[libvirt] [PATCH v2 21/27] conf: Add helper to get pointer to a certain vCPU definition

[Peter Krempa]

Once more stuff will be moved into the vCPU data structure it will be
necessary to get a specific one in some ocasions. Add a helper that will
simplify this task.
---
 src/conf/domain_conf.c   | 15 +++++++++++++++
 src/conf/domain_conf.h   |  2 ++
 src/libvirt_private.syms |  1 +
 3 files changed, 18 insertions(+)

diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index d7c1a73..da533c6 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -1520,6 +1520,21 @@ virDomainDefGetVcpus(const virDomainDef *def)
 }


+virDomainVcpuInfoPtr
+virDomainDefGetVcpu(virDomainDefPtr def,
+                    unsigned int vcpu)
+{
+    if (vcpu > def->maxvcpus) {
+        virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
+                       _("vCPU '%u' is not present in domain definition"),
+                       vcpu);
+        return NULL;
+    }
+
+    return &def->vcpus[vcpu];
+}
+
+
 virDomainDiskDefPtr
 virDomainDiskDefNew(virDomainXMLOptionPtr xmlopt)
 {
diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
index ad6c401..a396253 100644
--- a/src/conf/domain_conf.h
+++ b/src/conf/domain_conf.h
@@ -2350,6 +2350,8 @@ bool virDomainDefHasVcpusOffline(const virDomainDef *def);
 unsigned int virDomainDefGetVcpusMax(const virDomainDef *def);
 int virDomainDefSetVcpus(virDomainDefPtr def, unsigned int vcpus);
 unsigned int virDomainDefGetVcpus(const virDomainDef *def);
+virDomainVcpuInfoPtr virDomainDefGetVcpu(virDomainDefPtr def, unsigned int vcpu)
+    ATTRIBUTE_RETURN_CHECK;

 unsigned long long virDomainDefGetMemoryInitial(const virDomainDef *def);
 void virDomainDefSetMemoryTotal(virDomainDefPtr def, unsigned long long size);
diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index 6fb36c3..c800e0e 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -217,6 +217,7 @@ virDomainDefGetDefaultEmulator;
 virDomainDefGetMemoryActual;
 virDomainDefGetMemoryInitial;
 virDomainDefGetSecurityLabelDef;
+virDomainDefGetVcpu;
 virDomainDefGetVcpus;
 virDomainDefGetVcpusMax;
 virDomainDefHasDeviceAddress;
-- 
2.6.2