Arguments

 

devnam

   OpenVMS usage:device_name
   type:         character-coded text string
   access:       read only
   mechanism:    by descriptor-fixed-length string descriptor
   Device name of the device to be dismounted. The devnam argument
   is the address of a character string descriptor pointing to
   the device name string. The string can be either a physical
   device name or a logical name. If it is a logical name, it must
   translate to a physical device name.
 

flags

   OpenVMS usage:mask_longword
   type:         longword (unsigned)
   access:       read only
   mechanism:    by value
   A longword bit vector specifying options for the dismount
   operation. The flags argument is a longword bit vector wherein
   a bit, when set, selects the corresponding option. Each bit has a
   symbolic name; these names are defined by the $DMTDEF macro.

   The flags and their meanings are listed in the following table:

   Flag                Meaning

   DMT$M_ABORT         The volume is to be dismounted even if
                       the caller did not mount the volume. If
                       the volume was mounted with MNT$M_SHARE
                       specified, $DISMOU dismounts the volume for
                       all of the users who mounted it.

                       To specify DMT$M_ABORT, the caller must: (1)
                       have GRPNAM privilege for a group volume,
                       (2)  have SYSNAM privilege for a system
                       volume, or (3)  either own the volume or have
                       VOLPRO privilege.

   DMT$M_CLUSTER       The volume is to be dismounted clusterwide,
                       that is, from all nodes in the OpenVMS
                       Cluster system. $DISMOU dismounts the volume
                       from the caller's node first and then from
                       every other node in the existing cluster.

                       DMT$M_CLUSTER dismounts only system or
                       group volumes. To dismount a group volume
                       clusterwide, the caller must have GRPNAM
                       privilege. To dismount a system volume
                       clusterwide, the caller must have SYSNAM
                       privilege.

                       DMT$M_CLUSTER has no effect if the system
                       is not a member of a cluster. DMT$M_CLUSTER
                       applies only to disks.

   DMT$M_FORCE         If connectivity to a device has been lost and
                       the shadow set is in mount verification, this
                       flag causes a named shadow set member to be
                       immediately expelled from the shadow set.

   DMT$M_MINICOPY_     $DISMOU takes place, regardless of whether
   OPTIONAL            minicopy is enabled on the disk.

   DMT$M_MINICOPY_     $DISMOU fails if minicopy has not been
   REQUIRED            enabled on the disk.

   DMT$M_NOUNLOAD      Specifies that the volume is not to be
                       physically unloaded after the dismount. If
                       both the DMT$M_UNLOAD and DMT$M_NOUNLOAD
                       flags are specified, the DMT$M_NOUNLOAD flag
                       is ignored. If neither flag is specified,
                       the volume is physically unloaded, unless
                       the DMT$M_NOUNLOAD flag was specified on
                       the $MOUNT system service or the /NOUNLOAD
                       qualifier was specified on the MOUNT command
                       when the volume was mounted.

   DMT$M_OVR_CHECKS    Specifies that the volume should be
                       dismounted without checking for open files,
                       spooled devices, installed images, or
                       installed swap and page files.

   DMT$M_UNIT          The specified device, rather than the entire
                       volume set, is dismounted.

   DMT$M_UNLOAD        Specifies that the volume is to be physically
                       unloaded after the dismount. If both the
                       DMT$M_UNLOAD and DMT$M_NOUNLOAD flags
                       are specified, the DMT$M_NOUNLOAD flag
                       is ignored. If neither flag is specified,
                       the volume is physically unloaded, unless
                       the DMT$M_NOUNLOAD flag was specified on
                       the $MOUNT system service or the /NOUNLOAD
                       qualifier was specified on the MOUNT command
                       when the volume was mounted.