qemu: Introduce QEMU_CAPS_SCREENDUMP_DEVICE

As of v2.12.0-rc0~32^2 QEMU is capable specifying which display
device and head should the screendump be taken from. Track this
capability so that we can use it later in our virDomainScreenshot
API.
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>

src/qemu/qemu_capabilities.c

@@ -486,6 +486,7 @@ VIR_ENUM_IMPL(virQEMUCaps, QEMU_CAPS_LAST,
 
               /* 300 */
               "sdl-gl",
+              "screendump_device",
     );
 
 
@@ -1269,6 +1270,7 @@ static struct virQEMUCapsStringFlags virQEMUCapsQMPSchemaQueries[] = {
     { "blockdev-add/arg-type/+iscsi/password-secret", QEMU_CAPS_ISCSI_PASSWORD_SECRET },
     { "blockdev-add/arg-type/+qcow2/encrypt/+luks/key-secret", QEMU_CAPS_QCOW2_LUKS },
     { "nbd-server-start/arg-type/tls-creds", QEMU_CAPS_NBD_TLS },
+    { "screendump/arg-type/device", QEMU_CAPS_SCREENDUMP_DEVICE },
 };
 
 typedef struct _virQEMUCapsObjectTypeProps virQEMUCapsObjectTypeProps;

src/qemu/qemu_capabilities.h

@@ -470,6 +470,7 @@ typedef enum { /* virQEMUCapsFlags grouping marker for syntax-check */
 
     /* 300 */
     QEMU_CAPS_SDL_GL, /* -sdl gl */
+    QEMU_CAPS_SCREENDUMP_DEVICE, /* screendump command accepts device & head */
 
     QEMU_CAPS_LAST /* this must always be the last item */
 } virQEMUCapsFlags;

tests/qemucapabilitiesdata/caps_2.12.0.aarch64.xml

@@ -162,6 +162,7 @@
   <flag name='qom-list-properties'/>
   <flag name='memory-backend-file.discard-data'/>
   <flag name='sdl-gl'/>
+  <flag name='screendump_device'/>
   <version>2011090</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>343099</microcodeVersion>

tests/qemucapabilitiesdata/caps_2.12.0.ppc64.xml

@@ -159,6 +159,7 @@
   <flag name='qom-list-properties'/>
   <flag name='memory-backend-file.discard-data'/>
   <flag name='sdl-gl'/>
+  <flag name='screendump_device'/>
   <version>2011090</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>419968</microcodeVersion>

tests/qemucapabilitiesdata/caps_2.12.0.s390x.xml

@@ -127,6 +127,7 @@
   <flag name='virtual-css-bridge.cssid-unrestricted'/>
   <flag name='vfio-ccw'/>
   <flag name='sdl-gl'/>
+  <flag name='screendump_device'/>
   <version>2012000</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>371055</microcodeVersion>

tests/qemucapabilitiesdata/caps_2.12.0.x86_64.xml

@@ -200,6 +200,7 @@
   <flag name='qom-list-properties'/>
   <flag name='memory-backend-file.discard-data'/>
   <flag name='sdl-gl'/>
+  <flag name='screendump_device'/>
   <version>2011090</version>
   <kvmVersion>0</kvmVersion>
   <microcodeVersion>390813</microcodeVersion>