146 lines
4.4 KiB
PHP
146 lines
4.4 KiB
PHP
BREAK <Internal system file table format>
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;** SF.INC - System File Table
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;
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; AN000 version 4.00 Jan. 1988
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; AN003 PTM 3680 -- make NAME offset the same as before (<=3.30)
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; AN009 PTM 3839 reorder SFT for MS WINDOWS
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;** System File Table SuperStructure
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;
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; The system file table entries are allocated in contiguous groups.
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; There may be more than one such groups; the SF "superstructure"
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; tracks the groups.
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SF STRUC
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SFLink DD ?
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SFCount DW ? ; number of entries
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SFTable DW ? ; beginning of array of the following
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SF ENDS
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;** System file table entry
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;
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; These are the structures which are at SFTABLE in the SF structure.
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sf_entry STRUC
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sf_ref_count DW ? ; number of processes sharing entry
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; if FCB then ref count
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sf_mode DW ? ; mode of access or high bit on if FCB
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sf_attr DB ? ; attribute of file
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sf_flags DW ? ;Bits 8-15
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; Bit 15 = 1 if remote file
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; = 0 if local file or device
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; Bit 14 = 1 if date/time is not to be
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; set from clock at CLOSE. Set by
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; FILETIMES and FCB_CLOSE. Reset by
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; other reseters of the dirty bit
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; (WRITE)
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; Bit 13 = Pipe bit (reserved)
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;
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; Bits 0-7 (old FCB_devid bits)
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; If remote file or local file, bit
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; 6=0 if dirty Device ID number, bits
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; 0-5 if local file.
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; bit 7=0 for local file, bit 7
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; =1 for local I/O device
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; If local I/O device, bit 6=0 if EOF (input)
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; Bit 5=1 if Raw mode
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; Bit 0=1 if console input device
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; Bit 1=1 if console output device
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; Bit 2=1 if null device
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; Bit 3=1 if clock device
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sf_devptr DD ? ; Points to device header
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sf_time DW ? ; Time associated with file
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sf_date DW ? ; Date associated with file
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sf_size DD ? ; Size associated with file
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sf_position DD ? ; LRU count for FCBs
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; SHARING INFO
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sf_chain DD ? ; link to next SF
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sf_PID DW ?
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sf_NTHandle DD ? ; NT File Handle
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sf_entry ENDS
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sf_OpenAge EQU WORD PTR sf_position+2
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sf_LRU EQU WORD PTR sf_position
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sf_default_number EQU 5h
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;
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; Note that we need to mark an SFT as being busy for OPEN/CREATE. This is
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; because an INT 24 may prevent us from 'freeing' it. We mark this as such
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; by placing a -1 in the ref_count field.
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;
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sf_busy EQU -1
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; Flag word masks
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sf_isfcb EQU 1000000000000000B
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sf_isnet EQU 1000000000000000B
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sf_close_nodate EQU 0100000000000000B
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sf_pipe EQU 0010000000000000B
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sf_no_inherit EQU 0001000000000000B
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sf_net_spool EQU 0000100000000000B
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sf_scs_console EQU 0000010000000000B ; special for NT DOSEM
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sf_nt_seek EQU 0000001000000000B ; special for NT DOSEM
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sf_nt_pipe_in EQU 0000000100000000B ; for stdin redirection
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; true if seek is needed
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; with next read/write operation
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devid_file_clean EQU 40h ; true if file and not written
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devid_file_mask_drive EQU 3Fh ; mask for drive number
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devid_device EQU 80h ; true if a device
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devid_device_EOF EQU 40h ; true if end of file reached
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devid_device_raw EQU 20h ; true if in raw mode
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devid_device_special EQU 10h ; true if special device
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devid_device_clock EQU 08h ; true if clock device
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devid_device_null EQU 04h ; true if null device
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devid_device_con_out EQU 02h ; true if console output
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devid_device_con_in EQU 01h ; true if consle input
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;
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; structure of devid field as returned by IOCTL is:
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;
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; BIT 7 6 5 4 3 2 1 0
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; |---|---|---|---|---|---|---|---|
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; | I | E | R | S | I | I | I | I |
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; | S | O | A | P | S | S | S | S |
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; | D | F | W | E | C | N | C | C |
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; | E | | | C | L | U | O | I |
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; | V | | | L | K | L | T | N |
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; |---|---|---|---|---|---|---|---|
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; ISDEV = 1 if this channel is a device
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; = 0 if this channel is a disk file
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;
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; If ISDEV = 1
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;
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; EOF = 0 if End Of File on input
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; RAW = 1 if this device is in Raw mode
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; = 0 if this device is cooked
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; ISCLK = 1 if this device is the clock device
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; ISNUL = 1 if this device is the null device
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; ISCOT = 1 if this device is the console output
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; ISCIN = 1 if this device is the console input
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;
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; If ISDEV = 0
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; EOF = 0 if channel has been written
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; Bits 0-5 are the block device number for
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; the channel (0 = A, 1 = B, ...)
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;
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devid_ISDEV EQU 80h
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devid_EOF EQU 40h
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devid_RAW EQU 20h
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devid_SPECIAL EQU 10H
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devid_ISCLK EQU 08h
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devid_ISNUL EQU 04h
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devid_ISCOT EQU 02h
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devid_ISCIN EQU 01h
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devid_block_dev EQU 1Fh ; mask for block device number
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