
+		show_seccomp_enable_msg=1
+	fi
+
+	if [[ ${show_seccomp_enable_msg} -eq 1 ]] ; then
+		elog "To enable seccomp in a stricter mode, please modify:"
+		elog "- /etc/conf.d/chronyd for OpenRC"
+		elog "- systemctl edit chronyd for systemd"
+		elog "to use -F 1 or -F -1 instead of -F 2 (see man chronyd)"
+		elog "By default, we now use -F 2 which is a baseline/minimal filter."
+	fi
+}
diff --git a/net-misc/chrony/files/chrony-4.2-seccomp-rseq.patch b/net-misc/chrony/files/chrony-4.2-seccomp-rseq.patch
new file mode 100644
index 000000000000..e36a7b33186a
--- /dev/null
+++ b/net-misc/chrony/files/chrony-4.2-seccomp-rseq.patch
@@ -0,0 +1,30 @@
+https://git.tuxfamily.org/chrony/chrony.git/patch/?id=8bb8f15a7d049ed26c69d95087065b381f76ec4d
+
+From: Michael Hudson-Doyle <michael.hudson@canonical.com>
+Date: Wed, 9 Feb 2022 09:06:13 +0100
+Subject: sys_linux: allow rseq in seccomp filter
+
+Libc 2.35 will use rseq syscalls [1][2] by default and thereby
+break chrony in seccomp isolation.
+
+[1]: https://www.efficios.com/blog/2019/02/08/linux-restartable-sequences/
+[2]: https://sourceware.org/pipermail/libc-alpha/2022-February/136040.html
+
+Tested-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
+Reviewed-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
+Signed-off-by: Michael Hudson-Doyle <michael.hudson@canonical.com>
+Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
+
+--- a/sys_linux.c
++++ b/sys_linux.c
+@@ -497,6 +497,9 @@ SYS_Linux_EnableSystemCallFilter(int level, SYS_ProcessContext context)
+     SCMP_SYS(getrlimit),
+     SCMP_SYS(getuid),
+     SCMP_SYS(getuid32),
++#ifdef __NR_rseq
++    SCMP_SYS(rseq),
++#endif
+     SCMP_SYS(rt_sigaction),
+     SCMP_SYS(rt_sigreturn),
+     SCMP_SYS(rt_sigprocmask),
+cgit v0.10.2
diff --git a/net-misc/chrony/files/chrony-4.2-test-mawk.patch b/net-misc/chrony/files/chrony-4.2-test-mawk.patch
new file mode 100644
index 000000000000..3e9e2eeb422d
--- /dev/null
+++ b/net-misc/chrony/files/chrony-4.2-test-mawk.patch
@@ -0,0 +1,30 @@
+https://git.tuxfamily.org/chrony/chrony.git/patch/?id=b61cbed6895fcd3eae4c8458a69995870a22a5e0
+
+From: Vincent Blut <vincent.debian@free.fr>
+Date: Wed, 12 Jan 2022 18:08:34 +0100
+Subject: test: ensure awk commands in 008-ntpera return an integer
+
+Some awk interpreters (e.g. mawk) print long integers in exponential
+notation skewing the test result.
+
+--- a/test/simulation/008-ntpera
++++ b/test/simulation/008-ntpera
+@@ -29,7 +29,7 @@ echo "$ntp_start" | grep -q '-' && test_skip
+ 
+ for time_offset in -1e-1 1e-1; do
+ 	for start_offset in 0 "2^32 - $limit"; do
+-		export CLKNETSIM_START_DATE=$(awk "BEGIN {print $ntp_start + $start_offset}")
++		export CLKNETSIM_START_DATE=$(awk "BEGIN {printf \"%.0f\", $ntp_start + $start_offset}")
+ 		run_test || test_fail
+ 		check_chronyd_exit || test_fail
+ 		check_source_selection || test_fail
+@@ -38,7 +38,7 @@ for time_offset in -1e-1 1e-1; do
+ 	done
+ 
+ 	for start_offset in -$limit "2^32"; do
+-		export CLKNETSIM_START_DATE=$(awk "BEGIN {print $ntp_start + $start_offset}")
++		export CLKNETSIM_START_DATE=$(awk "BEGIN {printf \"%.0f\", $ntp_start + $start_offset}")
+ 		run_test || test_fail
+ 		check_chronyd_exit || test_fail
+ 		check_source_selection || test_fail
+cgit v0.10.2