1 files changed, 39 insertions, 0 deletions
diff --git a/sysdeps/posix/ctermid.c b/sysdeps/posix/ctermid.c
new file mode 100644
index 0000000000..8e96694841
--- /dev/null
+++ b/sysdeps/posix/ctermid.c
@@ -0,0 +1,39 @@
+/* Copyright (C) 1991 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
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library 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
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#include <ansidecl.h>
+#include <stdio.h>
+#include <string.h>
+
+
+/* Return the name of the controlling terminal.
+   If S is not NULL, the name is copied into it (it should be at
+   least L_ctermid bytes long), otherwise a static buffer is used.  */
+char *
+DEFUN(ctermid, (s), char *s)
+{
+  static char name[L_ctermid];
+
+  if (name[0] == '\0')
+    (void) strcpy(name, "/dev/tty");
+
+  if (s == NULL)
+    return(name);
+
+  return(strcpy(s, name));
+}