Arguments

 

inadr

   OpenVMS usage:address_range
   type:         longword (unsigned)
   access:       read only
   mechanism:    by reference
   Starting and ending virtual addresses of the pages to be
   unlocked. The inadr argument is the address of a 2-longword array
   containing, in order, the starting and ending process virtual
   addresses.

   Only the virtual page number portion of each virtual address is
   used; the low-order byte-within-page bits are ignored. If the
   starting and ending virtual addresses are the same, a single page
   is unlocked.

   If more than one page is being unlocked and you need to determine
   specifically which pages had been previously unlocked, you should
   unlock the pages one at a time, that is, one page per call
   to $ULKPAG. The condition value returned by $ULKPAG indicates
   whether the page was previously unlocked.
 

retadr

   OpenVMS usage:address_range
   type:         longword (unsigned)
   access:       write only
   mechanism:    by reference-array reference or descriptor
   Starting and ending process virtual addresses of the pages
   actually unlocked by $ULKPAG. The retadr argument is the address
   of a 2-longword array containing, in order, the starting and
   ending process virtual addresses.

   If an error occurs while multiple pages are being unlocked,
   retadr specifies those pages that were successfully unlocked
   before the error occurred. If no pages were successfully
   unlocked, both longwords in the retadr array contain the value
   -1.
 

acmode

   OpenVMS usage:access_mode
   type:         longword (unsigned)
   access:       read only
   mechanism:    by value
   Access mode on behalf of which the request is being made. The
   acmode argument is a longword containing the access mode. The
   $PSLDEF macro defines the symbols for the four access modes.

   The most privileged access mode used is the access mode of the
   caller. To unlock any specified page, the resultant access mode
   must be equal to or more privileged than the access mode of the
   owner of that page.