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992622c428
Author | SHA1 | Date |
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ml | 992622c428 | |
Daan De Meyer | b0f4c02e2d |
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@ -165,7 +165,7 @@
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variable is set, and then derive the random seed to pass to the OS from the combination. If
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<literal>always</literal> the boot loader will do so even if <varname>LoaderSystemToken</varname> is
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not set. This mode is useful in environments where protection against OS image reuse is not a
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concern, and the random seed shall be used even with no further setup in place. User <command>bootctl
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concern, and the random seed shall be used even with no further setup in place. Use <command>bootctl
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random-seed</command> to initialize both the random seed file in the ESP and the system token EFI
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variable.</para>
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@ -332,6 +332,7 @@ manpages = [
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'sd_bus_release_name_async',
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'sd_bus_request_name_async'],
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''],
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['sd_bus_send', '3', [], ''],
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['sd_bus_set_address', '3', ['sd_bus_get_address'], ''],
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['sd_bus_set_close_on_exit', '3', ['sd_bus_get_close_on_exit'], ''],
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['sd_bus_set_connected_signal', '3', ['sd_bus_get_connected_signal'], ''],
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@ -89,6 +89,7 @@
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<citerefentry><refentrytitle>sd_bus_reply_method_return</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>sd_bus_reply_method_error</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>sd_bus_request_name</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>sd_bus_send</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>sd_bus_set_address</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>sd_bus_set_connected_signal</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>sd_bus_set_description</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
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@ -128,14 +128,14 @@
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<varlistentry>
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<term><constant>-ENOTCONN</constant></term>
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<listitem><para>The bus parameter <parameter>bus</parameter> is <constant>NULL</constant>
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or the bus is not connected.</para></listitem>
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<listitem><para>The input parameter <parameter>bus</parameter> is
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<constant>NULL</constant> or the bus is not connected.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><constant>-ECONNRESET</constant></term>
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<listitem><para>The client was disconnected while waiting for the response.
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<listitem><para>The bus connection was closed while waiting for the response.
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</para></listitem>
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</varlistentry>
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@ -0,0 +1,136 @@
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<?xml version='1.0'?>
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<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
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"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
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<!-- SPDX-License-Identifier: LGPL-2.1+ -->
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<refentry id="sd_bus_send"
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xmlns:xi="http://www.w3.org/2001/XInclude">
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<refentryinfo>
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<title>sd_bus_send</title>
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<productname>systemd</productname>
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</refentryinfo>
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<refmeta>
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<refentrytitle>sd_bus_send</refentrytitle>
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<manvolnum>3</manvolnum>
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</refmeta>
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<refnamediv>
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<refname>sd_bus_send</refname>
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<refpurpose>Queue a D-Bus message for transfer</refpurpose>
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</refnamediv>
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<refsynopsisdiv>
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<funcsynopsis>
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<funcsynopsisinfo>#include <systemd/sd-bus.h></funcsynopsisinfo>
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<funcprototype>
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<funcdef>int <function>sd_bus_send</function></funcdef>
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<paramdef>sd_bus *<parameter>bus</parameter></paramdef>
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<paramdef>sd_bus_message *<parameter>m</parameter></paramdef>
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<paramdef>uint64_t *<parameter>cookie</parameter></paramdef>
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</funcprototype>
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</funcsynopsis>
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</refsynopsisdiv>
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<refsect1>
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<title>Description</title>
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<para><function>sd_bus_send()</function> queues the bus message object <parameter>m</parameter>
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for transfer. If <parameter>bus</parameter> is <constant>NULL</constant>, the bus that
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<parameter>m</parameter> is attached to is used. <parameter>bus</parameter> only needs to be set
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when the message is sent to a different bus than the one it's attached to, for example when
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forwarding messages. If the output parameter <parameter>cookie</parameter> is not
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<constant>NULL</constant>, it is set to the message identifier. This value can later be used to
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match incoming replies to their corresponding messages. If <parameter>cookie</parameter> is set
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to <constant>NULL</constant> and the message is not sealed, <function>sd_bus_send()</function>
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assumes the message <parameter>m</parameter> doesn't expect a reply and adds the necessary
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headers to indicate this.</para>
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<para>Note that in most scenarios, <function>sd_bus_send()</function> should not be called
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directly. Instead, use higher level functions such as
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<citerefentry><refentrytitle>sd_bus_call_method</refentrytitle><manvolnum>3</manvolnum></citerefentry> and
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<citerefentry><refentrytitle>sd_bus_reply_method_return</refentrytitle><manvolnum>3</manvolnum></citerefentry>
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which call <function>sd_bus_send()</function> internally.</para>
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</refsect1>
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<refsect1>
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<title>Return Value</title>
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<para>On success, this function returns a non-negative integer. On failure, it returns a
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negative errno-style error code.</para>
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<refsect2 id='errors'>
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<title>Errors</title>
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<para>Returned errors may indicate the following problems:</para>
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<variablelist>
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<varlistentry>
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<term><constant>-EINVAL</constant></term>
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<listitem><para>The input parameter <parameter>m</parameter> is <constant>NULL</constant>.
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</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><constant>-EOPNOTSUPP</constant></term>
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<listitem><para>The bus connection does not support sending file descriptors.
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</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><constant>-ECHILD</constant></term>
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<listitem><para>The bus connection was allocated in a parent process and is being reused
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in a child process after <function>fork()</function>.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><constant>-ENOBUFS</constant></term>
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<listitem><para>The bus connection's write queue is full.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><constant>-ENOTCONN</constant></term>
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<listitem><para>The input parameter <parameter>bus</parameter> is
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<constant>NULL</constant> or the bus is not connected.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><constant>-ECONNRESET</constant></term>
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<listitem><para>The bus connection was closed while waiting for the response.
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</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><constant>-ENOMEM</constant></term>
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<listitem><para>Memory allocation failed.</para></listitem>
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</varlistentry>
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</variablelist>
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</refsect2>
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</refsect1>
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<xi:include href="libsystemd-pkgconfig.xml" />
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<refsect1>
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<title>See Also</title>
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<para>
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<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>sd-bus</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>sd_bus_call_method</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>sd_bus_message_set_destination</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>sd_bus_reply_method_return</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>sd_bus_send_to</refentrytitle><manvolnum>3</manvolnum></citerefentry>
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</para>
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</refsect1>
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</refentry>
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@ -96,7 +96,7 @@
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<para>
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<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>sd-bus</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>sd_bus_call</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>sd_bus_call</refentrytitle><manvolnum>3</manvolnum></citerefentry>
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</para>
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</refsect1>
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