Document a way for a default export

NetworkBlockDevice · Oct 8, 2014 · 8ea2c38 · 8ea2c38
1 parent 0704c73
commit 8ea2c38
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/doc/proto.txt b/doc/proto.txt
@@ -244,6 +244,9 @@ Option types
   haggling. Data: name of the export, free-form UTF8 text (subject to
   limitations by server implementation). If the chosen export does not
   exist, the server closes the connection.
+  A special, "empty", name (i.e., the length field is zero and no name
+  is specified), is reserved for a "default" export, to be used in cases
+  where explicitly specifying an export name makes no sense.
 
 * NBD_OPT_ABORT (2)
   Abort negotiation and close the connection. Optional.