[PATCH 3/3] docs: message bus messages - describe generic error codes

[Tom Gundersen]

Describe the error codes given for invalid interface/method/signature.

Signed-off-by: Tom Gundersen <teg at jklm.no>
---
 doc/dbus-specification.xml | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/doc/dbus-specification.xml b/doc/dbus-specification.xml
index 11530d10..a3ec0f70 100644
--- a/doc/dbus-specification.xml
+++ b/doc/dbus-specification.xml
@@ -5218,7 +5218,15 @@
       <title>Message Bus Messages</title>
       <para>
         The special message bus name <literal>org.freedesktop.DBus</literal>
-        responds to a number of additional messages.
+        responds to a number of additional messages. The message bus may return a
+        number of different error messages on failure, in particular,
+        <literal>org.freedesktop.DBus.Error.UnknownInterface</literal> if the
+        given interface is not known,
+        <literal>org.freedesktop.DBus.Error.UnknownMethod</literal> if the given
+        method is not known and
+        <literal>org.freedesktop.DBus.Error.InvalidArgs</literal> if the signature
+        is not as expected for the method. Individual methods may return further
+        error codes as indicated below.
       </para>
 
       <sect3 id="bus-messages-hello">
-- 
2.12.2