From: Eli Zaretskii <eliz@gnu.org>
To: Dmitry Gutov <dmitry@gutov.dev>, Paul Eggert <eggert@cs.ucla.edu>
Cc: 24531@debbugs.gnu.org, sbaugh@janestreet.com,
6149@debbugs.gnu.org, monnier@iro.umontreal.ca,
jidanni@jidanni.org
Subject: bug#6149: bug#24531: process-send-string seems to truncate lines over 4096 characters
Date: Thu, 27 Jul 2023 08:41:52 +0300 [thread overview]
Message-ID: <83r0otnc67.fsf@gnu.org> (raw)
In-Reply-To: <19e73ab0-19b5-d7f4-8912-20c9e822e3fb@gutov.dev> (message from Dmitry Gutov on Thu, 27 Jul 2023 04:48:18 +0300)
> Date: Thu, 27 Jul 2023 04:48:18 +0300
> Cc: 24531@debbugs.gnu.org, 6149@debbugs.gnu.org,
> Stefan Monnier <monnier@iro.umontreal.ca>, jidanni@jidanni.org
> From: Dmitry Gutov <dmitry@gutov.dev>
>
> If some syscall or etc limits the length of a string to 4096, can't we
> detect this case, split the string and emit said call multiple times?
>
> This function's docstring already mentions the case of
>
> If STRING is larger than the input buffer of the process, ...
> it is sent in several bunches
AFAIU, that is based on the errno value returned by a 'write' call
which attempts to write too many bytes (see the would_block function).
I guess writes to PTYs don't do that?
Paul, do you know anything about that?
next prev parent reply other threads:[~2023-07-27 5:41 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-05-10 4:14 bug#6149: 24.0.50; shell buffer overflow when input longer than 4096 bytes jidanni
2010-06-01 1:50 ` Stefan Monnier
2023-07-20 20:15 ` bug#6149: bug#24531: process-send-string seems to truncate lines over 4096 characters Spencer Baugh
2023-07-20 21:21 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-07-21 5:39 ` Eli Zaretskii
2023-07-21 13:58 ` Spencer Baugh
2023-07-21 14:18 ` Eli Zaretskii
2023-07-27 1:48 ` bug#6149: " Dmitry Gutov
2023-07-27 5:41 ` Eli Zaretskii [this message]
2023-07-27 13:59 ` Spencer Baugh
2023-07-27 14:51 ` Paul Eggert
2023-07-21 15:09 ` bug#24531: " Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2018-09-28 20:13 ` bug#6149: 24.0.50; shell buffer overflow when input longer than 4096 bytes Charles A. Roelli
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