Who has Item locked? How to find out. (OpenInsight Specific) [Revelation On-Line Wiki]

OpenInsight Specific

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At 20 NOV 1998 02:36:33PM B. Cameron wrote:

I wrote a stored procedure that is called to lock a record or check

]]

Subroutine LockItem(Filevar,Idvar,NetworkCntr,Locked,LockError)

*

Equ True$ to 1

Equ False$ to 0

*

LCntr =1

Locked=False$

LockError=False$

*

Loop
 Lock Filevar,Idvar Then
    Locked=True$
 End Else
    If NetworkCntr Then
       For Nc=1 to 1000
       Next Nc
    End
    If LCntr=10 Then
       LockError=True$
    End
    LCntr += 1
 End
Until (Locked or LockError) Do Repeat

*

Return

(Please be critical if compelled…we like improvements)

]]

What I would like to do (for the clients running the NLM) is… if LockError returns true, display a message that the record is already locked by ?????. The ???? would be the Novell Network User name.

This seems to be do able since the NLMSTATS routine displays Netware user id's in its process.

Thanks

At 22 NOV 1998 03:57AM Steve wrote:

The locking strategy (ie choice of network driver) will determine your approach. If you are merely using logical locking, the code to get the logical lock owner (as defined in Novell's API) is quite complex.

As the NLM uses its own locking strategy, via its own internally derived calls, you'd have to ask the RevSoft gurus that one.

Here's an example of just how complex under Novell's standard logical locking API (all users require console privileges):

This example is for AREV-compatible object code.

Steve


CSEG		SEGMENT	PARA PUBLIC 'CODE'
		ASSUME	CS:CSEG
ROUTINE		PROC	FAR
		ORG	0		; START AT ADDRESS ZERO.
		DB	'ASSM'		; 4-BYTE FLAG.
		DB	2		; IDENTIFY AS ASSEMBLY ROUTINE.
NO_ARGS		DB	0		; NUMBER OF ARGUMENTS PASSED.
NO_COMS		DW	0		; NUMBER OF COMMON VARIABLES.
		DW	0		; UNUSED.
FUNCTION	DD	0		; ADDRESS FOR REV FUNCTION CALLS

start:		
		push	ds		; clear out record buffer in memory
		push	si
		push	ax
		push	cx
		mov	ax,cs
		mov	ds,ax
		mov	al,0h
		mov	cx,58D
		clc
		mov	si,offset gfsi_i_req-1
clearbuf:	inc	si
		mov	byte ptr cs:si,0h
		loop	clearbuf
		pop	cx
		pop	ax
		pop	si
		pop	ds		
		jmp	begin           
steve1 label word
charcount	dw	0
param_len	dw	?
rrr		dw	?
rrrlen		dw	?
copyright	DB	0FFh,'LOGICAL.LOCK.OWNER',0FFh
		DB	'Ver 5.0 Copyright (c) 1995, '
                DB      'State of the Art Systems Pty. Ltd.'
		DB	0FFh,'All Rights reserved.',0FFh

rqs	label	word

rqst_buf_len	dw	01h
rqst_call	db	0C8h
		db	90h
rpl	label	word

status		dw	?

gfsi_i_req	label	word	; get logical records output buffer


gfsi_i_len	db	?,?	;dw 0C00h     ; 7-2 bytes to follow
gfsi_i_fn	Db	?	;0F0h	; function F0=get lock info
gfsi_i_f3	db	00h
gfsi_i_f4	db	00h
glr_i_func	db	?	;08h	; 8 chars to follow	
lock_name	db	20 dup (0)

gfsi_o_rsp	label	word		; get logical records output buffer


gfsi_o_len		dw	?	; lo-hi
gfsi_o_next_req_record	dw	?	; hi-lo
gfsi_o_f1		dw	?
gfsi_o_f2		dw	?
gfsi_o_station		db	?
gfsi_o_locker		db	?
glr_o_fill		db	12 dup (0)
glr_o_print_term	db	10 dup (0)
			db      20 dup (0)
			db	90h

gfsi_2i_req	label	word		; get logical records output buffer


gfsi_2i_len	dw	?	;0500h     ; 7-2 bytes to follow
gfsi_2i_fn	Db	?	;01Ch	; function F0=get lock info
gfsi_2i_station	db	?
gfsi_2i_f4	db	00h
gfsi_2i_f5	db	00h
gfsi_2i_f6	db	00h
glr_2i_func	db	?	;08h	; 8 chars to follow	

		db	40 dup (0)


begin:		mov	charcount,0
		cmp	NO_ARGS,1	; accept only one argument from AREV
		je	ARGS_OK		; if not one then return null
		jmp	done
args_ok:	mov	dx,cs
		mov	ds,dx
		mov	es,dx

;-- Check for console operator privileges 
; - if lacking then return null

		mov	ah,0E3h
		mov	si,offset rqs
		mov	di,offset rpl
		int	21h
		cmp	al,0C6h
		jne	get_arg
		jmp	done

;-- Get Argument from AREV 

get_arg:

MOV	rqst_buf_len,01h
MOV	rqst_call,0C8h
MOV	status,0h


MOV	gfsi_i_len1,0
MOV	gfsi_i_fn,0
MOV	gfsi_i_f3,00h
MOV	gfsi_i_f4,0h
MOV	glr_i_func,0H
MOV	lock_name1,0H



MOV	gfsi_o_len,7
MOV	gfsi_o_next_req_record,0
MOV	gfsi_o_f1,0
MOV	gfsi_o_f2,0
MOV	gfsi_o_station,0
MOV	gfsi_o_locker1,0
MOV	glr_o_fill1,0
MOV	glr_o_print_term1,0


MOV	gfsi_2i_len,0
MOV	gfsi_2i_fn,0
MOV	gfsi_2i_station,0
MOV	gfsi_2i_f4,0
MOV	gfsi_2i_f5,0
MOV	gfsi_2i_f6,0
MOV	glr_2i_func,0


		mov	ax,0D00h	; fetch AREV string pointer
		mov	dx,01h		; string is passed as first parameter
		call	function	; get string from AREV - DS:SI=ptr
					; cx=number of chars.
		mov	param_len,cx
		mov	rrr,0h
		mov	rrrlen,0h
		mov	di,offset lock_name
		cmp	cx,0
		jne	xfer	; 1st AREV parameter must be  ''
		jmp	done	; else return null
xfer:		mov	al, byte ptr ds:si	;transfer input string
		mov	BYTE PTR CS:DI,AL	;to our buffer, ASCIIZ format
		INC	DI
		INC	SI		
		loop	XFER
		MOV	BYTE PTR CS:DI,0h
		cld
		clc
		mov	dx,param_len
		mov	glr_i_func,dl
		add	dl,04h
		mov	gfsi_i_len1,	dl
		mov	dx,cs
		mov	ds,dx
		mov	es,dx
		push	dx
		push	cx
		push	bx
		push	di
		push	si
process:	mov	ah,0DCh		;get stn number
		int	21h
		cmp	al,0h
		jne	stn_ok
		jmp	windup		;no network station - return null

stn_ok:	

		mov	ax,0F217h
		mov	cx,0Eh
		mov	cs:gfsi_i_fn,	0F0h	; function F0=get lock info
		mov	cs:gfsi_i_f3,	00h
		mov	cs:gfsi_i_f4,	00h
		mov	cs:glr_i_func,	08h	; 8 chars to follow	
		mov	si,offset gfsi_i_req
		mov	di,offset gfsi_o_rsp
		int	21h
		mov	cx,gfsi_o_len
		jcxz	windup	;if response length=0
                                ; no lock active

		mov	ax,0f217H
		mov	cx,07h
		mov	si,offset gfsi_2i_req
		mov	di,offset gfsi_o_rsp
		mov	gfsi_2i_len,0500h
		mov	gfsi_2i_fn,1Ch
		mov	dl,gfsi_o_locker
		mov	gfsi_2i_station,dl
		int	21h
;noparam:	mov	rrrlen,cx
		mov	si,offset gfsi_o_len+6	
		mov	rrr,si
		mov	cs:rrrlen,0h
printchar:	mov	dl,si
		inc	si
		inc	cs:rrrlen
		cmp	dl,0h
		jne	printchar
		dec	cs:rrrlen
windup:	


		pop	si
		pop	di
		pop	bx
		pop	cx
		pop	dx
		xor	cx,cx
		mov	si,offset gfsi_o_len+6	
		mov	cx,cs:rrrlen				
done:		mov	cs:charcount,cx	; pass back answer to AREV
		mov	cx,cs:charcount
		mov	dx,cs
		mov	ds,dx
		mov	si,cs:rrr		; ds:si=string to return 
		xor	cx,cx			; allocate cx bytes for name
		mov	cx,cs:charcount
		mov	ah,0fh	; Ask AREV to allocate memory
		call	function
		push	di
		rep	movsb	; put string into AREV variable
		pop	di
		xor	cx,cx
		mov	cx,cs:charcount		; transfer length
		xor	ax,ax
		xor	dx,dx
		mov	ah,10h			; transfer string to AREV
		call	function    
		ret                   
		routine	endp

CSEG	ENDS
END

At 23 NOV 1998 04:43PM [email protected] - [url=http://www.sprezzatura.com]Sprezzatura, Inc.[/url] wrote:

Another free goodie from your friends at Sprezzatura!

Write Object out to $WHOSELOCK

Then

RetVal=WhoseLock( FileName, RecordName )

RecordName must be assigned!!!

RetVal=UserName

RetVal=Network ID

If RecordName is Null then

RetVal=Record Keys

and all values will be @VM delimited

Object='

Object := \03150002006601A0010000EA64408001800CA8EB6B482400EC\

Object := \800140ED800D404A2C00EC801740ED801F40E8800CA8EE6B48\

Object := \6201EFEDE868802563AF40EE8027EEEE2480298027060A0640\

Object := \EEEE802B64216602EE24800C318036800C800C800C800CC0CD\

Object := \EA802F41078039F0EE800C65C0CDEA802F41078039F1EF800C\

Object := \8A6AC0CDEA802F4107F26440F1F263631E24635248C7008039\

Object := \F3EFF1F263631E8A6BC0CDEA802F4107EA48C40014FE14FD06\

Object := \14FD14FC06F3ABF1A7F26563F31B40F2A76402404A8A00F2A7\

Object := \640340F4800C40E924480C01E9F01D210014FDF5AC480501F0\

Object := \8A1EF5631EF01D1D0014FDF6AC480201F4F1F665631E14FE06\

Object := \F1F666631E06404A0901F4800C404A6201F7F01D1E0040F863\

Object := \40F96440FA800C40FB800C40F9485201FCF7F8F9D2FCF01D1D\

Object := \0014FDF6AC484F01FAA764640E63F1F665631E1B40FBA76464\

Object := \0E63F1F666631E1B404A2001F4FA14FE06FB0614FE06F01D21\

Object := \000640F429B8740A535953564F4C554D455300095359535441\

Object := \424C455307564F4C554D45530546494C45530158010D014203\

Object := \2E4C4B0652545035374102464C025354FE47454E4552414C5F\

Object := \4250FE57484F53454C4F434BFE31363A34323A323220203233\

Object := \204E4F562031393938\

[email protected]

Sprezzatura, Inc.

At 24 NOV 1998 04:38AM Oystein Reigem wrote:

Aaron,

Nice utility for sure, but I get "variable has not been assigned a value" at line 1 when I run it. (The row I tested it with wasn't locked, but surely that can't be the problem???)

- Oystein -

At 24 NOV 1998 09:22AM [email protected] - [url=http://www.sprezzatura.com]Sprezzatura, Inc.[/url] wrote:

Could be you're not using the NLM? However, added new check to make sure NLM is active.

Object='

Object := \03150002009901D9010000EA6440C09FC09EE8ABC09FC09EE9\

Object := \AB8001800CA8EB6B483000EC800140ED800D404A3800EC8017\

Object := \40ED801F40EE800C40E8800CA8EF6B489501EF802564214895\

Object := \01F0EDE868802B63AF40EF802DEFEF24802F802D060A0640EF\

Object := \EF803164216602EF24800C31F1800C40F2800C40803C800C80\

Object := \0C800C800CC0CDEA80354107803FF1EF800C65C0CDEA803541\

Object := \07803FF2F0800C8A6AC0CDEA80354107803FF2EF800C8A6AC0\

Object := \CDEA80354107F36440F2F363631E24635248FA00F4800C4080\

Object := \3FF4EFF2F363631E8A6BC0CDEA80354107EA48F70014FE14FD\

Object := \0614FD14FC06F4ABF2A7F36563F41B40F3A76402404AB900F3\

Object := \A7640340EE800C40E924483F01E9F11D210014FDF5AC483801\

Object := \F18A1EF5631EF11D1D0014FDF6AC483501EEF2F665631E14FE\

Object := \06F2F666631E06404A3C01EE800C404A9501F7F11D1E0040F8\

Object := \6340F96440FA800C40FB800C40F9488501FCF7F8F9D2FCF11D\

Object := \1D0014FDF6AC488201FAA764640E63F2F665631E1B40FBA764\

Object := \640E63F2F666631E1B404A5301EEFA14FE06FB0614FE06F11D\

Object := \21000640EE29B8740A535953564F4C554D4553000953595354\

Object := \41424C455307564F4C554D45530546494C4553054646464646\

Object := \0158010D0142032E4C4B0652545035374102464C025354\

[email protected]

Sprezzatura, Inc.

At 24 NOV 1998 09:31AM Oystein Reigem wrote:

Aaron,

Could be you're not using the NLM

Could be. And my car's an 86 model Nissan, with one of the doors in a different colour.

So does WhoseLock work strictly with the NLM? (If the answer is yes I don't need details.)

- Oystein -

At 24 NOV 1998 06:39PM Bob Watson wrote:

A big thankyou to Sprezzatura once again!!!

Bob Watson

At 24 NOV 1998 07:20PM [email protected] onmouseover=window.status=why not click here to send me email?;return(true)", [url=http://www.sprezzatura.com" onMouseOver=window.status=Why not click here to visit our web site?';return(true)]Sprezzatura Ltd[/url] wrote:

What I would like to do (for the clients running the NLM) is… if LockError returns true, display a message that the record is already locked by ?????. The ???? would be the Novell Network User name.

from the original message - hence Aaron's post!

PS What colour is the other door then?

[email protected]

Sprezzatura Ltd

World Leaders in all things RevSoft

At 25 NOV 1998 04:19AM Oystein Reigem wrote:

from the original message - hence Aaron's post!

Sorry - for some reason I missed the original and assumed Aaron started the thread.

PS What colour is the other door then?

The one I keep locked with a piece of string?

- Oystein -

At 25 NOV 1998 04:32AM Oystein Reigem wrote:

Sorry, Aaron - for some reason I missed the original message, overlooked the "Re:", and assumed you started the thread. That's why I didn't know your function was meant for the NLM.

Only one more thing - you replied twice to my posting, with different hex code. If I don't hear from you I assume your latest response contains the correct code.

- Oystein -

At 25 NOV 1998 08:27AM [email protected] - [url=http://www.sprezzatura.com]Sprezzatura, Inc.[/url] wrote:

Yes, the second one is the correct one. I'm not sure how I posted twice. I send a mail to Revelation asking them to delete the older of the two messages.

[email protected]

Sprezzatura, Inc.