Hurd: fix ttyname{,_r} errno result for non-ttys

ChangeLog

@@ -3,6 +3,13 @@
 	* hurd/hurdselect.c (_hurd_select): Round timeout up instead of down
 	when converting to ms.
 
+2010-06-06  Samuel Thibault  <samuel.thibault@ens-lyon.org>
+
+	* sysdeps/mach/hurd/ttyname.c (ttyname): Replace MIG_BAD_ID and
+	EOPNOTSUPP errors with ENOTTY.
+	* sysdeps/mach/hurd/ttyname_r.c (__ttyname_r): Replace MIG_BAD_ID and
+	EOPNOTSUPP errors with ENOTTY.
+
 2010-07-31  Ulrich Drepper  <drepper@redhat.com>
 
 	* sysdeps/x86_64/multiarch/Makefile [subdir=string] (sysdep_routines):

sysdeps/mach/hurd/ttyname.c

@@ -1,4 +1,4 @@
-/* Copyright (C) 1994, 1997 Free Software Foundation, Inc.
+/* Copyright (C) 1994, 1997, 2010 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -32,7 +32,11 @@ ttyname (int fd)
 
   nodename[0] = '\0';
   if (err = HURD_DPORT_USE (fd, __term_get_nodename (port, nodename)))
-    return __hurd_dfail (fd, err), NULL;
+    {
+      if (err == MIG_BAD_ID || err == EOPNOTSUPP)
+	err = ENOTTY;
+      return __hurd_dfail (fd, err), NULL;
+    }
 
   return nodename;
 }

sysdeps/mach/hurd/ttyname_r.c

@@ -34,7 +34,11 @@ __ttyname_r (int fd, char *buf, size_t buflen)
 
   nodename[0] = '\0';
   if (err = HURD_DPORT_USE (fd, __term_get_nodename (port, nodename)))
-    return __hurd_dfail (fd, err), errno;
+    {
+      if (err == MIG_BAD_ID || err == EOPNOTSUPP)
+        err = ENOTTY;
+      return __hurd_dfail (fd, err), errno;
+    }
 
   len = strlen (nodename) + 1;
   if (len > buflen)