getlogin_r-tests: allow errno == ENXIO or ENOENT

* tests/test-getlogin.c (main): Skip tests if getlogin fails
with errno == ENXIO (No controlling tty).
* tests/test-getlogin_r.c (main): Skip tests if getlogin_r fails
with errno == ENOENT.  This was reported to happen in various
situations on GNU/Linux.

2 files changed, 9 insertions, 0 deletions

diff --git a/tests/test-getlogin.c b/tests/test-getlogin.c
index d86fec2758..f7903ae1c9 100644
--- a/tests/test-getlogin.c
+++ b/tests/test-getlogin.c
@@ -49,6 +49,7 @@ main (void)
       /* getlogin() fails when stdin is not connected to a tty.  */
       ASSERT (errno == ENOTTY
               || errno == EINVAL /* seen on Linux/SPARC */
+              || errno == ENXIO
              );
 #if !defined __hpux /* On HP-UX 11.11 it fails anyway.  */
       ASSERT (! isatty (0));
diff --git a/tests/test-getlogin_r.c b/tests/test-getlogin_r.c
index 043aafbb3d..45b6e7a476 100644
--- a/tests/test-getlogin_r.c
+++ b/tests/test-getlogin_r.c
@@ -40,9 +40,17 @@ main (void)
   err = getlogin_r (buf, sizeof (buf));
   if (err != 0)
     {
+      if (errno == ENOENT)
+        {
+          /* This can happen on GNU/Linux.  */
+          fprintf (stderr, "Skipping test: no entry in utmp file.\n");
+          return 77;
+        }
+
       /* getlogin_r() fails when stdin is not connected to a tty.  */
       ASSERT (err == ENOTTY
               || errno == EINVAL /* seen on Linux/SPARC */
+              || errno == ENXIO
              );
 #if !defined __hpux /* On HP-UX 11.11 it fails anyway.  */
       ASSERT (! isatty (0));