On Alpha and Integrity server systems, allows a process to create
    a global disk file section and to map a section of its address
    space to the global section.

    This service accepts 64-bit addresses.

    Format

      SYS$CRMPSC_GFILE_64  gs_name_64 ,ident_64 ,file_offset_64

                           ,length_64 ,chan ,region_id_64

                           ,section_offset_64 ,acmode ,flags

                           ,return_va_64 ,return_length_64

                           [,fault_cluster

                           [,start_va_64 [,map_length_64]]]

    C Prototype

      int sys$crmpsc_gfile_64  (void *gs_nam_64, struct _secid

                               *ident_64, unsigned __int64

                               file_offset_64, unsigned __int64

                               length_64, unsigned short

                               int chan, struct _generic_64

                               *region_id_64, unsigned __int64

                               section_offset_64, unsigned int

                               acmode, unsigned int flags, void

                               *(*(return_va_64)), unsigned __int64

                               *return_length_64,...);