/* include file for info structure used with record_status control order
   created by M. Asherman 1/6/76 */
/* modified 6/15/77 to support stationary type records */

     dcl	   rs_info_ptr	      ptr;
     dcl	   1 rs_info	      based (rs_info_ptr) aligned,
	     2 version	      fixed,		/* must be set to 1 or 2 (Input) */
	     2 flags	      aligned,
	       3 lock_sw	      bit (1) unal,		/* Input -- if ="1"b  try to lock record */
	       3 unlock_sw	      bit (1) unal,		/* Input -- if ="1"b try to unlock record */
	       3 create_sw	      bit (1) unal,		/* Input--if set creat new record */
	       3 locate_sw	      bit (1) unal,		/* Input--if set causes current rec to be
						   located outside the index by descrip, or created without key */
	       3 inc_ref_count    bit (1) unal,		/* Input--bump reference count of record, if stationary */
	       3 dec_ref_count    bit (1) unal,		/* Input--decrement ref count if this flag set and record stationary */
	       3 locate_pos_sw    bit (1) unal,		/* Input--if set the record_length is taken
						   as an input argument specifying the absolute logical record positioni	  to which both the current and next positions will be set */
	       3 mbz1	      bit (29) unal,	/* must be set to "0"b, reserved for future use */
	     2 record_length      fixed (21),		/* length in bytes, Input if create_sw set */
	     2 max_rec_len	      fixed (21),		/* max length of contained record
						   Input if create_sw is set--overrides min_block_size in effect */
	     2 record_ptr	      ptr,		/* points to first byte of record--will be word aligned */
	     2 descriptor	      fixed (35),		/* Input if locate_sw set and create_sw="0"b */
	     2 ref_count	      fixed (34),		/* Output--should match number of keys on this record-- = -1 if non-stationary record */
	     2 time_last_modified fixed (71),		/* Output */
	     2 modifier	      fixed (35),		/* Output--also Input when locking */
	     2 block_ptr	      ptr unal,		/* Output */
	     2 last_image_modifier
			      fixed (35),
	     2 mbz2	      fixed;

     dcl	   1 rs_desc	      based (addr (rs_info.descriptor)),
						/* record block descriptor structure */
	     2 comp_num	      fixed (17) unal,	/* msf component number */
	     2 offset	      bit (18) unal;	/* word offset of record block */

     dcl	   1 seq_desc	      based (addr (rs_info.descriptor)),
						/* for sequential files */
	     2 bitno	      bit (6) unal,
	     2 comp_num	      fixed (11) unal,	/* msf component number */
	     2 wordno	      bit (18) unal;	/* word offset */

     dcl	   rs_info_version_1      static internal fixed init (1);
     dcl	   rs_info_version_2      static internal fixed init (2);



*/
                                          -----------------------------------------------------------


Historical Background

This edition of the Multics software materials and documentation is provided and donated
to Massachusetts Institute of Technology by Group Bull including Bull HN Information Systems Inc. 
as a contribution to computer science knowledge.  
This donation is made also to give evidence of the common contributions of Massachusetts Institute of Technology,
Bell Laboratories, General Electric, Honeywell Information Systems Inc., Honeywell Bull Inc., Groupe Bull
and Bull HN Information Systems Inc. to the development of this operating system. 
Multics development was initiated by Massachusetts Institute of Technology Project MAC (1963-1970),
renamed the MIT Laboratory for Computer Science and Artificial Intelligence in the mid 1970s, under the leadership
of Professor Fernando Jose Corbato. Users consider that Multics provided the best software architecture for 
managing computer hardware properly and for executing programs. Many subsequent operating systems 
incorporated Multics principles.
Multics was distributed in 1975 to 2000 by Group Bull in Europe , and in the U.S. by Bull HN Information Systems Inc., 
as successor in interest by change in name only to Honeywell Bull Inc. and Honeywell Information Systems Inc. .

                                          -----------------------------------------------------------

Permission to use, copy, modify, and distribute these programs and their documentation for any purpose and without
fee is hereby granted,provided that the below copyright notice and historical background appear in all copies
and that both the copyright notice and historical background and this permission notice appear in supporting
documentation, and that the names of MIT, HIS, Bull or Bull HN not be used in advertising or publicity pertaining
to distribution of the programs without specific prior written permission.
    Copyright 1972 by Massachusetts Institute of Technology and Honeywell Information Systems Inc.
    Copyright 2006 by Bull HN Information Systems Inc.
    Copyright 2006 by Bull SAS
    All Rights Reserved

*/