From 3258aa750e3a5872c0e27ffff3d922607cfe688d Mon Sep 17 00:00:00 2001
From: Daan De Meyer <daan.j.demeyer@gmail.com>
Date: Sat, 11 Apr 2020 21:25:39 +0200
Subject: [PATCH] sd-bus: Add sd_bus_can_send docs

---
 man/rules/meson.build   |  1 +
 man/sd-bus.xml          |  1 +
 man/sd_bus_can_send.xml | 93 +++++++++++++++++++++++++++++++++++++++++
 3 files changed, 95 insertions(+)
 create mode 100644 man/sd_bus_can_send.xml

diff --git a/man/rules/meson.build b/man/rules/meson.build
index 16e0ffca3f7..dd8510c0f15 100644
--- a/man/rules/meson.build
+++ b/man/rules/meson.build
@@ -146,6 +146,7 @@ manpages = [
    'sd_bus_call_method_asyncv',
    'sd_bus_call_methodv'],
   ''],
+ ['sd_bus_can_send', '3', [], ''],
  ['sd_bus_close', '3', ['sd_bus_default_flush_close', 'sd_bus_flush'], ''],
  ['sd_bus_creds_get_pid',
   '3',
diff --git a/man/sd-bus.xml b/man/sd-bus.xml
index 4f1d8355d68..8fbc30a7866 100644
--- a/man/sd-bus.xml
+++ b/man/sd-bus.xml
@@ -50,6 +50,7 @@
 <citerefentry><refentrytitle>sd_bus_call_async</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
 <citerefentry><refentrytitle>sd_bus_call_method</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
 <citerefentry><refentrytitle>sd_bus_call_method_async</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
+<citerefentry><refentrytitle>sd_bus_can_send</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
 <citerefentry><refentrytitle>sd_bus_creds_get_pid</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
 <citerefentry><refentrytitle>sd_bus_creds_new_from_pid</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
 <citerefentry><refentrytitle>sd_bus_close</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
diff --git a/man/sd_bus_can_send.xml b/man/sd_bus_can_send.xml
new file mode 100644
index 00000000000..ba2a180ee2d
--- /dev/null
+++ b/man/sd_bus_can_send.xml
@@ -0,0 +1,93 @@
+<?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_can_send"
+          xmlns:xi="http://www.w3.org/2001/XInclude">
+
+  <refentryinfo>
+    <title>sd_bus_can_send</title>
+    <productname>systemd</productname>
+  </refentryinfo>
+
+  <refmeta>
+    <refentrytitle>sd_bus_can_send</refentrytitle>
+    <manvolnum>3</manvolnum>
+  </refmeta>
+
+  <refnamediv>
+    <refname>sd_bus_can_send</refname>
+
+    <refpurpose>Check which types can be sent over a bus object</refpurpose>
+  </refnamediv>
+
+  <refsynopsisdiv>
+    <funcsynopsis>
+      <funcsynopsisinfo>#include &lt;systemd/sd-bus.h&gt;</funcsynopsisinfo>
+
+      <funcprototype>
+        <funcdef>void <function>sd_bus_can_send</function></funcdef>
+        <paramdef>sd_bus *<parameter>bus</parameter></paramdef>
+        <paramdef>char <parameter>type</parameter></paramdef>
+      </funcprototype>
+    </funcsynopsis>
+  </refsynopsisdiv>
+
+  <refsect1>
+    <title>Description</title>
+
+    <para><function>sd_bus_can_send</function> is mostly used for checking if file descriptor
+    passing is available on the given bus. <parameter>type</parameter> can be any of the
+    <constant>SD_BUS_TYPE</constant> constants.</para>
+  </refsect1>
+
+  <refsect1>
+    <title>Return Value</title>
+
+    <para>On failure, <function>sd_bus_can_send()</function> returns a negative errno-style error
+    code. If values of the given type can be sent over the given bus, it returns a positive integer.
+    Otherwise, it returns zero.</para>
+
+    <refsect2>
+      <title>Errors</title>
+
+      <para>Returned errors may indicate the following problems:</para>
+
+      <variablelist>
+        <varlistentry>
+          <term><constant>-ENOPKG</constant></term>
+
+          <listitem><para>The bus object <parameter>bus</parameter> could not be resolved.</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>-ECHILD</constant></term>
+
+          <listitem><para>The bus object <parameter>bus</parameter> was created in a different
+          process.</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>
+    </para>
+  </refsect1>
+
+</refentry>