[libvirt] [PATCH 08/23] qemu: domain: Add helper to generate indexed backing store names
The code is currently simple, but if we later add node names, it will be
necessary to generate the names based on the node name. Add a helper so
that there's a central point to fix once we add self-generated node
names.
---
src/qemu/qemu_domain.c | 22 ++++++++++++++++++++++
src/qemu/qemu_domain.h | 4 ++++
2 files changed, 26 insertions(+)
diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c
index 95ea63615..0c633af33 100644
--- a/src/qemu/qemu_domain.c
+++ b/src/qemu/qemu_domain.c
@@ -8412,3 +8412,25 @@ qemuDomainDiskLookupByNodename(virDomainDefPtr def,
return NULL;
}
+
+
+/**
+ * qemuDomainDiskBackingStoreGetName:
+ *
+ * Creates a name using the indexed syntax (vda[1])for the given backing store
+ * entry for a disk.
+ */
+char *
+qemuDomainDiskBackingStoreGetName(virDomainDiskDefPtr disk,
+ virStorageSourcePtr src ATTRIBUTE_UNUSED,
+ unsigned int idx)
+{
+ char *ret = NULL;
+
+ if (idx)
+ ignore_value(virAsprintf(&ret, "%s[%d]", disk->dst, idx));
+ else
+ ignore_value(VIR_STRDUP(ret, disk->dst));
+
+ return ret;
+}
diff --git a/src/qemu/qemu_domain.h b/src/qemu/qemu_domain.h
index 15eb72a5c..a07d671a9 100644
--- a/src/qemu/qemu_domain.h
+++ b/src/qemu/qemu_domain.h
@@ -858,4 +858,8 @@ virDomainDiskDefPtr qemuDomainDiskLookupByNodename(virDomainDefPtr
def,
virStorageSourcePtr *src,
unsigned int *idx);
+char *qemuDomainDiskBackingStoreGetName(virDomainDiskDefPtr disk,
+ virStorageSourcePtr src,
+ unsigned int idx);
+
#endif /* __QEMU_DOMAIN_H__ */
--
2.12.0