From: "Günther Noack" <gnoack3000@gmail.com>
To: Samuel Thibault <samuel.thibault@ens-lyon.org>,
Kees Cook <keescook@chromium.org>
Cc: "Günther Noack" <gnoack3000@gmail.com>,
"Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
"Randy Dunlap" <rdunlap@infradead.org>,
"Jiri Slaby" <jirislaby@kernel.org>,
"Simon Brand" <simon.brand@postadigitale.de>,
linux-kernel@vger.kernel.org, linux-serial@vger.kernel.org
Subject: [PATCH] TIOCSTI: Document CAP_SYS_ADMIN behaviour in Kconfig
Date: Tue, 8 Aug 2023 22:11:12 +0200 [thread overview]
Message-ID: <20230808201115.23993-1-gnoack3000@gmail.com> (raw)
Clarifies that the LEGACY_TIOCSTI setting is safe to turn off even
when running BRLTTY, as it was introduced in commit 690c8b804ad2
("TIOCSTI: always enable for CAP_SYS_ADMIN").
Signed-off-by: Günther Noack <gnoack3000@gmail.com>
---
drivers/tty/Kconfig | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/tty/Kconfig b/drivers/tty/Kconfig
index 341abaed4ce..069de553127 100644
--- a/drivers/tty/Kconfig
+++ b/drivers/tty/Kconfig
@@ -164,6 +164,9 @@ config LEGACY_TIOCSTI
userspace depends on this functionality to continue operating
normally.
+ Processes which run with CAP_SYS_ADMIN, such as BRLTTY, can
+ use TIOCSTI even when this is set to N.
+
This functionality can be changed at runtime with the
dev.tty.legacy_tiocsti sysctl. This configuration option sets
the default value of the sysctl.
--
2.41.0
next reply other threads:[~2023-08-08 20:41 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-08-08 20:11 Günther Noack [this message]
2023-08-08 20:17 ` [PATCH] TIOCSTI: Document CAP_SYS_ADMIN behaviour in Kconfig Samuel Thibault
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20230808201115.23993-1-gnoack3000@gmail.com \
--to=gnoack3000@gmail.com \
--cc=gregkh@linuxfoundation.org \
--cc=jirislaby@kernel.org \
--cc=keescook@chromium.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-serial@vger.kernel.org \
--cc=rdunlap@infradead.org \
--cc=samuel.thibault@ens-lyon.org \
--cc=simon.brand@postadigitale.de \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.