From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Howard Chu <hyc@symas.com>
Cc: linux-kernel@vger.kernel.org, Greg KH <greg@kroah.com>
Subject: Re: [PATCH] tty: Add EXTPROC support for LINEMODE
Date: Thu, 17 Jun 2010 21:49:15 +0100 [thread overview]
Message-ID: <20100617214915.3478e501@lxorguk.ukuu.org.uk> (raw)
In-Reply-To: <4C1A7F72.6020907@symas.com>
> >> For Alpha this value should match OSF if possible.
>
> OSF didn't define this flag, nor did it assign that particular bit to any
> purpose. Is that good enough?
Fine
> > Are you suggesting that this is completely unfixable/unworkable? Would it be
> > sufficient to use kernel_termios_to_user_termios() ?
I don't see a way to fix it sanely
> >
> Actually using kernel_termios_to_user_termios_1(). In all supported
> architectures this structure is basically aligned with but smaller than the
> userland struct termios.
The relationship isn't quite so simple and it may change in the future,
so this seems to be a very bad idea. Besides which syscalls are *cheap*
so simply notifying someone to reread the terminal data they care about
should be fine. In that sense it seems SVR4 got it right.
Alan
next prev parent reply other threads:[~2010-06-17 20:45 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-06-15 18:56 hyc
2010-06-15 19:29 ` Alan Cox
2010-06-15 19:54 ` Howard Chu
2010-06-15 20:23 ` Howard Chu
2010-06-16 15:13 ` Derek Fawcus
2010-06-17 20:02 ` Howard Chu
2010-06-17 20:49 ` Alan Cox [this message]
2010-06-17 21:23 ` Howard Chu
2010-06-17 23:43 ` Howard Chu
2010-06-16 1:15 ` Chris Adams
2010-06-18 19:45 hyc
2010-06-18 22:20 ` Howard Chu
2010-06-22 15:59 ` Howard Chu
2010-06-22 16:03 ` Greg KH
2010-06-22 17:28 ` Alan Cox
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