[libvirt] [PATCH 5/8] domcaps: Add function for initializing domain caps as unsupported

[Peter Krempa]

For future extensions of the domain caps it's useful to have a single
point that initializes all capabilities as unsupported by a driver. The
driver then can enable specific ones.

Signed-off-by: Peter Krempa <pkrempa at redhat.com>
---
 src/bhyve/bhyve_capabilities.c |  4 +---
 src/conf/domain_capabilities.c | 14 ++++++++++++++
 src/conf/domain_capabilities.h |  2 ++
 src/libvirt_private.syms       |  1 +
 src/libxl/libxl_capabilities.c |  5 ++---
 5 files changed, 20 insertions(+), 6 deletions(-)

diff --git a/src/bhyve/bhyve_capabilities.c b/src/bhyve/bhyve_capabilities.c
index c04a475375..f80cf7be62 100644
--- a/src/bhyve/bhyve_capabilities.c
+++ b/src/bhyve/bhyve_capabilities.c
@@ -116,9 +116,7 @@ virBhyveDomainCapsFill(virDomainCapsPtr caps,
     }

     caps->hostdev.supported = VIR_TRISTATE_BOOL_NO;
-    caps->iothreads = VIR_TRISTATE_BOOL_NO;
-    caps->vmcoreinfo = VIR_TRISTATE_BOOL_NO;
-    caps->genid = VIR_TRISTATE_BOOL_NO;
+    virDomainCapsFeaturesInitUnsupported(caps);
     caps->gic.supported = VIR_TRISTATE_BOOL_NO;

     return 0;
diff --git a/src/conf/domain_capabilities.c b/src/conf/domain_capabilities.c
index 8d0a0c121c..39acad00f1 100644
--- a/src/conf/domain_capabilities.c
+++ b/src/conf/domain_capabilities.c
@@ -316,6 +316,20 @@ virDomainCapsEnumClear(virDomainCapsEnumPtr capsEnum)
 }


+/**
+ * @caps: domain caps
+ *
+ * Initializes all features in 'caps' as unsupported.
+ */
+void
+virDomainCapsFeaturesInitUnsupported(virDomainCapsPtr caps)
+{
+    caps->iothreads = VIR_TRISTATE_BOOL_NO;
+    caps->vmcoreinfo = VIR_TRISTATE_BOOL_NO;
+    caps->genid = VIR_TRISTATE_BOOL_NO;
+}
+
+
 static int
 virDomainCapsEnumFormat(virBufferPtr buf,
                         const virDomainCapsEnum *capsEnum,
diff --git a/src/conf/domain_capabilities.h b/src/conf/domain_capabilities.h
index 6b27eac11f..9baaea8f60 100644
--- a/src/conf/domain_capabilities.h
+++ b/src/conf/domain_capabilities.h
@@ -226,6 +226,8 @@ int virDomainCapsEnumSet(virDomainCapsEnumPtr capsEnum,
                          unsigned int *values);
 void virDomainCapsEnumClear(virDomainCapsEnumPtr capsEnum);

+void virDomainCapsFeaturesInitUnsupported(virDomainCapsPtr caps);
+
 char * virDomainCapsFormat(const virDomainCaps *caps);

 int virDomainCapsDeviceDefValidate(const virDomainCaps *caps,
diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index 4d0d03c580..1432f1697a 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -202,6 +202,7 @@ virDomainCapsCPUUsableTypeToString;
 virDomainCapsDeviceDefValidate;
 virDomainCapsEnumClear;
 virDomainCapsEnumSet;
+virDomainCapsFeaturesInitUnsupported;
 virDomainCapsFormat;
 virDomainCapsNew;
 virSEVCapabilitiesFree;
diff --git a/src/libxl/libxl_capabilities.c b/src/libxl/libxl_capabilities.c
index fe792e9a82..55f6b490ec 100644
--- a/src/libxl/libxl_capabilities.c
+++ b/src/libxl/libxl_capabilities.c
@@ -764,9 +764,8 @@ libxlMakeDomainCapabilities(virDomainCapsPtr domCaps,
         libxlMakeDomainDeviceHostdevCaps(hostdev) < 0)
         return -1;

-    domCaps->iothreads = VIR_TRISTATE_BOOL_NO;
-    domCaps->vmcoreinfo = VIR_TRISTATE_BOOL_NO;
-    domCaps->genid = VIR_TRISTATE_BOOL_NO;
+    virDomainCapsFeaturesInitUnsupported(domCaps);
+
     domCaps->gic.supported = VIR_TRISTATE_BOOL_NO;

     return 0;
-- 
2.23.0