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.

diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index b4b72c073417dc28172924f87c95ca8d79798a53..d5c3b9abb54e29ce5f470194fda7d98aa4bbe16c 100644 (file)
--- 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 6594715e5e56ce3dbbf41b121e32037cf93b4d68..5780180a94ef5180c83bb7cb20bc9a3807daaefe 100644 (file)
--- 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 24382a0a6b3cf03c8fbec0b8ad32dea583649963..ecd806c93f842150baea4676cb5611fd2a7e7438 100644 (file)
--- 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__ */