ieee1284_claim — claim access to the port
With the exception of ieee1284_get_deviceid(3),
ieee1284_claim must be
called on an open port before any other libieee1284
function for accessing a device on it.
Success. Note that, unless the
F1284_EXCL flag was specified to
start with, the port should be released within a
“reasonable” amount of time.
There is not enough memory.
port parameter is
invalid (for instance, it might not have been opened
There was a problem at the operating system
level. The global variable
has been set appropriately.