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c5fd8c39 | 1 | <?xml version='1.0'?> |
3a54a157 ZJS |
2 | <!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN" |
3 | "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd"> | |
0307f791 | 4 | <!-- SPDX-License-Identifier: LGPL-2.1+ --> |
c5fd8c39 ZJS |
5 | |
6 | <refentry id="sd_bus_message_copy" xmlns:xi="http://www.w3.org/2001/XInclude"> | |
7 | ||
8 | <refentryinfo> | |
9 | <title>sd_bus_message_copy</title> | |
10 | <productname>systemd</productname> | |
11 | </refentryinfo> | |
12 | ||
13 | <refmeta> | |
14 | <refentrytitle>sd_bus_message_copy</refentrytitle> | |
15 | <manvolnum>3</manvolnum> | |
16 | </refmeta> | |
17 | ||
18 | <refnamediv> | |
19 | <refname>sd_bus_message_copy</refname> | |
20 | ||
21 | <refpurpose>Copy the contents of one message to another</refpurpose> | |
22 | </refnamediv> | |
23 | ||
24 | <refsynopsisdiv> | |
25 | <funcsynopsis> | |
26 | <funcsynopsisinfo>#include <systemd/sd-bus.h></funcsynopsisinfo> | |
27 | ||
28 | <funcprototype> | |
29 | <funcdef>int sd_bus_message_copy</funcdef> | |
30 | <paramdef>sd_bus_message *<parameter>m</parameter></paramdef> | |
31 | <paramdef>sd_bus_message *<parameter>source</parameter></paramdef> | |
32 | <paramdef>int <parameter>all</parameter></paramdef> | |
33 | </funcprototype> | |
34 | </funcsynopsis> | |
35 | </refsynopsisdiv> | |
36 | ||
37 | <refsect1> | |
38 | <title>Description</title> | |
39 | ||
40 | <para><function>sd_bus_message_copy()</function> copies the contents from | |
41 | message <parameter>source</parameter> to <parameter>m</parameter>. If | |
42 | <parameter>all</parameter> is false, a single complete type is copied | |
43 | (basic or container). If <parameter>all</parameter> is true, the contents | |
44 | are copied until the end of the currently open container or the end | |
45 | of <parameter>source</parameter>.</para> | |
46 | </refsect1> | |
47 | ||
48 | <refsect1> | |
49 | <title>Return Value</title> | |
50 | ||
51 | <para>On success, this call returns true if anything was copied, and false if | |
52 | there was nothing to copy. On failure, it returns a negative errno-style error | |
53 | code.</para> | |
54 | </refsect1> | |
55 | ||
56 | <refsect1 id='errors'> | |
57 | <title>Errors</title> | |
58 | ||
59 | <para>Returned errors may indicate the following problems:</para> | |
60 | ||
61 | <variablelist> | |
62 | ||
63 | <varlistentry> | |
64 | <term><constant>-EINVAL</constant></term> | |
65 | ||
66 | <listitem><para><parameter>source</parameter> or <parameter>m</parameter> are | |
67 | <constant>NULL</constant>.</para></listitem> | |
68 | </varlistentry> | |
69 | ||
70 | <varlistentry> | |
71 | <term><constant>-EPERM</constant></term> | |
72 | ||
73 | <listitem><para>Message <parameter>m</parameter> has been sealed or | |
74 | <parameter>source</parameter> has <emphasis>not</emphasis> been sealed. | |
75 | </para></listitem> | |
76 | </varlistentry> | |
77 | ||
78 | <varlistentry> | |
79 | <term><constant>-ESTALE</constant></term> | |
80 | ||
81 | <listitem><para>Destination message is in invalid state. | |
82 | </para></listitem> | |
83 | </varlistentry> | |
84 | ||
85 | <varlistentry> | |
86 | <term><constant>-ENXIO</constant></term> | |
87 | ||
88 | <listitem><para>Destination message cannot be appended to. | |
89 | </para></listitem> | |
90 | </varlistentry> | |
91 | ||
92 | <varlistentry> | |
93 | <term><constant>-ENOMEM</constant></term> | |
94 | ||
95 | <listitem><para>Memory allocation failed.</para></listitem> | |
96 | </varlistentry> | |
97 | </variablelist> | |
98 | </refsect1> | |
99 | ||
100 | <xi:include href="libsystemd-pkgconfig.xml" /> | |
101 | ||
102 | <refsect1> | |
103 | <title>See Also</title> | |
104 | ||
105 | <para> | |
106 | <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>, | |
107 | <citerefentry><refentrytitle>sd-bus</refentrytitle><manvolnum>3</manvolnum></citerefentry>, | |
108 | <citerefentry><refentrytitle>sd_bus_message_append</refentrytitle><manvolnum>3</manvolnum></citerefentry> | |
109 | </para> | |
110 | </refsect1> | |
111 | ||
112 | </refentry> |