[PATCH v3 4/9] conf: add 3 functions for insert, remove and find a RNG device

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the 3 functions are:
virDomainRNGInsert: Insert a RNG device to vm->def.
virDomainRNGRemove: remove a RNG device in vm->def.
virDomainRNGFind: find a RNG device in vm->def.

Signed-off-by: Luyao Huang <lhuang@xxxxxxxxxx>
---
 src/conf/domain_conf.c   | 42 ++++++++++++++++++++++++++++++++++++++++++
 src/conf/domain_conf.h   |  6 ++++++
 src/libvirt_private.syms |  3 +++
 3 files changed, 51 insertions(+)

diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index 81e4030..659864c 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -12095,6 +12095,48 @@ virDomainRNGEquals(virDomainRNGDefPtr src,
     return false;
 }
 
+int
+virDomainRNGInsert(virDomainDefPtr vmdef,
+                   virDomainRNGDefPtr rng)
+{
+    return VIR_APPEND_ELEMENT(vmdef->rngs, vmdef->nrngs, rng);
+}
+
+virDomainRNGDefPtr
+virDomainRNGRemove(virDomainDefPtr vmdef,
+                   virDomainRNGDefPtr rng)
+{
+    virDomainRNGDefPtr ret;
+    size_t i;
+
+    for (i = 0; i < vmdef->nrngs; i++) {
+        ret = vmdef->rngs[i];
+
+        if (virDomainRNGEquals(ret, rng)) {
+            VIR_DELETE_ELEMENT(vmdef->rngs, i, vmdef->nrngs);
+            return ret;
+        }
+    }
+
+    return NULL;
+}
+
+virDomainRNGDefPtr
+virDomainRNGFind(virDomainDefPtr vmdef,
+                 virDomainRNGDefPtr rng)
+{
+    virDomainRNGDefPtr ret;
+    size_t i;
+
+    for (i = 0; i < vmdef->nrngs; i++) {
+        ret = vmdef->rngs[i];
+
+        if (virDomainRNGEquals(ret, rng))
+            return ret;
+    }
+    return NULL;
+}
+
 char *
 virDomainDefGetDefaultEmulator(virDomainDefPtr def,
                                virCapsPtr caps)
diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
index b3843e8..10cb09b 100644
--- a/src/conf/domain_conf.h
+++ b/src/conf/domain_conf.h
@@ -2655,6 +2655,12 @@ virDomainChrRemove(virDomainDefPtr vmdef,
 
 bool virDomainRNGEquals(virDomainRNGDefPtr src,
                         virDomainRNGDefPtr tgt);
+int virDomainRNGInsert(virDomainDefPtr vmdef,
+                       virDomainRNGDefPtr rng);
+virDomainRNGDefPtr virDomainRNGRemove(virDomainDefPtr vmdef,
+                                      virDomainRNGDefPtr rng);
+virDomainRNGDefPtr virDomainRNGFind(virDomainDefPtr vmdef,
+                                    virDomainRNGDefPtr rng);
 
 int virDomainSaveXML(const char *configDir,
                      virDomainDefPtr def,
diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index 653655f..a635652 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -378,7 +378,10 @@ virDomainRedirdevBusTypeFromString;
 virDomainRedirdevBusTypeToString;
 virDomainRNGBackendTypeToString;
 virDomainRNGEquals;
+virDomainRNGFind;
+virDomainRNGInsert;
 virDomainRNGModelTypeToString;
+virDomainRNGRemove;
 virDomainRunningReasonTypeFromString;
 virDomainRunningReasonTypeToString;
 virDomainSaveConfig;
-- 
1.8.3.1

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