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362 lines
9.1 KiB
Plaintext
362 lines
9.1 KiB
Plaintext
;
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; File: DTDBMgrPriv.a
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;
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; Contains: private equates for the desktop database manager
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;
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; Written by: Dave Feldman
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;
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; Copyright: © 1989-1991 by Apple Computer, Inc., all rights reserved.
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;
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; Change History (most recent first):
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;
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; <12> 9/13/91 JSM Cleanup header.
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; <11> 1/30/91 dnf csd, #dnf002: Set the max key length for 7.0 desktop btree
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; files to 37 to make it compatible with the (hardcoded) BTCheck
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; routine in AppleShare 2.0.1 servers.
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; <10> 1/22/91 dnf (ppd, tgh) Make _HOpen calls through the i/o bottleneck to make
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; sure that dtOwnCall is set.
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; <9> 12/18/90 dnf (dba) Make _BTInit, _BTOpen, and _BTClose synchronous. Make
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; _BTClose, _Close and _BTOpen happen in SystemMode, make _HOpen
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; synchronous.
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; <8> 12/5/90 dnf <dba> Spiff up AppLocals by using real records in the
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; definition.
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; <7> 9/22/90 dnf Move interruptRegs into QMgrEqu.a
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; <6> 8/6/90 dnf Add data structures to DTDBQElt to implement better btree hint
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; control.
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; <5> 6/2/90 dnf Get rid of obsolete fields in DTDBQElt
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; <4> 5/4/90 dnf Change MaxKeySize to 11
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; <3> 4/10/90 dnf Move MaxCommentLen to DTDBEqu.a
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; <2> 2/4/90 dnf Add storage for btree hint across calls
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; <1.6> 12/8/89 dnf Make HOpen and BTOpen calls in SystemMode
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; <1.5> 11/8/89 dnf Changed datafile type to match appleshare, add data structures
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; for unmount notify
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; <1.4> 10/11/89 dnf Added macros for i/o bottleneck
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; <1.3> 9/18/89 dnf Type & creator equates, upped data clump size
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; <1.2> 8/7/89 dnf Change IconRec to IconDRec to avoid collisions with QD equates
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; <1.1> 7/6/89 dnf Got rid of equate of fsVars
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; <1.0> 5/30/89 dnf Integrate CatSearch, FileID's and Desktop Database Mgr into one
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; ptch
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;
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;
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; Debugging flag
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;
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DTDebug equ 0 ; set to 1 for debug code
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;
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; These macros generate variable length symbol names for Macsbug. The first
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; argument is the routine name, in quotes. 'Foo', for example. The second is an
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; integer indicating the amount of constant data. This number is used by macsbug
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; to figure out where the next routine starts.
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;
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macro
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_DTDebugTail &routineName, &dataSize
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if DTDebug then
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dc.b $80 ; i.e variable length string, next byte has length
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dc.b &len(&routineName)-2 ; length of string (-2 for the quotes around it)
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dc.b &routineName ;
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align 2
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dc.w &dataSize ; size (bytes) of constant data
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endif
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endm
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; same as above, but adds an rts for routines which don't end with one.
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macro
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_DTDebugRts &routineName, &dataSize
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if DTDebug then
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rts ; many DT routines don't end w/rts, so add one in.
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dc.b $80 ; i.e variable length string, next byte has length
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dc.b &len(&routineName)-2 ; length of string (-2 for the quotes around it)
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dc.b &routineName ;
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align 2
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dc.w &dataSize ; size (bytes) of constant data
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endif
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endm
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;
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; Private equates:
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;
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DTBTClpSize EQU 32 ; Number of nodes per clump in DB File
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DTFClpSize EQU 32 ; Number of allocation blocks per clump in DT File
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DTMinVolSize equ 2*1024*1024 ; 2 Mb is minimum size ejectable volume to support
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DTBigPBSize equ 200 ; as big as largest BT or HFS param block (¥¥ get real value)
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DTStackSize equ 1500 ; 1.5K should to do for DT stack
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DTDataClump equ 64*1024 ; add to the icon file size 32K at a time
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; finder info
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DTDataFileType equ 'DTFL'
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DTBTFileType equ 'BTFL'
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DTFileCreator equ 'DMGR'
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; DT Manager's global area, allocated at startup time.
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; The global area starts with a header for the queue of all open databases
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DTGlobals record 0, increment
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qFlags ds.w 1 ; queue header flags word
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qHead ds.l 1 ; first element in queue [pointer]
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qTail ds.l 1 ; last element in queue [pointer]
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targetVRef ds.w 1 ; volume current call is aimed at
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infoFlags ds.b 1 ; general state flags
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size equ *-DTGlobals
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endr
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; bit positions for infoFlags
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notifyBit equ 0 ; true if volume notify already requested
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IconKeyType equ 1 ; Icon key type
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IconKey record 0, increment
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Len ds.b 1 ; Overall key length [byte]
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Type ds.b 1 ; Key type [byte], $01 for icon keys
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CrType ds.b 4 ; Creator type
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FlType ds.b 4 ; File type [for Icon keys]
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IconType ds.b 1 ; Icon Type (byte) [for Icon keys]
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filler ds.b 1 ; filler to match original dt format key
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IKLen equ *-IconKey
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endr
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IconDRec record 0, increment ; <1.2>
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TagInfo ds.l 1 ; Tag info [for Icon and APPL entries]
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IconPos ds.l 1 ; Icon ID [File position in Desktop datafile]
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IconSize ds.w 1 ; Icon Size [word]
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IRLen equ *-IconDRec ; size of an icon's entry in the BT file
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endr
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APPLKeyType equ 2 ; APPL key type
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APPLKey record 0, increment
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Len ds.b 1 ; Key length
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Type ds.b 1 ; Key type [byte], $02 for APPL keys
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CrType ds.l 1 ; Creator type
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SeqNum ds.w 1 ; APPL serial number
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AKLen equ *-APPLKey
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endr
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APPLRec record 0, increment
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TagInfo ds.l 1 ; Creation date
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ParID ds.l 1 ; APPL (parent) directory ID
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CName ds.b 32 ; APPL CName (¥¥ magic constant)
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ARLen equ *-APPLRec
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endr
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CommentKeyType equ 3 ; Comment key type
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CommentKey record 0, increment
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Len ds.b 1 ; Overall key length [byte]
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Type ds.b 1 ; Key type [byte], $03 for file comment keys
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CNID ds.l 1 ; File number [long]
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CKLen equ *-CommentKey
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endr
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MaxCommentLen equ 199 ; max # chars in a file comment
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CommentRec record 0, increment
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CmtSize ds.b 1 ; Size of comment
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CmtData ds.b MaxCommentLen ; Comment text
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CRLen equ *-CommentRec
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endr
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DTMaxKeySize equ 37 ; Maximum overall key size (must be odd)
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DTMaxIconSize equ 4500 ; limit on icon data (¥¥ Get real number here)
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MaxDTRecSize equ CommentRec.CRLen ; 'cause it's the longest
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BTMaxKeyLen equ maxKeyLen ; ¥¥ this should change when btequ changes
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;
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; DT Manager database queue element
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; One per open database, allocated at DTOpen time
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;
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DTDBQElt record 0, increment
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qLink ds.l 1 ; points to next entry
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qType ds.w 1 ; DTQ entry type
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DTRefNum ds.w 1 ; This database's DTRefnum
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DBRefNum ds.w 1 ; database's B*-Tree file refNum [Word]
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DFRefNum ds.w 1 ; database's icon data file refNum [Word]
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Flags ds.b 1 ; Flags [Byte]
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Reserved ds.b 1 ; [Byte]
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XVRefNum ds.w 1 ; VRefNum of volume for which DT was opened
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VRefNum ds.w 1 ; VRefNum of volume containing DB & DF files
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ParID ds.l 1 ; Directory containing Desktop files
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Index ds.w 1 ; B*-Tree record index [word]
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DFClumpSize ds.l 1 ; allocation clump for data file
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lastHint ds.l 4 ; the last btree hint we had (¥¥ magic length)
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Size equ *-DTDBQElt
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endr
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; Flag bits in Flags [top byte]
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;
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; <none for now>
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; stack from for volume notification procedure
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notifyFrame record 0, increment ; pascal stack frame with no locals
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A6Link ds.l 1
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retAddr ds.l 1
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vnbPtr ds.l 1 ; pointer to VolumeNoticeBlock
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theErr ds.w 1 ; output parameter
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endr
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; Generic locals records
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; applications
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APPLLocals record 0, increment
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bigPB ds.b DTBigPBSize ; big enough for any file or btree call
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Key ds.b APPLKey ; big enough for an application key
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Data ds.b APPLRec ; big enough for an application record
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AppSpec ds.b FSSpec ; FSSpec with name of app
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index ds.w 1 ; hold a record index
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crDate ds.l 1 ; creation date of the app
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theDate ds.l 1 ; date on an interesting record
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theSeqNum ds.w 1 ; seqnum on an interesting record
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count ds.w 1 ; count
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flags ds.b 1 ; iterator signal flags
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align 2
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LSize equ *-APPLLocals
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endr
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; values for iterator signal flags
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; (AddAPPL flags)
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applSawARecord equ 0 ; iterator saw at least 1 good record
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applFoundADup equ 1 ; iterator saw a duplicate entry
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applFoundASeqNum equ 2 ; iterator found a good seqnum
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; (RemoveAPPL flags)
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applFoundAMatch equ 3 ; iterator saw a match
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applNotLeftmost equ 4 ; the match isn't the leftmost entry
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; macros for the I/O bottleneck
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macro
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go_HOpen
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bsr myBeginSystemMode
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bsr doHOpen
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bsr myEndSystemMode
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endm
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macro
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go_HDelete
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bsr doHDelete
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endm
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macro
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go_Close
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bsr myBeginSystemMode
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bsr doClose
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bsr myEndSystemMode
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endm
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macro
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go_Read
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bsr doRead
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endm
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macro
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go_Write
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bsr doWrite
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endm
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macro
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go_GetCatInfo
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bsr doGetCatInfo
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endm
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macro
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go_HGetFileInfo
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bsr doHGetFileInfo
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endm
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macro
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go_HGetVInfo
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bsr doHGetVInfo
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endm
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macro
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go_HCreate
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bsr doHCreate
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endm
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macro
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go_Allocate
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bsr doAllocate
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endm
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macro
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go_SetEOF
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bsr doSetEOF
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endm
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macro
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go_GetEOF
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bsr doGetEOF
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endm
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macro
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go_GetFCBInfo
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bsr doGetFCBInfo
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endm
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macro
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go_HSetFileInfo
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bsr doHSetFileInfo
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endm
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macro
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go_GetVolParms
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bsr doGetVolParms
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endm
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macro
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go_FlushVol
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bsr doFlushVol
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endm
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macro
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go_MakeFSSpec
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bsr doMakeFSSpec
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endm
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macro
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go_BTInit
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_BTInit
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endm
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macro
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go_BTOpen
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bsr myBeginSystemMode
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_BTOpen
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bsr myEndSystemMode
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endm
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macro
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go_BTClose
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bsr myBeginSystemMode
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_BTClose
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bsr myEndSystemMode
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endm
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macro
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go_BTSearch
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bsr doBTSearch
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endm
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macro
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go_BTGetRec
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bsr doBTGetRec
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endm
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macro
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go_BTSetRec
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bsr doBTSetRec
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endm
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macro
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go_BTReplRec
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bsr doBTReplRec
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endm
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macro
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go_BTDelRec
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bsr doBTDelRec
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endm
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macro
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go_BTFlush
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bsr doBTFlush
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endm
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