Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!rutgers!cbmvax!thomas
From: thomas@cbmvax.UUCP (Dave Thomas QA)
Newsgroups: comp.sys.amiga.tech
Subject: Re: Testing for disk (Lock?)
Message-ID: <6287@cbmvax.UUCP>
Date: 15 Mar 89 14:57:32 GMT
References: <8903150738.AA12483@hermes.berkeley.edu>
Reply-To: thomas@cbmvax.UUCP (Dave Thomas QA)
Organization: Commodore Technology, West Chester, PA
Lines: 42

In article <8903150738.AA12483@hermes.berkeley.edu> dillon@HERMES.BERKELEY.EDU (Matt Dillon) writes:
> :> you would expect.  The problem is that it prompts for DH0: if it is called 
> :> before the disk is mounted (the normal case).
> :> 
> :>         Is there a way to check for the existence of a device or directory and
> :> not have a requestor if the check fails?
> :
> :Yep. In the process structure there is a field called pr_ConsoleTask. If it
> :is set to -1 (I think) this will inhibit DOS requesters appearing for that
> :process.
> :
> :     struct Process *p;
> :
> :     p = (struct Process *) FindTask (0);
> :     p->pr_ConsoleTask = (APTR) -1;
> 	
> 	Uh, that's a nice easy way to crash your machine ...  it is actually
> proc->pr_WindowPtr .  Essentially, you should do this:
> 
>     APTR Save;
> 
>     Save = p->pr_WindowPtr;
>     p->pr_WindowPtr = (APTR)-1L;
> 
>     (do stuff that you don't want reuqesters for here)
> 
>     p->pr_WindowPtr = Save;
> 
> 				-Matt

OOPS! You're right...That's what I get for not looking in the include file. My
memory seems to be going...Hope I didn't confuse anybody.

        Dave
-- 
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   Dave Thomas               COMMODORE AMIGA TEST ENGINEERING
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       Opinions expressed are my own...no one else wants them
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