systemd/man/sd-bus-errors.xml

<?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-or-later -->

<refentry id="sd-bus-errors"
          xmlns:xi="http://www.w3.org/2001/XInclude">

  <refentryinfo>
    <title>sd-bus-errors</title>
    <productname>systemd</productname>
  </refentryinfo>

  <refmeta>
    <refentrytitle>sd-bus-errors</refentrytitle>
    <manvolnum>3</manvolnum>
  </refmeta>

  <refnamediv>
    <refname>sd-bus-errors</refname>
    <refname>SD_BUS_ERROR_FAILED</refname>
    <refname>SD_BUS_ERROR_NO_MEMORY</refname>
    <refname>SD_BUS_ERROR_SERVICE_UNKNOWN</refname>
    <refname>SD_BUS_ERROR_NAME_HAS_NO_OWNER</refname>
    <refname>SD_BUS_ERROR_NO_REPLY</refname>
    <refname>SD_BUS_ERROR_IO_ERROR</refname>
    <refname>SD_BUS_ERROR_BAD_ADDRESS</refname>
    <refname>SD_BUS_ERROR_NOT_SUPPORTED</refname>
    <refname>SD_BUS_ERROR_LIMITS_EXCEEDED</refname>
    <refname>SD_BUS_ERROR_ACCESS_DENIED</refname>
    <refname>SD_BUS_ERROR_AUTH_FAILED</refname>
    <refname>SD_BUS_ERROR_NO_SERVER</refname>
    <refname>SD_BUS_ERROR_TIMEOUT</refname>
    <refname>SD_BUS_ERROR_NO_NETWORK</refname>
    <refname>SD_BUS_ERROR_ADDRESS_IN_USE</refname>
    <refname>SD_BUS_ERROR_DISCONNECTED</refname>
    <refname>SD_BUS_ERROR_INVALID_ARGS</refname>
    <refname>SD_BUS_ERROR_FILE_NOT_FOUND</refname>
    <refname>SD_BUS_ERROR_FILE_EXISTS</refname>
    <refname>SD_BUS_ERROR_UNKNOWN_METHOD</refname>
    <refname>SD_BUS_ERROR_UNKNOWN_OBJECT</refname>
    <refname>SD_BUS_ERROR_UNKNOWN_INTERFACE</refname>
    <refname>SD_BUS_ERROR_UNKNOWN_PROPERTY</refname>
    <refname>SD_BUS_ERROR_PROPERTY_READ_ONLY</refname>
    <refname>SD_BUS_ERROR_UNIX_PROCESS_ID_UNKNOWN</refname>
    <refname>SD_BUS_ERROR_INVALID_SIGNATURE</refname>
    <refname>SD_BUS_ERROR_INCONSISTENT_MESSAGE</refname>
    <refname>SD_BUS_ERROR_TIMED_OUT</refname>
    <refname>SD_BUS_ERROR_MATCH_RULE_NOT_FOUND</refname>
    <refname>SD_BUS_ERROR_MATCH_RULE_INVALID</refname>
    <refname>SD_BUS_ERROR_INTERACTIVE_AUTHORIZATION_REQUIRED</refname>
    <refname>SD_BUS_ERROR_INVALID_FILE_CONTENT</refname>
    <refname>SD_BUS_ERROR_SELINUX_SECURITY_CONTEXT_UNKNOWN</refname>
    <refname>SD_BUS_ERROR_OBJECT_PATH_IN_USE</refname>

    <refpurpose>Standard D-Bus error names</refpurpose>
  </refnamediv>

  <refsynopsisdiv>
    <funcsynopsis>
      <funcsynopsisinfo>#include &lt;systemd/sd-bus.h&gt;</funcsynopsisinfo>

      <funcsynopsisinfo>
#define SD_BUS_ERROR_FAILED                  "org.freedesktop.DBus.Error.Failed"
#define SD_BUS_ERROR_NO_MEMORY               "org.freedesktop.DBus.Error.NoMemory"
#define SD_BUS_ERROR_SERVICE_UNKNOWN         "org.freedesktop.DBus.Error.ServiceUnknown"
#define SD_BUS_ERROR_NAME_HAS_NO_OWNER       "org.freedesktop.DBus.Error.NameHasNoOwner"
#define SD_BUS_ERROR_NO_REPLY                "org.freedesktop.DBus.Error.NoReply"
#define SD_BUS_ERROR_IO_ERROR                "org.freedesktop.DBus.Error.IOError"
#define SD_BUS_ERROR_BAD_ADDRESS             "org.freedesktop.DBus.Error.BadAddress"
#define SD_BUS_ERROR_NOT_SUPPORTED           "org.freedesktop.DBus.Error.NotSupported"
#define SD_BUS_ERROR_LIMITS_EXCEEDED         "org.freedesktop.DBus.Error.LimitsExceeded"
#define SD_BUS_ERROR_ACCESS_DENIED           "org.freedesktop.DBus.Error.AccessDenied"
#define SD_BUS_ERROR_AUTH_FAILED             "org.freedesktop.DBus.Error.AuthFailed"
#define SD_BUS_ERROR_NO_SERVER               "org.freedesktop.DBus.Error.NoServer"
#define SD_BUS_ERROR_TIMEOUT                 "org.freedesktop.DBus.Error.Timeout"
#define SD_BUS_ERROR_NO_NETWORK              "org.freedesktop.DBus.Error.NoNetwork"
#define SD_BUS_ERROR_ADDRESS_IN_USE          "org.freedesktop.DBus.Error.AddressInUse"
#define SD_BUS_ERROR_DISCONNECTED            "org.freedesktop.DBus.Error.Disconnected"
#define SD_BUS_ERROR_INVALID_ARGS            "org.freedesktop.DBus.Error.InvalidArgs"
#define SD_BUS_ERROR_FILE_NOT_FOUND          "org.freedesktop.DBus.Error.FileNotFound"
#define SD_BUS_ERROR_FILE_EXISTS             "org.freedesktop.DBus.Error.FileExists"
#define SD_BUS_ERROR_UNKNOWN_METHOD          "org.freedesktop.DBus.Error.UnknownMethod"
#define SD_BUS_ERROR_UNKNOWN_OBJECT          "org.freedesktop.DBus.Error.UnknownObject"
#define SD_BUS_ERROR_UNKNOWN_INTERFACE       "org.freedesktop.DBus.Error.UnknownInterface"
#define SD_BUS_ERROR_UNKNOWN_PROPERTY        "org.freedesktop.DBus.Error.UnknownProperty"
#define SD_BUS_ERROR_PROPERTY_READ_ONLY      "org.freedesktop.DBus.Error.PropertyReadOnly"
#define SD_BUS_ERROR_UNIX_PROCESS_ID_UNKNOWN "org.freedesktop.DBus.Error.UnixProcessIdUnknown"
#define SD_BUS_ERROR_INVALID_SIGNATURE       "org.freedesktop.DBus.Error.InvalidSignature"
#define SD_BUS_ERROR_INCONSISTENT_MESSAGE    "org.freedesktop.DBus.Error.InconsistentMessage"
#define SD_BUS_ERROR_TIMED_OUT               "org.freedesktop.DBus.Error.TimedOut"
#define SD_BUS_ERROR_MATCH_RULE_NOT_FOUND    "org.freedesktop.DBus.Error.MatchRuleNotFound"
#define SD_BUS_ERROR_MATCH_RULE_INVALID      "org.freedesktop.DBus.Error.MatchRuleInvalid"
#define SD_BUS_ERROR_INTERACTIVE_AUTHORIZATION_REQUIRED \
                                             "org.freedesktop.DBus.Error.InteractiveAuthorizationRequired"
#define SD_BUS_ERROR_INVALID_FILE_CONTENT    "org.freedesktop.DBus.Error.InvalidFileContent"
#define SD_BUS_ERROR_SELINUX_SECURITY_CONTEXT_UNKNOWN \
                                             "org.freedesktop.DBus.Error.SELinuxSecurityContextUnknown"
#define SD_BUS_ERROR_OBJECT_PATH_IN_USE      "org.freedesktop.DBus.Error.ObjectPathInUse"
      </funcsynopsisinfo>
    </funcsynopsis>
  </refsynopsisdiv>

  <refsect1>
    <title>Description</title>

    <para>In addition to the error names user programs define, D-Bus
    knows a number of generic, standardized error names that are
    listed below.</para>

    <para>In addition to this list, in sd-bus, the special error
    namespace <literal>System.Error.</literal> is used to map
    arbitrary Linux system errors (as defined by <citerefentry
    project='man-pages'><refentrytitle>errno</refentrytitle><manvolnum>3</manvolnum></citerefentry>)
    to D-Bus errors and back. For example, the error
    <constant>EUCLEAN</constant> is mapped to
    <literal>System.Error.EUCLEAN</literal> and back.</para>

    <variablelist>

      <varlistentry>
         <term><constant>SD_BUS_ERROR_FAILED</constant></term>
         <listitem><para>A generic error indication. See the error
         message for further details. This error name should be
         avoided, in favor of a more expressive error
         name.</para></listitem>
      </varlistentry>

      <varlistentry>
        <term><constant>SD_BUS_ERROR_NO_MEMORY</constant></term>
        <listitem><para>A memory allocation failed, and the requested
        operation could not be completed.</para></listitem>
      </varlistentry>

      <varlistentry>
        <term><constant>SD_BUS_ERROR_SERVICE_UNKNOWN</constant></term>
        <listitem><para>The contacted bus service is unknown and
        cannot be activated.</para></listitem>
      </varlistentry>

      <varlistentry>
        <term><constant>SD_BUS_ERROR_NAME_HAS_NO_OWNER</constant></term>
        <listitem><para>The specified bus service name currently has
        no owner.</para></listitem>
      </varlistentry>
      <varlistentry>
        <term><constant>SD_BUS_ERROR_NO_REPLY</constant></term>
        <listitem><para>A message did not receive a reply. This error
        is usually generated after a timeout.</para></listitem>
      </varlistentry>
      <varlistentry>
        <term><constant>SD_BUS_ERROR_IO_ERROR</constant></term>
        <listitem><para>Generic input/output error, for example when
        accessing a socket or other I/O context.</para></listitem>
      </varlistentry>
      <varlistentry>
        <term><constant>SD_BUS_ERROR_BAD_ADDRESS</constant></term>
        <listitem><para>The specified D-Bus bus address string is
        malformed.</para></listitem>
      </varlistentry>
      <varlistentry>
        <term><constant>SD_BUS_ERROR_NOT_SUPPORTED</constant></term>
        <listitem><para>The requested operation is not supported on
        the local system.</para></listitem>
      </varlistentry>
      <varlistentry>
        <term><constant>SD_BUS_ERROR_LIMITS_EXCEEDED</constant></term>
        <listitem><para>Some limited resource has been
        exhausted.</para></listitem>
      </varlistentry>
      <varlistentry>
        <term><constant>SD_BUS_ERROR_ACCESS_DENIED</constant></term>
        <listitem><para>Access to a resource has been denied due to security restrictions.</para></listitem>
      </varlistentry>
      <varlistentry>
        <term><constant>SD_BUS_ERROR_AUTH_FAILED</constant></term>
        <listitem><para>Authentication did not complete successfully.</para></listitem>
      </varlistentry>
      <varlistentry>
        <term><constant>SD_BUS_ERROR_NO_SERVER</constant></term>
        <listitem><para>Unable to connect to the specified server.</para></listitem>
      </varlistentry>
      <varlistentry>
        <term><constant>SD_BUS_ERROR_TIMEOUT</constant></term>
        <listitem><para>An operation timed out. Note that method calls
        which timeout generate a
        <constant>SD_BUS_ERROR_NO_REPLY</constant>.</para></listitem>
      </varlistentry>
      <varlistentry>
        <term><constant>SD_BUS_ERROR_NO_NETWORK</constant></term>
        <listitem><para>No network available to execute requested network operation on.</para></listitem>
      </varlistentry>
      <varlistentry>
        <term><constant>SD_BUS_ERROR_ADDRESS_IN_USE</constant></term>
        <listitem><para>The specified network address is already being listened on.</para></listitem>
      </varlistentry>
      <varlistentry>
        <term><constant>SD_BUS_ERROR_DISCONNECTED</constant></term>
        <listitem><para>The connection has been terminated.</para></listitem>
      </varlistentry>
      <varlistentry>
        <term><constant>SD_BUS_ERROR_INVALID_ARGS</constant></term>
        <listitem><para>One or more invalid arguments have been passed.</para></listitem>
      </varlistentry>
      <varlistentry>
        <term><constant>SD_BUS_ERROR_FILE_NOT_FOUND</constant></term>
        <listitem><para>The requested file could not be found.</para></listitem>
      </varlistentry>
      <varlistentry>
        <term><constant>SD_BUS_ERROR_FILE_EXISTS</constant></term>
        <listitem><para>The requested file already exists.</para></listitem>
      </varlistentry>
      <varlistentry>
        <term><constant>SD_BUS_ERROR_UNKNOWN_METHOD</constant></term>
        <listitem><para>The requested method does not exist in the selected interface.</para></listitem>
      </varlistentry>
      <varlistentry>
        <term><constant>SD_BUS_ERROR_UNKNOWN_OBJECT</constant></term>
        <listitem><para>The requested object does not exist in the selected service.</para></listitem>
      </varlistentry>
      <varlistentry>
        <term><constant>SD_BUS_ERROR_UNKNOWN_INTERFACE</constant></term>
        <listitem><para>The requested interface does not exist on the selected object.</para></listitem>
      </varlistentry>
      <varlistentry>
        <term><constant>SD_BUS_ERROR_UNKNOWN_PROPERTY</constant></term>
        <listitem><para>The requested property does not exist in the selected interface.</para></listitem>
      </varlistentry>
      <varlistentry>
        <term><constant>SD_BUS_ERROR_PROPERTY_READ_ONLY</constant></term>
        <listitem><para>A write operation was requested on a read-only property.</para></listitem>
      </varlistentry>
      <varlistentry>
        <term><constant>SD_BUS_ERROR_UNIX_PROCESS_ID_UNKNOWN</constant></term>
        <listitem><para>The requested PID is not known.</para></listitem>
      </varlistentry>
      <varlistentry>
        <term><constant>SD_BUS_ERROR_INVALID_SIGNATURE</constant></term>
        <listitem><para>The specified message signature is not
        valid.</para>
        </listitem>
      </varlistentry>
      <varlistentry>
        <term><constant>SD_BUS_ERROR_INCONSISTENT_MESSAGE</constant></term>
        <listitem><para>The passed message does not validate
        correctly.</para></listitem>
      </varlistentry>
      <varlistentry>
        <term><constant>SD_BUS_ERROR_MATCH_RULE_NOT_FOUND</constant></term>
        <listitem><para>The specified match rule does not exist.</para></listitem>
      </varlistentry>
      <varlistentry>
        <term><constant>SD_BUS_ERROR_MATCH_RULE_INVALID</constant></term>
        <listitem><para>The specified match rule is invalid.</para></listitem>
      </varlistentry>
      <varlistentry>
        <term><constant>SD_BUS_ERROR_INTERACTIVE_AUTHORIZATION_REQUIRED</constant></term>
        <listitem><para>Access to the requested operation is not
        permitted. However, it might be available after interactive
        authentication. This is usually returned by method calls
        supporting a framework for additional interactive
        authorization, when interactive authorization was not enabled
        with the
        <citerefentry><refentrytitle>sd_bus_message_set_allow_interactive_authorization</refentrytitle><manvolnum>3</manvolnum></citerefentry>
        for the method call message.</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_error</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
      <citerefentry><refentrytitle>sd_bus_message_set_allow_interactive_authorization</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
      <citerefentry project='man-pages'><refentrytitle>errno</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
      <citerefentry project='man-pages'><refentrytitle>strerror_r</refentrytitle><manvolnum>3</manvolnum></citerefentry>
    </para>
  </refsect1>

</refentry>