/* BEGIN INCLUDE FILE gtss_dfd_ext_.incl.pl1 */ /* Created: (Wardd Multics) 06/09/78 1650.6 mst Fri */ dcl 1 gtss_dfd_ext_$disk_file_data (41) aligned ext, /* disk_file_data structure */ 3 gtss_disk, 4 dir_name char (168) unal, /* containing directory for file */ 4 entry_name char (32) unal, /* entry name for file */ 4 fcb_ptr ptr aligned, /* ptr to file control block */ 4 msf_array_ptr ptr, /* Pointer to an array of pointers for a msf. Each component which has been accessed has a corresponding initialized pointer. Currently 500 components are supported. */ 4 single_segment_ptr ptr, /* Pointer to segment for single segment file */ 4 indicators aligned, /* one word of flags */ 5 msf bit (1) unaligned, /* 1=msf segment | 0= single segment */ 5 protected_file bit (1) unaligned, /* 1=file uses protections | 0= unprotected */ 5 fill bit (34) unal, 4 permissions aligned, 5 read bit (1) unaligned, /* 1=read permission */ 5 execute bit (1) unaligned, /* 1=execute permission */ 5 write bit (1) unaligned, /* 1=write permission */ 5 fill2 bit (33) unaligned, /* unused at this time */ 4 access_mode bit (6) aligned, /* contains the mode by which the file was accessed */ 4 component fixed bin, /* current component value (first component = 0) */ 4 offset fixed bin (24), /* current word offset in the component */ 4 file_position fixed bin (30), /* current file position in words */ 4 file_size fixed bin (30), /* size of file in words */ 4 no_components fixed bin (24), /* number of components for a msf */ 4 attributes_ptr ptr, /* Pointer to the attributes structure for this file. (See gtss_file_attributes.incl.pl1) */ 4 pat_body, 5 word_0, 6 defective bit (1) unal, /* 1 = file has defective space */ 6 io_errors bit (1) unal, /* 1 = I/O errors encountered on file */ 6 reserved bit (2) unal, /* Reserved for GCOS */ 6 sct bit (12) unal, /* address of SCT for device on which file begins or if cataloged, for device with file catalog entry */ 6 reserved2 bit (2) unal, /* Reserved for GCOS */ 5 word_1, 6 io_time fixed bin (35), /* I/O time for this file */ 5 word_2, 6 protected bit (1) unal, /* 1 = file has protected allocation */ 6 hash_code bit (5) unal, /* hash code of user name under which file is cataloged */ 6 not_cat bit (1) unal, /* 1 = file is not cataloged */ 6 last_desc bit (1) unal, /* 1 = last descriptor for file is not in memory */ 6 random bit (1) unal, /* 1 = access to file is random */ 6 perm bit (1) unal, /* 1 = file space is permanently assigned */ 6 first_desc bit (1) unal, /* 1 = first descriptor for file is not in memory */ 6 creator bit (1) unal, /* 1 = user is not creator of file */ 6 disposition bit (2) unal, /* Abort disposition code 00 = Release 01 = Dismount 10 = Save 11 = Continue */ 6 ids1 bit (1) unal, /* 1 = file is an I-D-S/I file */ 6 write_performed bit (1) unal, /* 1 = write was performed on file */ 6 unpermitted_access bit (1) unal, /* 1 = unpermitted access to file attempted or seek attempted to part of file marked defective (only for procted allocation) */ 6 purge bit (1) unal, /* 1 = file space to be purgedbefore deallocating file. */ 6 sector_number bit (18) unal, /* If cataloged file, sector number of file catalog (on device with SCT referenced in word 0). If cataloged file that is proctected (bit 0 ON in this word), memory location of table in File Management Supervisor Executive. If user temporary file, largest size file has ever attained, in llinks. If system value equals 777777 octal, it is system file created by System Input. */ 5 word_3, 6 llink_size bit (14) unal, /* 0-13 ^= 0, Current total file size in llinks 0-13 = 0, File size is greater than 16,383 llinks, and if the file is cataloged, call to .MFS19,5 with offset to PAT pointer in index 5 will cause bits 14-35 of Q-register to be set to file size. (Unless there is a Seek error on file catalog in which case zero is returned. ) */ 6 llink_position bit (22) unal, /* Relative llink position within the space descriptors in memory. */ 5 word_4, 6 not_last_desc bit (1) unal, /* 1 = not last descriptor in memory */ 6 space_desc bit (1) unal, /* 0 = this is space descriptor */ 6 space_defective bit (1) unal, /* 1 = Space is defective */ 6 extent bit (15) unal, /* Number of llinks in this extent (area defined by this descriptor) */ 6 origin bit (18) unal; /* device llinks number of origin of this extent */ /* END INCLUDE FILE gtss_dfd_ext_.incl.pl1 */ */ ----------------------------------------------------------- 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 */