linux-kernel - [PATCH v2 3/6] vt/vt: Enable mode change via escape sequence

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Message-ID: <2c1ee5a51616d55031f6148490e831727d69db40.1593615440.git.tammo.block@gmail.com>
Date:   Wed, 1 Jul 2020 17:12:32 +0200
From:   Tammo Block <tammo.block@...il.com>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jiri Slaby <jslaby@...e.com>
Subject: [PATCH v2 3/6] vt/vt: Enable mode change via escape sequence

This enables userspace to enable one of the mouse protocols and choose
one of the new event types by escape sequences.

And don't forget to reset protocol value also if resetting vc.

Signed-off-by: Tammo Block <tammo.block@...il.com>
---
 drivers/tty/vt/vt.c | 19 +++++++++++++++++--
 1 file changed, 17 insertions(+), 2 deletions(-)

diff --git a/drivers/tty/vt/vt.c b/drivers/tty/vt/vt.c
index 673177d4e859..9abf2829b1d3 100644
--- a/drivers/tty/vt/vt.c
+++ b/drivers/tty/vt/vt.c
@@ -1838,6 +1838,8 @@ static inline void respond_ID(struct tty_struct *tty)
 	respond_string(vt102_id, strlen(vt102_id), tty->port);
 }
 
+enum { Mouse_X10 = 0, Mouse_SRG, Mouse_URXVT};
+
 void mouse_report(struct tty_struct *tty, int butt, int mrx, int mry)
 {
 	char buf[8];
@@ -1896,13 +1898,25 @@ static void set_mode(struct vc_data *vc, int on_off)
 					clr_kbd(vc, decarm);
 				break;
 			case 9:
-				vc->vc_report_mouse = on_off ? 1 : 0;
+				vc->vc_report_mouse = on_off * TIOCL_REPORTBTNPRESS;
 				break;
 			case 25:		/* Cursor on/off */
 				vc->vc_deccm = on_off;
 				break;
 			case 1000:
-				vc->vc_report_mouse = on_off ? 2 : 0;
+				vc->vc_report_mouse = on_off * TIOCL_REPORTRELEASE;
+				break;
+			case 1002:
+				vc->vc_report_mouse = on_off * TIOCL_REPORTDRAG;
+				break;
+			case 1003:
+				vc->vc_report_mouse = on_off * TIOCL_REPORTANYMOVE;
+				break;
+			case 1006:
+				vc->vc_protocol_mouse = on_off * Mouse_SRG;
+				break;
+			case 1015:
+				vc->vc_protocol_mouse = on_off * Mouse_URXVT;
 				break;
 			}
 		} else {
@@ -2067,6 +2081,7 @@ static void reset_terminal(struct vc_data *vc, int do_clear)
 	vc->state.charset	= 0;
 	vc->vc_need_wrap	= 0;
 	vc->vc_report_mouse	= 0;
+	vc->vc_protocol_mouse	= 0;
 	vc->vc_utf              = default_utf8;
 	vc->vc_utf_count	= 0;
 
-- 
2.27.0