[PATCH v1 20/31] virstoragefile: Introduce virStorageSourceChainHasNVMe

[Michal Privoznik <mprivozn@xxxxxxxxxx>]

This function will return true if there's a storage source of
type VIR_STORAGE_TYPE_NVME, or false otherwise.

Signed-off-by: Michal Privoznik <mprivozn@xxxxxxxxxx>
---
 src/libvirt_private.syms  |  1 +
 src/util/virstoragefile.c | 14 ++++++++++++++
 src/util/virstoragefile.h |  2 ++
 3 files changed, 17 insertions(+)

diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index bc6583562a..5b7aa58dd8 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -2994,6 +2994,7 @@ virStoragePRDefIsManaged;
 virStoragePRDefParseXML;
 virStorageSourceBackingStoreClear;
 virStorageSourceChainHasManagedPR;
+virStorageSourceChainHasNVMe;
 virStorageSourceClear;
 virStorageSourceCopy;
 virStorageSourceFindByNodeName;
diff --git a/src/util/virstoragefile.c b/src/util/virstoragefile.c
index 18aa33fe05..a9ceb697cf 100644
--- a/src/util/virstoragefile.c
+++ b/src/util/virstoragefile.c
@@ -2157,6 +2157,20 @@ virStorageSourceNVMeDefFree(virStorageSourceNVMeDefPtr def)
 }
 
 
+bool
+virStorageSourceChainHasNVMe(const virStorageSource *src)
+{
+    const virStorageSource *n;
+
+    for (n = src; virStorageSourceIsBacking(n); n = n->backingStore) {
+        if (n->type == VIR_STORAGE_TYPE_NVME)
+            return true;
+    }
+
+    return false;
+}
+
+
 virSecurityDeviceLabelDefPtr
 virStorageSourceGetSecurityLabelDef(virStorageSourcePtr src,
                                     const char *model)
diff --git a/src/util/virstoragefile.h b/src/util/virstoragefile.h
index a1294ea608..8afd5d60cb 100644
--- a/src/util/virstoragefile.h
+++ b/src/util/virstoragefile.h
@@ -431,6 +431,8 @@ virStorageSourceChainHasManagedPR(virStorageSourcePtr src);
 void virStorageSourceNVMeDefFree(virStorageSourceNVMeDefPtr def);
 VIR_DEFINE_AUTOPTR_FUNC(virStorageSourceNVMeDef, virStorageSourceNVMeDefFree);
 
+bool virStorageSourceChainHasNVMe(const virStorageSource *src);
+
 virSecurityDeviceLabelDefPtr
 virStorageSourceGetSecurityLabelDef(virStorageSourcePtr src,
                                     const char *model);
-- 
2.21.0

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