Macintosh-SW/boot3
1
0
Fork 0
mirror of https://github.com/elliotnunn/boot3.git synced 2024-06-09 02:29:27 +00:00
Code Issues Projects Releases Wiki Activity
master
boot3/OS/HFS/TFS.a
Elliot Nunn 5b0f0cc134 Bring in CubeE sources 
Resource forks are included only for .rsrc files. These are DeRezzed into their data fork. 'ckid' resources, from the Projector VCS, are not included.

The Tools directory, containing mostly junk, is also excluded.
2017-12-26 10:02:57 +08:00

1993 lines
79 KiB
Plaintext
Raw Permalink Blame History

;
; File: TFS.a
;
; Contains: This file is the controlling file for the Macintosh Turbo file
; system. It contains initialization code and the file system's
; queueing and dispatch routines.
;
; Roots: This system exploits the dispatching mechanism used by the earlier
; Macintosh file system written by Larry Kenyon et al. Relevant
; code was taken from that system and modified as appropriate.
;
; Copyright: © 1982-1993 by Apple Computer, Inc. All rights reserved.
;
; Change History (most recent first):
;
; <SM9> 8/27/93 BH Made DSAlertRect bigger for the disk-switch alert in
; manual-eject systems to keep it the same size as the various
; manual-eject alerts, which have also been enlarged.
; <SM8> 8/3/93 BH Rewrote DSHook for manual-eject drive support.
; <SM7> 6/7/93 kc Roll in missing part of DSHookPatch from reality that sets the fsNoAllocate bits.
; <SM6> 11/12/92 PN Get rid of ³ 020 conditionals
; <SM5> 10/29/92 SWC Changed SCSIEqu.a->SCSI.a.
; <SM4> 9/15/92 RB #1042050,#1042640,#Fixed a bug in DSHook where the PostUpdate
; routine was not duplicating a rectangle pointer in the stack
; correctly. This caused a bomb after a disk had been asked for
; and it got inserted in the drive. The satck was trashed 4 bytes.
; <SM3> 5/21/92 kc Append "Trap" to the names of
; OpenWD,CloseWD,GetWDInfo,OpenDF,UnMountVol,FlushVol,OpenWD,Close
; WD,GetWDInfo,ReName,OpenRF,OpenDF,GetFPos,SetFPos,GetEOF,SetEOF,
; Eject,SetVol,GetVolTrap,Enqueue and Dequeue to avoid name
; conflict with the glue.
; <SM2> 5/18/92 CS Fix bug in OpenCall that I (kc) introduced in the patch roll in.
; <SM1> 4/1/92 kc Rolled in HFSDispHook from FileMgrPatches.a.
; Moved the stub dispatch handlers (VolumeCall,
; RefNumCall,OpenCall and UnknownCall) and copied the
; routines InstallVectors, FSGrowPatchInit,
; QMInit, CountFCBs, OpenAttemptHook, AllocateFCBs, DoFSCleanUp
; Rolled in patches to DSHook.
; include FileMgrHooks.a till someone rolls it in.
; ¥ Pre-SuperMario comments follow ¥
; <4> 9/27/91 JSM DonÕt use hasCQD conditional, all future ROMs will have color
; QuickDraw.
; <3> 9/12/91 JSM Cleanup header.
; <2> 6/12/91 LN Changed #include 'HardwareEqu.a' to 'HardwarePrivateEqu.a'
; <2.6> 6/12/89 GGD Fixed bugs in <C150 09sep86> which intended to allow
; cmd-shift-0/1/2 to eject disks during a disk switch dialog, but
; never worked. (ESPRIT SHOULD ALSO GET THIS FIX)
; <2.5> 5/25/89 GGD Deleted 4 extra lines of code that were accidently pasted in the
; wrong place, in the Switcher Table initialization code. This
; would cause a random long word (whose address is a function of
; the number of FCBs from the boot blocks) in the system heap to
; get trashed. This fixes problems noticed in Aurora B1 ROMs, and
; needs to be fixed in Esprit also.
; <2.4> 5/23/89 DAF Corrected color updates in DSHook
; <2.3> 4/13/89 dnf Completed export
; <2.2> 4/13/89 DNF Exported vFileRead, vFileWrite, and vFileClose
; <2.0> 3/27/89 DNF =
; <2.1> 3/27/89 DNF This comment documents the change from V1.7 to V1.8/V1.9/V2.0.
; There have been node real code changes since V1.7. V1.8 Added
; forROM conditionals around the disk-switch code, since it jumps
; to other spots in the ROM. Note that the comment in V1.6 is no
; longer true; RAM versions use the ROM's disk switch code. The
; overridden V1.8, V1.9, the accidentally commentless V2.0 and
; this file all contain the same code.
; <¥1.9> 3/27/89 DNF whoops. v1.8 was checked in from the wrong directory. Here's the
; right one.
; <¥1.7> 3/20/89 CCH Added Export of FSQueueSync and CmdDone for CacheControl.a.
; <1.6> 3/2/89 DNF removed references to forROM; HFS now builds identically for ram
; or rom
; <1.5> 2/20/89 rwh changed from CPU-based to feature-based conditionals.
; <1.4> 1/16/89 GGD Added a scratch register parameter to the BigJSR macro calls
; since it will be needed when they change to use PC relative
; addressing.
; <1.3> 11/21/88 CCH Replaced references to forRAM with ÒNOT forROM.Ó
; <1.2> 11/17/88 GGD Moved file system initialization code from StartBoot into TFS.a,
; Changed BigJsr's into Jsr, since they now reach.
; <1.1> 11/10/88 CCH Fixed Header.
; <1.0> 11/9/88 CCH Adding to EASE.
; <¥1.1> 9/23/88 CCH Got rid of inc.sum.d and empty nFiles
; <1.0> 2/11/88 BBM Adding file for the first time into EASEÉ
; 11/10/87 JB (C957) Rolled in changes from patches S084, PM120, PP227, &
; PM289. Fixed CmdDone logic for "NoMacDskErr". Instead of special
; casing here, disk format package (PACK 2) will be modified to
; accept "ExtFSErr" as a legitimate format request.
; <C914> 10/19/87 rwh Port to Modern Victorian
; 10/16/87 MSH Added nHardwareEqu.a to INCLUDES for Laguna support.
; 6/10/87 EHB Added INCLUDEs for colorEqu.a and nsysequ.a again.
; 6/2/87 DAF Added INCLUDEs for colorEqu.a and nsysequ.a. Added 020 asm
; directive if on numac.
; 5/12/87 DAF Rolled in DSHook patch to not save bits behind dialog when on
; CQD-equipped system and in >1-bit mode.
; 3/3/87 BB Modified CmdDone to call external file systems if "NoMacDskErr"
; is returned from MountVol.
; 2/19/87 BB Added EXPORTs for vectored MtCheck, CheckReMount, FindDrive,
; DtrmV2, FClose, and FlushMDB.
; 10/27/86 BB Added EXPORTs for vectored CkExtFS, DtrmV3, TstMod, and BMChk
; routines.
; 9/25/86 BB Updated to use new MPW equate files.
; <C150> 9/9/86 TJ Added vDoEject vector for access by other system routines that
; need to handle manual diskette ejection. Extended to accept
; Command-Shift-0 for drive #3.
; 1/20/86 LAK Added .DEF of FindDrive for BTAlloc usage in updating alternate
; MDB.
; 11/3/85 LAK One more tweak to disk-switch: if we get a non-memfull error on
; our mount (e.g., IOErr because double-sided disk was inserted
; into 1-sided drive), we eject that disk and reenter our wait
; loop. Also fixed bug when remounting an offline volume (D3 not
; set up).
; 11/2/85 LAK Call DoEject for cmd-shift-1 or 2 during disk switch DIP wait.
; In case user has inserted needed 2-sided disk into his old
; external 1-sided drive (removes need for paper clip eject).
; 10/29/85 LAK Added Defs for vectored routines.
; 10/22/85 PWD Fixed CmdDone to check PMSP for traps w. TFS bit set but
; DirID=0.
; 10/16/85 PWD Added _LockRng and _UnlockRng dispatches
; 10/14/85 PWD Added _ReadWDCB dispatch (trap 15)
; 10/8/85 LAK Added .Def of vLg2Phys (for ROM vector).
; 10/2/85 LAK Added debug code at CmdDone to check for a non-released buffer.
; (may want to take this out since it is time-consuming).
; 10/1/85 LAK Added .Ref of MarkA5Block. Add .Def of Lg2Phys for Cache.
; Convert positive internal errors to FSDSIntErr at CmdDone. Cut
; out Queue code convert drive numbers to VRefNums (this is now
; handled by GetVCBDrv in TFSCommon). Added Refs of
; CacheWrIP,CacheRdIP. Added Def of TFSVCBTst. Set up global
; asynchronicity flag, FSCallAsync, at FSDispatch. Patched
; disk-switch hook for ROM to look for cmd-. abort and return
; VolOffLinErr for that case (let's see how it goes).
; 9/26/85 PWD Added SetupDef entry point dispatch for external FS support.
; 9/25/85 PWD Changed to allow SkipPMSP to come on in mid-parse in CmdDone
; path
; 9/20/85 LAK Added .Ref of TrashFBlocks.
; 9/8/85 LAK Added Def of MarkVCBTime. Added Ref of UpdateFree.
; 9/5/85 LAK Clear CacheFlag on exit.
; 9/5/85 LAK ParamErr instead of IOErr if D0 parameter to $Ax60 trap is out
; of range.
; 9/2/85 LAK Added .Ref of MarkBlock.
; 8/30/85 LAK Added .Ref of TrashVBlks. Removed .Ref of RelCache.
; 8/27/85 LAK Why waste a word in _FSControl? Remunged dispatch a bit, too.
; 8/22/85 PWD Added _SetUpWDCB trap dispatch
; 7/31/85 PWD Added _FSControl trap
; 7/27/85 PWD Added Poor Man's Search Path mechanism
; 7/17/85 PWD Changed TFSDispatch to store trap index in ioTrap for use by
; ext. FS and volume switch re-trap (TrapAgain)
; 6/14/85 PWD Added EXT.L to make error codes into longs at CmdDone
; 5/1/85 PWD Expanded dispatch table to accomodate new TFS traps
; 4/22/85 PWD Fixed dispatcher table indexing to use word offsets
; consistently.
; 3/13/85 PWD Added TFS trap dispatcher
; 2/8/85 PWD Added .Include of ToolEqu for TIOCore use.
; 2/5/85 PWD Changed to use Tlasm- equates (including TFSEqu)
; 9/24/84 GSS Added include of RAM version trap install code, and def for
; Offline call
; 8/5/84 GSS New today. (taken from Larry Kenyon's Mac File System)
;
;_______________________________________________________________________
;
; External Routines: Enqueue,Dequeue,InitQueue
;
; Internal Routines: FSQueue,FSQueueSync
;
;_______________________________________________________________________
BLANKS ON
STRING ASIS
MACHINE MC68020
SonyNonPortable EQU 1
PRINT OFF
LOAD 'StandardEqu.d'
INCLUDE 'HardwarePrivateEqu.a'
INCLUDE 'SonyEqu.a'
INCLUDE 'Processes.a'
INCLUDE 'MFPrivate.a'
INCLUDE 'FileMgrPrivate.a'
INCLUDE 'SCSI.a'
INCLUDE 'SCSIPriv.a'
INCLUDE 'GestaltEqu.a'
INCLUDE 'InternalMacros.a'
INCLUDE 'SysPrivateEqu.a'
INCLUDE 'BTreeEqu.a'
PRINT ON
PRINT NOGEN
;_______________________________________________________________________
;
; Routine: TFSDispatch
;
; Arguments: D0.W = TFS trap index
; D1.W = Trap ($Ax60)
; A0.L = Parameter Block Pointer
;
; Called by: EMT1010
;
; Function: Dispatch routine for the _HFSDispatch trap.
;
; The deal with $A060 trap numbers:
; $00-$1f HFS calls
; $20-$2f Desktop Manager Calls
; $30-$3f AppleShare calls (owned by AppleShare group)
; $40-$4f More appleshare calls
; $60-$7f More HFS calls
;
; Modification History:
;
; 13-Mar-85 PWD New today.
; <25Sep85> PWD Added SetPMSP (trap 12): bumped _SetupWDCB to index 13.
; <14Oct85> PWD Added _ReadWDCB dispatch (trap 15)
;_______________________________________________________________________
MaxTrapNum Equ $70
TFSDispatch Proc Export
Import UnknownCall
tst.w d0 ; check lower bound of selector
blt.l UnknownCall ; negative traps are no good
cmp.w #MaxTrapNum,d0 ; check upper bound of selector
bge.l UnknownCall ; off the deep end
move.w d1,ioTrap(a0) ; save the unmunged trap
andi.w #$0F00,ioTrap(a0) ; leave only modifiers (Async etc.)
move.b d0,ioTrap+1(a0) ; save the trap selector
lea TFSTrpTbl,a2 ; address of the dispatch table
adda.l (a2,d0.w*4),a2 ; add the routine offset
jmp (a2) ; jump to the routine
macro
DispatchEntry &where
import &where
dc.l &where-TFSTrpTbl
endm
TFSTrpTbl ; pc relative data
DispatchEntry FSControl ; $00 Special control entry point
DispatchEntry OpenWDTrap ; $01 Open a working directory
DispatchEntry CloseWDTrap ; $02 Close a working directory
DispatchEntry SetDir ; $03 Set a default directory
DispatchEntry GetDir ; $04 Get default directory information
DispatchEntry TFMove ; $05 Move a CNode into another directory
DispatchEntry CreateDir ; $06 Create a directory CNode
DispatchEntry GetWDInfoTrap ; $07 Get WDCB infomation
DispatchEntry GetFCBInfo ; $08 Get FCB information
DispatchEntry GetCatInfo ; $09 Get expanded file/dir information
DispatchEntry SetCatInfo ; $0A Change CNode information
DispatchEntry SetVolInfo ; $0B Change volume information
DispatchEntry SetPMSP ; $0C Set up PMSP hook and enable/disable PMSP
DispatchEntry SetUpWDCB ; $0D Set up WDCB [raw internal call only]
DispatchEntry SetUpDef ; $0E Set up default vol&dir [raw internal]
DispatchEntry ReadWDCB ; $0F Get WDCB information [raw internal]
DispatchEntry LockRng ; $10 Lock a byte range
DispatchEntry UnLockRng ; $11 Unlock a byte range
DispatchEntry UnknownCall ; $12
DispatchEntry UnknownCall ; $13
DispatchEntry CreateFileIDRef ; $14
DispatchEntry DeleteFileIDRef ; $15
DispatchEntry ResolveFileIDRef ; $16
DispatchEntry PBHExchangeFiles ; $17
DispatchEntry CMCatSearch ; $18
DispatchEntry CheckCSPB ; $19
DispatchEntry OpenDFTrap ; $1A
DispatchEntry MakeFSSpec ; $1B
DispatchEntry UnknownCall ; $1C
DispatchEntry UnknownCall ; $1D
DispatchEntry UnknownCall ; $1E
DispatchEntry UnknownCall ; $1F
DispatchEntry DTGetPath ; $20
DispatchEntry DTCloseDown ; $21
DispatchEntry DTAddIcon ; $22
DispatchEntry DTGetIcon ; $23
DispatchEntry DTGetIconInfo ; $24
DispatchEntry DTAddAPPL ; $25
DispatchEntry DTRemoveAPPL ; $26
DispatchEntry DTGetAPPL ; $27
DispatchEntry DTSetComment ; $28
DispatchEntry DTRemoveComment ; $29
DispatchEntry DTGetComment ; $2a
DispatchEntry DTFlush ; $2b
DispatchEntry DTReset ; $2c
DispatchEntry DTGetInfo ; $2d
DispatchEntry DTOpenInform ; $2e
DispatchEntry DTDelete ; $2f
DispatchEntry GetVolParms ; $30 GetVolParms
DispatchEntry VolumeCall ; $31 GetLogInInfo
DispatchEntry VolumeCall ; $32 GetDirAccess
DispatchEntry VolumeCall ; $33 SetDirAccess
DispatchEntry VolumeCall ; $34 MapID
DispatchEntry VolumeCall ; $35 MapName
DispatchEntry VolumeCall ; $36 CopyFile
DispatchEntry VolumeCall ; $37 MoveRename
DispatchEntry OpenCall ; $38 OpenDeny
DispatchEntry OpenCall ; $39 OpenRFDeny
DispatchEntry VolumeCall ; $3A Reserved for future use
DispatchEntry VolumeCall ; $3B Reserved for future use
DispatchEntry VolumeCall ; $3C Reserved for future use
DispatchEntry VolumeCall ; $3D Reserved for future use
DispatchEntry VolumeCall ; $3E Reserved for future use
DispatchEntry VolumeCall ; $3F GetVolMountInfoSize
DispatchEntry VolumeCall ; $40 GetVolMountInfo
DispatchEntry UnknownCall ; $41 VolumeMount
DispatchEntry VolumeCall ; $42 Share
DispatchEntry VolumeCall ; $43 UnShare
DispatchEntry UnknownCall ; $44 GetUGEntry
DispatchEntry UnknownCall ; $45 ServerControl
DispatchEntry UnknownCall ; $46 ServerStartup
DispatchEntry UnknownCall ; $47 Reserved for future use
DispatchEntry UnknownCall ; $48 Reserved for future use
DispatchEntry UnknownCall ; $49 Reserved for future use
DispatchEntry UnknownCall ; $4A Reserved for future use
DispatchEntry UnknownCall ; $4B Reserved for future use
DispatchEntry UnknownCall ; $4C Reserved for future use
DispatchEntry UnknownCall ; $4D Reserved for future use
DispatchEntry UnknownCall ; $4E Reserved for future use
DispatchEntry UnknownCall ; $4F Reserved for future use
DispatchEntry GetParallelFCBFromRefnum ; $50
DispatchEntry RefNumCall ; $51 Reserved for future use
DispatchEntry RefNumCall ; $52 Reserved for future use
DispatchEntry RefNumCall ; $53 Reserved for future use
DispatchEntry RefNumCall ; $54 Reserved for future use
DispatchEntry RefNumCall ; $55 Reserved for future use
DispatchEntry RefNumCall ; $56 Reserved for future use
DispatchEntry RefNumCall ; $57 Reserved for future use
DispatchEntry RefNumCall ; $58 Reserved for future use
DispatchEntry RefNumCall ; $59 Reserved for future use
DispatchEntry RefNumCall ; $5A Reserved for future use
DispatchEntry RefNumCall ; $5B Reserved for future use
DispatchEntry RefNumCall ; $5C Reserved for future use
DispatchEntry RefNumCall ; $5D Reserved for future use
DispatchEntry RefNumCall ; $5E Reserved for future use
DispatchEntry RefNumCall ; $5F Reserved for future use
DispatchEntry VolumeCall ; $60 GetAltPrivs
DispatchEntry VolumeCall ; $61 SetAltPrivs
DispatchEntry DoFSCleanUp ; $62 FSCleanUp
DispatchEntry AllocateFCBs ; $63 AllocateFCBs
DispatchEntry VolumeCall ; $64 Reserved for future use
DispatchEntry VolumeCall ; $65 Reserved for future use
DispatchEntry VolumeCall ; $66 Reserved for future use
DispatchEntry VolumeCall ; $67 Reserved for future use
DispatchEntry VolumeCall ; $68 Reserved for future use
DispatchEntry VolumeCall ; $69 Reserved for future use
DispatchEntry VolumeCall ; $6A Reserved for future use
DispatchEntry VolumeCall ; $6B Reserved for future use
DispatchEntry VolumeCall ; $6C Reserved for future use
DispatchEntry VolumeCall ; $6D Reserved for future use
DispatchEntry VolumeCall ; $6E Reserved for future use
DispatchEntry VolumeCall ; $6F Reserved for future use
EndProc
TurboFS PROC EXPORT
Export UNLOCKRNG,LOCKRNG,READWDCB,SETUPDEF,SETUPWDCB,SETPMSP,FSCONTROL
Export ALLOCATEFCBS,DOFSCLEANUP,GTNXTMATCH,GT1STMATCH,GETVOLPARMS
Export FLUSHVFILES,FCLOSE,REFNUMCHECK,PUSHCNAME,CVFLGS,POPCNAME
Export ExtOffLinCk,FNDFILNAME,DTRMV3,GT1STFCB,GTNXTFCB,FSQUEUE
EXPORT vDoEject ; <C150/09sep86>
EXPORT DivUp,RoundAlloc,Lg2Phys,TFSVCBTst ; <01Oct85>
EXPORT FInitQueue
EXPORT MountVol,UnMountVolTrap,FlushVolTrap,MarkVCB,MarkVCBTime,FlushMDB ; <08Sep85>
EXPORT OpenWDTrap,CloseWDTrap,SetDir,GetDir,GetWDInfoTrap
EXPORT FileOpen,FileClose
EXPORT FileRead,FileWrite
EXPORT FSQueueSync, CmdDone
EXPORT CreateDir,FileCreate,FileDelete,ReNameTrap,TFMove,OpenRFTrap,OpenDFTrap
EXPORT GetFPosTrap,SetFPosTrap,FileAlloc
EXPORT GetEOFTrap,SetEOFTrap,FlushFile
EXPORT GetFCBInfo
EXPORT GetFileInfo,SetFileInfo,SetFilType,RstFilLock,SetFilLock
EXPORT GetCatInfo,SetCatInfo
EXPORT GetVCBRfn,GetVolInfo,SetVolInfo,EjectTrap,Offline
EXPORT SetVolTrap,GetVolTrap
EXPORT DoEject,MakeStkPB,FindDrive ;<20Jan86>
EXPORT vDtrmV1,vFileOpen,vPermssnChk,vFndFilName,vRfNCall,vAdjEOF ;<29Oct85>
EXPORT vCkExtFS,vDtrmV3,vTstMod,vBMChk ;<27Oct86>
EXPORT vMtCheck,vCheckReMount,vFindDrive,vDtrmV2,vFClose,vFlushMDB ;<19Feb87>
EXPORT vLg2Phys ; <08Oct85>
EXPORT DSHook
EXPORT vFileRead, vFileWrite, vFileClose ;<dnf v2.2,v2.3>
EXPORT InitFS ;<1.2>
IF hasManEject THEN ; <SM8> <BH 03Aug93>
EXPORT SwitchDisk ; for Desk Mgr
EXPORT CleanDSErr ; for Eject patch in FileMgrHooks (ExtFSHookPatch)
ENDIF
IMPORT AllocFakeRgns
IMPORT EnqueueTrap,DequeueTrap,InitQueue
IMPORT InitCache,GetBlock,RelBlock,FlushCache,TrashBlocks,TrashVBlks
IMPORT MarkBlock,MarkA5Block,TrashFBlocks ; <01Oct85>
IMPORT CacheWrIP,CacheRdIP ; <01Oct85>
IMPORT MapFBlock,ExtendFile,TruncateFile,DeallocFile,BlkChk,UpdateFree ; <08Sep85>
IMPORT BTOpen,BTFlush,BTClose,FXMKeyCmp,CMKeyCmp
IMPORT BTSearch,BTGetRecord,BTUpdate
IMPORT CMCreateCN,CMGetCN,CMDeleteCN,CMGetOff,CMMoveCN,CMRenameCN
IMPORT CMUpdateCN
IMPORT WDCBSwOS ; <C152><1.2>
IMPORT PMSPSwOS ; <C152><1.2>
IMPORT DTDBMgrInit,QMInit,CheckDesktopSupport,DesktopCloseDownProc ; from DTDBMgr.a
IMPORT vSyncWait ; from FileMgrHooks.a
IMPORT vAfterFSQHook ; from FileMgrHooks.a
IMPORT fsGeneralWakeUp ; from FileMgrHooks.a
IMPORT fsSCSIFreeHookProc ; from FileMgrHooks.a
IMPORT ProcessMgrExists ; from FileMgrHooks.a
;________________________________________________________________________________
;
; Routine: Stub dispatch handlers
;
; Function: Pass a call to the external File System if it refers to an
; external File System volume.
;
; VolumeCall handles calls defined to take a vRefnum/ioNamePtr
; RefNumCall handles calls which take an FCB refnum
; OpenCall handles all forms of Open (which need to set up an FCB in d1)
; UnknownCall handles call for which there isn't yet a definition
;
; Inputs: A0 = Parameter block
; Output: D0 = error code, RfNumErr or zero.
;________________________________________________________________________________
ExtFSErrExit:
moveq.l #ExtFSErr,d0 ; Good news!
bra.l CmdDone
ParamErrExit:
moveq.l #paramErr, d0 ; It's an unknown trap for a local volume
bra.l CmdDone
;________________________________________________________________________________
;
; Routine: VolumeCall
;
; Function: Handles calls defined to take a vRefnum/ioNamePtr. If
; the call refers to an External File System's volume,
; the call is passed to the external FS. Otherwise,
; a #paramErr is returned to the caller.
;________________________________________________________________________________
entry VolumeCall
VolumeCall:
jsr FSQueue ; Patiently wait our turn
jsr DtrmV3 ; Determine the volume being referred to
bne CmdDone ; Punt at the slightest hint of trouble
move.l a2,ReqstVol ; Point to the volume being referred to
tst.w VCBFSID(a2) ; External FS?
bne ExtFSErrExit ; Branch if it's not a local FS
bra ParamErrExit
;________________________________________________________________________________
;
; Routine: RefNumCall
;
; Function: Handle a refNum-based call. If the call refers to an External
; File System's volume, the call is passed to the external FS.
; Otherwise, a #paramErr is returned to the caller.
;________________________________________________________________________________
entry RefNumCall
RefNumCall:
jsr FSQueue ; chill in line
move.w ioRefNum(a0),d0 ; Pick up the refNum
jsr RefNumCheck ; Check the refNum supplied
bne CmdDone ; Punt at first hint of trouble
movea.l FCBsPtr,a1 ; Point to the FCB table
move.w ioRefNum(a0),d1 ; Pick up the specified refNum
movea.l FCBVPtr(a1,d1),a1 ; Point to the VCB for this volume
move.l a1, ReqstVol ; In case it's #extFSErr
tst.w VCBFSID(a1) ; Local FS?
bne.s ExtFSErrExit ; No - let external file systems have it
bra.s ParamErrExit ; Local doesn't implement this call
;________________________________________________________________________________
;
; Routine: OpenCall
;
; Function: Open a fork with specific Deny modes; pass the call to the External;
; file system if it's for an Ext. FS volume.
;________________________________________________________________________________
;
entry OpenCall
OpenCall:
jsr FSQueue ; Wait our turn
jsr DtrmV3 ; Determine the volume being referred to
bne CmdDone ; Punt at the slightest hint of trouble
move.l a2,ReqstVol ; Point to the volume being referred to
tst.w VCBFSID(a2) ; External FS?
beq.s ParamErrExit ; It's an unknown trap for a local volume
bsr OpenAttemptHook ; let ourselves know we're trying <38>
jsr Gt1stFCB ; get (A1,D1) pointing to first FCB
@1 tst.l FCBFlNm(a1,d1) ; FCB unused
beq.s @90 ; br if so
jsr GtNxtFCB ; get next one until we run out
bcs.s @1
moveq.l #TMFOErr,d0 ; too many files open
clr.w IORefNum(a0) ; make refnum invalid
bra CmdDone
@90 add.l a1,d1 ; Point to the FCB
bra.s ExtFSErrExit ; ... and pass it along
;________________________________________________________________________________
;
; Routine: UnknownCall
;
; Function: Pass a call to the external File System. This routine is called for
; call selectors that are unknown to HFS and the Desktop Manager, but
; which might be implemented for External File Systems.
;________________________________________________________________________________
;
entry UnknownCall
UnknownCall:
jsr FSQueue ; Wait our turn
movea.l VCBQHdr+qHead, a2 ; Pick up pointer to first VCB
move.l a2, ReqstVol ; Point someplace semi-innocuous
bra.s ExtFSErrExit ; ... and pass it along
;_______________________________________________________________________
;
; Routine: FSControl
; Arguments: D1 = trap
; A0 = parameter list pointer
;
; Function: The FSControl entry point is provided in part to allow a
; program to sync up with the file system - the completion
; routine is called with exclusive access to all file system
; data structures...
;
;_______________________________________________________________________
FSControl:
BSR.S FSQueue ; Wait out turn (sync up with FS)
MOVE.L #FSVrsn,ioFSVrsn(A0); Return the current version of TFS <27Aug85>
MOVEQ #0,D0 ; Indicate success
BRA CmdDone ; And call it a day
;________________________________________________________________________________
;
; Routine: RefNumCheck
;
; Function: Check the refNum supplied to make sure it's a real file RefNum.
;
; Inputs: d0 = refnum
; Output: d0 = error code, RfNumErr or noErr
;
; Note:
; This routine is called by the desktop manager and the UnTagFCB _Close patch.
;________________________________________________________________________________
; This routine was rolled into into the file TFS.a. <SM1>
RefNumCheckRegs reg a1/d1
entry RefNumCheck
RefNumCheck
movem.l RefNumCheckRegs, -(sp)
moveq.l #0, d1 ; clear high word
move.w d0, d1 ; make a copy of the refnum
bmi.s @RefNumErrExit ; no negative refnums
divu FSFCBLen,d1 ; Divide by the FCB size
swap d1 ; Get remainder in low word
subq.w #2,d1 ; Is the remainder 2?
bne.s @RefNumErrExit ; If not, no way this could be a refnum
move.l FCBSPtr, a1 ; point to length word of FCB array
cmp.w (a1), d0 ; check against size of FCB array
bgt.s @RefNumErrExit ; Too high? Too bad.
moveq.l #noErr, d0 ; No pwobwem!
bra.s @Exit
@RefNumErrExit:
moveq.l #RfNumErr,d0 ; Indicate a bad refNum
@Exit:
movem.l (sp)+, RefNumCheckRegs
tst.w d0 ; Set condition codes
rts
;_______________________________________________________________________
;
; Routine: FSQueueSync
; Arguments: D1 = trap
; A0 = parameter list pointer
; Calls: calling routine
; Called by: File system routines which must be executed synchronously
; (MountVol,UnMountVol).
;
; Function: This entry point waits until the file system queue is
; empty, and then calls the calling routine, ensuring
; synchronous (with other file system calls) execution of
; the file system routine at user-level (memory manager calls
; are ok). The called routine calls CmdDon when through.
;
; Modification History:
;
; 02 Dec 82 LAK New today.
;
;_______________________________________________________________________
FSQueueSync
BCLR #AsyncTrpBit,D1 ; ensure async bit is not on
; fall thru to FSSync
;_______________________________________________________________________
;
; Routine: FSQueue,CmdDone
; Arguments: D1 = trap
; A0 = parameter list pointer
; Calls: FSQue dispatches to the calling routine unless the call is
; asynchronous and the file system queue is not empty. Pascal
; register save conventions are observed.
; Called by: All file system routines when they may be executed asynchronously
; (i.e., they don't call the memory manager).
;
; Function: This entry point determines whether a call is synchronous
; or asynchronous; it queues up the call, then, if async and
; there is a command already executing, returns immediately.
; Otherwise, it enters the sync wait routine, then goes to
; command dispatch.
;
; All of these commands finish by branching to CmdDone; this
; routine calls any completion routine and dispatches the
; next queued command, if any . . .
;
; Modification History:
;
; 05 Aug 84 GSS New today (taken from Larry Kenyon's Mac File System)
; 24 Sep 84 GSS Removed JSR Enqueue and put in a trap
; 10-Feb-85 PWD Re-inserted JSR to Enqueue (now directly accessible again)
; 13-Mar-85 PWD Added code to set up A6 stack for async context storage\
; 26-Jul-85 PWD Changed to restore ioTrap to $Ax60 and D0 to TFS trap index
; before going off to external file system hook.
; 25-Sep-85 PWD Changed to allow SkipPMSP to come on in mid-parse
; 22-Oct-85 PWD Fixed to check PMSP for traps w. TFS bit set but DirID=0.
;
; Do async calls have to be forced synchronous if the file system is not busy?
; Make sure interrupts are disabled at this time, though, so another request
; issued at interrupt time doesn't interfere.
;_______________________________________________________________________
FSQueue
MOVE.L FSQueueHook,D2 ; queue hook?
BLE.S @0 ; br if not . . .
MOVE.L D2,A1
JSR (A1) ; D2 and A1 are expendable
@0 MOVE.W #1,IOResult(A0) ; set IOResult to "in process"
MOVE.W D1,IOTrap(A0) ; save the trap number
CMP.B #$60,D1 ; TFS trap dispatch?
BNE.S @2 ; If not, leave ioTrap alone
AND.B #$0F,ioTrap(A0) ; Leave only modifier bits <27Aug85>
MOVE.B D0,ioTrap+1(A0) ; Store trap index in low byte <27Aug85>
@2 MOVE.L (SP)+,IOCmdAddr(A0) ; save address to go to when ready
MOVE.W #FSQType,IOType(A0) ; say its a file system queueing element
BTST #AsyncTrpBit,D1 ; async bit on?
BEQ.S @3 ; br if not
TST.B FrcSync ; force it synchronous?
BEQ.S FSAsync ; if not, do it async
BRA.S @4
@3 CLR.L IOCompletion(A0) ; no completion routines for sync calls
@4 MOVE.L A0,-(SP) ; save parameter block ptr
BSR.S FSAsync ; queue it up (and maybe call it)
MOVE.L (SP)+,A0
SyncWait MOVE.W IOResult(A0),D0 ; get the result code into D0
BGT.S SyncWait ; done when result is zero or negative
EXT.L D0 ; ALWAYS return a long error code.
CMP.W #VolOffLinErr,D0 ; volume off-line error? (detected by file
BNE.S @1 ; system) br if not
MOVE.L DskSwtchHook,-(SP) ; OffLineVol points to VCB, A0 to request
BGT.S @1 ; br if there is a hook proc
ADDQ #4,SP ; otherwise, just return
IF ForROM THEN ; <27Mar89 V1.8>
BTST #7, DSAlertRect ; already in our proc? <06Mar85>
BNE DSHook ; br if not <06Mar85>
ENDIF ; <27Mar89 V1.8>
@1 RTS ; return to caller
FSAsync LEA FSQHdr,A1 ; get pointer to file system queue
MOVE SR,-(SP) ; only allow level 3
ORI #HiIntMask,SR ; interrupts for debugging
JSR EnqueueTrap ; queue up the request
ToFSDispatch
BSET #0,FSBusy ; is a request already executing?
BEQ.S FSDispatch ; if not, just call it
; The file system is busy so we're done for now. We'll get to it when
; CmdDone is called. (maybe check here for async call with off-line vols,
; since only eject will force something off-line . . .)
MOVEQ #0,D0 ; no errors (yet)
MOVE.W (SP)+,SR ; re-enable interrupts and return
RTS
; dispatch the next request (also called by CmdDon)
FSDispatch
MOVE (SP)+,SR ; re-enable interrupts
MOVE.L FSQHead,A0 ; get first parameter block
MOVE.L IOCmdAddr(A0),A1 ; get address to call
MOVEM.L D3-D7/A2-A6,-(SP) ; observe Pascal regsave conventions
; Just before the initial dispatch into the routine,
; clear the Poor Man's Search Path:
MOVEA.L PMSPPtr,A6 ; Point to the PMSP table
CLR.W PMSPIndx(A6) ; No entries used yet
BTST #AsyncTrpBit,ioTrap(A0) ; set the flavor for this trap <01Oct85>
IF HFSDebug THEN
ST FSCallAsync ; If we're debugging, always do async <27Oct85>
ELSE
SNE FSCallAsync ; if sync, we'll do our I/O synchronous <01Oct85>
ENDIF ;<HFSDebug>
MOVEA.L HFSStkTop,A6 ; Set up A6 for use as stack pointer
JSR (A1) ;
MOVEM.L (SP)+,D3-D7/A2-A6 ; restore registers
RTS ; and return (all commands finish by
; jumping to CmdDone)
toDSFSErr MOVEQ #DSFSErr,D0
_SysError
CmdDone
IF HFSDebug THEN
BRA.S @3 ; check to see if cache is cool <02Oct85>
@0 MOVEA.L A3,A4 ; start at top of queue <02Oct85>
@1 MOVEA.L CBHFlink(A4),A4 ; position to next buffer <02Oct85>
CMPA.L A3,A4 ; back to top of queue ? <02Oct85>
BEQ.S @2 ; yes -> <02Oct85>
BTST #CBHinuse,CBHFlags(A4) ; buffer in-use? <02Oct85>
BEQ.S @1 ; no, continue search -> <02Oct85>
_HFSDebug $500 ; trap if we exit FS with a buf in-use <02Oct85>
@2 RTS ; 02Oct85
@3 MOVEM.L A3-A4,-(SP) ; save registers <02Oct85>
MOVEA.L SysCtlCPtr,A3 ; A3 = ptr(control cache header) <02Oct85>
BSR.S @0 ; check out the control cache <02Oct85>
MOVEA.L SysBMCPtr,A3 ; <02Oct85>
BSR.S @0 ; check out the alloc map cache <02Oct85>
MOVEA.L SysVolCPtr,A3 ; <02Oct85>
BSR.S @0 ; check out the volume cache <02Oct85>
MOVEM.L (SP)+,A3-A4 ; restore registers <02Oct85>
RealCmdDone
ENDIF
CLR.B CacheFlag ; we're always clean here . . . <05Sep85>
EXT.L D0 ; Make a long of it <14Jun85>
BLE.S @0 ; If zero or negative, we're OK <01Oct85>
MOVE.W D0,HFSDSErr ; Save internal error for debug <01Oct85>
MOVEQ #FSDSIntErr,D0 ; 1-127 codes are internal errors <01Oct85>
@0 MOVE.L FSQHead,A0 ; A0 -> current request
CMP #FSQType,IOType(A0) ; it better be an I/O queue element
BNE.S toDSFSErr ; or else die
CMP.W #FNFErr,D0 ; File not found error?
BNE.S cd_CkExtFS ; If not, we're gone.
BTST #HFSBit,ioTrap(A0) ; Use of HFSBit (=9) is OK on high byte ref.
BEQ.S @2 ; If clear, consider the next entry on the PMSP <22Oct85>
TST.L ioDirID(A0) ; TFS trap: was DidID specified? <22Oct85>
BNE.S cd_CkExtFS ; Yes - there's no search path to consider <22Oct85>
@2 BTST #NoPMSP,HFSFlags ; PMSP disabled? <25Sep85>
BNE.S cd_CkExtFS ; If set, don't search any other directories <25Sep85>
BTST #SkipPMSP,HFSFlags ; Don't bother with PMSP for this operation? <22Aug85>
BNE.S cd_CkExtFS ; If flag isn't set, give it a chance <22Aug85>
MOVEA.L PMSPPtr,A1 ; Point to the search path list
MOVEM.L D1/A2,-(SP) ; Save them across the offline check
MOVE.W PMSPIndx(A1),D1 ; Pick up the index
@3 ADDQ.W #SPEntLen,D1 ; Advance to the next entry
CMP.W (A1),D1 ; Index outside table yet?
BGE.S @5 ; Yes - give up.
MOVE.W SPVRefNum(A1,D1),D0 ; Pick up the VRefNum
BEQ.S @5 ; If there isn't one, give up.
BSR GetVCBRfn ; Find the VCB
BNE.S @5 ; Punt on errors
MOVE.W vcbDrvNum(A2),D0 ; Volume on-line?
BLE.S @3 ; No - try next entry.
@5 MOVE.W D1,PMSPIndx(A1) ; Point to this entry
MOVE.W D1,D0 ; Save the index
MOVEM.L (SP)+,D1/A2 ; Restore scratch registers
CMP.W (A1),D0 ; Exceeded PMSP table limits?
BGE.S @10 ; Yes - punt.
TST.W SPVRefNum(A1,D0) ; Was a new default volume found?
BEQ.S @10 ; Nope - give up.
MOVEQ #0,D0 ; Clear high 3 bytes
MOVE.B ioTrap+1(A0),D0 ; Pick up the TFS trap index again, too
MOVEA.L ioCmdAddr(A0),A1 ; Pick up the CmdAddr from FSQueue
JMP (A1) ; Repeat the trap with a different default
@10 MOVEQ #FNFErr,D0 ; Restore error code
cd_CkExtFS BCLR #SkipPMSP,HFSFlags ; Don't skip PMSP now that this trap's done <25Sep85>
MOVE.L ExtFSHook,D2 ; queue hook?
BLE.S @1 ; br if not . . .
MOVE.L D2,A1 ; (external fs, debug)
JSR (A1) ; leave CmdDone address on the stack
@1
move.l toExtFS,d2 ; Any external file systems defined? <10Nov87>
ble.s cd_DeQueue ; Xfer if not... <10Nov87>
move.l d2,a1 ; Else, point to first proc in chain <10Nov87>
cmp.w #ExtFSErr,d0 ; Pass request on to external FS's? <10Nov87>
beq.s @2 ; Xfer if so... <10Nov87>
cmp.w #NoMacDskErr,d0 ; Did a MountVol call fail? <10Nov87>
bne.s cd_DeQueue ; Xfer if not... <10Nov87>
clr.l ReqstVol ; Force 'No VCB' for this call <10Nov87>
@2
MOVE.L FSQHead,A0 ; A0 -> current request
CMP #FSQType,IOType(A0) ; it better be an I/O queue element
BNE toDSFSErr ; or else die
MOVEQ #ExtFSErr,D0 ; Code to ExtFS's unless an $Ax60 call <03Mar87>
TST.W ioTrap(A0) ; Check trap word:
BLT.S @3 ; If it's negative ($A...), go ahead <27Aug85>
MOVEQ #0,D0 ; Clear high 3 bytes <27Aug85>
MOVE.B ioTrap+1(A0),D0 ; Pick up the TFS trap index <27Aug85>
CLR.B ioTrap+1(A0) ; and restore original trap <27Aug85>
ORI.W #$A060,ioTrap(A0) ; keeping modifier bits <27Aug85>
@3
JSR (A1) ; leave CmdDone address on the stack <25Jan85>
cd_DeQueue MOVE SR,-(SP) ; save interrupt state <27Aug85>
ORI #HiIntMask,SR ; only debug interrupts allowed
CLR.W FSBusy ; clear file system busy boolean
; delete the current request from the queue and post any completion routines
MOVE.L FSQHead,A0 ; A0 -> current request
CMP #FSQType,IOType(A0) ; it better be an I/O queue element
BNE toDSFSErr ; or else die
MOVE.L QLink(A0),FSQHead ; get next request, if any
BNE.S cd_CallComp ; branch if queue not empty <27Aug85>
CLR.L FSQTail ; clear tail ptr, too
cd_CallComp ; <27Aug85>
MOVE (SP)+,SR ; restore interrupt state
MOVE.W D0,IOResult(A0) ; post error code
MOVE.L IOCompletion(A0),D1 ; is there a completion routine?
BEQ.S cd_DispNext ; skip if there's not <27Aug85>
MOVE.L D1,A1 ; get the completion routine address
TST.W D0 ; test result code
JSR (A1) ; call it
; check if there's anything else for this driver to do
cd_DispNext ; <27Aug85>
MOVE SR,-(SP) ; save interrupt state
ORI #HiIntMask,SR ; only debug interrupts allowed
TST.L FSQHead ; is a command pending?
BNE ToFSDispatch ; if so, launch new command
MOVE.W (SP)+,SR ; restore rupt state and return
RTS
;_______________________________________________________________________
;
; Routine: FInitQueue
; Arguments: none
; Calls:
; Function: Clear the queue of all pending commands except for the one
; running (if there is one . . .).
;
; Modification History:
;
; 05 Aug 84 New today. Taken directly from LAK's FS code
;
;_______________________________________________________________________
FInitQueue
MOVE SR,-(SP) ; save interrupt state
ORI #HiIntMask,SR ; only debug interrupts
MOVE.L FSQHead,D0 ; any commands?
BEQ.S @1 ; if not, we are done
MOVE.L D0,A0 ; get pointer to the current routine
CLR.L IOLink(A0) ; get rid of any others
MOVE.L A0,FSQTail ; only this one
@1 MOVEQ #0,D0 ; this routine has no errors
MOVE.W (SP)+, SR
RTS
;_______________________________________________________________________
;
; Routine: DSHook
; Arguments: none
; Calls:
; Function: Implements disk-switch recovery.
;
; 29 Jan 85 LAK Doubled amount of stack slop needed.
;
; To Do:
; - be smarter about number of bytes to save of rectangle (compute from
; rectangle).
;
; There was a bug in the DSHook code used to force updates that is used when there is insufficient
; room on the stack to save the room behind the disk switch dialog. We now use the new global,
; SysErrorUpdateRect, instead. See the patch to GetNextEvent that uses SysErrorUpdateRect for more
; information
;_______________________________________________________________________
DSHook
MOVEM.L A0-A3/A6/D0-D7,-(SP) ; save registers
LEA TrapAgain,A1 ; fill in the trap now
MOVE.W IOTrap(A0),(A1)+ ; Set up the trap to be retried...
MOVE.W #$4E75,(A1) ; Follow it with an RTS
; first try mounting the volume in case it was forced off-line due to mem-full:
IF NOT hasManEject THEN ; if man-eject, defer this a bit <SM8> <BH 03Aug93>
BSR MakeStkPB ; get a parameter block off the stack . .
MOVE.L A0,D7 ; remember it in D7
ENDIF
MOVE.L ReqstVol,A2 ; VCB for requested volume
MOVE.W VCBDRefNum(A2),D3 ; Original drive
BPL.S TellUser ; br if ejected-offline
NEG.W D3 ; negative means non-ejected offline
IF hasManEject THEN ; <SM8> <BH 03Aug93>
BSR MakeStkPB ; get a parameter block off the stack . .
MOVE.W D3,ioDrvNum(A0) ; remount this drive
MOVE.L FSVarsPtr,A1
BSET.B #fsNoAllocate,FSVars.fsFlags(A1) ; inform _Mount that it can't allocate memory
_MountVol
BCLR.B #fsNoAllocate,FSVars.fsFlags(A1)
ADDA.L #IOVQElSize,SP ; goodbye paramblock
TST ioResult(A0) ; success?
BEQ.S DSExit
TellUser MOVE.W #dsReinsert,D4 ; err code for SwitchDisk
BSR.S SwitchDisk ; ask for the disk
; CCR: Z set if disk received, clear if request aborted
DSExit
ELSE ; if NOT hasManEject, here's the old DSHook, most of which resides in
; SwitchDisk for the manual-eject case. <SM8> <BH 03Aug93>
MOVE.W D3,IODrvNum(A0) ; so just remount (reload the buffers)
MOVE.L FSVarsPtr,A2 ; <SM7>
BSET.B #fsNoAllocate,FSVars.fsFlags(A2) ; inform _Mount that it can't allocate memory <SM7>
_MountVol ; <SM7>
BCLR.B #fsNoAllocate,FSVars.fsFlags(A2); <SM7>
TST ioResult(A0) ; <SM7>
BNE.S TellUser ; ?? tell user something ?? <03Nov85> LAK
MOVEQ #0,D3 ; yes, retry the fs call <03Nov85> LAK
BRA DSExit ; exit . . . <03Nov85> LAK
TellUser MOVE.L #$00500078,DSAlertRect ; use alternate alert rect
MOVE.L #$00980195,DSAlertRect+4 ;(high bit is also flag)
; the code the saved the screen behind the dialog has been removed. <SM1>
MOVEQ #DSReInsert,D0 ; ask for diskette back
_SysError
EjectCurDisk
MOVE.L DrvQHdr+QHead,D0 ; figure out if this drive has a disk-in-place
@0 BEQ.S WaitForDsk
MOVE.L D0,A1
CMP.W DQDrive(A1),D3 ; find queue element for this drive
BEQ.S @1
MOVE.L QLink(A1),D0
BRA.S @0
@1 MOVE.B -3(A1),D0 ; DiskInPlace
CMP.B #1,D0 ;
BEQ.S @2
CMP.B #2,D0
BNE.S WaitForDsk ; just wait for disk-insert if no DIP
@2 MOVE.W D3,D1 ; disk to eject
EjectMtDisk ; <03Nov85> LAK
MOVEQ #2,D2 ; a disk-switch eject <03Nov85> LAK
BSR DoEject
WaitForDsk
SUB #EvtBlkSize,SP ; get event buffer space off the stack
@0 MOVE.W #128+8,D0 ; only disk-inserted/key down events interest us
MOVE.L SP,A0 ; event buffer
_GetOSEvent
BNE.S @0 ; loop until we get one . . .
MOVE.L evtMessage(SP),D0 ; drive number/key
MOVE.W evtNum(SP),D3 ; event
MOVE.W evtMeta(SP),D1 ; meta keys (for command bit)
ADD #EvtBlkSize,SP ; free up event buffer space
SUBQ #diskInsertEvt,D3 ; disk-insert event?
BEQ.S @3 ; br if so <02Nov85> LAK
CMP.B #$2E,D0 ; period?
BEQ.S @2 ; br if so <02Nov85> LAK
MOVEQ #$0B,D2 ; seek cmd, shift, not alphaLock, and option <02Nov85> LAK
LSR.W #8,D1 ; get high byte of meta-key info, clear D1.W hi byte <02Nov85> LAK
AND.B D1,D2 ; high byte of meta word contains mod bits <02Nov85> LAK
SUBQ.B #$03,D2 ; want cmd AND shift BUT NOT option <02Nov85> LAK
BNE.S WaitForDsk ; if not so, no FKey action! <02Nov85> LAK
moveq.l #-'3',d1 ; prepare to convert ascii to binary <2.6>
add.b d0,d1 ; keyCode - '3' <2.6>
addq.b #3,d1 ; convert key to drivenum, range check <2.6>
bhs.s WaitForDsk ; if >= '3', or < '0', not an eject req <2.6>
ext.w d1 ; drive number in D1.W <C150/10sep86><2.6>
bne.s @1 ; 1, 2 handled as is, <C150/10sep86>
moveq #3,D1 ; 0 becomes 3 (drive #3) <C150/10sep86><2.6>
@1 moveq #1,D2 ; flag from keyboard, <C150/10sep86>
move.l jDoEject,A0 ; <C150/10sep86>
jsr (A0) ; eject the diskette <C150/10sep86>
BRA.S WaitForDsk ; keep waiting for Disk-In-Place <02Nov85> LAK
@2 BTST #cmdKey,D1 ; command-. for abort? <02Nov85> LAK
BEQ.S WaitForDsk ; keep waiting if not
BRA.S PostUpdate ; otherwise, let the user beware!
; D3 non-zero denotes abort . . .
@3 MOVE.L D7,A0 ; point to the I/O block <02Nov85> LAK
MOVE.W D0,IODrvNum(A0) ; drive to mount
MOVE.W D0,D1 ; save in case we have to eject it <03Nov85> LAK
MOVE.L FSVarsPtr,A2 ; <SM7>
BSET.B #fsNoAllocate,FSVars.fsFlags(A2) ; inform _Mount that it can't allocate memory <SM7>
_MountVol ; <SM7>
BCLR.B #fsNoAllocate,FSVars.fsFlags(A2) ; <SM7>
TST ioResult(A0) ; <SM7>
BEQ.S PostUpdate ; cruise on if ok <03Nov85> LAK
CMP.W #MemFullErr,D0 ; memory full?
BNE.S EjectMtDisk ; br if not - eject it and wait some more <03Nov85> LAK
MOVEQ #-1,D3 ; make it an abort (avoid DS) <01Oct85>
; OK, we're basically done with the disk switched stuff.
; The code the saved the screen behind the dialog has been removed. <SM1>
PostUpdate ; <SM1>
CLR.B DSWndUpdate ; flag GNE to remove the alert . . . <SM1>
PEA DSAlertRect ; union this in <SM1>
MOVE.L ExpandMem,a0 ; <SM1>
PEA ExpandMemRec.SysErrorUpdateRect(a0) ; into this rect <SM1>
move.l (sp),-(sp) ; do it in place <SM1> <SM4> rb
_UnionRect ; <SM1>
DSExit BSET #7, DSAlertRect ; return to old DS rect (also clears exclusion) <06Mar85>
; <removed reinstall of DskSwHook> <06Mar85>
ADD #IOVQElSize,SP ; clean up stack
TST.W D3 ; zero for non-abort . . . <01Oct85>
ENDIF ; hasManEject--the manual-eject and non-manual-eject threads rejoin here
MOVEM.L (SP)+,A0-A3/A6/D0-D7 ; restore registers
BEQ.S @1 ; br for retry <01Oct85>
MOVEQ #VolOffLinErr,D0 ; well, not much else to do . . . <01Oct85>
RTS ; <01Oct85>
@1 MOVE.W ioTrap(A0),D0 ; Pick up trap word again <01Oct85>
BLE.S FlushTrapAgain ; Go re-execute the original I/O trap <2> rb <SM1>
; (should we be using a signed branch?) <SM1>
; <SM1>
; Repeat a TFS trap: the word in ioTrap (copied into TrapAgain by now) usually <SM1>
; looks like 0mxx, where m contains the modifiers (,ASYNC and ,IMMED for TFS) <SM1>
; and xx is the TFS trap dispatch. TrapAgain must be changed to Ay60 and D0 <SM1>
; to $00xx. <SM1>
; <SM1>
TFSAgain: OR.B #$A0,TrapAgain ; Set up top nibble <SM1>
MOVE.B #$60,TrapAgain+1 ; Overwrite lower bytes w. TFS trap <SM1>
AND.W #$00FF,D0 ; Remove modifier bits from saved index <SM1>
; <SM1>
FlushTrapAgain ; <SM1>
MOVE.L D1,-(SP) ; save D1 for 020/030's <2> rb <SM1>
JSR ([jCacheFlush]) ; flush the cache <2> rb <SM1>
MOVE.L (SP)+,D1 ; restore D1 <2> rb <SM1>
JMP TrapAgain ; Go re-execute the original I/O trap <2> rb <SM1>
IF hasManEject THEN ; <SM8> <BH 03Aug93>
; This is now a subroutine so it can be used by the Desk Manager to get back dirty
; disks that have been manually ejected. It largely duplicates the old code.
; Inputs: A2 -> VCB of desired volume
; D4 == DS err ID for alert to be displayed
SwitchDisk
MOVEM.L D1-D3/A0-A1/A3-A4,-(SP) ; save regs
BSR MakeStkPB ; get ioPB space on stack
MOVEA.L A0,A3 ; A3 -> paramblock
SUBA.L #EvtBlkSize,SP ; stack space for evt record
MOVEA.L SP,A4 ; A4 -> evt buffer
MOVE.L #$004B006A,DSAlertRect ; set up alternate sys alert rect
MOVE.L #$00A50196,DSAlertRect+4 ; (high bit is also flag)
; all NEW, all BIGGER DSAlertRect! <SM9> <BH 27Aug93>
MOVEA.L FSVarsPtr,A0
BSET.B #fsNoAllocate,FSVars.fsFlags(A0) ; prevent new mounts
LEA vcbVN(A2),A1
MOVE.L A1,FSVars.dsRecoverNamePtr(A0) ; vol name for DS code
MOVEQ #1,D3 ; first time through, do draw alert at @getdisk
MOVEQ #2,D2 ; prepare disk-switch eject
MOVE.W vcbDrvNum(A2),D1 ; try to get the drive in which the vol was last seen
BNE.S @freeDrive
MOVE.W vcbDRefNum(A2),D1 ; offline vol's drive num is in DRefNum field
BPL.S @freeDrive ; positive if ejected-offline
NEG.W D1 ; negative if only offline
@freeDrive ; eject the disk in drive number D1, if any. D2 has "message" for EjectNotify--
; 1 for an FKEY eject, 2 for disk-switch.
MOVEA.L DrvQHdr+qHead,A0 ; Find drive queue element: get the first
@chkdrv CMP.W dqDrive(A0),D1 ; match?
BEQ.S @gotdrv ; yes: go check it out
MOVEA.L qLink(A0),A0 ; no: get next drive
MOVE.L A0,D0 ; any more?
BEQ.S @getdisk ; can't find the drive
BRA.S @chkdrv
@gotdrv BTST #dqManEjBit,dqInstall(A0) ; is this a manual eject drive?
BEQ.S @0 ; if so, the "Insert the disk" dialog will need to be
MOVEQ #1,D3 ; redrawn after ejection--set D3 to indicate this
@0 MOVEA.L jDoEject,A0
JSR (A0)
@getdisk TST.W D3 ; does the dialog need to be drawn?
BEQ.S @getevt
MOVE.W D4,D0 ; get DS code
_SysError ; draw it
MOVEQ #0,D3 ; flag it drawn
@getevt MOVE.W #128+8,D0 ; only disk-inserted/key down events interest us
MOVE.L A4,A0 ; event buffer
_GetOSEvent
BNE.S @getevt ; loop until we get one . . .
MOVE.L evtMessage(A4),D0 ; drive number or key
CMPI.W #diskInsertEvt,evtNum(A4) ; disk-insert event?
BEQ.S @dievt ; br if so <02Nov85> LAK
MOVE.W evtMeta(A4),D1 ; meta keys (for command bit)
CMP.B #$2E,D0 ; period?
BEQ.S @chkabort ; br if so <02Nov85> LAK
MOVEQ #$0B,D2 ; seek cmd, shift, not alphaLock, and option <02Nov85> LAK
LSR.W #8,D1 ; get high byte of meta-key info, clear D1.W hi byte <02Nov85> LAK
AND.B D1,D2 ; high byte of meta word contains mod bits <02Nov85> LAK
SUBQ.B #$03,D2 ; want cmd AND shift BUT NOT option <02Nov85> LAK
BNE.S @getevt ; if not so, no FKey action! <02Nov85> LAK
moveq.l #-'3',d1 ; prepare to convert ascii to binary <2.6>
add.b d0,d1 ; keyCode - '3' <2.6>
addq.b #3,d1 ; convert key to drivenum, range check <2.6>
bhs.s @getevt ; if >= '3', or < '0', not an eject req <2.6>
ext.w d1 ; drive number in D1.W <C150/10sep86><2.6>
bne.s @1 ; 1, 2 handled as is, <C150/10sep86>
moveq #3,D1 ; 0 becomes 3 (drive #3) <C150/10sep86><2.6>
@1 moveq #1,D2 ; flag from keyboard, <C150/10sep86>
BRA.S @freeDrive
@chkabort BTST #cmdKey,D1 ; command-. for abort? <02Nov85> LAK
BEQ.S @getevt ; keep waiting if not
BRA.S @aborted ; otherwise, let the user beware!
; D0 non-zero denotes abort . . .
@dievt MOVE.L D0,D1 ; get drive num in D1.W
SWAP D0
TST.W D0 ; is this a genuine insert event?
BNE.S @ejectevt ; no: it's some sort of ejection
MOVEA.L A3,A0 ; yes: get mountvol paramblock
MOVE.W D1,ioDrvNum(A0) ; drive to mount
_MountVol
BEQ.S @exitok ; success!
MOVEQ #2,D2 ; going to be a disk-switch eject
BRA.S @freeDrive ; wrong disk--go eject it and try again
@ejectevt CMP.W #-1,D0 ; is this an ejection request?
BEQ.S @1 ; yes: treat it like an FKEY
CMP.W vcbDRefNum(A2),D1 ; no: manual eject--is it the drive we expected the vol in?
BEQ.S @getevt ; yes: probably spurious, so drop it...that drive should be empty
; no: hmm, what to do...repost, deal with it later
SWAP D0 ; restore message
MOVEA.W #DiskInsertEvt,A0 ; event type
_PostEvent ; post it
BRA.S @getevt ; go back for another
@aborted MOVEQ #1,D3
BRA.S PostUpdate
@exitok MOVEQ #0,D3
; OK, we're basically done with the disk switched stuff.
; The code the saved the screen behind the dialog has been removed. <SM1>
PostUpdate ; <SM1>
BSR.S CleanDSErr ; cleanup code now a subroutine, for sharing
CLR.W DSErrCode ; don't freak out the Process Mgr
MOVEA.L FSVarsPtr,A0
BCLR.B #fsNoAllocate,FSVars.fsFlags(a0) ; new mounts are OK again
MOVE.W D3,D0 ; get result, set CC
ADDA.L #EvtBlkSize+IOVQElSize,SP ; clean that stack
MOVEM.L (SP)+,D1-D3/A0-A1/A3-A4 ; restore those registers
RTS
; Clean up the disk-switch error box--now a subroutine for sharing purposes.
; It is called from CmdDone after _Eject has been called for a manual-eject
; drive; CmdDone uses a DS alert to tell the user to take the disk out of the
; drive.
CleanDSErr
CLR.B DSWndUpdate ; flag GNE to remove the alert . . . <SM1>
PEA DSAlertRect ; union this in <SM1>
MOVE.L ExpandMem,a0 ; <SM1>
PEA ExpandMemRec.SysErrorUpdateRect(a0) ; into this rect <SM1>
move.l (sp),-(sp) ; do it in place <SM1> <SM4> rb
_UnionRect ; <SM1>
BSET #7, DSAlertRect ; return to old DS rect (also clears exclusion) <06Mar85>
; <removed reinstall of DskSwHook> <06Mar85>
RTS
ENDIF ; <SM8> <BH 03Aug93>
;
;________________________________________________________________
;
; Routine: vDoEject,DoEject
; Arguments:
; D1 = drive # to eject
; D2 = 1 for keyboard/eject button source,
; 2 for Disk Switch code hook
;
; calls EjectNotify function as:
;
; Function EjectNotify(drive:int;caller:int):boolean;
;
; if false is returned, the disk is not ejected;
; caller=1 for eject key, caller=2 for DS hook
;_______________________________________;
vDoEject ;this label for export only
DoEject
BSR MakeStkPB ; get a parameter block
MOVE.W D1,IODrvNum(A0)
MOVE.L EjectNotify,D0 ; notify proc?
BLE.S @1 ; br if not
MOVEM.L D2/A0-A2,-(SP)
CLR.W -(SP)
MOVE.W D1,-(SP) ; pass eject drive
MOVE.W D2,-(SP) ; 1=fkey eject, 2=ds hook eject
MOVE.L D0,A0 ; procedure pointer
JSR (A0) ; call it (it should preserve Pascal regs)
TST.B (SP)+ ; still want to eject?
MOVEM.L (SP)+,D2/A0-A2
BEQ.S @2 ; br if not
@1 _Eject ; get rid of it . . .
BEQ.S @2
MOVE.W #8,-(SP)
_SysBeep ; make a beep
@2 ADD #IOVQElSize,SP ; clean up stack and return
RTS
;-----------------------------------------------------------------
; Initialize the file system.
;
; D0 -> number of FCBs to allocate.
;
;-----------------------------------------------------------------
InitFS TST.W FSFCBLen ; are we in already?
BPL FSInitOK ; br if so
; first, announce the presence of TFS by publishing the FCB size:
MOVE.W #FCBEntLen,FSFCBLen ; Store size of TFS FCB there; non- -1 value means TFS is in
; next, zero the low-memory file system area
LEA FileVars,A0 ; initialize our lomem vars to 0
MOVEQ #(FSClrWdLen/2)-1,D1 ; esp. VCB, FS queue hdrs, params, FSBusy
@1 CLR.W (A0)+
DBRA D1,@1
MOVE.W #StrtDir,DRMstrBlk ; set up master block address
; get some memory for the FCBs
CMP.W #2,MemTop ; 128K machine? <25Oct85>
BLE.S @2 ; no multiplier for 128K <22Oct85>
LSL.W #2,D0 ; mult by 4 for 512K+ <25Oct85>
@2 MOVE D0,D2 ; save for WDCB allocation <25Oct85>
MULU #FCBEntLen,D0 ; number of bytes needed for FCBs <25Oct85>
ADDQ.W #2,D0 ; and 2 for length prefix <25Oct85>
MOVE.W D0,D1 ; and save in D1 <25Oct85>
_NewPtr ,SYS,CLEAR ; get buffer with D0 bytes in it.
BNE FSInitErr ; Stop execution on any errors
MOVE.W D1,(A0) ; first word is FCB part length
MOVE.L A0,FCBSPtr ; set the FCB pointer
; Set up a WDCB array with the same number of entries as the FCB array:
MULU #WDCBLen,D2 ; number of bytes needed for WDCBs <25Oct85>
MOVE.L D2,D0 ; <25Oct85>
ADDQ.W #2,D0 ; and 2 for length prefix <08Aug85>
MOVE.W D0,D1 ; and save in D1 <11Apr85>
_NewPtr ,SYS,CLEAR ; Allocate room for the WDCB array <11Apr85>
BNE FSInitErr ; Crash and burn on errors <11Apr85>
MOVE.W D1,(A0) ; Store length of WDCB array <11Apr85>
MOVE.L A0,WDCBsPtr ; Store pointer in lomem <11Apr85>
BigLEA WDCBSwOS,A2 ; point to offset to the WDCB entry <1.2>
MOVE.W (A2),A2 ; Get the offset to the WDCB entry <1.2>
ADD.L SwitcherTPtr,A2 ; Index into Switcher Table <1.2>
MOVE.L A0,(A2) ; Fill in entry for WDCB switch <A271><27Oct86><1.2>
NOT.L (A2)+ ; ... complement for long addresses <A271><27Oct86><1.2>
MOVE.W D1,(A2) ; <A271><27Oct86><1.2>
; Allocate a File System Stack:
MOVE.L #(HFSStkLen+HFSTmpSize),D0 ; Size of stack area <26Aug85><C206>
_NewPtr ,SYS,CLEAR ; Allocate space in system heap <11Apr85>
BNE FSInitErr ; Stop execution on any errors <11Apr85>
ADD #HFSStkLen,A0 ; Point beyond the end of the stack <25Oct85><C206>
MOVE.L A0,HFSStkTop ; Store pointer in lo-mem <11Apr85><C206>
MOVEQ #PMSPSize,D0 ; Size of Poor Man's Search Path <18Aug85>
_NewPtr ,SYS,CLEAR ; Allocate space for it <18Aug85>
BNE FSInitErr ; Punt on errors <18Aug85>
BigLEA PMSPSwOS,A2 ; point to offset to the PMSP entry <C152><1.2>
MOVE.W (A2),A2 ; Get the offset to the PMSP entry <C152><1.2>
ADD.L SwitcherTPtr,A2 ; Index into Switcher Table <C152><1.2>
MOVE.L A0,(A2) ; Fill in entry for PMSP hook switch <A271><27Oct86><1.2>
NOT.L (A2) ; ... complement for long addresses <A271><27Oct86><1.2>
ADDQ.L #SPHdrSize,A0 ; Point beyond PMSP header <18Aug85>
MOVEQ #(PMSPSize-SPHdrSize),D0 ; Get length of remaining table <18Aug85>
MOVE.W D0,(A0) ; Stash it at the start of the table <18Aug85>
MOVE.L A0,PMSPPtr ; Set up the lo-mem pointer <18Aug85>
; Set up the lomem system cache pointers: (hack in until new cache arrives . . .)
MOVE.W #512,D1 ; Set up cache block size <26Aug85>
MOVEQ #1,D0 ; Allocate 1-block bitmap cache <26Aug85>
Jsr InitCache ; Set up the cache <26Aug85><1.2>
BNE.S FSInitErr ; <26Aug85>
MOVE.L A1,SysBMCPtr ; Bitmap cache pointer. <26Aug85>
MOVEQ #1,D0 ; Allocate a 1-block volume cache <20Sep85>
CMP.W #2,MemTop ; 128K machine? <20Sep85>
BLE.S @4 ; br if so <20Sep85>
MOVEQ #2,D0 ; Allocate a 2-block volume cache <20Sep85>
@4 Jsr InitCache ; Set up the cache <20Sep85><1.2>
BNE.S FSInitErr ; <26Aug85>
MOVE.L A1,SysVolCPtr ; Volume cache pointer <26Aug85>
MOVEQ #4,D0 ; Allocate a small B*-Tree cache <04Nov85>
CMP.W #2,MemTop ; 128K machine? <27Aug85>
BLE.S @5 ; br if so <27Aug85>
MOVEQ #16,D0 ; Allocate a LARGE B*-Tree cache <20Sep85>
@5 Jsr InitCache ; Create a new cache <26Aug85><1.2>
BNE.S FSInitErr ; <26Aug85>
MOVE.L A1,SysCtlCPtr ; B*-Tree Control cache pointer <26Aug85>
; Set up a disk switch hook
LEA DSHook,A0 ; Point to the disk switch code <22Jul85>
MOVE.L A0,DskSwtchHook ; Make it available for use <22Jul85>
; Begin SuperMario
; allocate our file system variable block <SM1> FM
move.l FSVarsPtr,D0 ; has this been initialized?
cmp.l #-1,D0 ; $FFFF FFFF if not
bne.s FSInitOK ; initialized
move.l #FSVars.size, d0 ; d0 = size of file system variable block
_NewPtr sys, clear ; go get the block
bne FSInitErr ; die horribly if we don't get it
move.l a0, FSVarsPtr ; stash the address in lomem
move.w #FSVars.size, FSVars.length(a0) ; store length of block in 1st word
jsr FSGrowPatchInit ; FCBs, WDCBs and vectors
jsr QMInit ; initialize the Queue Manager
jsr DTDBMgrInit ; initialize desktop DB manager
jsr InstallVectors ; install the vectors that hang off ExpandMem
; End of SuperMario patch roll inÉ <SM@> FM
FSInitOK MOVEQ #0,D0 ; success!
RTS
FSInitErr MOVEQ #-1,D0 ; we failed
RTS
;_____________________________________________________________________________________
; <38>
; CountFCBs
;
; Function:
; Return the number of free FCBs
; Return the total number of FCBs
;
; Use d0 as a max number to count, to allow for callers to check for a
; specific quantity of free FCBs.
;
; Input:
; d0.w - requested # of free FCBs
;
; Output:
; d0.w - number of free FCBs (clipped to input value of d0)
; d1.w - total number of FCBs
;
; ccr - Z set if requested number were free
; Z clear if not
;
; Note: When called with d0.w = #-1, the output in d1 is the total number
; of FCBs that exist.
;
;_____________________________________________________________________________________
; This routine was copied FileMgrPatches.a <SM1>
CountFCBs
@Regs reg d2/a0/a1
movem.l @Regs,-(sp)
move.l FCBSPtr,a1 ; point to base of FCB array
moveq.l #0,d1 ; clear high word
move.w (a1),d1 ; grab length of the array
lea.l 2(a1),a0 ; point to base of 1st FCB
add.w d1,a1 ; point to end of FCB array
divu FSFCBLen,d1 ; d1 = number of FCBs
move.w d0,d2 ; copy limit value
@loop:
suba.w FSFCBLen,a1 ; point to beginning of previous FCB
tst.l (a1) ; is it free?
bne.s @notFree
subq.w #1,d2 ; tally the free FCB
beq.s @enough ; hit our quota?
@notFree:
cmpa.l a0,a1 ; are we done with the array?
bhi.s @loop ; as long as we're above the bottom now
@enough:
sub.w d2,d0 ; d0 = number of free FCBs
tst.w d2 ; d2 is zero if we hit our target
movem.l (sp)+,@Regs
rts
;_____________________________________________________________________________________
; <38>
; OpenAttemptHook
;
; Function:
; This procedure is called each time some sort of Open call (one that allocates
; an FCB) is attempted. We're here to schedule the FCB allocator if
; necessary. The FCB allocator is now run after the sync wait loop (on failed
; opens) and at _SynchIdleTime, although it could be run anytime moving memory
; is cool.
;
; Optimization:
; Since counting the number of free FCBs is time consuming, we use fsFCBCounter
; to hold the approximate number of free FCBs in excess of the fsFCBBurst amount.
; We conservatively assume that each time we attempt an open we use up an FCB. This
; is obviously wrong, since some opens fail and _Close frees up FCBs, but this
; will allow us to avoid our more expensive check most of the time. When the counter
; does hit zero we count the array and set fsFCBCounter back up. We also might set
; the fsNeedsFCBs value if there are too few FCBs around.
;
; Input:
; a0 - pointer to caller's PB
;
; Output:
; none
;_____________________________________________________________________________________
; This routine was copied FileMgrPatches.a <SM1>
OpenAttemptHook:
@regs reg d0/d1/a1
movem.l @regs,-(sp)
move.l FSVarsPtr,a1
with FSVars
btst.b #fsNoFCBExpansion,fsFlags(a1) ; are we in the ballgame?
bne.s @exit
sub.w #1,fsFCBCounter(a1) ; see if we need to check
bgt.s @exit ; no need to check if we're > 0
moveq.l #-1,d0 ; we want to know about all FCBs
bsr CountFCBs ; see how many there are
sub.w fsFCBBurst(a1),d0 ; do we have enough headroom?
bls.s @needMore ; need more if (#free) <= (burst amount)
move.w d0,fsFCBCounter(a1) ; remember the amount of slack
bra.s @exit
@needMore:
bset.b #fsNeedFCBs,fsFlags(a1) ; remind ourselves of our need
clr.w fsFCBCounter(a1) ; and make sure we check next time
@exit:
movem.l (sp)+,@regs
rts
;_____________________________________________________________________________________
; <38>
; AllocateFCBs
;
; Function:
; This is a private queued file system call which returns information
; about the FCB array and can allocate more FCBs.
;
; If a request for more FCBs is being made then AllocateFCBs must be
; called only when moving memory is legal. If the call is made for
; information only it can be made anytime.
;
; parameter block:
; ioFCBBurst offset $20, word, input requested burst headroom
; ioFCBGrow offset $22 word, input requested free if allocation triggered
; ioTotalFCBs offset $24 word, output returns number of FCBs present
; ioTotalFreeFCBs offset $26 word, output returns number of free FCBs
; ioFCBsAdded offset $2A, word, output returns number allocated this time
;
; Input:
; a0.l - pointer to PB
;
; Output:
; d0.w - #noErr if at least one FCB is free on exit.
; - #tmfoErr if no FCBs are free on exit
;
; AllocateFCBs always counts the total number of FCBs and the total number free. If there
; are ioFCBBurst FCBs free, no other work is performed. If there are fewer than ioFCBBurst
; FCBs free then AllocateFCBs will attempt to allocate enough new ones so that ioFCBGrow
; are free.
;
; ioFCBBurst and ioFCBGrow work together. ioFCBBurst is the number of opens that we'd
; like to be able to perform between visits to sync time. ioFCBGrow is the number that
; we'd like to have available when we go to the trouble of growing the array. ioFCBBurst
; must always be <= ioFCBGrow.
;
;_____________________________________________________________________________________
; This routine was copied FileMgrPatches.a <SM1>
AllocateFCBs
import MoreFCBs
bsr.s FSQueue ; Wait out turn
moveq.l #-1,d0 ; more FCBs than we'll ever have
bsr CountFCBs ; count all of them
move.w d0,ioTotalFreeFCBs(a0) ; remember how many are free
move.w d1,ioTotalFCBs(a0) ; remember how many there are
movea.l FSVarsPtr,a1
with FSVars
move.w ioFCBBurst(a0),d2 ; get the # we'd like to keep free
cmp.w d2,d0 ; see if we have that many free
bhs.s @noAllocate
move.w ioFCBGrow(a0),d2 ; d2 = the number of free FCBs we'd like to grow to
sub.w d0,d2 ; d2 = the number we need to grow to there
move.w fsFCBMax(a1),d3 ; d3 = the most FCBs we can have
sub.w d1,d3 ; d3 = the most we can grow
beq.s @noAllocate ; bail if we're out of array room
cmp.w d2,d3 ; can we grow as much as we want to?
bhs.s @grow ; if (most we can grow) >= (amount desired), we're OK
move.w d3,d2 ; otherwise, just grow as much as we can
@grow:
bsr MoreFCBs ; try to get the FCBs
beq.s @gotSome ; leave with a smile
asr.w #1,d2 ; try to get half that many
beq.s @noAllocate ; if we're down to zero, bail
bra.s @grow
@gotSome:
add.w d2,ioTotalFCBs(a0) ; update the total count
add.w d2,ioTotalFreeFCBs(a0) ; update the free count
move.w d2,ioFCBsAdded(a0) ; note the number added
bra.s @done
@noAllocate:
clr.w ioFCBsAdded(a0) ; we didn't add any new ones
@done:
tst.w ioTotalFreeFCBs(a0) ; check the number that are free now
beq.s @noFCBsAvailable ; if none are left, report the problem
moveq.l #noErr,d0 ; if some are left, we're happy
@exit: bra CmdDone ; And call it a day
@noFCBsAvailable:
moveq.l #tmfoErr,d0
bra.s @exit
endwith
;________________________________________________________________________________
; Routine: File System cleanup routine <2.7>
; Function: Closes all open files belong to the process upon process termination.
; The process serial number in the Ext. FCB is cleared.
;
; By: Kenny Tung
; Copyright © 1989 Apple Computer, Inc.
; Input: D1 = trap, A0 = parameter block pointer
; HFS call requires an ioPB, but in this call no parameter is passed in.
; However, A0 is used to make the PBClose call within the routine. (Therefore
; it should be at least 26 bytes long).
; Revision History:
; 26Sep89 KSCT New today (from TFSDir1.a)
;________________________________________________________________________________
DoFSCleanUp ; serial ID is 64 bits
FSCleanupRegs REG A2-A3/D2-D6
MOVEM.L FSCleanupRegs,-(SP)
; ask the Process Mgr which process is current
MOVE.L A0,-(SP) ; save needed, but volatile, register
LEA -10(SP),SP ; get current PSN and verify it's for us
PEA 2(SP) ; push address of PSN
_GetCurrentProcess ; call the OS
MOVE.W (SP)+,D0 ; save result
MOVE.L (SP)+,D6 ; D6 = process ID1
MOVE.L (SP)+,D2 ; D2 = process ID2
MOVEA.L (SP)+,A0 ; restore volatile register
TST.W D0 ; check result now that stack restored
BLT CleanupDone ; if so, we can do nothing
MOVEA.L FSVarsPtr,A1
MOVEa.L FSVars.fcbPBuf(A1),A2 ; A2=parallel array
MOVE cbPBufCount(A2),D3 ; D3=number of FCBs
SUBQ #1,D3 ; for DBcc
MOVE cbPBufULen(A2),D4 ; D4=ext. FCB unit size
LEA fcbPBufData(A2),A2 ; A2=ext. fcb array
MOVE FSFCBLen,D5 ; D5=FCB len
jsr Gt1stFCB ; A1=FCB, D1=1st RefNum
; First close all the open files belong to this process:
; A1=FCBptr, A2=Ext. FCBptr, D1.W=RefNum, D2=id2, D3.W=loop index,
; D4.W=ext FCBlen, D5.W=original FCBlen, D6=id1 (not D1!)
@cleanLoop MOVE.L xFCBPid2(A2),D0 ; do the 2nd one first
CMP.L D0,D2 ; FCB belongs to this process?
BNE.S @3 ; no->
MOVE.L xFCBPid1(A2),D0
CMP.L D0,D6 ; FCB belongs to this process?
BNE.S @3 ; no->
;; close the file only if it is open and not a system file.
MOVE.L fcbFlNm(A1,D1),D0 ; file open?
BEQ.S @2 ; not open -> invalidate PIDs
CMP.L #FSUsrCNID,D0 ; Is it a system control file?
BLO.S @2 ; yes, don't touch it
;; this open path belongs to this proc, let's close it
BSR clearPB ; clear iopb in A0
MOVE D1,ioRefNum(A0) ; close this access path
MOVEM.L A1/D1/D2,-(SP) ; these registers are trashed
_Close ,Async ; close the file ASYNCly (to avoid deadlock)
;; but we will wait synchronously until it's done .....
@wait TST ioResult(A0)
BGT.S @wait
MOVEM.L (SP)+,A1/D1/D2
BNE.S @3 ; if error don't clear IDs
@2 CLR.L xFCBPid1(A2) ; clear procID 1
CLR.L xFCBPid2(A2) ; clear procID 2
@3 ADDA D4,A2 ; go to next ext.FCB
ADD.W D5,D1 ; go to next FCB RefNum
DBF D3,@cleanLoop ; process them all É
;; Then close all the working direstories: D2.L/D6.L=procID, others are free
MOVEA.L FSVarsPtr,A1 ; FSVars
MOVEA.L FSVars.WDCBPBuf(A1),A2
MOVE cbPBufCount(A2),D3 ; D3=number of WDCBs
SUBQ #1,D3 ; for DBcc
MOVE cbPBufULen(A2),D4 ; D4=ext. WDCB unit size
LEA wdcbPBufData(A2),A2 ; A2=1st ext. WDCB array
MOVE #WDCBLen,D5 ; D5 = old WDCB len
jsr Gt1stWDCB ; A1=WDCB array, D1=WDRefNum
;; A1=WDCBptr, A2=Ext WDCB, D1.W=WD RefNum, D2=id2, D3.W=loop index,
;; D4.W=ext wdcblen, D5.W= orginal WDCBlen, D6=id1
@WDLoop MOVE.L xWDCBPid2(A2),D0
CMP.L D0,D2 ; same process?
BNE.S @6 ; no->
MOVE.L xWDCBPid1(A2),D0
CMP.L D0,D6 ; WDCB belongs to this process?
BNE.S @6 ; no->
TST.L WDVCBPtr(A1,D1) ; WD open?
BEQ.S @5 ; no-> already closed
BSR.S clearPB ; clear iopb
MOVEM.L A1/D1/D2,-(SP) ; these registers are trashed
ADD.W #WDRfnMin,D1 ; Offset the index to make a WDRefNum (-32767)
MOVE D1,ioVRefNum(A0) ; close this WD
_CloseWD
MOVEM.L (SP)+,A1/D1/D2
BNE.S @6 ; if error don't clear IDs
@5 CLR.L xWDCBPid1(A2) ; clear procID 1
CLR.L xWDCBPid2(A2) ; clear procID 2
@6 ADDA D4,A2 ; go to next ext.WDCB
ADD.W D5,D1 ; go to next WDCB RefNum
DBF D3,@WDLoop ; process them all É
BSR.S clearPB ; all done, return a clear PB
CleanupDone
MOVEM.L (SP)+,FSCleanupRegs
MOVEQ #0,D0 ; happy ending
RTS
; clear iopb in A0 up to ioRefnum. (28 bytes), A3 is free
clearPB MOVEA.L A0,A3 ; A3=A0=iopb
MOVEQ #(fscPBLen/4)-1,D0 ; iopb len in long -1
@2 CLR.L (A3)+
DBRA D0,@2 ; clear 28 bytes
RTS
; __________________________________________________________________________________
; InstallVectors
;
; Function:
; Attach ourselves to the appropriate vectors.
;
; For fsQueueHook, ExtFSHook and jFileOpen we selfishly insist that
; we're the first piece of code hooked in so that we can assume
; that we're the last one called.
;
; __________________________________________________________________________________
InstallVectors
; slam onto fsQueueHook, ExtFSHook and jFileOpen
Import fsQueueHookPatch,ExtFSHookPatch
Lea fsQueueHookPatch, a0 ; our patch address
move.l a0, fsQueueHook ; be the first ones
Lea ExtFSHookPatch, a0 ; our patch address <38>
move.l a0, ExtFSHook ; be the first ones <38>
; install some vectors:
move.l ExpandMem, a1
lea vSyncWait, a0 ; get addr of syncwait (in this fsQueueHook patch)
move.l a0, ExpandMemRec.jSyncWait(a1)
lea vAfterFSQHook, a0 ; get addr just past call to fsQueueHook (in fsQueueHook patch)
move.l a0, ExpandMemRec.jAfterFSQHook(a1)
lea CmdDone, a0 ; get addr of CmdDone
move.l a0, ExpandMemRec.jCmdDone(a1)
lea fsGeneralWakeUp, a0 ; get addr of general purpose File System kickstart
move.l a0, ExpandMemRec.jDispatchNext(a1)
lea fsSCSIFreeHookProc, a0 ; get addr of File System SCSI Busy deferral completion
move.l a0, ExpandMemRec.jSCSIFreeHook(a1)
rts
;__________________________________________________________________________________
;
; Initialize FCB expansion patch, WDCB expansions patch, and vectors
;__________________________________________________________________________________
; Roll into SuperMario <SM1> fm
FSGrowPatchInit:
; allocate the FCB parallel array
movea.L FCBSPtr,a1 ; a1 = address of main FCB array
moveq #0,d0 ; clear d0 for long calc
move.w (a1),d0 ; bytes in FCB array and header
divu.w FSFCBLen,d0 ; divide by element size to get count of FCBs
andi.l #$FFFF,d0 ; clear d0 top word set by divu
move.w d0,d1 ; Save # of FCBs in d1
lsl #L2ExtFCBLen,d0 ; d0 = total size of the parallel array
addq #fcbPBufData,d0 ; include info words
_NewPtr sys, clear ; Allocate buffer for FCBs
bne.s GrowErrExit ; Any errors are fatal
; initialize parallel FCB array header and install the array in FSVars
move.w d1,cbPBufCount(a0) ; first word = count
move.w #ExtFCBLen,cbPBufULen(a0) ; second word = unit size
movea.L FSVarsPtr,a1 ; save array address in FSVars
move.l a0,FSVars.FCBPBuf(a1) ; now we're ready to record file opens!
; allocate the WDCB parallel array
move.l WDCBSPtr,a1 ; a1 = address of main WDCB array
moveq #0,d0 ; clear d0 for long calc
move.w (a1),d0 ; length of WDCB array
divu.w #WDCBLen,d0 ; divide by element size to get count of WDCBs
andi.l #$FFFF,d0 ; clear d0 top word
move.w d0,d1 ; Save # of WDCBs in d1
lsl #L2ExtWDCBLen,d0 ; d0 = total size of the parallel array
addq #wdcbPBufData,d0 ; include info words
_NewPtr sys, clear ; Allocate buffer for FCBs
bne.s GrowErrExit ; Any errors are fatal
; initialize parallel WDCB array header and install the array in FSVars
move.w d1,cbPBufCount(a0) ; first word = count
move.w #ExtWDCBLen,cbPBufULen(a0) ; second word = unit size
movea.L FSVarsPtr,a1 ; save array address in FSVars
move.l a0,FSVars.WDCBPBuf(a1) ; now we're ready to record _OpenWDs!
; initialize FCB expansion mechanism <38>
movea.l FSVarsPtr,a1
move.w #fsDesiredFCBBurst,FSVars.fsFCBBurst(a1)
move.w #fsDesiredFCBFree,FSVars.fsFCBGrow(a1)
clr.w FSVars.fsFCBCounter(a1) ; make us check on the next open
move.w #$7fff,d0 ; max signed int is all we can have for the FCB array
ext.l d0 ; divide takes a long input
divs fsFCBLen,d0 ; d0 = max # of FCBs
move.w d0,FSVars.fsFCBMax(a1)
rts
GrowErrExit:
MOVEQ #dsMemFullErr,D0 ; no mem
_SysError
;________________________________________________________________________________
;
; Routine: GetVolParms
;
; Input: a0 - pointer to user's param block
; Output: d0 - result code
;
; Function: Return a version 2 GetVolParms param block
;
; Interesting problems with GetVolParms (which aren't important enough to cause
; us to make a change this close to 7.0 final. Obviously, if you're reading this
; after 7.0 final, please make these changes for the good of humanity. You should find
; these written up in the BRC).
; 2) The suba.w @VolParmsBufferSize,a6 instruction needs to be changed to a long subtract.
; What happens now is that zero is subtracted from a6, but the size of the saved registers
; happens to be bigger than the buffer, so there's enough room on the stack. Since the File
; Manager happens to save registers before dispatching, the fact that GetVolParms trashes
; the registers is unimportant. Thus, the three parallel changes are to get rid of the
; regster save/restore, change the suba.w to a suba.l, and add an adda.l at the bottom of
; the routine to deallocate the buffer.
;
;________________________________________________________________________________
; Roll in for SuperMario. Fix up the
GetVolParms:
@GetVolRegs reg d2/d3/a1-a4
; <SM1> FM bclr #asyncTrpBit, ioTrap(a0) ; force synchronous (wrong. See note, above)
jsr FSQueue ; Patiently wait our turn in line
; <SM1> FM movem.l @GetVolRegs, -(a6) ; save regs on FS stack
suba.l @VolParmsBufferSize, a6 ; <SM1> FM allocate a GetVolParms buffer on the stack
;
; Find the VCB in question:
;
jsr DtrmV3 ; find vol using ioNamePtr & ioVRefNum (D023/A234 trashed)
bne.s @GetVolParmsExit ; (DtrmV3 puts VCBPtr in A2)
tst.w vcbFSID(a2) ; Check: external file system? (¥¥ TFSVCBTst?)
beq.s @ForUs ; If zero, it's HFS.
;
; This call is for an External File System volume:
;
moveq #extFSErr, d0 ; Tell the world
bra.s @GetVolParmsExit ; and let them worry about it
;
; This call is for us. First, make a modifiable copy of the return buffer.
;
@ForUs:
movea.l a0, a4 ; move user's pb to a safe register
move.l @VolParmsBufferSize, d0 ; d0 = size of GetVolParms' ioBuffer
movea.l a6, a1 ; onto our stack buffer
lea.l @HFSVolParmsBuffer, a0 ; copy the static values for HFS volumes
cmp.w #SigWord,vcbSigWord(a2) ; is this an MFS volume?
bne.s @notMFS ; no, skip the following
lea.l @MFSVolParmsBuffer, a0 ; copy the static values for MFS volumes
@notMFS:
_BlockMove
bsr CheckDesktopSupport ; returns zero clear if support, set if none
beq.s @NoDTSupport ; z set means no support
move.l vmAttrib(a6), d0 ; get the attributes word
bset.l #bHasDesktopMgr, d0 ; set the bit indicating support
move.l d0, vmAttrib(a6) ; put the modified word back in the buffer
@noDTSupport:
;
; The buffer on the stack reflects the correct values for this volume.
; Copy back as much of it as the caller gave us room.
;
move.l ioReqCount(a4), d0 ; get user's buffer size
cmp.l @VolParmsBufferSize, d0 ; is it smaller than our buffer?
bls.s @NoClip ; then just return that amount
move.l @VolParmsBufferSize, d0 ; clip the return to just the size of our data
@noClip:
move.l d0, ioActCount(a4) ; tell'em how much we're copying
move.l a6, a0 ; copy from our stack buffer
move.l ioBuffer(a4), a1 ; copy into the user's pb buffer
_BlockMove
@GetVolParmsExit:
adda.l @VolParmsBufferSize, a6 ; <SM1> FM deallocate a GetVolParms buffer on the stack
;<SM1> fm movem.l (a6)+, @GetVolRegs ; restore regs
jmp CmdDone ; Go home
; This buffer contains the appropriate values for local HFS volumes.
@HFSVolParmsBuffer:
dc.w 2 ; this is a version 2 getvolparms
dc.l localvMAttribs ; static set of local attribute bits
dc.l 0 ; no local window handle
dc.l 0 ; no server address
dc.l localVolGrade ; standard volume grade
dc.w 0 ; local volumes don't support alt priv models
@VolParmsBufferSize:
dc.l *-@HFSVolParmsBuffer
; This buffer contains the appropriate values for local MFS volumes.
@MFSVolParmsBuffer:
dc.w 2 ; this is a version 2 getvolparms
dc.l 0 ; no optional calls supported for MFS volumes
dc.l 0 ; no local window handle
dc.l 0 ; no server address
dc.l localVolGrade ; standard volume grade
dc.w 0 ; local volumes don't support alt priv models
; .NoList
INCLUDE 'TFSCommon.a' ; Common subroutines w. TFSUtil
INCLUDE 'TFSVol.a' ; TFS volume level routines
INCLUDE 'MFSVol.a' ; MFS-specific volume level stuff
INCLUDE 'TFSDir1.a' ; include routines using filenames
INCLUDE 'MFSDir1.a' ;
INCLUDE 'TFSDir2.a' ;
INCLUDE 'MFSDir2.a' ;
INCLUDE 'TFSDir3.a' ;
INCLUDE 'MFSDir3.a' ;
INCLUDE 'TFSRfN1.a' ; include routines using refnums
INCLUDE 'MFSRfN1.a' ;
INCLUDE 'TFSRfN2.a' ;
INCLUDE 'MFSRfN2.a' ;
INCLUDE 'TFSRfN3.a' ;
INCLUDE 'MFSRfN3.a' ;
******************************************************************************************
* some lucky person gets to roll the following file into the rest of the sources
INCLUDE 'FileMgrHooks.a'
******************************************************************************************
END
Reference in New Issue View Git Blame Copy Permalink