Hi Günther, Greg,
On Fri, Dec 01, 2023 at 01:26:45PM +0100, Günther Noack wrote:
> Since Linux commit 8d1b43f6a6df7bce ("tty: Restrict access to TIOCLINUX'
> copy-and-paste subcommands"), the TIOCL_SETSEL, TIOCL_PASTESEL and
> TIOCL_SELLOADLUT subcommands require CAP_SYS_ADMIN.
>
> Cc: Hanno Böck <hanno@xxxxxxxxx>
> Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
> Signed-off-by: Günther Noack <gnoack@xxxxxxxxxx>
> ---
> man2/ioctl_console.2 | 12 ++++++++++++
> 1 file changed, 12 insertions(+)
>
> diff --git a/man2/ioctl_console.2 b/man2/ioctl_console.2
> index 684b4d013..abc50b786 100644
> --- a/man2/ioctl_console.2
> +++ b/man2/ioctl_console.2
> @@ -715,12 +715,20 @@ is 0 for character-by-character selection,
> or 2 for line-by-line selection.
> The indicated screen characters are highlighted and saved
> in a kernel buffer.
> +.IP
> +Since Linux 6.7, using this subcode requires the
Are these requirements expected to be backported to stable kernels?
Cheers,
Alex
> +.B CAP_SYS_ADMIN
> +capability.
> .TP
> .BR TIOCLINUX ", " subcode = TIOCL_PASTESEL
> Paste selection.
> The characters in the selection buffer are
> written to
> .IR fd .
> +.IP
> +Since Linux 6.7, using this subcode requires the
> +.B CAP_SYS_ADMIN
> +capability.
> .TP
> .BR TIOCLINUX ", " subcode = TIOCL_UNBLANKSCREEN
> Unblank the screen.
> @@ -729,6 +737,10 @@ Unblank the screen.
> Sets contents of a 256-bit look up table defining characters in a "word",
> for word-by-word selection.
> (Since Linux 1.1.32.)
> +.IP
> +Since Linux 6.7, using this subcode requires the
> +.B CAP_SYS_ADMIN
> +capability.
> .TP
> .BR TIOCLINUX ", " subcode = TIOCL_GETSHIFTSTATE
> .I argp
> --
> 2.43.0.rc2.451.g8631bc7472-goog
>
--
<https://www.alejandro-colomar.es/>
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