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|
.xlist ;AN000;
include dosseg.asm ;AN000;
CODE SEGMENT BYTE PUBLIC 'CODE' ;AN000;
ASSUME CS:DOSGROUP, SS:DOSGROUP ;AN000;
.xcref ;AN000;
include dossym.inc ;AN000;
include devsym.inc ;AN000;
include doscntry.inc ;AN000;
.cref ;AN000;
.list
StackSize = 180h ; gross but effective
i_need VERFLG ; verify status flag ;AN000;
i_need CNTCFLAG ; break status flag ;AN000;
i_need CPSWFLAG ; CP switch logic ON/OFF ;AN000;
I_need CURRENTPDB,WORD ; Current process identifier ;AN000;
I_need HIGH_SECTOR,WORD ;AN000;
I_need BUF_HASH_COUNT,WORD ;AN000;
I_need FAILERR,WORD ;AN000;
I_need USER_ID,WORD ;AN000;
I_need CALLDEVAD,DWORD ; ;AN000;
I_need SYSINITVAR,WORD ;AN000;
I_need MYNAME,16 ; NetBIOS name ;AN000;
I_need RETRYCOUNT,WORD ; retry count ;AN000;
I_need COUNTRY_CDPG,BYTE ;AN000;
i_need DAY,BYTE ; date ;AN000;
i_need MONTH,BYTE ;AN000;
i_need YEAR,WORD ;AN000;
i_need CURBUF,DWORD ;AN000;
i_need IFS_DRIVER_ERR,WORD ;AN000;
i_need DOS34_FLAG,WORD ; IFS function Read/Write flag ;AN000;
i_need Callback_SS,WORD ; ;AN000;
i_need Callback_SP,WORD ;AN000;
i_need SaveBX,WORD ;AN000;
i_need Temp_Var,WORD ;AN000;
i_need INDOS,BYTE ;AN000;
i_need DskStack,BYTE ;AN000;
i_need IOStack,BYTE ;AN000;
i_need Callback_flag,BYTE ;AN000;
DOSINFO STRUC ;AN000;
bsize dw 0 ;AN000;
files dw 0 ;AN000;
fcbs1 dw 0 ;AN000;
fcbs2 dw 0 ;AN000;
buffers dw 0 ;AN000;
dw 0 ;AN000;
lastdrv dw 0 ;AN000;
secsize dw 0 ;AN000;
DosInfo ENDS ;AN000;
extrn ABSDRD:NEAR ;AN000;
extrn ABSDWRT:NEAR ;AN000;
extrn READTIME:NEAR ;AN000;
extrn CHECKFLUSH:NEAR ;AN000;
extrn GETCURHEAD:NEAR ;AN000;
;******************************************************************************
; *
; * MODULE: IFS_DOSCALL
; *
; * FUNCTION: IFS to DOS function request dispatcher
; *
; * FUNCTION: This procedure dispatches the IFS DOS service requests
; * by calling various DOS service routines
; *
; * CALLING SEQUENCE:
; *
; * CALL DWORD PTR IFS_DOSCALL@
; *
; *
; * RETURN SEQUENCE:
; *
; * If AX = 0 No error
; *
; * If AX <> 0 Error
; * AX = Error Code:
; *
; *
; * INTERNAL REFERENCES: None
; *
; *
; * EXTERNAL REFERENCES: STRATEGY, INTERRUPT, ABSDRD, ABSDWRT,
; * FIND_SECTOR, MARK_SECTOR, WRITE_BUFFR,
; * READ_BUFFR, WRITE_BUFFR, FREE_BUFFR,
; * GET_DOS_INFO, FLUSH_BUFF
; *
; * NOTES: None
; *
; * REVISION HISTORY: New
; *
; * COPYRIGHT: "MS DOS IFS Function"
; * "Version 1.00 (C) Copyright 1988 Microsoft Corporation"
; * "Licensed Material - Program Property of Microsoft"
; *
; *************************************************************************
PROCEDURE IFS_DOSCALL,FAR ;AN000;
assume DS:NOTHING,ES:NOTHING ;AN000;
CLI ; ;AN000;
CMP AH,39 ; ;AN000;
JNZ others ; ;AN000;
INC CS:[INDOS] ; in DOS ;AN000;
JMP Dosend ; ;AN000;
others:
CMP AH,40 ; ;AN000;
JNZ others2 ; ;AN000;
DEC CS:[INDOS] ; out DOS ;AN000;
JMP Dosend ; ;AN000;
others2:
CMP AH,38 ; ;AN000;
JNZ not_stack ; ;AN000;
PUSH CS ; ;AN000;
POP DS ; ;AN000;
MOV SI,OFFSET DOSGROUP:IOSTACK ;AN000;
MOV CX,stacksize ;AN000;
JMP Dosend ; ;AN000;
; ;AN000;
not_stack: ; ;AN000;
MOV CS:[Temp_Var],DS; save ds for strcmp strcpy ;AN000;
PUSH CS ; ;AN000;
POP DS ; ;AN000;
assume DS:DOSGROUP ;AN000;
INC [INDOS] ; in DOS ;AN000;
PUSH CX ; save cx ;AN000;
PUSH DX ; save cx ;AN000;
MOV CX,SS ; cx=stack ;AN000;
MOV DX,CS ; cx=stack ;AN000;
CMP CX,DX ; dosgroup stack ? ;AN000;
POP DX ; save cx ;AN000;
POP CX ; restore cx ;AN000;
JZ withSS_SP ; yes ;AN000;
MOV [Callback_SS],SS ;save SS:SP ;AN000;
MOV [Callback_SP],SP ;AN000;
MOV [SaveBX],BX ; ;AN000;
MOV BX,CS ; prepare system stack ;AN000;
MOV SS,BX ; ;AN000;
MOV SP,OFFSET DOSGROUP:DSKSTACK ;AN000;
MOV BX,[SaveBX] ; ;AN000;
MOV [Callback_flag],1 ;set flag ;AN000;
withSS_SP: ; ;AN000;
STI ;AN000;
ASSUME DS:NOTHING ;AN000;
; OR [DOS34_FLAG],Force_I24_Fail ;AN000;
; ;AN000;
; cmp ah,0 ; call Strategy routine ?? ;AN000;
; jne dos_chk_ah1 ; jump if not ;AN000;
; CALL STRATEGY ; else call strategy routine ;AN000;
; jmp dos_exit ; then exit ;AN000;
;AN000;
;Dos_Chk_Ah1: ;AN000;
; cmp ah,1 ; call interrupt routine ;AN000;
; jne dos_chk_ah2 ; jump if not ;AN000;
; CALL INTERRUPT ; else call interrupt routine ;AN000;
; jmp dos_exit ; then exit ;AN000;
;AN000;
;Dos_Chk_Ah2: ;AN000;
; cmp ah,4 ;AN000;
; jae Dos_Chk_Ah8 ;AN000;
; mov High_Sector,si ; save HI sector word ;AN000;
; mov dx,di ; save low sector ;AN000;
; push es ;AN000;
; invoke FIND_DPB ; ds:si -> DPB ;AN000;
; mov bp,si ;AN000;
; push ds ;AN000;
; pop es ; es:bp -> DPB ;AN000;
; pop ds ; DS:BX-->Input buffer ;AN000;
;
; cmp ah,2 ; absolute read ?? ;AN000;
; jne dos_chk_ah3 ; jump if not ;AN000;
;
; invoke DSKREAD ; else do absolute read ;AN000;
; jmp dos_exit ; then return ;AN000;
;Dos_Chk_Ah3: ;AN000;
; invoke DSKWRITE ; do absolute write ;AN000;
; jmp dos_exit ; then exit ;AN000;
Dos_chk_ah32: ;AN000;
cmp ah,32
jne str_cmp ;AN000;
CALL GET_DOS_INFO ; else get DOS information ;AN000;
jmp SHORT dos_exit ;AN000; ;AN000;
str_cmp: ;AN000;
mov DS,[Temp_Var] ; restore DS ;AN000;
cmp ah,36 ;AN000;
jne str_cpy ;AN000;
invoke strcmp ; string compare ;AN000;
jmp SHORT dos_exit ;AN000;
str_cpy: ;AN000;
cmp ah,37 ;AN000;
jne dos_error ;AN000;
invoke strcpy ; string copy ;AN000;
jmp SHORT dos_exit ;AN000;
Dos_Error: ;AN000;
stc
;AN000;
Dos_Exit: ;AN000;
CLI ;AN000;
PUSHF ;AN000;
AND [DOS34_FLAG],No_Force_I24_Fail ;AN000;
DEC [INDOS] ; exit DOS ;AN000;
CMP [Callback_flag],0 ;from dosgroup
JZ noSS_SP ;yes ;AN000;
MOV [Callback_flag],0 ; ;AN000;
POPF ;AN000;
MOV SP,CS:[Callback_SP]; ;AN000;
MOV SS,CS:[Callback_SS]; restore user's SS:SP ;AN000;
JMP SHORT DOSend ;AN000;
noSS_SP: ;AN000;
POPF
Dosend:
STI ; ;AN000;
ret ;return ;AN000;
ENDPROC IFS_DOSCALL ;AN000;
; ****************************************************************************
; *
; * MODULE: STRATEGY
; *
; * FUNCTION: Call Strategy Routine
; *
; * FUNCTION: This procedure dispatches the IFS DOS service requests
; * by calling various DOS service functions
; *
; * INPUT: ES:BX ---> Device Request Header
; * AL = Drive #
; *
; * CALL STRATEGY
; *
; * OUTPUT: output of driver
; *
; * INTERNAL REFERENCES: None
; *
; *
; * EXTERNAL REFERENCES: GETTHISDRV
; *
; * NOTES: None
; *
; * REVISION HISTORY: New
; *
; *************************************************************************
;PROCEDURE STRATEGY,NEAR ;AN000;
; INVOKE FIND_DPB ; get DPB from drive number ;AN000;
; ; DS:SI-->DPB for drive ;AN000;
; LDS DI,DS:[SI.DPB_Driver_Addr] ; get driver addres from DPB ;AN000;
; MOV DX,WORD PTR [DI.SDEVSTRAT] ;get strategy routine address;AN000;
;Driver_Call: ;AN000;
; MOV WORD PTR [CALLDEVAD],DX ; save it ;AN000;
; MOV WORD PTR [CALLDEVAD+2],DS ; ;AN000;
; CALL DWORD PTR [CALLDEVAD] ; call strategy routine ;AN000;
;STRAT_Exit: ;AN000;
; RET ; return ;AN000;
;ENDPROC STRATEGY ;AN000;
; ****************************************************************************
; *
; * MODULE: INTERRUPT
; *
; * FUNCTION: This procedure calls the interrupt routine of the drive
; * specified in the drive#.
; *
; * INPUT: AL = Drive #
; *
; *
; * OUTPUT: output of driver
; *
; *
; * INTERNAL REFERENCES: None
; *
; *
; * EXTERNAL REFERENCES: FIND_DPB
; *
; * NOTES: None
; *
; * REVISION HISTORY: New
; *
; *************************************************************************
;PROCEDURE INTERRUPT,NEAR ;AN000;
; INVOKE FIND_DPB ; get DPB from drive number ;AN000;
; LDS DI,DS:[SI.DPB_Driver_Addr] ; get driver addres from DPB ;AN000;
; MOV DX,WORD PTR [DI.SDEVINT] ; get interrupt routine addrs;AN000;
; JMP Driver_Call ;AN000;
;ENDPROC INTERRUPT ;AN000;
; ************************************************************************* *
; *
; * MODULE: Get_Dos_Info
; *
; * FUNCTION: Get DOS information
; *
; * INPUT: AL = Dos info code
; *
; * OUTPUT: Dos Information in registers
; *
; * INTERNAL REFERENCES: None
; *
; *
; * EXTERNAL REFERENCES: READTIME, $GETEXTCNTRY
; *
; * NOTES: None
; *
; * REVISION HISTORY: New
; *
; *************************************************************************
PROCEDURE GET_DOS_INFO,NEAR ;AN000;
cmp al,0 ; TIME and DATE ?? ;AN000;
jne chk_al1 ;AN000;
Invoke ReadTime ; get time in CX:DX ;AN000;
push cx ; save time ;AN000;
push dx ;AN000;
MOV CX,[YEAR] ;AN000;
ADD CX,1980 ;AN000;
MOV DX,WORD PTR [DAY] ; fetch both day and month ;AN000;
pop bx ; bh = seconds bl = hundredths ;AN000;
pop ax ; ah = hour al = minutes ;AN000;
; cx = year dh = month ;AN000;
jmp get_info_exit ;AN000;
chk_al1: ; Active process info ?? ;AN000;
cmp al,1 ;AN000;
jne chk_al2 ; no, try next ;AN000;
MOV BX,[CurrentPDB] ; BX = active process ID ;AN000;
mov DX,[User_ID] ; User ID ;AN000;
jmp get_info_exit ; exit ;AN000;
chk_al2: ;AN000;
; cmp al,2 ; get CPSW info ?? ;AN000;
; jne chk_al3 ; jump if not ;AN000;
; MOV SI,OFFSET DOSGROUP:COUNTRY_CDPG ;AN000;
; MOV BX,[SI.ccDosCodePage] ; get dos code page id in BX ;AN000;
; MOV DL,CPSWFLAG ; get CP Switch status ;AN000;
; jmp get_info_exit ; exit ;AN000;
chk_al3:
; cmp al,3 ; get CTRL BRK status ?? ;AN000;
; jne chk_al4 ;AN000;
; mov dl,CNTCFLAG ; DL = break status flag ;AN000;
; jmp get_info_exit ; exit ;AN000;
chk_al4:
; cmp al,4 ; get Verify status ?? ;AN000;
; jne chk_al5
; mov dl,VERFLG ; DL = verify status flag ;AN000;
; jmp get_info_exit ; exit ;AN000;
chk_al5:
cmp al,5 ; Config.sys info ?? ;AN000;
jne chk_al6 ;AN000;
mov si,OFFSET DOSGROUP:SYSINITVAR ; DS:SI-->SysInitVar ;AN000;
push ds ;AN000;
push si ;AN000;
lds si,[si].Sysi_SFT ; get SFT address ;AN000;
mov ax,[si].SFCount ; get number of files ;AN000;
lds si,[si].SFlink ; get next SFT table ;AN000;
cmp si,-1 ; end of table ;AN000;
jz nomore ; ;AN000;
add ax,[si].SFCount ; ;AN000;
nomore: ; ;AN000;
mov es:[di].files,ax ; save files= value ;AN000;
pop si ;AN000;
pop ds ;AN000;
mov ax,[si].Sysi_MaxSec ; get maximum sector size ;AN000;
mov es:[di].secsize,ax ; save files= value ;AN000;
mov ax,[si].Sysi_Keep ; ;AN000;
mov es:[di].fcbs2,ax ; ;AN000;
lds si,[si].Sysi_FCB ; get FCB address ;AN000;
mov ax,[si].SFCount ; get number of fcbs ;AN000;
mov es:[di].fcbs1,ax ; save fcbs= value ;AN000;
jmp get_info_exit ;AN000;
chk_al6: ;AN000;
cmp al,6 ; get machine name ?? ;AN000;
jne chk_al7 ; no, check next function ;AN000;
context DS ;AN000;
mov si,offset DOSGroup:MyName ; DS:SI-->name string ;AN000;
; ES:DI-->return buffer ;AN000;
add di,2 ; skip max return size ;AN000;
mov cx,15 ; name size ;AN000;
Chk6_Loop: ;AN000;
rep movsb ; copy machine name to return buffer;AN000;
xor al,al ; set 16th byte is 0 ;AN000;
stosb ;AN000;
jmp get_info_exit ; return ;AN000;
;AN000;
;AN000;
Chk_Al7: ;AN000;
; cmp al,7 ; get country information ?? ;AN000;
; jne chk_al8 ; no, try next function ;AN000;
; mov al,dl ; AL = info ID ;AN000;
; mov bx,-1 ; select active code page ;AN000;
; mov dx,-1 ; select active country ;AN000;
; mov cx,-1 ; get all ;AN000;
; INVOKE $getExtCntry ; get country info ;AN000;
; jmp SHORT Get_Info_Exit ; exit ;AN000;
Chk_Al8: ;AN000;
cmp al,8 ; get share retry count ?? ;AN000;
jne bad_param ; no, Bad parameter ;AN000;
mov bx,RetryCount ; BX = Share retry count ;AN000;
jmp SHORT Get_Info_Exit ; exit ;AN000;
Bad_Param: ; Bad parameter ;AN000;
stc ; ;AN000;
Get_Info_Exit: ; exit ;AN000;
ret ;AN000;
ENDPROC GET_DOS_INFO ;AN000;
; ************************************************************************* *
; *
; * MODULE: $IFS_IOCTL
; *
; * FUNCTION: Handle IFS Driver IOCTL calls
; *
; * INPUT: AH = 6B function code
; * AL = XX 00 = Drive IOCTL, 01 = Psudo device IOCTL
; * CX = 00 Reserved
; * BL = XX Device Number
; * DS:DX Pointer to Buffer
; *
; * OUTPUT:
; * IF CARRY = 0 No Error
; * IF CARRY = 1 Error
; * AX = ERROR CODE
; *
; * INTERNAL REFERENCES: None
; *
; *
; * EXTERNAL REFERENCES: INT 2F
; *
; * NOTES: None
; *
; * REVISION HISTORY: New
; *************************************************************************
PROCEDURE $IFS_IOCTL,NEAR ;AN000;
PUSH AX ;AN000;
MOV AX,(multnet SHL 8) OR 47 ; pass control to IFS Func ;AN000;
INT 2FH ;AN000;
POP BX ;AN000;
JC ABB_ERR ;AN000;
TRANSFER SYS_RET_OK ; return ;AN000;
ABB_ERR: ;AN000;
transfer SYS_RET_ERR ; error return ;AN000;
ENDPROC $IFS_IOCTL ;AN000;
CODE ENDS ;AN000;
END ;AN000;
|
