Arguments

 

devnam

   OpenVMS usage:char_string
   type:         character string
   access:       read only
   mechanism:    by descriptor
   Name of the device on which the volume is physically mounted. The
   descriptor must point to the device name, a character string of 1
   to 64 characters. The device name can be a physical device name
   or a logical name; if it is a logical name, it must translate to
   a physical name.

   The device does not have to be currently allocated; however,
   allocating the device before initializing it is recommended.
 

volnam

   OpenVMS usage:char_string
   type:         character string
   access:       read only
   mechanism:    by descriptor
   Identification to be encoded on the volume. The descriptor
   must point to the volume name, a character string of 1 to 12
   characters. For a disk volume name, you can specify a maximum
   of 12 ANSI characters; for a magnetic tape volume name, you can
   specify a maximum of 6 ANSI "a" characters.

   Any valid ANSI "a" characters can be used; these include numbers,
   uppercase letters, and any one of the following nonalphanumeric
   characters:

   ! " % ' ( ) * + , - . / : ; < = >

   VSI strongly recommends that a disk volume name consist of only
   alphanumeric characters, dollar signs ($),  underscores (_), and
   hyphens (-).
 

itmlst

   OpenVMS usage:item_list_3
   type:         longword (unsigned)
   access:       read only
   mechanism:    by reference
   Item list specifying options that can be used when initializing
   the volume. The itmlst argument is the address of a list of item
   descriptors, each of which describes one option. The list of item
   descriptors is terminated by a longword of 0.

   To view the item code diagram and descriptor fields table, see
   the VSI OpenVMS System Services Reference Manual.