OSI/FTAM Programming Guide

Glossary
HP NonStop OSI/FTAM Programming Guide—528612-001
Glossary-9
file-access functional unit.
file-access functional unit. A functional unit that provides for access to an individual FADU
in the file-access structure and allows the FADU to be manipulated within the file-
access structure.
file-access service class. The service class that allows access to remote files, and
includes data manipulation and file management capabilities.
file-attribute group. See attribute group.
file attributes. Information about a file such as file name, storage account, and date and
time of (file) creation. File attributes are present from one file access to another,
although the actual values of a file attribute might change. See also activity attributes.
file-availability attribute. An attribute that indicates whether a file is available for immediate
or deferred access. For example, a file on a nondemountable device might be
classified as having immediate availability, whereas a file on a demountable device
might be classified as having deferred availability, because a significant delay could be
encountered in accessing the file on the demountable device. The attribute value is set
when a file is created.
file-management service class. A service class that permits control of the virtual filestore
through a series of independent confirmed service exchanges, but does not include
file-transfer mechanisms. The file-management service class permits the ability to read
and change file attributes, and create and delete files.
file number. A unique number generated by the NonStop operating system to be used in
file-system calls. The number is assigned to a file when an application accesses that
file, and it is discarded when the application is finished with the file. You can display a
file number by issuing the SCF LISTOPENS command to the appropriate object.
file-open regime. The regime entered when you successfully open an FTAM file. In this
regime, you can locate a part of the file to be worked on, erase the file, or request
access to read or write information in the file. You can also close the file, and you can
abort the association. See also data-transfer regime., file-selection regime., and FTAM
regime.
file protocol machine. The protocol state machine for FTAM. See protocol state machine.
file-selection regime. The regime entered after you successfully select or create an FTAM
file. In this regime you can read file attributes, change the attributes, or open the file.
You can also deselect the file or delete the file, and you can abort the association. See
also data-transfer regime., file-open regime., and FTAM regime.
filestore-password parameter. The password used by an FTAM responder to authenticate
the initiator identity. For NonStop FTAM applications, if this parameter is not supplied
by the application, no password is sent to the remote responder.