From: Peter Hurley <peter@hurleysoftware.com>
To: One Thousand Gnomes <gnomes@lxorguk.ukuu.org.uk>
Cc: Pavel Machek <pavel@ucw.cz>,
Maximiliano Curia <maxy@gnuservers.com.ar>,
Margarita Manterola <margamanterola@gmail.com>,
Arkadiusz Miskiewicz <a.miskiewicz@gmail.com>,
linux-kernel@vger.kernel.org,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Jiri Slaby <jslaby@suse.cz>,
bug-readline@gnu.org, "Rafael J. Wysocki" <rjw@rjwysocki.net>
Subject: Re: Large pastes into readline enabled programs causes breakage from v2.6.31 onwards
Date: Sun, 24 Nov 2013 06:55:27 -0500 [thread overview]
Message-ID: <5291E92F.7010609@hurleysoftware.com> (raw)
In-Reply-To: <20131124002945.19bde9ab@alan.etchedpixels.co.uk>
On 11/23/2013 07:29 PM, One Thousand Gnomes wrote:
>> 7) Rescan line discipline buffer when changing from non-canonical to canonical
>> mode. The real problem with this approach (besides the inefficiency) is that this
>> solution could break some (admittedly unknown) program that contrived to exchange
>> data in non-canonical mode but read in canonical mode (just not exceeding the
>> line discipline buffer limit).
>
> See bugzilla 55981, 55991 btw
Thanks for the bug references, Alan.
The solution proposed in 55991 (to perform an EOF push when switching from
non-canon to canon) would further break paste to readline().
The caller to readline() may not actually perform any read() but may
simply loop, calling readline(); in this case, when readline()
switches back to non-canonical, it will eventually read the inserted '\0'.
That would be bad.
Regards,
Peter Hurley
next prev parent reply other threads:[~2013-11-24 11:55 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-07-25 11:29 Large pastes into readline enabled programs causes breakage from v2.6.31 onwards Margarita Manterola
2013-07-25 23:09 ` Peter Hurley
2013-07-30 12:41 ` Maximiliano Curia
[not found] ` <20130730124117.41DC55E4006@freak.gnuservers.com.ar>
2013-07-30 16:08 ` Peter Hurley
2013-08-08 17:58 ` Maximiliano Curia
2013-08-17 15:28 ` Pavel Machek
2013-08-17 22:57 ` Margarita Manterola
2013-08-18 8:08 ` Geert Uytterhoeven
2013-09-03 5:17 ` Arkadiusz Miskiewicz
2013-10-24 16:00 ` Arkadiusz Miskiewicz
2013-10-29 13:50 ` Maximiliano Curia
2013-10-30 11:21 ` Peter Hurley
2013-11-17 18:29 ` Pavel Machek
2013-11-17 21:38 ` Margarita Manterola
2013-11-21 5:04 ` Peter Hurley
2013-11-22 12:57 ` Peter Hurley
2013-11-24 0:29 ` One Thousand Gnomes
2013-11-24 11:55 ` Peter Hurley [this message]
2013-11-26 1:16 ` Peter Hurley
2013-12-03 0:18 ` Peter Hurley
2013-12-03 9:01 ` Stas Sergeev
2013-12-03 17:00 ` Peter Hurley
2013-12-03 19:18 ` Stas Sergeev
2013-12-03 23:53 ` Peter Hurley
2013-12-04 18:57 ` Stas Sergeev
2013-12-09 14:50 ` [PATCH v3] n_tty: Fix buffer overruns with larger-than-4k pastes Peter Hurley
[not found] ` <52A5EF3F.2070805@list.ru>
2013-12-09 17:10 ` Peter Hurley
2013-12-10 6:15 ` Stas Sergeev
2013-12-10 22:05 ` Peter Hurley
2013-12-10 22:12 ` [PATCH v4] " Peter Hurley
2013-12-17 0:57 ` Greg Kroah-Hartman
2013-12-17 1:24 ` Peter Hurley
2013-12-18 11:48 ` Henrique de Moraes Holschuh
2013-12-18 13:41 ` Peter Hurley
2014-01-28 12:03 ` Large pastes into readline enabled programs causes breakage from v2.6.31 onwards Pavel Machek
2014-01-28 12:17 ` Stas Sergeev
2014-01-28 13:31 ` Peter Hurley
2013-08-19 12:25 ` Peter Hurley
2013-09-03 21:12 ` Maximiliano Curia
2013-09-12 1:36 ` Peter Hurley
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