[console] Exclude text-based UI output from logfile-based consoles

The output from text-based user interfaces such as the "config"
command is not generally meaningful for logfile-based consoles such as
syslog and vmconsole.

Signed-off-by: Michael Brown <mcb30@ipxe.org>

1 files changed, 14 insertions, 2 deletions

diff --git a/src/hci/mucurses/ansi_screen.c b/src/hci/mucurses/ansi_screen.c
index cc342f7c..d952e5f2 100644
--- a/src/hci/mucurses/ansi_screen.c
+++ b/src/hci/mucurses/ansi_screen.c
@@ -12,6 +12,8 @@ static void ansiscr_putc(struct _curses_screen *scr, chtype c) __nonnull;
 unsigned short _COLS = 80;
 unsigned short _LINES = 24;
 
+static unsigned int saved_usage;
+
 static void ansiscr_reset ( struct _curses_screen *scr ) {
 	/* Reset terminal attributes and clear screen */
 	scr->attrs = 0;
@@ -20,6 +22,16 @@ static void ansiscr_reset ( struct _curses_screen *scr ) {
 	printf ( "\033[0m" );
 }
 
+static void ansiscr_init ( struct _curses_screen *scr ) {
+	saved_usage = console_set_usage ( CONSOLE_USAGE_TUI );
+	ansiscr_reset ( scr );
+}
+
+static void ansiscr_exit ( struct _curses_screen *scr ) {
+	ansiscr_reset ( scr );
+	console_set_usage ( saved_usage );
+}
+
 static void ansiscr_movetoyx ( struct _curses_screen *scr,
 			       unsigned int y, unsigned int x ) {
 	if ( ( x != scr->curs_x ) || ( y != scr->curs_y ) ) {
@@ -65,8 +77,8 @@ static bool ansiscr_peek ( struct _curses_screen *scr __unused ) {
 }
 
 SCREEN _ansi_screen = {
-	.init		= ansiscr_reset,
-	.exit		= ansiscr_reset,
+	.init		= ansiscr_init,
+	.exit		= ansiscr_exit,
 	.movetoyx	= ansiscr_movetoyx,
 	.putc		= ansiscr_putc,
 	.getc		= ansiscr_getc,