--- /dev/null
+/* ttyname_r.c - A ttyname_r() replacement.
+ Copyright (C) 2003, 2004 g10 Code GmbH
+
+ This file is part of GPGME.
+
+ GPGME is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as
+ published by the Free Software Foundation; either version 2.1 of
+ the License, or (at your option) any later version.
+
+ GPGME is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with this program; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ 02111-1307, USA. */
+
+#if HAVE_CONFIG_H
+#include <config.h>
+#endif
+#include <stdlib.h>
+#include <errno.h>
+#include <string.h>
+#include <unistd.h>
+
+\f
+#warning ttyname is not thread-safe, and ttyname_r is missing
+
+int
+ttyname_r (int fd, char *buf, size_t buflen)
+{
+ char *tty;
+
+ tty = ttyname (fd);
+ if (!tty)
+ return errno;
+
+ strncpy (buf, tty, buflen);
+ buf[buflen - 1] = '\0';
+ return (strlen (tty) >= buflen) ? ERANGE : 0;
+}