From cd31709351142a2770d2b9baa7755eaed672710a Mon Sep 17 00:00:00 2001
From: Peter Krempa <pkrempa@redhat.com>
Date: Wed, 13 Dec 2017 17:04:54 +0100
Subject: [PATCH] util: storage: Add helpers to parse and format relPath into
 privateData

This will be the first private piece of data that will need to be stored
in the XML for some drivers. Add helpers which will do it.
---
 src/libvirt_private.syms  |  2 ++
 src/util/virstoragefile.c | 20 ++++++++++++++++++++
 src/util/virstoragefile.h |  8 ++++++++
 3 files changed, 30 insertions(+)

diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index b4b72c0734..d5c3b9abb5 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -2734,6 +2734,8 @@ virStorageSourceParseRBDColonString;
 virStorageSourcePoolDefFree;
 virStorageSourcePoolModeTypeFromString;
 virStorageSourcePoolModeTypeToString;
+virStorageSourcePrivateDataFormatRelPath;
+virStorageSourcePrivateDataParseRelPath;
 virStorageSourceUpdateBackingSizes;
 virStorageSourceUpdateCapacity;
 virStorageSourceUpdatePhysicalSize;
diff --git a/src/util/virstoragefile.c b/src/util/virstoragefile.c
index 6594715e5e..5780180a94 100644
--- a/src/util/virstoragefile.c
+++ b/src/util/virstoragefile.c
@@ -4086,3 +4086,23 @@ virStorageSourceNetworkAssignDefaultPorts(virStorageSourcePtr src)
             src->hosts[i].port = virStorageSourceNetworkDefaultPort(src->protocol);
     }
 }
+
+
+int
+virStorageSourcePrivateDataParseRelPath(xmlXPathContextPtr ctxt,
+                                        virStorageSourcePtr src)
+{
+    src->relPath = virXPathString("string(./relPath)", ctxt);
+    return 0;
+}
+
+
+int
+virStorageSourcePrivateDataFormatRelPath(virStorageSourcePtr src,
+                                         virBufferPtr buf)
+{
+    if (src->relPath)
+        virBufferEscapeString(buf, "<relPath>%s</relPath>\n", src->relPath);
+
+    return 0;
+}
diff --git a/src/util/virstoragefile.h b/src/util/virstoragefile.h
index 24382a0a6b..ecd806c93f 100644
--- a/src/util/virstoragefile.h
+++ b/src/util/virstoragefile.h
@@ -441,4 +441,12 @@ bool
 virStorageSourceHasBacking(const virStorageSource *src);
 
 
+int
+virStorageSourcePrivateDataParseRelPath(xmlXPathContextPtr ctxt,
+                                        virStorageSourcePtr src);
+int
+virStorageSourcePrivateDataFormatRelPath(virStorageSourcePtr src,
+                                         virBufferPtr buf);
+
+
 #endif /* __VIR_STORAGE_FILE_H__ */