On 2025-02-23 01:13, Günther Noack wrote:
These previously undocumented selection modes for the Linux console
are implemented in drivers/tty/vt/selection.c.
Cc: Jared Finder <jared@xxxxxxxxxx>
Cc: Hanno Böck <hanno@xxxxxxxxx>
Cc: Jann Horn <jannh@xxxxxxxxxx>
Cc: Jiri Slaby <jirislaby@xxxxxxxxxx>
Cc: jwilk@xxxxxxxxx
Signed-off-by: Günther Noack <gnoack3000@xxxxxxxxx>
---
man/man2const/TIOCLINUX.2const | 48 ++++++++++++++++++++++++++++++----
1 file changed, 43 insertions(+), 5 deletions(-)
diff --git a/man/man2const/TIOCLINUX.2const
b/man/man2const/TIOCLINUX.2const
index c0acdd0ea..27758584e 100644
--- a/man/man2const/TIOCLINUX.2const
+++ b/man/man2const/TIOCLINUX.2const
@@ -65,11 +65,49 @@ are the ending
column and row.
(Upper left corner is row=column=1.)
.I sel_mode
-is 0 for character-by-character selection,
-1 for word-by-word selection,
-or 2 for line-by-line selection.
-The indicated screen characters are highlighted and saved
-in a kernel buffer.
+may be one of the following operations:
+.RS
+.TP
+.B TIOCL_SELCHAR
+Select character-by-character.
+The indicated screen characters are highlighted
+and saved in a kernel buffer.
+.TP
+.B TIOCL_SELWORD
+Select word-by-word.
+The indicated screen characters are highlighted
+and saved in a kernel buffer.
+.TP
+.B TIOCL_SELLINE
+Select line-by-line.
+The indicated screen characters are highlighted
+and saved in a kernel buffer.
+.TP
+.B TIOCL_SELPOINTER
+Show the pointer at position
+.RI ( xe ", " ye ).
+.TP
Wouldn't it be appropriate to call out here that this specific code is
not intended to be protected by CAP_SYS_ADMIN?
+.B TIOCL_SELCLEAR
+Remove the current selection highlight, if any,
+from the console holding the selection.
+.TP
And this one too?
+.B TIOCL_SELMOUSEREPORT
+Report
+.RI ( xs ", " ys )
+as the current mouse location.
+In this selection mode,
+the lower 4 bits of
+.I sel_mode
+.RB ( TIOCL_SELBUTTONMASK )
+may additionally be set to indicate the desired button press and
+modifier key information for the mouse event.
+.\"
https://invisible-island.net/xterm/ctlseqs/ctlseqs.html#h3-Normal-tracking-mode
+.IP
+If mouse reporting is not enabled for the terminal,
+this operation yields an
+.B EINVAL
+error.
+.RE
.IP
Since Linux 6.7, using this subcode requires the
.B CAP_SYS_ADMIN
-- MJF
