linux-kernel - Re: [PATCH] hvc_console: returning 0 from put

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20091016084924.GB4234@linux.vnet.ibm.com>
Date:	Fri, 16 Oct 2009 10:49:24 +0200
From:	Hendrik Brueckner <brueckner@...ux.vnet.ibm.com>
To:	Scott Wood <scottwood@...escale.com>
Cc:	Christian Borntraeger <borntraeger@...ibm.com>,
	linuxppc-dev@...abs.org, brueckner@...ux.vnet.ibm.com,
	Timur Tabi <timur@...escale.com>,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] hvc_console: returning 0 from put_chars is not an error

On Thu, Oct 15, 2009 at 02:32:54PM -0500, Scott Wood wrote:
> Christian Borntraeger wrote:
>> About the backends, there are some that spin until the text is 
>> delivered (e.g. virtio) , others can drop (e.g. iucv is a connection 
>> oriented protocol and it will (and has to) drop if there is no 
>> connection). 
>
> Sure, dropping due to not having a connection makes sense.  That's  
> different from merely being busy.  Can the iucv code tell the difference  
> between those two states?

The states are handled by the hvc_iucv itself:
If the hvc_iucv code has a connection established, terminal or console data
are queued and sent to the peer. If the state is disconnected, terminal and
console data is discarded internally.

- Hendrik
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/