wmt(7)                     DG/UX 4.30                      wmt(7)



     NAME
          wmt - pseudo WORM (Write Once Read Multiple optical device)
          as magnetic tape device interface

     DESCRIPTION
          This character special device provides indirect access to
          files on a WORM.  The interface conforms to the semantics
          followed by character special tape (rmt).  Use the open(2)
          system call to open any of the /dev/wmt/* special files and
          perform I/O on them as if they were tape devices.

          The wmt daemon wmtd(1M) provides the mapping between pseudo
          tape device and the physical WORM device.  Arguments passed
          to the wmt daemon on startup define the mapping.

          To create the wmt special files, the device driver entry
          wmt() must be listed in the system(4) file before
          configuring the system.  Configuration variables exist in
          the master(4) file dgux and in the system(4) file to control
          the number of wmt special files created.

          The wmtd(1M) server must be running for any of the wmt
          special files to be successfully opened.

     FILES
          /dev/wmt/*        Tape device names for character special access.
          /etc/master.d/dgux   Main DG/UX master file.

     SEE ALSO
          config(1M), wmtd(1M), ioctl(2), open(2), master(4),
          system(4), rmt(7).
























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