[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>

src/arch/i386/interface/vmware/vmconsole.c

 /* Set default console usage if applicable */
 #if ! ( defined ( CONSOLE_VMWARE ) && CONSOLE_EXPLICIT ( CONSOLE_VMWARE ) )
 #undef CONSOLE_VMWARE
-#define CONSOLE_VMWARE CONSOLE_USAGE_ALL
+#define CONSOLE_VMWARE ( CONSOLE_USAGE_ALL & ~CONSOLE_USAGE_TUI )
 #endif
 
 /** VMware logfile console GuestRPC channel */

src/hci/mucurses/ansi_screen.c

 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;
 	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 ) ) {
 }
 
 SCREEN _ansi_screen = {
-	.init		= ansiscr_reset,
-	.exit		= ansiscr_reset,
+	.init		= ansiscr_init,
+	.exit		= ansiscr_exit,
 	.movetoyx	= ansiscr_movetoyx,
 	.putc		= ansiscr_putc,
 	.getc		= ansiscr_getc,

src/include/ipxe/console.h

 /** Debug messages */
 #define CONSOLE_USAGE_DEBUG 0x0002
 
+/** Text-based user interface */
+#define CONSOLE_USAGE_TUI 0x0004
+
 /** All console usages */
-#define CONSOLE_USAGE_ALL ( CONSOLE_USAGE_STDOUT | CONSOLE_USAGE_DEBUG )
+#define CONSOLE_USAGE_ALL \
+	( CONSOLE_USAGE_STDOUT | CONSOLE_USAGE_DEBUG | CONSOLE_USAGE_TUI )
 
 /** @} */
 

src/net/udp/syslog.c

 /* Set default console usage if applicable */
 #if ! ( defined ( CONSOLE_SYSLOG ) && CONSOLE_EXPLICIT ( CONSOLE_SYSLOG ) )
 #undef CONSOLE_SYSLOG
-#define CONSOLE_SYSLOG CONSOLE_USAGE_ALL
+#define CONSOLE_SYSLOG ( CONSOLE_USAGE_ALL & ~CONSOLE_USAGE_TUI )
 #endif
 
 /** The syslog server */