From 7f9f55e1b3354c9565f62a2bf331f9b25db9650d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Zbigniew=20J=C4=99drzejewski-Szmek?= <zbyszek@in.waw.pl>
Date: Sat, 11 Aug 2018 10:16:17 +0200
Subject: [PATCH] man: add sd_bus_message_read_array(3)

---
 man/rules/meson.build             |   1 +
 man/sd-bus.xml                    |   3 +-
 man/sd_bus_message_read_array.xml | 108 ++++++++++++++++++++++++++++++
 3 files changed, 111 insertions(+), 1 deletion(-)
 create mode 100644 man/sd_bus_message_read_array.xml

diff --git a/man/rules/meson.build b/man/rules/meson.build
index 96b56569e3..548499d749 100644
--- a/man/rules/meson.build
+++ b/man/rules/meson.build
@@ -242,6 +242,7 @@ manpages = [
   ''],
  ['sd_bus_message_new_signal', '3', [], ''],
  ['sd_bus_message_read', '3', ['sd_bus_message_readv'], ''],
+ ['sd_bus_message_read_array', '3', [], ''],
  ['sd_bus_message_read_basic', '3', [], ''],
  ['sd_bus_message_rewind', '3', [], ''],
  ['sd_bus_message_set_destination',
diff --git a/man/sd-bus.xml b/man/sd-bus.xml
index 7c0b3c1e6e..fbbd491ccb 100644
--- a/man/sd-bus.xml
+++ b/man/sd-bus.xml
@@ -65,8 +65,9 @@
 <citerefentry><refentrytitle>sd_bus_message_new_method_call</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
 <citerefentry><refentrytitle>sd_bus_message_new_method_error</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
 <citerefentry><refentrytitle>sd_bus_message_new_signal</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
-<citerefentry><refentrytitle>sd_bus_message_read_basic</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
 <citerefentry><refentrytitle>sd_bus_message_read</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
+<citerefentry><refentrytitle>sd_bus_message_read_array</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
+<citerefentry><refentrytitle>sd_bus_message_read_basic</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
 <citerefentry><refentrytitle>sd_bus_message_rewind</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
 <citerefentry><refentrytitle>sd_bus_message_set_destination</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
 <citerefentry><refentrytitle>sd_bus_message_set_expect_reply</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
diff --git a/man/sd_bus_message_read_array.xml b/man/sd_bus_message_read_array.xml
new file mode 100644
index 0000000000..31481272bb
--- /dev/null
+++ b/man/sd_bus_message_read_array.xml
@@ -0,0 +1,108 @@
+<?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_read_array">
+
+  <refentryinfo>
+    <title>sd_bus_message_read_array</title>
+    <productname>systemd</productname>
+  </refentryinfo>
+
+  <refmeta>
+    <refentrytitle>sd_bus_message_read_array</refentrytitle>
+    <manvolnum>3</manvolnum>
+  </refmeta>
+
+  <refnamediv>
+    <refname>sd_bus_message_read_array</refname>
+
+    <refpurpose>Access an array of elements in a message</refpurpose>
+  </refnamediv>
+
+  <refsynopsisdiv>
+    <funcsynopsis>
+      <funcsynopsisinfo>#include &lt;systemd/sd-bus.h&gt;</funcsynopsisinfo>
+
+      <funcprototype>
+        <funcdef>int <function>sd_bus_message_read_array</function></funcdef>
+        <paramdef>sd_bus_message *<parameter>m</parameter></paramdef>
+        <paramdef>char <parameter>type</parameter></paramdef>
+        <paramdef>const void **<parameter>ptr</parameter></paramdef>
+        <paramdef>size_t *<parameter>size</parameter></paramdef>
+      </funcprototype>
+    </funcsynopsis>
+  </refsynopsisdiv>
+
+  <refsect1>
+    <title>Description</title>
+
+    <para><function>sd_bus_message_read_array()</function> gives access to an element array in
+    message <parameter>m</parameter>. The "read pointer" in the message must be right before an
+    array of type <parameter>type</parameter>. As a special case, <parameter>type</parameter> may be
+    <constant>NUL</constant>, in which case any type is acceptable. A pointer to the array data is
+    returned in the parameter <parameter>ptr</parameter> and the size of array data (in bytes) is
+    returned in the parameter <parameter>size</parameter>. If <parameter>size</parameter> is 0, a
+    valid non-null pointer will be returned, but it may not be dereferenced. The data is aligned as
+    appropriate for the data type. The data is part of the message — it may not be modified and is
+    valid only as long as the message is referenced. After this function returns, the "read pointer"
+    points at the next element after the array.</para>
+  </refsect1>
+
+  <refsect1>
+    <title>Return Value</title>
+
+    <para>
+      On success, <function>sd_bus_message_read_array()</function> 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 type is invalid or the message parameter or one of the output
+        parameters are <constant>NULL</constant>.</para></listitem>
+      </varlistentry>
+
+      <varlistentry>
+        <term><constant>-EOPNOTSUPP</constant></term>
+
+        <listitem><para>The byte order in the message is different than native byte
+        order.</para></listitem>
+      </varlistentry>
+
+      <varlistentry>
+        <term><constant>-EPERM</constant></term>
+
+        <listitem><para>The message is not sealed.</para></listitem>
+      </varlistentry>
+
+      <varlistentry>
+        <term><constant>-EBADMSG</constant></term>
+
+        <listitem><para>The message cannot be parsed.</para></listitem>
+      </varlistentry>
+
+    </variablelist>
+  </refsect1>
+
+  <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</refentrytitle><manvolnum>3</manvolnum></citerefentry>
+    </para>
+  </refsect1>
+
+</refentry>