Hi folks,
I have a quick question: is there a way to get container size when
deserializing an array from a D-Bus message (be it an array of trivial or
non-trivial D-Bus types)? Say I enter a container with
sd_bus_message_enter_container, and then, before reading individual elements,
I'd like
Hi folks,
Does sd-bus API provide a way to append a char string of a basic type (be it
SD_BUS_TYPE_STRING, SD_BUS_TYPE_OBJECT_PATH, or SD_BUS_TYPE_SIGNATURE for
that matter) to a D-Bus message while allowing the caller to explicitly specify
the length of that char string?
Hey Lennart,
Yes, I was referring to man pages I read a few years ago when I used
sd_bus_get_timeout() for the first time. And, before posting this mail, I also
checked on my current Linux development machine, which has systemd v247. So I
was not that far :-) The fixed wording in v250 is
Hi everyone,
According to sd_bus_get_timeout(3) man page, sd_bus_get_timeout() returns
"timeout in us to pass to poll()" and it also states that "the returned
time-value is relative".
However, in reality, this function returns an absolute time point (a-ka
relative to the monotonic clock
or whatever obscure situations may
happen then)?
Thanks,
Stanislav Angelovič.
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On Tue, Jun 16, 2020 at 10:50 AM Lennart Poettering
wrote:
> On Mi, 10.06.20 18:24, Stanislav Angelovič (angelovi...@gmail.com) wrote:
>
> > Hi folks,
> >
> > sdbus-c++, a C++ library on top of sd-bus, is based on p
Hi folks,
sdbus-c++, a C++ library on top of sd-bus, is based on plain sd-bus
messages to implement the concept of Variant type. Under plain message here
I mean one created via `sd_bus_message_new` with the type being
_SD_BUS_MESSAGE_TYPE_INVALID. We use such a message as a generic container
of
Hi folks,
Please, what is the difference in sd-bus behavior when my D-Bus signal
callback returns a zero return value versus a positive return value?
And what's the difference between those return values in D-Bus method
callback, D-Bus async method reply callback, D-Bus property get callback,
Hi guys,
I have two questions regarding implementation
of org.freedesktop.DBus.Peer.GetMachineId() in libsystemd.
1. The method only checks the '/etc/machine-id' file. If libsystemd, which
contains sd-bus implementation, which is quite self-contained and
systemd-independent, is used in a
Hi Lennart,
Sorry for a bit late reply, I've been quite busy recently.
> So we could readd the ability to create a bus message with a NULL bus,
> but I am a bit concerned that people then always pass NULL which might
> ultimately result in constant remarshalling if the message is
> eventually
Hi (Lennart :)
Quick question: Would it be possible to extend sd-bus to also allow
creating messages without requiring a bus?
Let me explain: Currently, if we want to create any message in sd-bus, we
need a valid bus pointer. That might make perfect sense for messages that
come from or will
is that users won't be
able to create self-contained Variants (they will have to provide their bus
connection explicitly to create a Variant).
Thanks a lot! Take care.
On Thu, May 9, 2019, 17:02 Lennart Poettering
wrote:
> On Mi, 08.05.19 22:50, Stanislav Angelovič (angelovi...@gmail.com) wr
Heya,
when writing sdbus-c++, we've observed that sd_bus_default_system function
called in a fresh new thread returns a bus with initial ref count 2. We
built our code upon that assumption -- we had to unref the bus twice when
the thread local storage got freed, otherwise we'd have gotten memory
Hi systemd-ers,
Having recent systemd sources, how can I build libsystemd.so only?
I was able to build the static version with this:
meson build/
ninja -C build version.h
ninja -C build libsystemd.a
But how can I build the shared one? Is there a configuration flag? (I'm not
familiar with
Hi,
Is there a way in sd-bus to "cancel" an async call issued through
sd_bus_call_async() or sd_bus_call_method_async()? Under cancelling here I
mean that the call issued can proceed to its end, but I'm just no more
interested in results and don't want sd-bus to invoke provided callback
when the
Hi Lennart,
Thanks a lot for your elaborate reply. See inline replies...
On Tue, Mar 5, 2019 at 11:27 AM Lennart Poettering
wrote:
>
> On Mo, 04.03.19 21:56, Stanislav Angelovič (angelovi...@gmail.com) wrote:
>
>
> sd-bus doesn't natively care for threads. However it's
Hi sd-bus-ers!
Quick question: How can I process a method call on service side in a
different thread, without creating race condition?
Longer version:
In sdbus-c++, we are working on server-side asynchronous method call
support.
In sd-bus, a service handles D-Bus method calls via
Hi guys,
sd-bus implements and automatically provides
org.freedesktop.DBus.Introspectable interface for each object vtable. Xml
output of Introspect method of that interface provides all necessary
information but one -- names of method parameters.
It's quite convenient that when one introspects
Hi guys,
in sd-bus, when D-Bus method callback of my service is invoked (someone is
calling me), is it possible to issue another synchronous call to another
service upon *the same sd_bus connection*? I.e. does sd_bus instance allow
that while it is processing incoming requests and invoking
Hi,
In sd-bus, I guess it is possible to have a one-to-one connection between a
service and a client, i.e. connection without D-bus daemon), am I right? If
yes, is there any example (in systemd source tree or elsewhere) of sd-bus
one-to-one communication usage that I could look at for inspiration
Hi folks,
Suppose we have a server whose methods may take relatively long time and I
would like to process them asynchronously within the server, so while a
client is waiting for reply to his time-consuming call, other clients
(which could be served quickly, for example) are not starved because
Hi Jan,
thanks for quick response. Instead of sd_bus_process(), we could perhaps
use sd_bus_flush() after creating the connection, as that one actually
processes the requests until the connection changes state to 'running'. I
tried this and it helped.
Regarding polling, I understand, but I fear
Hi,
We use sd-bus for DBus IPC in our own applications. Some applications of
ours cause the dbus daemon to issue "Connection has not authenticated soon
enough, closing it" message, leading to the
org.freedesktop.DBus.Error.Timeout error at the peer side when the
connection is used for an IPC
On Mon, Nov 28, 2016 at 6:45 PM, Lennart Poettering <lenn...@poettering.net>
wrote:
> On Sat, 26.11.16 16:01, Stanislav Angelovič (angelovi...@gmail.com) wrote:
>
> > Hi,
> >
> > A quick question: Is it possible to append contents (the serialized data)
> > of
Hi,
A quick question: Is it possible to append contents (the serialized data)
of an sd-bus message to another sd-bus message? Conversely, is it possible
to extract a part of sd-bus message contents into a separate message?
Details:
In the process of creating a method call message, I would like
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