Date: Thu, 13 Jan 2000 19:22:58 +0200 (IST)
From: Eli Zaretskii <eliz AT is DOT elta DOT co DOT il>
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To: Laurynas Biveinis <lauras AT softhome DOT net>
cc: djgpp-workers AT delorie DOT com
Subject: Re: fchmod() / fchown() ?
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On Thu, 13 Jan 2000, Laurynas Biveinis wrote:

> > You should at least check for the obvious errors (invalid file handle,
> 
> Is there any library function for this?

I don't think so.  Most handle-based functions call DOS, and if the 
handle is invalid, DOS will return an error code.

> I've only found static
> function is_used_fd() in fcntl.c. It uses int 0x21, function 0x44
> (ioctl - get device information). If this is the way to go, I make
> that function global.

Probably a good idea.

> Hmm, I've never dealt with FSEXT before. Will try.

It's easy.  Look at _open and _read and follow the lead...