Compare commits

...

2 Commits

Author SHA1 Message Date
ml 992622c428 man: fix typo in loader.conf(5) 2020-03-22 20:22:03 +01:00
Daan De Meyer b0f4c02e2d sd-bus: Add sd_bus_send docs + cleanups. 2020-03-22 20:21:11 +01:00
6 changed files with 143 additions and 5 deletions

View File

@ -165,7 +165,7 @@
variable is set, and then derive the random seed to pass to the OS from the combination. If
<literal>always</literal> the boot loader will do so even if <varname>LoaderSystemToken</varname> is
not set. This mode is useful in environments where protection against OS image reuse is not a
concern, and the random seed shall be used even with no further setup in place. User <command>bootctl
concern, and the random seed shall be used even with no further setup in place. Use <command>bootctl
random-seed</command> to initialize both the random seed file in the ESP and the system token EFI
variable.</para>

View File

@ -332,6 +332,7 @@ manpages = [
'sd_bus_release_name_async',
'sd_bus_request_name_async'],
''],
['sd_bus_send', '3', [], ''],
['sd_bus_set_address', '3', ['sd_bus_get_address'], ''],
['sd_bus_set_close_on_exit', '3', ['sd_bus_get_close_on_exit'], ''],
['sd_bus_set_connected_signal', '3', ['sd_bus_get_connected_signal'], ''],

View File

@ -89,6 +89,7 @@
<citerefentry><refentrytitle>sd_bus_reply_method_return</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
<citerefentry><refentrytitle>sd_bus_reply_method_error</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
<citerefentry><refentrytitle>sd_bus_request_name</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
<citerefentry><refentrytitle>sd_bus_send</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
<citerefentry><refentrytitle>sd_bus_set_address</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
<citerefentry><refentrytitle>sd_bus_set_connected_signal</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
<citerefentry><refentrytitle>sd_bus_set_description</refentrytitle><manvolnum>3</manvolnum></citerefentry>,

View File

@ -128,14 +128,14 @@
<varlistentry>
<term><constant>-ENOTCONN</constant></term>
<listitem><para>The bus parameter <parameter>bus</parameter> is <constant>NULL</constant>
or the bus is not connected.</para></listitem>
<listitem><para>The input parameter <parameter>bus</parameter> is
<constant>NULL</constant> or the bus is not connected.</para></listitem>
</varlistentry>
<varlistentry>
<term><constant>-ECONNRESET</constant></term>
<listitem><para>The client was disconnected while waiting for the response.
<listitem><para>The bus connection was closed while waiting for the response.
</para></listitem>
</varlistentry>

136
man/sd_bus_send.xml Normal file
View File

@ -0,0 +1,136 @@
<?xml version='1.0'?>
<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
<!-- SPDX-License-Identifier: LGPL-2.1+ -->
<refentry id="sd_bus_send"
xmlns:xi="http://www.w3.org/2001/XInclude">
<refentryinfo>
<title>sd_bus_send</title>
<productname>systemd</productname>
</refentryinfo>
<refmeta>
<refentrytitle>sd_bus_send</refentrytitle>
<manvolnum>3</manvolnum>
</refmeta>
<refnamediv>
<refname>sd_bus_send</refname>
<refpurpose>Queue a D-Bus message for transfer</refpurpose>
</refnamediv>
<refsynopsisdiv>
<funcsynopsis>
<funcsynopsisinfo>#include &lt;systemd/sd-bus.h&gt;</funcsynopsisinfo>
<funcprototype>
<funcdef>int <function>sd_bus_send</function></funcdef>
<paramdef>sd_bus *<parameter>bus</parameter></paramdef>
<paramdef>sd_bus_message *<parameter>m</parameter></paramdef>
<paramdef>uint64_t *<parameter>cookie</parameter></paramdef>
</funcprototype>
</funcsynopsis>
</refsynopsisdiv>
<refsect1>
<title>Description</title>
<para><function>sd_bus_send()</function> queues the bus message object <parameter>m</parameter>
for transfer. If <parameter>bus</parameter> is <constant>NULL</constant>, the bus that
<parameter>m</parameter> is attached to is used. <parameter>bus</parameter> only needs to be set
when the message is sent to a different bus than the one it's attached to, for example when
forwarding messages. If the output parameter <parameter>cookie</parameter> is not
<constant>NULL</constant>, it is set to the message identifier. This value can later be used to
match incoming replies to their corresponding messages. If <parameter>cookie</parameter> is set
to <constant>NULL</constant> and the message is not sealed, <function>sd_bus_send()</function>
assumes the message <parameter>m</parameter> doesn't expect a reply and adds the necessary
headers to indicate this.</para>
<para>Note that in most scenarios, <function>sd_bus_send()</function> should not be called
directly. Instead, use higher level functions such as
<citerefentry><refentrytitle>sd_bus_call_method</refentrytitle><manvolnum>3</manvolnum></citerefentry> and
<citerefentry><refentrytitle>sd_bus_reply_method_return</refentrytitle><manvolnum>3</manvolnum></citerefentry>
which call <function>sd_bus_send()</function> internally.</para>
</refsect1>
<refsect1>
<title>Return Value</title>
<para>On success, this function returns a non-negative integer. On failure, it returns a
negative errno-style error code.</para>
<refsect2 id='errors'>
<title>Errors</title>
<para>Returned errors may indicate the following problems:</para>
<variablelist>
<varlistentry>
<term><constant>-EINVAL</constant></term>
<listitem><para>The input parameter <parameter>m</parameter> is <constant>NULL</constant>.
</para></listitem>
</varlistentry>
<varlistentry>
<term><constant>-EOPNOTSUPP</constant></term>
<listitem><para>The bus connection does not support sending file descriptors.
</para></listitem>
</varlistentry>
<varlistentry>
<term><constant>-ECHILD</constant></term>
<listitem><para>The bus connection was allocated in a parent process and is being reused
in a child process after <function>fork()</function>.</para></listitem>
</varlistentry>
<varlistentry>
<term><constant>-ENOBUFS</constant></term>
<listitem><para>The bus connection's write queue is full.</para></listitem>
</varlistentry>
<varlistentry>
<term><constant>-ENOTCONN</constant></term>
<listitem><para>The input parameter <parameter>bus</parameter> is
<constant>NULL</constant> or the bus is not connected.</para></listitem>
</varlistentry>
<varlistentry>
<term><constant>-ECONNRESET</constant></term>
<listitem><para>The bus connection was closed while waiting for the response.
</para></listitem>
</varlistentry>
<varlistentry>
<term><constant>-ENOMEM</constant></term>
<listitem><para>Memory allocation failed.</para></listitem>
</varlistentry>
</variablelist>
</refsect2>
</refsect1>
<xi:include href="libsystemd-pkgconfig.xml" />
<refsect1>
<title>See Also</title>
<para>
<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
<citerefentry><refentrytitle>sd-bus</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
<citerefentry><refentrytitle>sd_bus_call_method</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
<citerefentry><refentrytitle>sd_bus_message_set_destination</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
<citerefentry><refentrytitle>sd_bus_reply_method_return</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
<citerefentry><refentrytitle>sd_bus_send_to</refentrytitle><manvolnum>3</manvolnum></citerefentry>
</para>
</refsect1>
</refentry>

View File

@ -96,7 +96,7 @@
<para>
<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
<citerefentry><refentrytitle>sd-bus</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
<citerefentry><refentrytitle>sd_bus_call</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
<citerefentry><refentrytitle>sd_bus_call</refentrytitle><manvolnum>3</manvolnum></citerefentry>
</para>
</refsect1>