Date:	Fri, 2 Apr 1999 09:03:40 +0200 (IST)
From:	Eli Zaretskii <eliz AT is DOT elta DOT co DOT il>
X-Sender:	eliz AT is
To:	Frank Frederiksen <ff AT kom DOT auc DOT dk>
cc:	djgpp AT delorie DOT com
Subject:	Re: Strange errors with _get_dev_info
In-Reply-To:	<E10NzQb-0004tJ-00@hercules.kom.auc.dk>
Message-ID:	<Pine.SUN.3.91.990402085916.22974K-100000@is>
MIME-Version:	1.0
Reply-To:	djgpp AT delorie DOT com
X-Mailing-List:	djgpp AT delorie DOT com
X-Unsubscribes-To:	listserv AT delorie DOT com

On Fri, 19 Mar 1999, Frank Frederiksen wrote:

> >   /* Scan from c: and upwards */
> >   for(drive=2;drive<setdisk(getdisk());drive++) {
> >     if(_get_dev_info(drive)==-1)
> >       printf("Error on drive %c (%d)\n", drive+'A', errno);
> >     else
> >       printf("Drive %c is OK\n", drive+'A');
> >   }

Sorry for a late reply.

I'm afraid this is simply a bug in the DJGPP docs: the libc reference 
says that the argument to _get_dev_info is a handle or a drive number.  
The latter part is incorrect: the function accepts *only* file handles.  
So, to get info about a disk file, you need to open a file on that disk, 
and then pass the handle to _get_dev_info.

The strange behavior you reported is due to the fact that the function 
was interpreting the argument as a file handle, and thus any open handle, 
like those in the 0-4 range, would succeed, while the rest would fail.

I'm sorry for the confusion; I just checked in a change for the next 
release.

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