The file state:
running data is being written to the file
ready the file is ready to be read
emptied an ephemeral file was successfully consumed
noSpace no data due to insufficient file space
badName no data due to a name or path problem
writeErr no data due to fatal file write error
noMem no data due to insufficient dynamic memory
buffErr implementation buffer too small
aborted short terminated by operator command
Only the 'ready' state implies that the file is available
for transfer.
The disposition of files after an error is implementation
and file-syste specific.