Adding upstream version 241.upstream/241upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 264 insertions, 0 deletions

diff --git a/man/sd_bus_message_append_basic.xml b/man/sd_bus_message_append_basic.xml
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+<?xml version='1.0'?>
+<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
+"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
+
+<!--
+  SPDX-License-Identifier: LGPL-2.1+
+-->
+
+<refentry id="sd_bus_message_append_basic" xmlns:xi="http://www.w3.org/2001/XInclude">
+
+  <refentryinfo>
+    <title>sd_bus_message_append_basic</title>
+    <productname>systemd</productname>
+  </refentryinfo>
+
+  <refmeta>
+    <refentrytitle>sd_bus_message_append_basic</refentrytitle>
+    <manvolnum>3</manvolnum>
+  </refmeta>
+
+  <refnamediv>
+    <refname>sd_bus_message_append_basic</refname>
+
+    <refpurpose>Attach a single field to a message</refpurpose>
+  </refnamediv>
+
+  <refsynopsisdiv>
+    <funcsynopsis>
+      <funcsynopsisinfo>#include &lt;systemd/sd-bus.h&gt;</funcsynopsisinfo>
+
+      <funcprototype>
+        <funcdef>int sd_bus_message_append_basic</funcdef>
+        <paramdef>sd_bus_message *<parameter>m</parameter></paramdef>
+        <paramdef>char <parameter>type</parameter></paramdef>
+        <paramdef>const void *<parameter>p</parameter></paramdef>
+      </funcprototype>
+    </funcsynopsis>
+  </refsynopsisdiv>
+
+  <refsect1>
+    <title>Description</title>
+
+    <para><function>sd_bus_message_append_basic()</function> appends a
+    single field to the message <parameter>m</parameter>. The
+    parameter <parameter>type</parameter> determines how the pointer
+    <parameter>p</parameter> is interpreted.
+    <parameter>type</parameter> must be one of the basic types as
+    defined by the <ulink
+    url="http://dbus.freedesktop.org/doc/dbus-specification.html#basic-types">Basic
+    Types</ulink> section of the D-Bus specification, and listed in
+    the table below.
+    </para>
+
+    <table id='format-specifiers'>
+      <title>Item type specifiers</title>
+
+      <tgroup cols='5'>
+        <colspec colname='specifier' />
+        <colspec colname='constant' />
+        <colspec colname='description' />
+        <colspec colname='size' />
+        <colspec colname='ctype' />
+        <thead>
+          <row>
+            <entry>Specifier</entry>
+            <entry>Constant</entry>
+            <entry>Description</entry>
+            <entry>Size</entry>
+            <entry>Expected C Type</entry>
+          </row>
+        </thead>
+        <tbody>
+          <row>
+            <entry><literal>y</literal></entry>
+            <entry><constant>SD_BUS_TYPE_BYTE</constant></entry>
+            <entry>unsigned integer</entry>
+            <entry>1 byte</entry>
+            <entry>uint8_t</entry>
+          </row>
+
+          <row>
+            <entry><literal>b</literal></entry>
+            <entry><constant>SD_BUS_TYPE_BOOLEAN</constant></entry>
+            <entry>boolean</entry>
+            <entry>4 bytes</entry>
+            <entry>int</entry>
+          </row>
+
+          <row>
+            <entry><literal>n</literal></entry>
+            <entry><constant>SD_BUS_TYPE_INT16</constant></entry>
+            <entry>signed integer</entry>
+            <entry>2 bytes</entry>
+            <entry>int16_t</entry>
+          </row>
+
+          <row>
+            <entry><literal>q</literal></entry>
+            <entry><constant>SD_BUS_TYPE_UINT16</constant></entry>
+            <entry>unsigned integer</entry>
+            <entry>2 bytes</entry>
+            <entry>uint16_t</entry>
+          </row>
+
+          <row>
+            <entry><literal>i</literal></entry>
+            <entry><constant>SD_BUS_TYPE_INT32</constant></entry>
+            <entry>signed integer</entry>
+            <entry>4 bytes</entry>
+            <entry>int32_t</entry>
+          </row>
+
+          <row>
+            <entry><literal>u</literal></entry>
+            <entry><constant>SD_BUS_TYPE_UINT32</constant></entry>
+            <entry>unsigned integer</entry>
+            <entry>4 bytes</entry>
+            <entry>uint32_t</entry>
+          </row>
+
+          <row>
+            <entry><literal>x</literal></entry>
+            <entry><constant>SD_BUS_TYPE_INT64</constant></entry>
+            <entry>signed integer</entry>
+            <entry>8 bytes</entry>
+            <entry>int64_t</entry>
+          </row>
+
+          <row>
+            <entry><literal>t</literal></entry>
+            <entry><constant>SD_BUS_TYPE_UINT64</constant></entry>
+            <entry>unsigned integer</entry>
+            <entry>8 bytes</entry>
+            <entry>uint64_t</entry>
+          </row>
+
+          <row>
+            <entry><literal>d</literal></entry>
+            <entry><constant>SD_BUS_TYPE_DOUBLE</constant></entry>
+            <entry>floating-point</entry>
+            <entry>8 bytes</entry>
+            <entry>double</entry>
+          </row>
+
+          <row>
+            <entry><literal>s</literal></entry>
+            <entry><constant>SD_BUS_TYPE_STRING</constant></entry>
+            <entry>Unicode string</entry>
+            <entry>variable</entry>
+            <entry>char[]</entry>
+          </row>
+
+          <row>
+            <entry><literal>o</literal></entry>
+            <entry><constant>SD_BUS_TYPE_OBJECT_PATH</constant></entry>
+            <entry>object path</entry>
+            <entry>variable</entry>
+            <entry>char[]</entry>
+          </row>
+
+          <row>
+            <entry><literal>g</literal></entry>
+            <entry><constant>SD_BUS_TYPE_SIGNATURE</constant></entry>
+            <entry>signature</entry>
+            <entry>variable</entry>
+            <entry>char[]</entry>
+          </row>
+
+          <row>
+            <entry><literal>h</literal></entry>
+            <entry><constant>SD_BUS_TYPE_UNIX_FD</constant></entry>
+            <entry>UNIX file descriptor</entry>
+            <entry>4 bytes</entry>
+            <entry>int</entry>
+          </row>
+       </tbody>
+      </tgroup>
+    </table>
+
+    <para>The value of the parameter is copied into a memory area held
+    by the message object, stays in the possession of the caller and
+    may hence be freely changed after this call without affecting the
+    bus message it has been added to. If <parameter>type</parameter>
+    is <literal>h</literal> (UNIX file descriptor), the descriptor is
+    duplicated by this call and the passed descriptor stays in
+    possession of the caller.</para>
+
+    <para>For types <literal>s</literal>, <literal>o</literal>, and
+    <literal>g</literal>, the parameter <parameter>p</parameter> is
+    interpreted as a pointer to a <constant>NUL</constant>-terminated
+    character sequence. As a special case, a <constant>NULL</constant>
+    pointer is interpreted as an empty string. The string should be
+    valid Unicode string encoded as UTF-8. In case of the two latter
+    types, the additional requirements for a D-Bus object path or
+    type signature should be satisfied. Those requirements should be
+    verified by the recipient of the message.
+    </para>
+  </refsect1>
+
+  <refsect1>
+    <title>Return Value</title>
+
+    <para>On success, this call returns 0 or a positive integer. On
+    failure, it returns a negative errno-style error code.</para>
+  </refsect1>
+
+  <refsect1 id='errors'>
+    <title>Errors</title>
+
+    <para>Returned errors may indicate the following problems:</para>
+
+    <variablelist>
+
+      <varlistentry>
+        <term><constant>-EINVAL</constant></term>
+
+        <listitem><para>Specified parameter is invalid.
+        </para></listitem>
+      </varlistentry>
+
+      <varlistentry>
+        <term><constant>-EPERM</constant></term>
+
+        <listitem><para>Message has been sealed.
+        </para></listitem>
+      </varlistentry>
+
+      <varlistentry>
+        <term><constant>-ESTALE</constant></term>
+
+        <listitem><para>Message is in invalid state.
+        </para></listitem>
+      </varlistentry>
+
+      <varlistentry>
+        <term><constant>-ENXIO</constant></term>
+
+        <listitem><para>Message cannot be appended to.
+        </para></listitem>
+      </varlistentry>
+
+      <varlistentry>
+        <term><constant>-ENOMEM</constant></term>
+
+        <listitem><para>Memory allocation failed.</para></listitem>
+      </varlistentry>
+    </variablelist>
+  </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_message_read_basic</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
+      <citerefentry><refentrytitle>sd_bus_message_append</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
+      <ulink url="http://dbus.freedesktop.org/doc/dbus-specification.html">The D-Bus specification</ulink>
+    </para>
+  </refsect1>
+
+</refentry>