lib/attr: add nla utility functions for s32

Signed-off-by: Thomas Haller <thaller@redhat.com>

1 files changed, 25 insertions, 0 deletions

diff --git a/lib/attr.c b/lib/attr.c
index 838d0a9..86284ee 100644
--- a/lib/attr.c
+++ b/lib/attr.c
@@ -610,6 +610,31 @@ uint16_t nla_get_u16(const struct nlattr *nla)
  * @see nla_put
  * @return 0 on success or a negative error code.
  */
+int nla_put_s32(struct nl_msg *msg, int attrtype, int32_t value)
+{
+	return nla_put(msg, attrtype, sizeof(int32_t), &value);
+}
+
+/**
+ * Return payload of 32 bit integer attribute.
+ * @arg nla		32 bit integer attribute.
+ *
+ * @return Payload as 32 bit integer.
+ */
+int32_t nla_get_s32(const struct nlattr *nla)
+{
+	return *(const int32_t *) nla_data(nla);
+}
+
+/**
+ * Add 32 bit integer attribute to netlink message.
+ * @arg msg		Netlink message.
+ * @arg attrtype	Attribute type.
+ * @arg value		Numeric value to store as payload.
+ *
+ * @see nla_put
+ * @return 0 on success or a negative error code.
+ */
 int nla_put_u32(struct nl_msg *msg, int attrtype, uint32_t value)
 {
 	return nla_put(msg, attrtype, sizeof(uint32_t), &value);