virml: Introduce VIR_XML_PROP_NONNEGATIVE flag

For easier attribute parsing we have virXMLProp*() family of
functions. These accept flags through which a caller can pose
some conditions onto the attribute value, for instance:
VIR_XML_PROP_NONZERO when the attribute may not be zero, etc.

What we are missing is VIR_XML_PROP_NONNEGATIVE when the
attribute value may be non-negative. Obviously, this flag makes
sense only for some members of the virXMLProp*() family.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
This commit is contained in:
Michal Privoznik 2022-03-07 16:44:46 +01:00
parent ae2dabe5ed
commit 95c95f1b75
2 changed files with 10 additions and 0 deletions

View File

@ -643,6 +643,13 @@ virXMLPropInt(xmlNodePtr node,
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"),

View File

@ -38,6 +38,9 @@ typedef enum {
VIR_XML_PROP_NONE = 0,
VIR_XML_PROP_REQUIRED = 1 << 0, /* Attribute may not be absent */
VIR_XML_PROP_NONZERO = 1 << 1, /* Attribute may not be zero */
VIR_XML_PROP_NONNEGATIVE = 1 << 2, /* Attribute may not be negative, makes
sense only for some virXMLProp*()
functions. */
} virXMLPropFlags;