1 files changed, 61 insertions, 0 deletions
diff --git a/libc/getnameinfo.c b/libc/getnameinfo.c
new file mode 100644
index 0000000..2955bf4
--- /dev/null
+++ b/libc/getnameinfo.c
@@ -0,0 +1,61 @@
+#include <machine/rtems-bsd-user-space.h>
+
+/*
+ * Copyright (c) 2016 embedded brains GmbH.  All rights reserved.
+ *
+ *  embedded brains GmbH
+ *  Dornierstr. 4
+ *  82178 Puchheim
+ *  Germany
+ *  <rtems@embedded-brains.de>
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rtems.org/license/LICENSE.
+ */
+
+#include <netdb.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <stdio.h>
+
+int
+getnameinfo(const struct sockaddr *sa, socklen_t salen, char *node,
+    size_t nodelen, char *service, size_t servicelen, int flags)
+{
+	int af;
+	const struct sockaddr_in *sa_in = (const struct sockaddr_in *)sa;
+
+	(void) salen;
+
+	af = sa->sa_family;
+	if (af != AF_INET) {
+		return EAI_FAMILY;
+	}
+
+	if ((flags & NI_NAMEREQD) != 0) {
+		return EAI_NONAME;
+	}
+
+	/* FIXME: This return just the address value. Try resolving instead. */
+	if (node != NULL && nodelen > 0) {
+		if (inet_ntop(af, &sa_in->sin_addr, node, nodelen) == NULL) {
+			return EAI_FAIL;
+		}
+	}
+
+	if (service != NULL && servicelen > 0) {
+		in_port_t port = ntohs(sa_in->sin_port);
+		int rv;
+
+		rv = snprintf(service, servicelen, "%u", port);
+		if (rv <= 0) {
+			return EAI_FAIL;
+		} else if ((unsigned)rv >= servicelen) {
+			return EAI_OVERFLOW;
+		}
+	}
+
+	return 0;
+}