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From: Samuel Thibault <samuel.thibault@eu.citrix.com>
To: John Levon <levon@movementarian.org>
Cc: xen-devel@lists.xensource.com
Subject: Re: [PATCH] Fix xenconsole's "Could not read tty from store"
Date: Tue, 18 Dec 2007 17:03:59 +0000	[thread overview]
Message-ID: <20071218170359.GO4244@implementation.uk.xensource.com> (raw)
In-Reply-To: <20071218014144.GA8068@totally.trollied.org.uk>

Oops, there may be a problem with this:

John Levon, le Tue 18 Dec 2007 01:41:44 +0000, a écrit :
> @@ -684,7 +720,9 @@ static void handle_tty_read(struct domai
>  		len = sizeof(msg);
>  
>  	len = read(dom->tty_fd, msg, len);
> -	if (len < 1) {
> +	if (len == 0) {
> +		/* slave did a close: that's fine. */
> +	} else if (len < 0) {
>  		close(dom->tty_fd);
>  		dom->tty_fd = -1;
>  

If the slave did a close, you have to somehow remove the fd from the
select, because else you'll loop trying to read EOF.

Samuel

  parent reply	other threads:[~2007-12-18 17:03 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-12-17 11:22 [PATCH] Fix xenconsole's "Could not read tty from store" Samuel Thibault
2007-12-17 16:42 ` John Levon
2007-12-17 16:54   ` Samuel Thibault
2007-12-18  1:41     ` John Levon
2007-12-18 11:57       ` Samuel Thibault
2007-12-18 13:35       ` John Levon
2007-12-18 17:43         ` Samuel Thibault
2007-12-18 17:03       ` Samuel Thibault [this message]
2007-12-18 18:01         ` John Levon
2007-12-18 18:07   ` Samuel Thibault
2007-12-18 18:13     ` John Levon
2007-12-18 18:18       ` Samuel Thibault
2007-12-18 18:24         ` John Levon
2007-12-18 18:47           ` Samuel Thibault
2007-12-18 18:48             ` Samuel Thibault
2007-12-18 18:55             ` John Levon
2007-12-19 11:39               ` Samuel Thibault
2007-12-18 18:52         ` John Levon
2007-12-18 19:00           ` Samuel Thibault
2007-12-18 19:18             ` John Levon
2007-12-19 11:35               ` Samuel Thibault
2007-12-19 11:29           ` Keir Fraser
2007-12-19 11:36             ` Samuel Thibault
2007-12-19 12:00           ` Samuel Thibault
2007-12-19 13:26             ` John Levon
2007-12-18 20:41 ` VT-d and the GPU Philip Kufeldt

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