Date:	Tue, 9 Mar 1999 12:10:59 +0200 (IST)
From:	Eli Zaretskii <eliz AT is DOT elta DOT co DOT il>
X-Sender:	eliz AT is
To:	Frank Heckenbach <frank AT tim DOT gerwinski DOT de>
cc:	djgpp-workers AT delorie DOT com, peter AT gerwinski DOT de
Subject:	Re: Patch for select()
In-Reply-To:	<124D6181.19990308212633.FOO-19CE.frank@goedel.fjf.gnu.de>
Message-ID:	<Pine.SUN.3.91.990309121011.7248R-100000@is>
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[Redirected to djgpp-workers.]

On Mon, 8 Mar 1999, Frank Heckenbach wrote:

> while porting some GPC code to DJGPP, I found that select() has
> different semantics regarding end of file under DJGPP than under
> Un*x. DJGPP's select() returns `not ready' at the end of a regular
> file (i.e., no character device under Dos), but select() under Un*x
> returns `ready' in this situation (verified under Linux and
> Solaris).

Could you please elaborate under what circumstances does this make a
difference?

> +   /* If it's a disk file, always return 1, since according to Un*x
> +      semantics, select() returns ``ready'' at EOF (and before EOF,
> +      anyway). */

What does this change do with stale handles (e.g., open a file on a
floppy, then remove the disk from the drive, and *then* call select)?

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