[PATCH v3 3/9] virstoragefile: Add virStorageSourceSetBackingStore

[Matthias Gatto <matthias.gatto@xxxxxxxxxxxx>]

As explained for virStorageSourceGetBackingStore, quorum allows
multiple backing store, this make the operation to set bs complex
because we have to check if the backingStore is used as an array
or a pointer, and set it differently in both case.

In order to help the manipulation of backing store, I've added a
function virStorageSourceSetBackingStore.

For now virStorageSourceSetBackingStore don't handle the case where
we have more than one backing store in virStorageSource.

Signed-off-by: Matthias Gatto <matthias.gatto@xxxxxxxxxxxx>
---
 src/libvirt_private.syms  |  1 +
 src/util/virstoragefile.c | 10 ++++++++++
 src/util/virstoragefile.h |  3 +++
 3 files changed, 14 insertions(+)

diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index 30b7429..c08f6c8 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -2054,6 +2054,7 @@ virStorageSourceParseRBDColonString;
 virStorageSourcePoolDefFree;
 virStorageSourcePoolModeTypeFromString;
 virStorageSourcePoolModeTypeToString;
+virStorageSourceSetBackingStore;
 virStorageTypeFromString;
 virStorageTypeToString;
 
diff --git a/src/util/virstoragefile.c b/src/util/virstoragefile.c
index f78f74c..0cc7c5e 100644
--- a/src/util/virstoragefile.c
+++ b/src/util/virstoragefile.c
@@ -1806,6 +1806,16 @@ virStorageSourceGetBackingStore(const virStorageSource *src,
 }
 
 
+bool
+virStorageSourceSetBackingStore(virStorageSourcePtr src,
+                                virStorageSourcePtr backingStore,
+                                size_t pos ATTRIBUTE_UNUSED)
+{
+    src->backingStore = backingStore;
+    return src->backingStore;
+}
+
+
 /**
  * virStorageSourcePtr:
  *
diff --git a/src/util/virstoragefile.h b/src/util/virstoragefile.h
index c37ddcf..85b8d6e 100644
--- a/src/util/virstoragefile.h
+++ b/src/util/virstoragefile.h
@@ -289,6 +289,9 @@ struct _virStorageSource {
 #  define DEV_BSIZE 512
 # endif
 
+bool virStorageSourceSetBackingStore(virStorageSourcePtr src,
+                                                    virStorageSourcePtr backingStore,
+                                                    size_t pos);
 virStorageSourcePtr virStorageSourceGetBackingStore(const virStorageSource *src,
                                                     size_t pos);
 
-- 
1.8.3.1

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