Add a helper for parsing long long values from XML properties with
semantics like virXMLPropInt.
Signed-off-by: Peter Krempa <pkrempa@xxxxxxxxxx>
---
src/libvirt_private.syms | 1 +
src/util/virxml.c | 64 ++++++++++++++++++++++++++++++++++++++++
src/util/virxml.h | 9 ++++++
3 files changed, 74 insertions(+)
diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index 01bb349e05..5be40dbefe 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -3682,6 +3682,7 @@ virXMLPickShellSafeComment;
virXMLPropEnum;
virXMLPropEnumDefault;
virXMLPropInt;
+virXMLPropLongLong;
virXMLPropString;
virXMLPropStringRequired;
virXMLPropTristateBool;
diff --git a/src/util/virxml.c b/src/util/virxml.c
index b94af9c7a3..0a91fd237e 100644
--- a/src/util/virxml.c
+++ b/src/util/virxml.c
@@ -750,6 +750,70 @@ virXMLPropUInt(xmlNodePtr node,
}
+/**
+ * virXMLPropLongLong:
+ * @node: XML dom node pointer
+ * @name: Name of the property (attribute) to get
+ * @base: Number base, see strtol
+ * @flags: Bitwise or of virXMLPropFlags
+ * @result: The returned value
+ * @defaultResult: default value of @result in case the property is not found
+ *
+ * Convenience function to return value of a long long attribute.
+ *
+ * Returns 1 in case of success in which case @result is set,
+ * or 0 if the attribute is not present,
+ * or -1 and reports an error on failure.
+ */
+int
+virXMLPropLongLong(xmlNodePtr node,
+ const char* name,
+ int base,
+ virXMLPropFlags flags,
+ long long *result,
+ long long defaultResult)
+{
+ g_autofree char *tmp = NULL;
+ long long val;
+
+ *result = defaultResult;
+
+ if (!(tmp = virXMLPropString(node, name))) {
+ if (!(flags & VIR_XML_PROP_REQUIRED))
+ return 0;
+
+ virReportError(VIR_ERR_XML_ERROR,
+ _("Missing required attribute '%s' in element '%s'"),
+ name, node->name);
+ return -1;
+ }
+
+ if (virStrToLong_ll(tmp, NULL, base, &val) < 0) {
+ virReportError(VIR_ERR_XML_ERROR,
+ _("Invalid value for attribute '%s' in element '%s': '%s'. Expected long long integer value"),
+ name, node->name, tmp);
+ return -1;
+ }
+
+ if ((flags & VIR_XML_PROP_NONNEGATIVE) && (val < 0)) {
+ virReportError(VIR_ERR_XML_ERROR,
+ _("Invalid value for attribute '%s' in element '%s': '%s'. Expected non-negative value"),
+ name, node->name, tmp);
+ return -1;
+ }
+
+ if ((flags & VIR_XML_PROP_NONZERO) && (val == 0)) {
+ virReportError(VIR_ERR_XML_ERROR,
+ _("Invalid value for attribute '%s' in element '%s': Zero is not permitted"),
+ name, node->name);
+ return -1;
+ }
+
+ *result = val;
+ return 1;
+}
+
+
/**
* virXMLPropULongLong:
* @node: XML dom node pointer
diff --git a/src/util/virxml.h b/src/util/virxml.h
index 42d3740c58..3b00d20ea9 100644
--- a/src/util/virxml.h
+++ b/src/util/virxml.h
@@ -141,6 +141,15 @@ virXMLPropUInt(xmlNodePtr node,
unsigned int *result)
ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_NONNULL(5);
+int
+virXMLPropLongLong(xmlNodePtr node,
+ const char* name,
+ int base,
+ virXMLPropFlags flags,
+ long long *result,
+ long long defaultResult)
+ ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_NONNULL(5);
+
int
virXMLPropULongLong(xmlNodePtr node,
const char* name,
--
2.37.1
