HP OpenVMS Systems

RMS and XQP File Attributes?

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The Question is:

 
Can't find a program callable equivalent to F$FILE_ATTRIBUTES() for Fortran or C.
I need to get the creation date for a file.  Is there a system service or rtl
 function which I can use?
 
Thank you for your help.
 

The Answer is :

 
  Please see the I/O User's Reference Manual for the I/O ACP interface
  (IO-ACPCONTROL) or see the RMS services programming interface.
 
  A Fortran example follows:
 
!    The subroutine get_create_date_siz gets the RMS CDT, RDT, ALQ and EBK
!    fields. You can consult SYS$LIBRARY:FORSYSDEF.TLB entry $XABDATDEF and
!    $XABFHCDEF to find the field names of other fields, if you should ever
!    need them.
 
        program rms_test
 
! test program for get_create_date_siz
 
	IMPLICIT NONE
        character*80 filename
        integer*2 leng
        integer*4 cdat(2),rdat(2),status,get_create_date_size
	integer*4 alq,siz
        character*23 scdat,srdat
        print '('' Enter filename: '',$)'
        accept 10,filename
10      FORMAT(A80)
 
        status=get_create_date_size(filename,cdat,rdat,alq,siz)
        if(status) then
          call sys$asctim (,scdat,cdat,)
          call sys$asctim (,srdat,rdat,)
          print *,filename
	  print *,'	created ',scdat
	  print *,'	revised ',srdat
	  print *,'	',siz,'/',alq,'	blocks'
        else
          print *,'Error status='
          filename=' '
          call sys$getmsg (%val(status),leng,filename,,)
          print *,filename(1:leng)
        endif
        end
 
        options /extend_source
        integer function get_create_date_size(filename,cdat,rdat,alq,siz)
        implicit none
        character*(*) filename
        integer*4 cdat(2),rdat(2),alq,siz
 
        include '($FABDEF)'	! RMS definitions from FORSYSDEF.TLB
	include '($XABDEF)'
        include '($XABDATDEF)'
	include '($XABFHCDEF)'
 
        integer status,sys$open,sys$close	! RMS routines
 
        record/fabdef/fab
 
!  the following structure defines an XAB by overlaying the XABDEF, XABDATDEF
!  and XABFHCDEF structures. This allows access to the XABDAT and XABFHC fields
!  as well as the common XAB fields which are defined only in XABDEF.
 
	STRUCTURE /fullxab/
	   UNION
	     MAP
		record/xabdef/xab
	     END MAP
	     MAP
        	record/xabdatdef/xabdat
	     END MAP
	     MAP
		record/xabfhcdef/xabfhc
	     END MAP
	   END UNION
	END STRUCTURE
 
	RECORD /fullxab/datxab,fhcxab		! allocate 2 XABs
 
        call lib$movc5(0,0,0,fab$c_bln,fab)	! Clear FAB
        fab.fab$b_bln=fab$c_bln			! set FAB options (see RMS
        fab.fab$b_bid=fab$c_bid                 !   manual for details)
        fab.fab$b_fac=fab$m_get
        fab.fab$b_shr=fab$m_shrdel+fab$m_shrget+fab$m_shrput+fab$m_shrUPD
        fab.fab$l_fop=fab$m_SQO
 
        fab.fab$l_fna=%loc(filename)		! set file name to open
        fab.fab$b_fns=len(filename)             ! and length of name
 
        fab.fab$l_XAB = %loc(datxab)		! chain to XABDAT
 
        call lib$movc5(0,0,0,XAB$C_DATLEN,datxab)	! Clear XAB as XABDAT
	datxab.xab.xab$b_bln=XAB$C_DATLEN               ! set length
	datxab.xab.xab$b_cod=XAB$C_DAT			! fill as XABDAT
	datxab.xab.xab$l_nxt=%LOC(fhcxab)		! chain to XABFHC
 
	call lib$movc5(0,0,0,XAB$C_FHCLEN,fhcxab)	! Clear XAB as XABFHC
	fhcxab.xab.xab$b_bln=XAB$C_FHCLEN		! set length
	fhcxab.xab.xab$b_cod=XAB$C_FHC			! fill as XABFHC
 
        status=sys$open(fab)
 
        if(status) then
          CALL lib$movc3(8,datxab.xab.xab$q_rdt,rdat)	! get revision date
          CALL lib$movc3(8,datxab.xabdat.xab$q_cdt,cdat)! get creation date
	  alq=fab.fab$l_alq		! get allocated size
	  siz=fhcxab.xabfhc.xab$l_ebk	! get used size (=EOF block)
          status=sys$close(fab)		! close file
        endif
 
        get_create_date_size=status	! return RMS status
        return
        end
 
 

  

     

     
answer written or last revised on ( 6-FEB-2003 )
     
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