Provide help output similar to other argument help handling:
$ qemu-system-x86_64 -vga help
none
std standard VGA (default)
cirrus Cirrus VGA
vmware VMWare SVGA
xenfb
qxl QXL VGA
virtio Virtio VG
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-id:
20190412152713.16018-3-marcandre.lureau@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
object_class_by_name(ti->class_names[1]);
}
object_class_by_name(ti->class_names[1]);
}
-static void select_vgahw(const char *p)
+static const char *
+get_default_vga_model(const MachineClass *machine_class)
+{
+ if (machine_class->default_display) {
+ return machine_class->default_display;
+ } else if (vga_interface_available(VGA_CIRRUS)) {
+ return "cirrus";
+ } else if (vga_interface_available(VGA_STD)) {
+ return "std";
+ }
+
+ return NULL;
+}
+
+static void select_vgahw(const MachineClass *machine_class, const char *p)
{
const char *opts;
int t;
{
const char *opts;
int t;
+ if (g_str_equal(p, "help")) {
+ const char *def = get_default_vga_model(machine_class);
+
+ for (t = 0; t < VGA_TYPE_MAX; t++) {
+ const VGAInterfaceInfo *ti = &vga_interfaces[t];
+
+ if (vga_interface_available(t) && ti->opt_name) {
+ printf("%-20s %s%s\n", ti->opt_name, ti->name ?: "",
+ g_str_equal(ti->opt_name, def) ? " (default)" : "");
+ }
+ }
+ exit(0);
+ }
+
assert(vga_interface_type == VGA_NONE);
for (t = 0; t < VGA_TYPE_MAX; t++) {
const VGAInterfaceInfo *ti = &vga_interfaces[t];
assert(vga_interface_type == VGA_NONE);
for (t = 0; t < VGA_TYPE_MAX; t++) {
const VGAInterfaceInfo *ti = &vga_interfaces[t];
/* If no default VGA is requested, the default is "none". */
if (default_vga) {
/* If no default VGA is requested, the default is "none". */
if (default_vga) {
- if (machine_class->default_display) {
- vga_model = machine_class->default_display;
- } else if (vga_interface_available(VGA_CIRRUS)) {
- vga_model = "cirrus";
- } else if (vga_interface_available(VGA_STD)) {
- vga_model = "std";
- }
+ vga_model = get_default_vga_model(machine_class);
- select_vgahw(vga_model);
+ select_vgahw(machine_class, vga_model);