Bump buildroot to 2020.11-rc1 (#985)

* Update buildroot-patches for 2020.11-rc1 buildroot

* Update buildroot to 2020.11-rc1

Signed-off-by: Stefan Agner <stefan@agner.ch>

* Don't rely on sfdisk --list-free output

The --list-free (-F) argument does not allow machine readable mode. And
it seems that the output format changes over time (different spacing,
using size postfixes instead of raw blocks).

Use sfdisk json output and calculate free partition space ourselfs. This
works for 2.35 and 2.36 and is more robust since we rely on output which
is meant for scripts to parse.

* Migrate defconfigs for Buildroot 2020.11-rc1

In particular, rename BR2_TARGET_UBOOT_BOOT_SCRIPT(_SOURCE) to
BR2_PACKAGE_HOST_UBOOT_TOOLS_BOOT_SCRIPT(_SOURCE).

* Rebase/remove systemd patches for systemd 246

* Drop apparmor/libapparmor from buildroot-external

* hassos-persists: use /run as directory for lockfiles

The U-Boot tools use /var/lock by default which is not created any more
by systemd by default (it is under tmpfiles legacy.conf, which we no
longer install).

* Disable systemd-update-done.service

The service is not suited for pure read-only systems. In particular the
service needs to be able to write a file in /etc and /var. Remove the
service. Note: This is a static service and cannot be removed using
systemd-preset.

* Disable apparmor.service for now

The service loads all default profiles. Some might actually cause
problems. E.g. the profile for ping seems not to match our setup for
/etc/resolv.conf:
[85503.634653] audit: type=1400 audit(1605286002.684:236): apparmor="DENIED" operation="open" profile="ping" name="/run/resolv.conf" pid=27585 comm="ping" requested_mask="r" denied_mask="r" fsuid=0 ouid=0

buildroot/package/unbound/Config.in

@@ -0,0 +1,38 @@
+config BR2_PACKAGE_UNBOUND
+	bool "unbound"
+	depends on !BR2_STATIC_LIBS
+	select BR2_PACKAGE_EXPAT
+	select BR2_PACKAGE_LIBEVENT
+	select BR2_PACKAGE_OPENSSL
+	help
+	  Unbound is a validating, recursive, and caching DNS resolver.
+	  It supports DNSSEC, QNAME minimisation, DNS-over-TLS and
+	  DNSCrypt.
+
+	  https://www.unbound.net
+
+if BR2_PACKAGE_UNBOUND
+config BR2_PACKAGE_UNBOUND_DNSCRYPT
+	bool "enable DNSCrypt"
+	select BR2_PACKAGE_LIBSODIUM
+	help
+	  DNSCrypt wraps unmodified DNS queries between a client and
+	  a DNS resolver. Default port used is 443 and like with
+	  normal unencrypted DNS, it uses UDP first and falling back
+	  to TCP if response too large.
+
+	  There is also DNS-over-TLS, a TCP only version
+	  of proposed standard for DNS encryption (RFC 7858).
+	  Default port for DNS-over-TLS is 853 and Unbound has
+	  built-in support for it.
+
+	  https://tools.ietf.org/html/rfc7858
+
+	  Note: Neither DNSCrypt or DNS-over-TLS encrypt the SNI.
+	  Here is some suggestions how to handle SNI encryption:
+
+	  https://tools.ietf.org/html/draft-ietf-tls-sni-encryption-00
+endif
+
+comment "unbound needs a toolchain w/ dynamic library"
+	depends on BR2_STATIC_LIBS

buildroot/package/unbound/S70unbound

@@ -0,0 +1,52 @@
+#!/bin/sh
+
+DAEMON="unbound"
+PIDFILE="/var/run/$DAEMON.pid"
+
+UNBOUND_ARGS=""
+
+# shellcheck source=/dev/null
+[ -r "/etc/default/$DAEMON" ] && . "/etc/default/$DAEMON"
+
+start() {
+	printf 'Starting %s: ' "$DAEMON"
+	start-stop-daemon -S -q -p "$PIDFILE" -x "/usr/sbin/$DAEMON" \
+		-- $UNBOUND_ARGS
+	status=$?
+	if [ "$status" -eq 0 ]; then
+		echo "OK"
+	else
+		echo "FAIL"
+	fi
+	return "$status"
+}
+
+stop() {
+	printf 'Stopping %s: ' "$DAEMON"
+	start-stop-daemon -K -q -p "$PIDFILE"
+	status=$?
+	if [ "$status" -eq 0 ]; then
+		rm -f "$PIDFILE"
+		echo "OK"
+	else
+		echo "FAIL"
+	fi
+	return "$status"
+}
+
+restart() {
+	stop
+	sleep 1
+	start
+}
+
+case "$1" in
+	start|stop|restart)
+		"$1";;
+	reload)
+		# Restart, since there is no true "reload" feature.
+		restart;;
+	*)
+		echo "Usage: $0 {start|stop|restart|reload}"
+		exit 1
+esac

buildroot/package/unbound/unbound.hash

@@ -0,0 +1,3 @@
+# Locally calculated
+sha256 5b9253a97812f24419bf2e6b3ad28c69287261cf8c8fa79e3e9f6d3bf7ef5835  unbound-1.12.0.tar.gz
+sha256 8eb9a16cbfb8703090bbfa3a2028fd46bb351509a2f90dc1001e51fbe6fd45db  LICENSE

buildroot/package/unbound/unbound.mk

@@ -0,0 +1,54 @@
+################################################################################
+#
+# unbound
+#
+################################################################################
+
+UNBOUND_VERSION = 1.12.0
+UNBOUND_SITE = https://www.unbound.net/downloads
+UNBOUND_DEPENDENCIES = host-pkgconf expat libevent openssl
+UNBOUND_LICENSE = BSD-3-Clause
+UNBOUND_LICENSE_FILES = LICENSE
+UNBOUND_CONF_OPTS = \
+	--disable-rpath \
+	--disable-debug \
+	--with-conf-file=/etc/unbound/unbound.conf \
+	--with-pidfile=/var/run/unbound.pid \
+	--with-rootkey-file=/etc/unbound/root.key \
+	--enable-tfo-server \
+	--with-libexpat=$(STAGING_DIR)/usr \
+	--with-ssl=$(STAGING_DIR)/usr
+
+# uClibc-ng does not have MSG_FASTOPEN
+# so TCP Fast Open client mode disabled for it
+ifeq ($(BR2_TOOLCHAIN_USES_UCLIBC),y)
+UNBOUND_CONF_OPTS += --disable-tfo-client
+else
+UNBOUND_CONF_OPTS += --enable-tfo-client
+endif
+
+ifeq ($(BR2_TOOLCHAIN_HAS_THREADS_NPTL),y)
+UNBOUND_CONF_OPTS += --with-pthreads
+else
+UNBOUND_CONF_OPTS += --without-pthreads
+endif
+
+ifeq ($(BR2_GCC_ENABLE_LTO),y)
+UNBOUND_CONF_OPTS += --enable-flto
+else
+UNBOUND_CONF_OPTS += --disable-flto
+endif
+
+ifeq ($(BR2_PACKAGE_UNBOUND_DNSCRYPT),y)
+UNBOUND_CONF_OPTS += --enable-dnscrypt
+UNBOUND_DEPENDENCIES += libsodium
+else
+UNBOUND_CONF_OPTS += --disable-dnscrypt
+endif
+
+define UNBOUND_INSTALL_INIT_SYSV
+	$(INSTALL) -D -m 755 package/unbound/S70unbound \
+		$(TARGET_DIR)/etc/init.d/S70unbound
+endef
+
+$(eval $(autotools-package))