6.4-stable review patch. If anyone has any objections, please let me know.
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From: Günther Noack gnoack3000@gmail.com
commit 3f29d9ee323ae5cda59d144d1f8b0b10ea065be0 upstream.
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 Reviewed-by: Samuel Thibault samuel.thibault@ens-lyon.org Link: https://lore.kernel.org/r/20230808201115.23993-1-gnoack3000@gmail.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/tty/Kconfig | 3 +++ 1 file changed, 3 insertions(+)
--- 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.