blob: 66a49fed475eb6cc747c9a31f342e57914ba09de (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
|
<?xml version='1.0'?>
<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
"http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd">
<!-- SPDX-License-Identifier: LGPL-2.1-or-later -->
<refentry id="sd_bus_reply_method_error"
xmlns:xi="http://www.w3.org/2001/XInclude">
<refentryinfo>
<title>sd_bus_reply_method_error</title>
<productname>systemd</productname>
</refentryinfo>
<refmeta>
<refentrytitle>sd_bus_reply_method_error</refentrytitle>
<manvolnum>3</manvolnum>
</refmeta>
<refnamediv>
<refname>sd_bus_reply_method_error</refname>
<refname>sd_bus_reply_method_errorf</refname>
<refname>sd_bus_reply_method_errorfv</refname>
<refname>sd_bus_reply_method_errno</refname>
<refname>sd_bus_reply_method_errnof</refname>
<refname>sd_bus_reply_method_errnofv</refname>
<refpurpose>Reply with an error to a D-Bus method call</refpurpose>
</refnamediv>
<refsynopsisdiv>
<funcsynopsis>
<funcsynopsisinfo>#include <systemd/sd-bus.h></funcsynopsisinfo>
<funcprototype>
<funcdef>int sd_bus_reply_method_error</funcdef>
<paramdef>sd_bus_message *<parameter>call</parameter></paramdef>
<paramdef>const sd_bus_error *<parameter>e</parameter></paramdef>
</funcprototype>
<funcprototype>
<funcdef>int sd_bus_reply_method_errorf</funcdef>
<paramdef>sd_bus_message *<parameter>call</parameter></paramdef>
<paramdef>const char *<parameter>name</parameter></paramdef>
<paramdef>const char *<parameter>format</parameter></paramdef>
<paramdef>...</paramdef>
</funcprototype>
<funcprototype>
<funcdef>int sd_bus_reply_method_errorfv</funcdef>
<paramdef>sd_bus_message *<parameter>call</parameter></paramdef>
<paramdef>const char *<parameter>name</parameter></paramdef>
<paramdef>const char *<parameter>format</parameter></paramdef>
<paramdef>va_list <parameter>ap</parameter></paramdef>
</funcprototype>
<funcprototype>
<funcdef>int sd_bus_reply_method_errno</funcdef>
<paramdef>sd_bus_message *<parameter>call</parameter></paramdef>
<paramdef>int <parameter>error</parameter></paramdef>
<paramdef>const sd_bus_error *<parameter>p</parameter></paramdef>
</funcprototype>
<funcprototype>
<funcdef>int sd_bus_reply_method_errnof</funcdef>
<paramdef>sd_bus_message *<parameter>call</parameter></paramdef>
<paramdef>int <parameter>error</parameter></paramdef>
<paramdef>const char *<parameter>format</parameter></paramdef>
<paramdef>...</paramdef>
</funcprototype>
<funcprototype>
<funcdef>int sd_bus_reply_method_errnofv</funcdef>
<paramdef>sd_bus_message *<parameter>call</parameter></paramdef>
<paramdef>int <parameter>error</parameter></paramdef>
<paramdef>const char *<parameter>format</parameter></paramdef>
<paramdef>va_list <parameter>ap</parameter></paramdef>
</funcprototype>
</funcsynopsis>
</refsynopsisdiv>
<refsect1>
<title>Description</title>
<para>The <function>sd_bus_reply_method_error()</function> function sends an error reply to the
<parameter>call</parameter> message. The error structure <parameter>e</parameter> specifies the
error to send, and is used as described in
<citerefentry><refentrytitle>sd_bus_message_new_method_error</refentrytitle><manvolnum>3</manvolnum></citerefentry>.
If no reply is expected to <parameter>call</parameter>, this function succeeds without sending a
reply.</para>
<para>The <function>sd_bus_reply_method_errorf()</function> is to
<function>sd_bus_reply_method_error()</function> what
<function>sd_bus_message_new_method_errorf()</function> is to
<function>sd_bus_message_new_method_error()</function>.</para>
<para>The <function>sd_bus_reply_method_errno()</function> is to
<function>sd_bus_reply_method_error()</function> what
<function>sd_bus_message_new_method_errno()</function> is to
<function>sd_bus_message_new_method_error()</function>.</para>
<para>The <function>sd_bus_reply_method_errnof()</function> is to
<function>sd_bus_reply_method_error()</function> what
<function>sd_bus_message_new_method_errnof()</function> is to
<function>sd_bus_message_new_method_error()</function>.</para>
</refsect1>
<refsect1>
<title>Return Value</title>
<para>This function returns a non-negative integer if the error reply was successfully sent or
if <parameter>call</parameter> does not expect a reply. On failure, it returns a negative
errno-style error code.</para>
<refsect2>
<title>Errors</title>
<para>Returned errors may indicate the following problems:</para>
<variablelist>
<varlistentry>
<term><constant>-EINVAL</constant></term>
<listitem><para>The input parameter <parameter>call</parameter> is
<constant>NULL</constant>.</para>
<para>Message <parameter>call</parameter> is not a method call message.</para>
<para>Message <parameter>call</parameter> is not attached to a bus.</para>
<para>The error parameter <parameter>e</parameter> to
<function>sd_bus_reply_method_error()</function> is not set, see
<citerefentry><refentrytitle>sd_bus_error_is_set</refentrytitle><manvolnum>3</manvolnum></citerefentry>.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><constant>-EPERM</constant></term>
<listitem><para>Message <parameter>call</parameter> has been sealed.
</para></listitem>
</varlistentry>
<varlistentry>
<term><constant>-ENOTCONN</constant></term>
<listitem><para>The bus to which message <parameter>call</parameter> is attached is not
connected.</para></listitem>
</varlistentry>
<varlistentry>
<term><constant>-ENOMEM</constant></term>
<listitem><para>Memory allocation failed.</para></listitem>
</varlistentry>
</variablelist>
<para>In addition, any error returned by
<citerefentry><refentrytitle>sd_bus_send</refentrytitle><manvolnum>1</manvolnum></citerefentry>
may be returned.</para>
</refsect2>
</refsect1>
<xi:include href="libsystemd-pkgconfig.xml" />
<refsect1>
<title>See Also</title>
<para><simplelist type="inline">
<member><citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry></member>
<member><citerefentry><refentrytitle>sd-bus</refentrytitle><manvolnum>3</manvolnum></citerefentry></member>
<member><citerefentry><refentrytitle>sd_bus_message_new_method_error</refentrytitle><manvolnum>3</manvolnum></citerefentry></member>
</simplelist></para>
</refsect1>
</refentry>
|
