Guardian Procedure Calls Reference Manual

ldevnum
output
INT(32) .EXT:ref:1
returns the logical device number of the line handler to the specified node. If the specified node
is the local node, ldevnum returns 32767. If error is nonzero, ldevnum is undefined.
Returned Value
INT
A file-system error code that indicates the outcome of the call.
Considerations
If the value specified for nodenumber does not designate a node that is known to the local system,
an error value of 18 is returned. In this case, the nodename parameter returns a printable string
such as "\255" showing the node number that was supplied as input (provided that the number
fits in seven characters).
NODENUMBER_TO_NODENAME_ Procedure 873