add getnameinfo tests from GNU libc

test/inet/tst-getni1.c

@@ -0,0 +1,36 @@
+#include <netdb.h>
+#include <stdio.h>
+#include <sys/socket.h>
+
+static int
+do_test (void)
+{
+  int retval = 0;
+
+  struct sockaddr_in s;
+  s.sin_family = AF_INET;
+  s.sin_port = 80;
+  s.sin_addr.s_addr = INADDR_LOOPBACK;
+  int r = getnameinfo((struct sockaddr *) &s, sizeof (s), NULL, 0, NULL, 0,
+		      NI_NUMERICHOST | NI_NUMERICSERV);
+  printf("r = %d\n", r);
+  if (r != 0)
+    {
+      puts ("failed without NI_NAMEREQD");
+      retval = 1;
+    }
+
+  r = getnameinfo((struct sockaddr *) &s, sizeof (s), NULL, 0, NULL, 0,
+		  NI_NUMERICHOST | NI_NUMERICSERV | NI_NAMEREQD);
+  printf("r = %d\n", r);
+  if (r != EAI_NONAME)
+    {
+      puts ("did not fail with EAI_NONAME with NI_NAMEREQD set");
+      retval = 1;
+    }
+
+  return retval;
+}
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"

test/inet/tst-getni2.c

@@ -0,0 +1,41 @@
+#include <netdb.h>
+#include <stdio.h>
+#include <sys/socket.h>
+
+static int
+do_test (void)
+{
+  int retval = 0;
+
+  struct sockaddr_in6 s;
+  s.sin6_family = AF_INET6;
+  s.sin6_port = htons (80);
+  s.sin6_flowinfo = 0;
+  s.sin6_addr = (struct in6_addr) IN6ADDR_ANY_INIT;
+  s.sin6_scope_id = 0;
+  char buf[1000];
+  buf[0] = '\0';
+  int r = getnameinfo((struct sockaddr *) &s, sizeof (s), buf, sizeof (buf),
+		      NULL, 0, NI_NUMERICSERV);
+  printf("r = %d, buf = \"%s\"\n", r, buf);
+  if (r != 0)
+    {
+      puts ("failed without NI_NAMEREQD");
+      retval = 1;
+    }
+
+  buf[0] = '\0';
+  r = getnameinfo((struct sockaddr *) &s, sizeof (s), buf, sizeof (buf),
+		  NULL, 0, NI_NUMERICSERV | NI_NAMEREQD);
+  printf("r = %d, buf = \"%s\"\n", r, buf);
+  if (r != EAI_NONAME)
+    {
+      puts ("did not fail with EAI_NONAME with NI_NAMEREQD set");
+      retval = 1;
+    }
+
+  return retval;
+}
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"