Re: [PATCH v2 4/4] ioctl_console.2: document all extant TIOCLINUX subcodes as of 6.0 (2.6.17)

[Alejandro Colomar <alx.manpages@gmail.com>]

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Hi!

On 9/2/22 15:07, наб wrote:
> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>

Patch set applied.  And added Cc: Jakub ... to the log.

Cheers,

Alex

> ---
> v2: with corrections from Jakub
> 
>   man2/ioctl_console.2 | 43 ++++++++++++++++++++++++++++++++++++++++++-
>   1 file changed, 42 insertions(+), 1 deletion(-)
> 
> diff --git a/man2/ioctl_console.2 b/man2/ioctl_console.2
> index 0c25edf67..145e98081 100644
> --- a/man2/ioctl_console.2
> +++ b/man2/ioctl_console.2
> @@ -787,8 +787,49 @@ blank_timer times out, then you choose this option.
>   Powering down frequently will damage the monitor.)
>   (Since Linux 1.1.76.)
>   .RE
> +.TP
> +.BR TIOCLINUX ", " subcode = TIOCL_SETKMSGREDIRECT
> +Change target of kernel messages ("console"):
> +by default, and if this is set to
> +.BR 0 ,
> +messages are written to the currently active VT.
> +The VT to write to is a single byte following
> +.BR subcode .
> +(Since Linux 2.5.36.)
> +.TP
> +.BR TIOCLINUX ", " subcode = TIOCL_GETFGCONSOLE
> +Returns the number of VT currently in foreground.
> +(Since Linux 2.5.36.)
> +.TP
> +.BR TIOCLINUX ", " subcode = TIOCL_SCROLLCONSOLE
> +Scroll the foreground VT by the specified amount of
> +.I lines
> +down,
> +or half the screen if
> +.BR 0 .
> +.I lines
> +is *(((int32_t *)&subcode) + 1).
> +(Since Linux 2.5.67.)
> +.TP
> +.BR TIOCLINUX ", " subcode = TIOCL_BLANKSCREEN
> +Blank the foreground VT, ignoring "pokes" (typing):
> +can only be unblanked explicitly (by switching VTs, to text mode, etc.).
> +(Since Linux 2.5.71.)
> +.TP
> +.BR TIOCLINUX ", " subcode = TIOCL_BLANKEDSCREEN
> +Returns the number of VT currently blanked,
> +.B 0
> +if none.
> +(Since Linux 2.5.71.)
> +.TP
> +.BR TIOCLINUX ", " subcode = 16
> +Never used.
> +.TP
> +.BR TIOCLINUX ", " subcode = TIOCL_GETKMSGREDIRECT
> +Returns target of kernel messages.
> +(Since Linux 2.6.17.)
>   .SH RETURN VALUE
> -On success, 0 is returned.
> +On success, 0 is returned (except where indicated).
>   On failure, \-1 is returned, and
>   .I errno
>   is set to indicate the error.

-- 
Alejandro Colomar
<http://www.alejandro-colomar.es/>

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