From 4171d32e6eea47bf2cd160ace0ec3639e10b3aa9 Mon Sep 17 00:00:00 2001 From: Jes Sorensen Date: Wed, 16 Mar 2011 13:33:32 +0100 Subject: [PATCH] Introduce -display none New option -display none. This option differs from -nographic by not trying to take control of stdio etc. but instead behaves as if a graphics display is enabled, except that it doesn't show one. Signed-off-by: Jes Sorensen Signed-off-by: Anthony Liguori --- qemu-options.hx | 8 +++++++- sysemu.h | 1 + vl.c | 2 ++ 3 files changed, 10 insertions(+), 1 deletion(-) diff --git a/qemu-options.hx b/qemu-options.hx index a3191e6..08a99b5 100644 --- a/qemu-options.hx +++ b/qemu-options.hx @@ -592,7 +592,7 @@ ETEXI DEF("display", HAS_ARG, QEMU_OPTION_display, "-display sdl[,frame=on|off][,alt_grab=on|off][,ctrl_grab=on|off]\n" - " [,window_close=on|off]|curses\n" + " [,window_close=on|off]|curses|none\n" " select display type\n", QEMU_ARCH_ALL) STEXI @item -display @var{type} @@ -609,6 +609,12 @@ support a text mode, QEMU can display this output using a curses/ncurses interface. Nothing is displayed when the graphics device is in graphical mode or if the graphics device does not support a text mode. Generally only the VGA device models support text mode. +@item none +Do not display video output. The guest will still see an emulated +graphics card, but its output will not be displayed to the QEMU +user. This option differs from the -nographic option in that it +only affects what is done with video output; -nographic also changes +the destination of the serial and parallel port data. @end table ETEXI diff --git a/sysemu.h b/sysemu.h index 0a83ab9..c43c7af 100644 --- a/sysemu.h +++ b/sysemu.h @@ -110,6 +110,7 @@ typedef enum DisplayType DT_CURSES, DT_SDL, DT_NOGRAPHIC, + DT_NONE, } DisplayType; extern int autostart; diff --git a/vl.c b/vl.c index dd026aa..2da2136 100644 --- a/vl.c +++ b/vl.c @@ -1618,6 +1618,8 @@ static DisplayType select_display(const char *p) fprintf(stderr, "Curses support is disabled\n"); exit(1); #endif + } else if (strstart(p, "none", &opts)) { + display = DT_NONE; } else { invalid_display: fprintf(stderr, "Unknown display type: %s\n", p); -- 2.7.4