[Buildroot] [PATCH 1/4 v4] package/dbus-broker: new package
Norbert Lange
nolange79 at gmail.com
Sun Jul 5 23:21:11 UTC 2020
Am So., 5. Juli 2020 um 12:23 Uhr schrieb Yann E. MORIN
<yann.morin.1998 at free.fr>:
>
> From: Norbert Lange <nolange79 at gmail.com>
>
> dbus-broker is an alternate implementation of a dbus dameon. It can be
> used as a drop-in replacement for the system bus daemon, as well as the
> session bus daemon.
>
> dbus-broker is (basically, and as far as we're concerned in Buildroot)
> split in two components:
>
> - the actual message bus daemon, that relays messages across clients
>
> - a launcher, which is responsible for setting various aspects of the
> bus, like setting the policy et al. and opening the socket(s) the
> message bus daemon will have to listen on...
>
> The launcher can only be used in a systemd setup (it makes heavy use of
> systemd facilities), while the message bus is generic. However, the
> message bus daemon is useless without a launcher. There does not exist a
> non-systemd launcher, which makes dbus-broker actually a systemd-only
> package; this can be revisited when/if a non-systemd launcher appears.
I'd guess that one day systemd will incorporate the launcher portion.
(bit offtopic)
>
> There are two cases:
>
> 1. original dbus disabled
>
> Here, we install the config files and systemd socket activation
> units; dbus-broker provides the system and sessions bus daemons.
>
> 2. original dbus enabled
>
> In this case, we do not install the config files and systemd socket
> activation units, or define a user: they all are provided by the
> original dbus, and we piggy-back on those.
>
> In this situation, the default system and sessions message bus are
> the original dbus; dbus-broker is not enabled.
>
> However, users may opt-in to use dbus-broker in a few ways:
> - at build-time: provide drop-in units in an overlay;
Adding a preset would be the most direct method.
> - at build-time: call systemctl enable/disable from a post-build
> script;
> - at runtime (on a RW filesystem): by calling systemctl
> enable/disable
>
> Note about the user: the path to the system bus socket is a so-called
> "well-known location": it is expected to be there, by spec. Moving it
> elsewhere is going to break existing programs. So, the user running the
> system bus daemon must be able to create that socket.
>
> As we may have two packages providing a system bus daemon, they have to
> be both able to create the socket, and thus must both be able to write
> in the directory containing the socket. And since they can be switched
> at runtime, they must be running as the same user.
>
> We can't just reference the original dbus user, so we duplicate the
> entry. What is important, is that the user be named 'dbus', as that's
> what we use in both cases.
>
> dbus-broker code does not have a provision, like the original dbus has,
> to specify the user to run as, and does not interpret the <user>
> directive in the system.conf file. Since running the bus daemon as root
> is not so safe, we create a systemd unit drop-in to complement the unit
> provided by the package and defione the user to run as.
I thought we both agreed last time that dbus-broker does read the config and
switch to the uid (you did convince me of that ! ;) ) ? see [1]
Note that the facilities are a bit different, the reference dbus had a
dbus-daemon-launch-helper that setuids as root.
with dbus-broker, systemd does handle the socket (still as root),
the launcher connects to it and then drops privileges.
1) I am not sure if dbus-broker-launch is completely ok being started
as non-root
2) this also affects dbus-daemon-launch-helper/reference dbus, as you use the
dbus.service.d directory for the .conf file (instead of
dbus-broker.service.d)
3) for dbus broker the dbus user has no external references.
4) the only external reference to dbus user is with dbus-daemon-launch-helper,
and this is only used for “D-BUS System Activation”. I believe
that's completely
unused with systemd services.
dropping to the dbus user is AFAIK just a matter of isolation.
I dont claim to understand the specifics well enough, but such a
dropin is not used
elsewhere, including Fedora which considers making dbus-broker the default.
ie. that would be a grave mistake of upstream to leave the setting out.
>
> As for that drop-in: systemd knows only about the 'dbus' service, which
> is what dbus-broker impersonates, so the drop-in must be one for the
> dbus service, not the dbus-broker service, which does not exist.
dbus-broker.service has an alias to dbus.service, if enabled it will take the
place of that service aswell (and bc of the conflict with dbus, there
is just one
dbus.service enabled at any point)
also you use dbus.service.d as place for the dropin, this will affect the
reference dbus too?
systemctl show dbus.service
systemctl show dbus-broker.service
> Note however that, as a consequence, when both the original dbus and
> dbus-broker are installed, we can't install that drop-in, because the
> default message bus dameon will be the original dbus, which already does
> uid-switching internally. Thus we can't install the systemd drop-in to
> the dbus service, which is not the one from dbus-broker but from the
> original dbus. So, if the user wants to switch to dbus-broker in a
> post-build script, or at runtime, they will have to take care of
> providing that drop-in if they do not want the dbus-broker message bus
> daemon to run as root.
Ok, seems to reinstate my last point.
>
> Finally, the licensing terms are pretty trivial for dbus-broker itself,
> but it makes use of third-party code that it inherits as git submodules
> (that are bundled in the release archive). Thus the licensing is a bit
> convoluted... The third-party codes claim to be licensed as "Apache-2.0
> and LGP-2.1+" in their AUTHORS files, but at the same time claim
> **Apache-2.0** OR **LGPL-2.1-or-later**" in their README files. The
> individual source files (that are used) do not seem to have any
> licensing header to clarify the situation. So we represent the situation
> with "Apache-2.0 and/or LGPL-2.1+".
>
> Signed-off-by: Norbert Lange <nolange79 at gmail.com>
> [yann.morin.1998 at free.fr:
> - don't select systemd; depend on it instead
> - only install config files and systemd units without original dbus
> - install a user to run the message bus as
> - fix licensing info
> - entirely reword and extend the commit log
> ]
> Signed-off-by: Yann E. MORIN <yann.morin.1998 at free.fr>
>
> ---
> Changes v3 -> v4 (Yann, respining after review by Norbert):
> - drop the non-systemd case
> - drop the launcher option
> - reinstate BR2_COREUTILS_HOST_DEPENDENCY and ln --relative
> - reinstate the user, explain it
>
> Changes v2 -> v3 (Norbert, respinning after Yann):
> - add an own config entry for dbus-broker-launch
> enabled by default if systemd init is used
> - undo BR2_COREUTILS_HOST_DEPENDENCY
> - undo adding dbus user - never used by this package
> - add condtional audit dependency
> - cleanup conditional logic a bit
>
> Changes v1 -> v2 (Yann):
> - make launcher conditional
> - don't select systemd; don't depend on it either
> - don't install systemd units without systemd
> - only install config files and systemd units wihtout original dbus
> - rename hooks with meaningful names
> - fix licensing info
> - entirely reword and extend the commit log
> ---
> DEVELOPERS | 1 +
> package/Config.in | 1 +
> package/dbus-broker/Config.in | 22 +++++
> package/dbus-broker/dbus-broker.hash | 3 +
> package/dbus-broker/dbus-broker.mk | 78 +++++++++++++++++
> package/dbus-broker/dbus-user.conf | 2 +
> package/dbus-broker/dbus.socket | 5 ++
> package/dbus-broker/session.conf | 65 +++++++++++++++
> package/dbus-broker/system.conf | 120 +++++++++++++++++++++++++++
> 9 files changed, 297 insertions(+)
> create mode 100644 package/dbus-broker/Config.in
> create mode 100644 package/dbus-broker/dbus-broker.hash
> create mode 100644 package/dbus-broker/dbus-broker.mk
> create mode 100644 package/dbus-broker/dbus-user.conf
> create mode 100644 package/dbus-broker/dbus.socket
> create mode 100644 package/dbus-broker/session.conf
> create mode 100644 package/dbus-broker/system.conf
>
> diff --git a/DEVELOPERS b/DEVELOPERS
> index 4b6a346a05..0983b09ac9 100644
> --- a/DEVELOPERS
> +++ b/DEVELOPERS
> @@ -1890,6 +1890,7 @@ F: package/tpm-tools/
> F: package/trousers/
>
> N: Norbert Lange <nolange79 at gmail.com>
> +F: package/dbus-broker/
> F: package/tcf-agent/
>
> N: Nylon Chen <nylon7 at andestech.com>
Might add yourself here too.
> diff --git a/package/Config.in b/package/Config.in
> index 6a34a895af..60f8ee478a 100644
> --- a/package/Config.in
> +++ b/package/Config.in
> @@ -433,6 +433,7 @@ endmenu
> source "package/dahdi-linux/Config.in"
> source "package/dahdi-tools/Config.in"
> source "package/dbus/Config.in"
> + source "package/dbus-broker/Config.in"
> source "package/dbus-cpp/Config.in"
> source "package/dbus-glib/Config.in"
> source "package/dbus-python/Config.in"
> diff --git a/package/dbus-broker/Config.in b/package/dbus-broker/Config.in
> new file mode 100644
> index 0000000000..30d8b27280
> --- /dev/null
> +++ b/package/dbus-broker/Config.in
> @@ -0,0 +1,22 @@
> +config BR2_PACKAGE_DBUS_BROKER
> + bool "dbus-broker"
> + depends on BR2_USE_MMU
> + depends on BR2_TOOLCHAIN_HAS_THREADS
> + depends on BR2_PACKAGE_SYSTEMD
> + select BR2_PACKAGE_EXPAT
> + help
> + Linux D-Bus Message Broker.
> +
> + 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.
> +
> + It is exclusively written for Linux systems, and makes use of
> + many modern features provided by recent linux kernel releases.
> +
> + https://github.com/bus1/dbus-broker/wiki
> +
> +comment "dbusbroker needs systemd and a toolchain w/ threads"
> + depends on BR2_USE_MMU
> + depends on !BR2_TOOLCHAIN_HAS_THREADS || !BR2_PACKAGE_SYSTEMD
> diff --git a/package/dbus-broker/dbus-broker.hash b/package/dbus-broker/dbus-broker.hash
> new file mode 100644
> index 0000000000..b8d631767f
> --- /dev/null
> +++ b/package/dbus-broker/dbus-broker.hash
> @@ -0,0 +1,3 @@
> +# Locally calculated
> +sha256 95adfde56bce898c3b69eee0524732365e802348dd8189a35d5d00c30990dc81 dbus-broker-23.tar.xz
> +sha256 3cda3630283eda0eab825abe5ac84d191248c6b3fe1c232a118124959b96c6a4 LICENSE
> diff --git a/package/dbus-broker/dbus-broker.mk b/package/dbus-broker/dbus-broker.mk
> new file mode 100644
> index 0000000000..9439b12c0d
> --- /dev/null
> +++ b/package/dbus-broker/dbus-broker.mk
> @@ -0,0 +1,78 @@
> +################################################################################
> +#
> +# dbus-broker
> +#
> +################################################################################
> +
> +DBUS_BROKER_VERSION = 23
> +DBUS_BROKER_SOURCE = dbus-broker-$(DBUS_BROKER_VERSION).tar.xz
> +DBUS_BROKER_SITE = https://github.com/bus1/dbus-broker/releases/download/v$(DBUS_BROKER_VERSION)
> +
> +# For the third-party code, the licensing legla-info is inconsistent between
> +# the AUTHORS and README, so keep both
> +DBUS_BROKER_LICENSE = \
> + Apache-2.0, \
> + Apache-2.0 and/or LGPL-2.1+ (c-dvar, c-ini, c-list, c-rbtree, c-shquote, c-stdaux, c-utf8)
> +DBUS_BROKER_LICENSE_FILES = \
> + LICENSE \
> + subprojects/c-dvar/AUTHORS subprojects/c-dvar/README.md \
> + subprojects/c-ini/AUTHORS subprojects/c-ini/README.md \
> + subprojects/c-list/AUTHORS subprojects/c-list/README.md \
> + subprojects/c-rbtree/AUTHORS subprojects/c-rbtree/README.md \
> + subprojects/c-shquote/AUTHORS subprojects/c-shquote/README.md \
> + subprojects/c-stdaux/AUTHORS subprojects/c-stdaux/README.md \
> + subprojects/c-utf8/AUTHORS subprojects/c-utf8/README.md
> +
> +DBUS_BROKER_DEPENDENCIES = expat systemd
> +DBUS_BROKER_CONF_OPTS = -Dlauncher=true
> +
> +ifeq ($(BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_17),y)
> +DBUS_BROKER_CONF_OPTS += -Dlinux-4-17=true
> +else
> +DBUS_BROKER_CONF_OPTS += -Dlinux-4-17=false
> +endif
> +
> +ifeq ($(BR2_PACKAGE_AUDIT),y)
> +DBUS_BROKER_DEPENDENCIES += audit
> +DBUS_BROKER_CONF_OPTS += -Daudit=true
> +else
> +DBUS_BROKER_CONF_OPTS += -Daudit=false
> +endif
> +
> +ifeq ($(BR2_PACKAGE_LIBSELINUX),y)
> +DBUS_BROKER_DEPENDENCIES += libselinux
> +DBUS_BROKER_CONF_OPTS += -Dselinux=true
> +else
> +DBUS_BROKER_CONF_OPTS += -Dselinux=false
> +endif
> +
> +# Only install units for system bus daemon socket if original dbus is not present
> +# Only install config and service files if original dbus is not present
> +# Only define a user if the original dbus is not present
> +#
> +# Note: BR2_COREUTILS_HOST_DEPENDENCY to be able to use ln --relative
> +ifeq ($(BR2_PACKAGE_DBUS),)
> +DBUS_BROKER_DEPENDENCIES += $(BR2_COREUTILS_HOST_DEPENDENCY)
> +
> +# We msut be using the same user as the origian dbus, so we can share
> +# the home directory and create a socket there.
> +define DBUS_BROKER_USERS
> + dbus -1 dbus -1 * /var/run/dbus - dbus DBus messagebus user
> +endef
Out of scope of this patch, but pls have a look at [2] and [3].
> +
> +define DBUS_BROKER_INSTALL_INIT_SYSTEMD
> + $(INSTALL) -D -m 0644 $(DBUS_BROKER_PKGDIR)/session.conf \
> + $(TARGET_DIR)/usr/share/dbus-1/session.conf
> + $(INSTALL) -D -m 0644 $(DBUS_BROKER_PKGDIR)/system.conf \
> + $(TARGET_DIR)/usr/share/dbus-1/system.conf
> + $(INSTALL) -D -m 0644 $(DBUS_BROKER_PKGDIR)/dbus.socket \
> + $(TARGET_DIR)/usr/lib/systemd/system/dbus.socket
> + $(HOST_MAKE_ENV) ln -sf --relative \
> + $(TARGET_DIR)/usr/lib/systemd/system/dbus.socket \
> + $(TARGET_DIR)/usr/lib/systemd/system/sockets.target.wants/dbus.socket
> + $(INSTALL) -D -m 0644 $(DBUS_BROKER_PKGDIR)/dbus-user.conf \
> + $(TARGET_DIR)/etc/systemd/system/dbus.service.d/dbus-user.conf
Should not be necessary
> +endef
> +endif # !BR2_PACKAGE_DBUS
> +
> +$(eval $(meson-package))
> diff --git a/package/dbus-broker/dbus-user.conf b/package/dbus-broker/dbus-user.conf
> new file mode 100644
> index 0000000000..f7bdc06cf5
> --- /dev/null
> +++ b/package/dbus-broker/dbus-user.conf
> @@ -0,0 +1,2 @@
> +[Service]
> +User=dbus
Should not be necessary
> diff --git a/package/dbus-broker/dbus.socket b/package/dbus-broker/dbus.socket
> new file mode 100644
> index 0000000000..5c373cf450
> --- /dev/null
> +++ b/package/dbus-broker/dbus.socket
> @@ -0,0 +1,5 @@
> +[Unit]
> +Description=D-Bus System Message Bus Socket
> +
> +[Socket]
> +ListenStream=/run/dbus/system_bus_socket
> diff --git a/package/dbus-broker/session.conf b/package/dbus-broker/session.conf
> new file mode 100644
> index 0000000000..e4758fa218
> --- /dev/null
> +++ b/package/dbus-broker/session.conf
> @@ -0,0 +1,65 @@
> +<!-- This configuration file controls the per-user-login-session message bus.
> + Add a session-local.conf and edit that rather than changing this
> + file directly. -->
> +
> +<!DOCTYPE busconfig PUBLIC "-//freedesktop//DTD D-Bus Bus Configuration 1.0//EN"
> + "http://www.freedesktop.org/standards/dbus/1.0/busconfig.dtd">
> +<busconfig>
> + <!-- Our well-known bus type, don't change this -->
> + <type>session</type>
> +
> + <!-- If we fork, keep the user's original umask to avoid affecting
> + the behavior of child processes. -->
> + <keep_umask/>
> +
> + <standard_session_servicedirs />
> +
> + <policy context="default">
> + <!-- Allow everything to be sent -->
> + <allow send_destination="*" eavesdrop="true"/>
> + <!-- Allow everything to be received -->
> + <allow eavesdrop="true"/>
> + <!-- Allow anyone to own anything -->
> + <allow own="*"/>
> + </policy>
> +
> + <!-- Config files are placed here that among other things,
> + further restrict the above policy for specific services. -->
> + <includedir>session.d</includedir>
> +
> + <includedir>/etc/dbus-1/session.d</includedir>
> +
> + <!-- This is included last so local configuration can override what's
> + in this standard file -->
> + <include ignore_missing="yes">/etc/dbus-1/session-local.conf</include>
> +
> + <include if_selinux_enabled="yes" selinux_root_relative="yes">contexts/dbus_contexts</include>
> +
> + <!-- For the session bus, override the default relatively-low limits
> + with essentially infinite limits, since the bus is just running
> + as the user anyway, using up bus resources is not something we need
> + to worry about. In some cases, we do set the limits lower than
> + "all available memory" if exceeding the limit is almost certainly a bug,
> + having the bus enforce a limit is nicer than a huge memory leak. But the
> + intent is that these limits should never be hit. -->
> +
> + <!-- the memory limits are 1G instead of say 4G because they can't exceed 32-bit signed int max -->
> + <limit name="max_incoming_bytes">1000000000</limit>
> + <limit name="max_incoming_unix_fds">250000000</limit>
> + <limit name="max_outgoing_bytes">1000000000</limit>
> + <limit name="max_outgoing_unix_fds">250000000</limit>
> + <limit name="max_message_size">1000000000</limit>
> + <!-- We do not override max_message_unix_fds here since the in-kernel
> + limit is also relatively low -->
> + <limit name="service_start_timeout">120000</limit>
> + <limit name="auth_timeout">240000</limit>
> + <limit name="pending_fd_timeout">150000</limit>
> + <limit name="max_completed_connections">100000</limit>
> + <limit name="max_incomplete_connections">10000</limit>
> + <limit name="max_connections_per_user">100000</limit>
> + <limit name="max_pending_service_starts">10000</limit>
> + <limit name="max_names_per_connection">50000</limit>
> + <limit name="max_match_rules_per_connection">50000</limit>
> + <limit name="max_replies_per_connection">50000</limit>
> +
> +</busconfig>
> diff --git a/package/dbus-broker/system.conf b/package/dbus-broker/system.conf
> new file mode 100644
> index 0000000000..a1e8df7367
> --- /dev/null
> +++ b/package/dbus-broker/system.conf
> @@ -0,0 +1,120 @@
> +<!-- This configuration file controls the systemwide message bus.
> + Add a system-local.conf and edit that rather than changing this
> + file directly. -->
> +
> +<!-- Note that there are any number of ways you can hose yourself
> + security-wise by screwing up this file; in particular, you
> + probably don't want to listen on any more addresses, add any more
> + auth mechanisms, run as a different user, etc. -->
> +
> +<!DOCTYPE busconfig PUBLIC "-//freedesktop//DTD D-Bus Bus Configuration 1.0//EN"
> + "http://www.freedesktop.org/standards/dbus/1.0/busconfig.dtd">
> +<busconfig>
> +
> + <!-- Our well-known bus type, do not change this -->
> + <type>system</type>
> +
Add this here instead of using the dbus-user.conf file:
+ <!-- Run as special user -->
+ <user>dbus</user>
+
> + <!-- Fork into daemon mode -->
> + <fork/>
> +
> + <!-- We use system service launching using a helper -->
> + <standard_system_servicedirs/>
> +
> + <!-- Enable logging to syslog -->
> + <syslog/>
> +
> + <policy context="default">
> + <!-- All users can connect to system bus -->
> + <allow user="*"/>
> +
> + <!-- Holes must be punched in service configuration files for
> + name ownership and sending method calls -->
> + <deny own="*"/>
> + <deny send_type="method_call"/>
> +
> + <!-- Signals and reply messages (method returns, errors) are allowed
> + by default -->
> + <allow send_type="signal"/>
> + <allow send_requested_reply="true" send_type="method_return"/>
> + <allow send_requested_reply="true" send_type="error"/>
> +
> + <!-- All messages may be received by default -->
> + <allow receive_type="method_call"/>
> + <allow receive_type="method_return"/>
> + <allow receive_type="error"/>
> + <allow receive_type="signal"/>
> +
> + <!-- Allow anyone to talk to the message bus -->
> + <allow send_destination="org.freedesktop.DBus"
> + send_interface="org.freedesktop.DBus" />
> + <allow send_destination="org.freedesktop.DBus"
> + send_interface="org.freedesktop.DBus.Introspectable"/>
> + <allow send_destination="org.freedesktop.DBus"
> + send_interface="org.freedesktop.DBus.Properties"/>
> + <!-- But disallow some specific bus services -->
> + <deny send_destination="org.freedesktop.DBus"
> + send_interface="org.freedesktop.DBus"
> + send_member="UpdateActivationEnvironment"/>
> + <deny send_destination="org.freedesktop.DBus"
> + send_interface="org.freedesktop.DBus.Debug.Stats"/>
> + <deny send_destination="org.freedesktop.DBus"
> + send_interface="org.freedesktop.systemd1.Activator"/>
> + </policy>
> +
> + <!-- Only systemd, which runs as root, may report activation failures. -->
> + <policy user="root">
> + <allow send_destination="org.freedesktop.DBus"
> + send_interface="org.freedesktop.systemd1.Activator"/>
> + </policy>
> +
> + <!-- root may monitor the system bus. -->
> + <policy user="root">
> + <allow send_destination="org.freedesktop.DBus"
> + send_interface="org.freedesktop.DBus.Monitoring"/>
> + </policy>
> +
> + <!-- If the Stats interface was enabled at compile-time, root may use it.
> + Copy this into system.local.conf or system.d/*.conf if you want to
> + enable other privileged users to view statistics and debug info -->
> + <policy user="root">
> + <allow send_destination="org.freedesktop.DBus"
> + send_interface="org.freedesktop.DBus.Debug.Stats"/>
> + </policy>
> +
> +
> + <!-- The defaults for these limits are hard-coded in dbus-daemon.
> + Some clarifications:
> + Times are in milliseconds (ms); 1000ms = 1 second
> + 133169152 bytes = 127 MiB
> + 33554432 bytes = 32 MiB
> + 150000ms = 2.5 minutes -->
> + <!-- <limit name="max_incoming_bytes">133169152</limit> -->
> + <!-- <limit name="max_incoming_unix_fds">64</limit> -->
> + <!-- <limit name="max_outgoing_bytes">133169152</limit> -->
> + <!-- <limit name="max_outgoing_unix_fds">64</limit> -->
> + <!-- <limit name="max_message_size">33554432</limit> -->
> + <!-- <limit name="max_message_unix_fds">16</limit> -->
> + <!-- <limit name="service_start_timeout">25000</limit> -->
> + <!-- <limit name="auth_timeout">5000</limit> -->
> + <!-- <limit name="pending_fd_timeout">150000</limit> -->
> + <!-- <limit name="max_completed_connections">2048</limit> -->
> + <!-- <limit name="max_incomplete_connections">64</limit> -->
> + <!-- <limit name="max_connections_per_user">256</limit> -->
> + <!-- <limit name="max_pending_service_starts">512</limit> -->
> + <!-- <limit name="max_names_per_connection">512</limit> -->
> + <!-- <limit name="max_match_rules_per_connection">512</limit> -->
> + <!-- <limit name="max_replies_per_connection">128</limit> -->
> +
> + <!-- Config files are placed here that among other things, punch
> + holes in the above policy for specific services. -->
> + <includedir>system.d</includedir>
> +
> + <includedir>/etc/dbus-1/system.d</includedir>
> +
> + <!-- This is included last so local configuration can override what's
> + in this standard file -->
> + <include ignore_missing="yes">/etc/dbus-1/system-local.conf</include>
> +
> + <include if_selinux_enabled="yes" selinux_root_relative="yes">contexts/dbus_contexts</include>
> +
> +</busconfig>
> --
> 2.20.1
>
Regards, Norbert
[1] - https://github.com/bus1/dbus-broker/blob/de03b7098bce71095673c21042a8f4b4f7c8c988/src/launch/launcher.c#L1393
[2] - https://patchwork.ozlabs.org/project/buildroot/list/?series=186339
[3] - https://patchwork.ozlabs.org/project/buildroot/patch/20200605224858.12870-2-nolange79@gmail.com/
More information about the buildroot
mailing list