150 lines
4.5 KiB
PHP
150 lines
4.5 KiB
PHP
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; EXPORT DATE: 9/11
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;Equates for FASTOPEN.
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;FASTOPEN NAME CACHING Subfunctions
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FONC_Look_up equ 1
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FONC_insert equ 2
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FONC_delete equ 3
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FONC_update equ 4
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FONC_purge equ 5 ;reserved for the future use.
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FONC_Rename equ 6 ;AN001
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;FASTOPEN EXTENT CACHING Subfunctions
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FSK_Open equ 11 ;AN000;
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FSK_Close equ 12 ;AN000;
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FSK_Delete equ 13 ;AN000;
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FSK_Lookup equ 14 ;AN000;
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FSK_Insert equ 15 ;AN000;
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FSK_Trunc equ 16 ;AN000;
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HeaderSize equ 8 ; size of file header (8 bytes) ;AN000;
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ExtendSize equ 8 ; size of extend (8 bytes) ;AN000;
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Num_Of_Pages equ 1 ; number of pages ;AN000;
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Num_Of_Segs equ 2 ; number of frame segments ;AN000;
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Stayresident equ 04ch ; terminate and stay resident function code
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;Equates used in DOS.
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FastOpen_Set equ 00000001B
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FastOpen_Reset equ 11111110B
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Lookup_Success equ 00000010B
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Lookup_Reset equ 11111101B
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Special_Fill_Set equ 00000100B
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Special_Fill_Reset equ 11111011B
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No_Lookup equ 00001000B
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Set_For_Search equ 00010000B ;DCR 167
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;============= FastOpen Data Structures =====================
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Fastopen_Entry STRUC ;Fastopen Entry pointer in DOS
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Fastopen_Entry_size dw 4 ;size of the following
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Fastopen_Name_Caching dd ?
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;Fastopen_FatChain_Caching dd ? ;reserved for future use
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Fastopen_Entry ENDS
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;
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CMPCT_DIR_INFO STRUC ;compact version of Dir Info.
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CDI_file_name db 11 dup (' ')
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CDI_file_attr db ?
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CDI_codepage dw ?
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CDI_extcluster dw ?
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CDI_attr2 db ?
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CDI_time dw ?
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CDI_date dw ?
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CDI_cluster dw ?
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CDI_filesize dd ?
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CMPCT_DIR_INFO ENDS
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;
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ORIG_DIR_INFO STRUC
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ODI_head db 17 dup (?)
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ODI_skip db 5 dup (0) ;reserved for DOS. FASTOPEN does not
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ODI_tail db 10 dup (?) ; use ODI_skip part.
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ORIG_DIR_INFO ENDS
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;
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ODI_head_leng equ 17
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ODI_skip_leng equ 5
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ODI_tail_leng equ 10
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;
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FASTOPEN_EXTENDED_INFO STRUC
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FEI_dirpos db 0
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FEI_dirsec dd 0
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FEI_clusnum dw 0
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FEI_lastent dw 0 ; for search first
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FEI_dirstart dw 0 ; for search first
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FASTOPEN_EXTENDED_INFO ENDS
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;
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NAME_RECORD STRUC
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nLRU_ptr dw -1
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nMRU_ptr dw -1 ;reverse of nLRU_ptr
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nChild_ptr dw -1
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nSibling_ptr dw -1
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nBackward_ptr dw -1 ;points to preceding node
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nCmpct_Dir_Info db size Cmpct_Dir_Info dup (' ')
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nExtended_Info db size Fastopen_Extended_Info dup (?)
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NAME_RECORD ENDS
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;
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DRIVE_CACHE_HEADER STRUC ;drive cache header
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DCH_LRU_ROOT dw 0 ;Header of the LRU chain of this drive
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DCH_MRU_ROOT dw 0 ;offset to the last entry of LRU chain
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DCH_Child_ptr dw -1 ;the first child in Name cache seg.
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DCH_Sibling_ptr dw -1 ;points to the next drive cache header
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DCH_Drive_letter db 'C' ;drive letter
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DCH_Num_Entries dw 0 ;Number of entries in the Name cache.
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DCH_Name_Buff dw 0 ;pointer to name cahe buffer
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DRIVE_CACHE_HEADER ENDS
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;
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;======== FAST SEEK FUNCTION DATA STRUCTURES =======================
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DRIVE_HEADER STRUC ; Drive header structure ;AN000;
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Drive_Number dw 0 ; drive number ;AN000;
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Extent_Count dw 0 ; reserved for debugging
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MRU_Hdr_Ptr dw 0 ; pointer to OPEN Queue
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Free_ptr dw 0 ; pointer to FREE buffer ;AN000;
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Close_Ptr dw 0 ; pointer to CLOSE Queue ;AN000;
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Buff_Size dw 0 ; cache buffer size including header ;AN000;
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Free_Size dw 0 ; size of Free area in bytes
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Next_Drv_Hdr_Ptr dw 0 ; pointer to next drive header
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DRIVE_HEADER ENDS
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FILE_HEADER STRUC ; File header structure ;AN000;
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FH_Phys_Clus_Num dw 0 ; starting physcial clustnum of file ;AN000;
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FH_Refer_Count dw 0 ; reference count ;AN000;
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FH_Next_Extn_Ptr dw 0 ; pointer to first extent of the file;AN000;
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FH_Next_Hdr_Ptr dw 0 ; pointer to next file header ;AN000;
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FH_MRU_Extn_Ptr dw 0 ; pointer to MRU extent
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dw 0
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dw 0
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dw 0
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FILE_HEADER ENDS ;AN000;
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EXTENT_HEADER STRUC ; extend header structure ;AN000;
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EH_Logic_Clus_Num dw 0 ; starting logical clus num of extent;AN000;
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EH_Phys_Clus_Num dw 0 ; starting physical clus numof extnt;AN000;
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EH_Count dw 0 ; range of logical clusnum in the extnt
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EH_Next_Extn_Ptr dw 0 ; pointer to next extent ;AN000;
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EH_Prev_Extn_Ptr dw 0 ; pointer to previous extent ;AN000;
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EH_Next_LRU_Ptr dw 0 ; pointer to next LRU extent
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EH_Prev_LRU_Ptr dw 0 ; pointer tp previous LRU extent
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dw 0
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EXTENT_HEADER ENDS
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