Re: [ptxdist] [PATCH] dbus-broker: new package

[Michael Olbrich <m.olbrich@pengutronix.de>]

On Tue, Sep 22, 2020 at 11:20:15AM +0200, Clemens Gruber wrote:
> dbus-broker is a high-performance D-Bus message broker which serves as
> a drop-in replacement for the dbus-daemon. The original dbus is
> installed as a dependency (due to required files).
> 
> If dbus-broker is enabled, it is used as the system bus.
> 
> At runtime, a Linux Kernel >= 4.14 is required (theoretically >= 4.10
> works too, but lacks security-related AF_UNIX patches according to
> dbus-broker docs)

I've done some experimentation with this myself in the past. The last time
I tried this, I still needed the /usr/share/dbus-1/system.conf from the
regular package. That made installing only dbus-broker somewhat awkward.

Is that still necessary?

Michael

> Signed-off-by: Clemens Gruber <clemens.gruber@pqgruber.com>
> ---
>  rules/dbus-broker.in   | 19 +++++++++++
>  rules/dbus-broker.make | 75 ++++++++++++++++++++++++++++++++++++++++++
>  2 files changed, 94 insertions(+)
>  create mode 100644 rules/dbus-broker.in
>  create mode 100644 rules/dbus-broker.make
> 
> diff --git a/rules/dbus-broker.in b/rules/dbus-broker.in
> new file mode 100644
> index 000000000..9ae261284
> --- /dev/null
> +++ b/rules/dbus-broker.in
> @@ -0,0 +1,19 @@
> +## SECTION=middleware
> +
> +menuconfig DBUS_BROKER
> +	tristate
> +	prompt "dbus-broker                   "
> +	select HOST_MESON
> +	select DBUS
> +	select EXPAT
> +	select LIBC_M
> +	select LIBC_PTHREAD
> +	select SYSTEMD
> +	help
> +	  The dbus-broker project is an implementation of a message bus as
> +	  defined by the D-Bus specification. Its aim is to provide high
> +	  performance and reliability, while keeping compatibility to the
> +	  D-Bus reference implementation.
> +	  This package is designed to be a drop-in replacement for dbus
> +	  (as the system bus), but the dbus package still has to be
> +	  installed.
> diff --git a/rules/dbus-broker.make b/rules/dbus-broker.make
> new file mode 100644
> index 000000000..7d32c5425
> --- /dev/null
> +++ b/rules/dbus-broker.make
> @@ -0,0 +1,75 @@
> +# -*-makefile-*-
> +#
> +# Copyright (C) 2020 by Clemens Gruber <clemens.gruber@pqgruber.com>
> +#
> +# For further information about the PTXdist project and license conditions
> +# see the README file.
> +#
> +
> +#
> +# We provide this package
> +#
> +PACKAGES-$(PTXCONF_DBUS_BROKER) += dbus-broker
> +
> +#
> +# Paths and names
> +#
> +DBUS_BROKER_VERSION	:= 24
> +DBUS_BROKER_MD5		:= b60f426bc92a4f6119e51a69aef301a2
> +DBUS_BROKER		:= dbus-broker-$(DBUS_BROKER_VERSION)
> +DBUS_BROKER_SUFFIX	:= tar.xz
> +DBUS_BROKER_URL		:= https://github.com/bus1/dbus-broker/releases/download/v$(DBUS_BROKER_VERSION)/$(DBUS_BROKER).$(DBUS_BROKER_SUFFIX)
> +DBUS_BROKER_SOURCE	:= $(SRCDIR)/$(DBUS_BROKER).$(DBUS_BROKER_SUFFIX)
> +DBUS_BROKER_DIR		:= $(BUILDDIR)/$(DBUS_BROKER)
> +DBUS_BROKER_LICENSE	:= Apache-2.0
> +DBUS_BROKER_LICENSE_FILES := \
> +	file://LICENSE;md5=7b486c2338d225a1405d979ed2c15ce8
> +
> +# ----------------------------------------------------------------------------
> +# Prepare
> +# ----------------------------------------------------------------------------
> +
> +DBUS_BROKER_CONF_TOOL	:= meson
> +DBUS_BROKER_CONF_OPT	:= \
> +	$(CROSS_MESON_USR) \
> +	-Daudit=false \
> +	-Ddocs=false \
> +	-Dlauncher=true \
> +	-Dlinux-4-17=false \
> +	-Dreference-test=false \
> +	-Dselinux=$(call ptx/truefalse,PTXCONF_GLOBAL_SELINUX)
> +
> +# dbus-broker requires a kernel and kernel headers >= 4.14
> +ifdef PTXCONF_KERNEL_HEADER
> +DBUS_BROKER_CPPFLAGS	:= \
> +	-isystem $(KERNEL_HEADERS_INCLUDE_DIR)
> +endif
> +
> +# ----------------------------------------------------------------------------
> +# Target-Install
> +# ----------------------------------------------------------------------------
> +
> +$(STATEDIR)/dbus-broker.targetinstall:
> +	@$(call targetinfo)
> +
> +	@$(call install_init, dbus-broker)
> +	@$(call install_fixup, dbus-broker, PRIORITY, optional)
> +	@$(call install_fixup, dbus-broker, SECTION, base)
> +	@$(call install_fixup, dbus-broker, AUTHOR, "Clemens Gruber <clemens.gruber@pqgruber.com>")
> +	@$(call install_fixup, dbus-broker, DESCRIPTION, \
> +		"Linux D-Bus Message Broker")
> +
> +	@$(call install_copy, dbus-broker, 0, 0, 0755, -, /usr/bin/dbus-broker)
> +	@$(call install_copy, dbus-broker, 0, 0, 0755, -, /usr/bin/dbus-broker-launch)
> +	@$(call install_alternative, dbus-broker, 0, 0, 0644, \
> +		/usr/lib/systemd/system/dbus-broker.service)
> +
> +	# Replace dbus reference implementation service with dbus-broker as system bus
> +	$(call install_link, dbus-broker, /usr/lib/systemd/system/dbus-broker.service, \
> +		/etc/systemd/system/dbus.service)
> +
> +	@$(call install_finish, dbus-broker)
> +
> +	@$(call touch)
> +
> +# vim: syntax=make
> -- 
> 2.28.0
> 
> 
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