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|
TITLE CHKPROC2 - PART2 Procedures called from chkdsk
page ,132 ;
.xlist
include chkseg.inc ;an005;bgb
INCLUDE CHKCHNG.INC
INCLUDE DOSSYM.INC
INCLUDE CHKEQU.INC
INCLUDE CHKMACRO.INC
include pathmac.inc
CONST SEGMENT PUBLIC PARA 'DATA'
EXTRN FIXMES_ARG:word ;an049;bgb
EXTRN FATAL_ARG:word
EXTRN BADW_ARG:word,FATAL_END:word
EXTRN badrw_num:word,BADRW_STR:WORD,HAVFIX:byte
EXTRN DIRTYFAT:byte,CROSSCNT:dword,DOFIX:byte,SECONDPASS:byte
EXTRN BADSIZ:word,ORPHSIZ:word,ORPHFCB:byte
EXTRN HECODE:byte,USERDIR:byte,FRAGMENT:byte
EXTRN ORPHEXT:byte,ALLDRV:byte,FIXMFLG:byte,DIRCHAR:byte
EXTRN EOFVAL:word,BADVAL:word
extrn fTrunc:BYTE
CONST ENDS
DATA SEGMENT PUBLIC PARA 'DATA'
extrn fatcnt:byte, orph_arg:word ;an005;bgb;an049;bgb
EXTRN THISDPB:dword,NUL_ARG:byte
EXTRN NAMBUF:byte,SRFCBPT:word,FATMAP:word
EXTRN MCLUS:word,CSIZE:byte,SSIZE:word
EXTRN DSIZE:word,ARG_BUF:byte,ERRCNT:byte
EXTRN USERDEV:byte,HARDCH:dword,CONTCH:dword
EXTRN ExitStatus:Byte,Read_Write_Relative:Byte
extrn bytes_per_sector:word ;an005;bgb
extrn fattbl_seg:word, fatsiz:word, paras_per_fat:word ;an005;bgb
extrn fatmsg1:word ;an024;bgb
extrn fatmsg2:word ;an024;bgb
EXTRN dbcs_vector:byte ;an055;bgb
EXTRN dbcs_vector_off:word ;an055;bgb
EXTRN dbcs_vector_seg:word ;an055;bgb
DATA ENDS
CODE SEGMENT PUBLIC PARA 'CODE'
ASSUME CS:DG,DS:DG,ES:DG,SS:DG
EXTRN PRINTF_CRLF:NEAR,FCB_TO_ASCZ:NEAR
EXTRN PROMPTYN:NEAR,DIRPROC:NEAR
EXTRN DOCRLF:NEAR,UNPACK:NEAR,PACK:NEAR
EXTRN CHECKNOFMES:NEAR
EXTRN multiply_32_bits:near ;an047;bgb
extrn nowrite:near, done:near, pack:near, unpack:near
extrn promptrecover:near, findchain:near
public RECOVER, DoAsk
public MAKORPHNAM, NAM0, NAMMADE
public GETFILSIZ, NCLUS, GOTEOF, CHKCROSS, RET8
public FATAL, hav_fatal_arg, INT_23, RDONE
public Systime ;an005;bgb
public int_24 ;an005;bgb
public CHECK_DBCS_CHARACTER ;an055;bgb
.list
pathlabl chkproc2
;*****************************************************************************
; RECOVER -
; free orphans or do chain recovery. Note that if we have NOT been able to
; process the entire tree (due to inability to CHDIR), we temporarily set
; DoFix to FALSE, do the operation, and then reset it.
;
; inputs: si - total number of clusters
; es - points to fatmap
;
; outputs: orphaned clusters are converted to files
; LOGIC
; - display dont fix msg if appropriate
; - display number of lost clusters
; - ask the user if he wants the chains converted to files
;***************************************************************************
RECOVER:
mov al,1
xchg al,[fixmflg]
or al,al
; $IF Z ; where there any errors found?
JNZ $$IF1
cmp [dofix],0 ; yes - is the /f flag off?
; $IF Z ; yes - display the dont fix msg
JNZ $$IF2
mov dx,offset dg:FIXMES_arg
CALL PRINTf_crlf
call DoCRLF ; ;AN000;
; $ENDIF
$$IF2:
; $ENDIF
$$IF1:
CALL DOCRLF
CHAINREPORT:
;;;;mov si,orphsiz ;get number of bad clusters found (recover) ;an005;bgb;an049;bgb
;;;;mov [orph_num],si ; Prints "XXX lost clusters found in YYY chains.";an049;bgb
call findchain ; On entry SI is the XXX value and the YYY value is
mov dx,offset dg:orph_arg ; in orphan-count.
call printf_crlf
TEST fTrunc,-1
; $IF NZ
JZ $$IF5
XOR AX,AX ; We have truncated the scan. Set DoFix to FALSE,
XCHG AL,DoFix ; do the operation and then restore things.
PUSH AX
CALL PromptRecover
POP AX
MOV DoFix,AL
DoAsk:
; $ELSE
JMP SHORT $$EN5
$$IF5:
CALL PromptRecover
; $ENDIF
$$EN5:
return
;*****************************************************************************
;*****************************************************************************
MAKORPHNAM:
PUSH SI
MOV SI,OFFSET DG:ORPHEXT - 1
NAM0:
INC BYTE PTR [SI]
CMP BYTE PTR [SI],'9'
JLE NAMMADE
MOV BYTE PTR [SI],'0'
DEC SI
JMP NAM0
NAMMADE:
POP SI
RET
;*****************************************************************************
; GETFILSIZ - calculate the file size based on the number of clusters.
;
; WARNING!! NOTE!! -->
;
; called by - PROCEDURE NAME
;
; inputs: AX -
; BX -
; CX -
; DX -
; SP -
; BP -
; SI - conatins the starting cluster number
; DI -
; DS -
; ES -
;
; output: AX - low word of the file size
; BX -
; CX -
; DX - hi word of the file size
; SP -
; BP -
; SI -
; DI -
; DS -
; ES -
;
; Regs abused - none
;
;logic: 1. save bx & cx for 32 bit mul
;
; 2. zero out file size results
;
; 3. do for all clusters:
;
; 4. get the next one and inc cluster counter
;
; 5. multiply clusters times sectors per cluster to give
; number of sectors in file. This can be a 2 word value - DX:AX.
;
; 6. multiply the sectors times the number of bytes per sector. This
; yields the number of bytes in the file.
;*****************************************************************************
;SI is start cluster, returns filesize as DX:AX
Procedure getfilsiz,near
savereg <bx,cx>
XOR AX,AX ;zero out low word
XOR DX,DX ;zero out high word
OR SI,SI ;did we get a zero cluster?
; $if NZ
JZ $$IF8
; $DO ;do for all clusters
$$DO9:
NCLUS: CALL UNPACK ;find the next cluster
XCHG SI,DI ;put output into input for unpack
INC AX ;found another cluster
CMP SI,[EOFVAL] ;did we find last cluster?
; $leave ae ;yes, so exit loop
JAE $$EN9
;;;;;;;CMP SI,2
;;;;;;;JAE NCLUS
; $enddo
JMP SHORT $$DO9
$$EN9:
GOTEOF:
MOV BL,[CSIZE] ;get sectors per cluster
XOR BH,BH
MUL BX ;clusters * secs/cluster = sectors
mov bx,dx ;get high num for 32bit mult
mov cx,ssize ;cx = word to mult with
call multiply_32_bits ;mul bx:ax * cx
mov dx,bx ;save high word
; $endif
$$IF8:
restorereg <bx,cx>
return
EndProc getfilsiz
;*****************************************************************************
;*****************************************************************************
Public Chkcross
CHKCROSS:
;Check for Crosslinks, do second pass if any to find pairs
MOV SI,word ptr CROSSCNT
cmp word ptr crosscnt,0 ;if there is at least one crossed
; $if nz,or
JNZ $$LL13
cmp word ptr crosscnt+2,0
; $if nz
JZ $$IF13
$$LL13:
CALL DOCRLF ;display another line
MOV SecondPass,True ; ; ;AC000;
XOR AX,AX ;
PUSH AX
PUSH AX
CALL DIRPROC ;Do it again
; $endif
$$IF13:
RET8: RET
;*****************************************************************************
;*****************************************************************************
FATAL:
;Unrecoverable error
mov dx,offset dg:FATAL_arg
mov [fatmsg1],bx ;an024;bgb
cmp byte ptr [nul_arg],0
jnz hav_fatal_arg
mov [fatmsg2],offset dg:fatal_end
hav_fatal_arg:
CALL PRINTf_crlf
MOV DL,[USERDEV] ;At least leave on same drive
DOS_Call Set_Default_Drive ; ;AC000;
;MOV AH,EXIT
mov ExitStatus,Bad_Exit ;Get return code ;AC000;
;INT 21H
ret ;Ret Main_Init for common exit
;*****************************************************************************
;*****************************************************************************
iNT_24 PROC FAR
aSSUME DS:NOTHING,ES:NOTHING,SS:NOTHING
PUSHF
push ax ;Save AX register ;AN000;
test al,Disk_Error ;Is it a disk critical err?
; $IF Z ;Yes
JNZ $$IF15
mov ax,di ;Get error (DI low) ;AN000;
cmp al,Write_Protect ;Special case errors ;AN000;
; $IF E,OR ;If write protect or ;AN000;
JE $$LL16
cmp al,Drive_Not_Ready ; if drive not ready ;AN000;
pop ax ;Balance stack again ;AN000;
; $IF E ; ;AN000;
JNE $$IF16
$$LL16:
CALL dword ptr HardCh ; let parent's handler decide what to do
; $ELSE ;Other error ;AN000;
JMP SHORT $$EN16
$$IF16:
pop ax ;balance stack ;AN000;
mov al,Critical_Error_Fail ;Fail the operation ;AN000;
; $ENDIF ; ;AN000;
$$EN16:
; $ELSE ;Not disk error
JMP SHORT $$EN15
$$IF15:
CALL dword ptr HardCh ; let parent's handler decide what to do
; $ENDIF
$$EN15:
CMP AL,2 ;Abort? ;AC000;
; $IF E ;Yes ;AC000;
JNE $$IF21
STI ;Turn off Interrupts
CALL DONE ;Forget about directory, restore users drive
mov ExitStatus,Bad_Exit ;Get return code ;AN000;
; $ENDIF ;AN000;
$$IF21:
IRET
iNT_24 ENDP
;*****************************************************************************
;*****************************************************************************
INT_23 proc far
STI
LDS DX,[HARDCH]
mov al,24h ; ;AC000;
DOS_Call Set_Interrupt_Vector ; ;AC000;
LDS DX,cs:[CONTCH] ;ac039;bgb
mov al,23h ; ;AC000;
DOS_Call Set_Interrupt_Vector ; ;AC000;
PUSH CS
POP DS
ASSUME DS:DG
MOV [FRAGMENT],0
RDONE:
CALL NOWRITE ;Restore users drive and directory
;MOV AH,EXIT
;MOV AL,0FFH
;INT 21H
mov ExitStatus,Bad_Exit ;Get return code ;AC000;
stc
ret ;Ret for common exit ;AN000;
int_23 endp
;*****************************************************************************
;*****************************************************************************
;
; Systime returns the current date in AX, current time in DX
; AX - HHHHHMMMMMMSSSSS hours minutes seconds/2
; DX - YYYYYYYMMMMDDDDD years months days
;
public Systime
Systime:
DOS_Call Get_Time ; ;AC000;
SHL CL,1 ;Minutes to left part of byte
SHL CL,1
SHL CX,1 ;Push hours and minutes to left end
SHL CX,1
SHL CX,1
SHR DH,1 ;Count every two seconds
OR CL,DH ;Combine seconds with hours and minutes
MOV DX,CX
PUSH DX ; Save time
;
; WARNING! MONTH and YEAR must be adjacently allocated
;
DOS_Call Get_Date ; ;AC000;
SUB CX, 1980
MOV AX, CX
MOV CL, 4
SHL AL, CL ; Push year to left for month
OR AL, DH ; move in month
MOV CL,4
SHL AX,CL ;Push month to left to make room for day
SHL AX,1
OR AL, DL
POP DX ; Restore time
XCHG AX, DX ; Switch time and day
return
;***************************************************************************** ;an055;bgb
;Routine name: Check_DBCS_CharACter ;an055;bgb
;***************************************************************************** ;an055;bgb
; ;an055;bgb
;Description: Check if specified byte is in rANges of DBCS vectors ;an055;bgb
; ;an055;bgb
;Called Procedures: None ;an055;bgb
; ;an055;bgb
;ChANge History: Created 6/12/87 MT ;an055;bgb
; ;an055;bgb
;Input: AL = CharACter to check for DBCS lead charACter ;an055;bgb
; DBCS_Vector = YES/NO ;an055;bgb
; ;an055;bgb
;Output: CY set if DBCS charACter ;an055;bgb
; DBCS_VECTOR = YES ;an055;bgb
; ;an055;bgb
; ;an055;bgb
;Psuedocode ;an055;bgb
;---------- ;an055;bgb
; Save registers ;an055;bgb
; IF DBCS vector not found ;an055;bgb
; Get DBCS environmental vector (INT 21h ;an055;bgb
; Point at first set of vectors ;an055;bgb
; ENDIF ;an055;bgb
; SEARCH ;an055;bgb
; LEAVE End of DBCS vectors ;an055;bgb
; EXITIF CharACter > X1,AND (X1,Y1) are environment vectors ;an055;bgb
; EXITIF CharACter < Y1 ;an055;bgb
; STC (DBCS charACter) ;an055;bgb
; ORELSE ;an055;bgb
; Inc pointer to next set of vectors ;an055;bgb
; ENDLOOP ;an055;bgb
; CLC (Not DBCS charACter) ;an055;bgb
; ENDSRCH ;an055;bgb
; Restore registers ;an055;bgb
; ret ;an055;bgb
;***************************************************************************** ;an055;bgb
DBCS_Vector_Size equ 2 ;an055;bgb
end_of_vector equ 0 ;an055;bgb
Procedure Check_DBCS_Character ; ;an055;bgb
push ds ;Save registers ;an055;bgb
push si ; " " " " ;an055;bgb
push ax ; " " " " ;an055;bgb
;;;;;;;;push ds ; " " " " ;an055;bgb
;;;;;;;;pop es ;Establish addressability ;an055;bgb
cmp byte ptr es:DBCS_VECTOR,Yes ;Have we set this yet? ;an055;bgb
; $IF NE ;Nope ;an055;bgb
JE $$IF23
push ax ;Save input charACter ;an055;bgb
mov al,0 ;Get DBCS environment vectors ;an055;bgb
DOS_Call Hongeul ; " " " " ;an055;bgb
mov byte ptr es:DBCS_VECTOR,YES ;Indicate we've got vector ;an055;bgb
mov es:DBCS_Vector_Off,si ;Save the vector ;an055;bgb
mov ax,ds ; ;an055;bgb
mov es:DBCS_Vector_Seg,ax ; ;an055;bgb
pop ax ;Restore input charACter ;an055;bgb
; $ENDIF ; for next time in ;an055;bgb
$$IF23:
mov si,es:DBCS_Vector_Seg ;Get saved vector pointer ;an055;bgb
mov ds,si ; ;an055;bgb
mov si,es:DBCS_Vector_Off ; ;an055;bgb
; $SEARCH ;Check all the vectors ;an055;bgb
$$DO25:
cmp word ptr ds:[si],End_Of_Vector ;End of vector table? ;an055;bgb
; $LEAVE E ;Yes, done ;an055;bgb
JE $$EN25
cmp al,ds:[si] ;See if char is in vector ;an055;bgb
; $EXITIF AE,AND ;If >= to lower, ANd ;an055;bgb
JNAE $$IF25
cmp al,ds:[si+1] ; =< thAN higher rANge ;an055;bgb
; $EXITIF BE ; then DBCS charACter ;an055;bgb
JNBE $$IF25
stc ;Set CY to indicate DBCS ;an055;bgb
; $ORELSE ;Not in rANge, check next ;an055;bgb
JMP SHORT $$SR25
$$IF25:
add si,DBCS_Vector_Size ;Get next DBCS vector ;an055;bgb
; $ENDLOOP ;We didn't find DBCS char ;an055;bgb
JMP SHORT $$DO25
$$EN25:
clc ;Clear CY for exit ;an055;bgb
; $ENDSRCH ; ;an055;bgb
$$SR25:
pop ax ;Restore registers ;an055;bgb
pop si ; " " " " ;an055;bgb
pop ds ;Restore data segment ;an055;bgb
ret ; ;an055;bgb
Check_DBCS_CharACter endp ; ;an055;bgb
pathlabl chkproc2
CODE ENDS
END
|
