Commit 3f29d9ee authored by Günther Noack's avatar Günther Noack Committed by Greg Kroah-Hartman
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TIOCSTI: Document CAP_SYS_ADMIN behaviour in Kconfig 



Clarifies that the LEGACY_TIOCSTI setting is safe to turn off even
when running BRLTTY, as it was introduced in commit 690c8b80
("TIOCSTI: always enable for CAP_SYS_ADMIN").

Signed-off-by: default avatarGünther Noack <gnoack3000@gmail.com>
Reviewed-by: default avatarSamuel Thibault <samuel.thibault@ens-lyon.org>
Link: https://lore.kernel.org/r/20230808201115.23993-1-gnoack3000@gmail.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent dfe2aeb2

drivers/tty/Kconfig

+3 −0
Original line number Diff line number Diff line
@@ -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.