2001-12-10  Thorsten Kukuk  <kukuk@suse.de>

	* sysdeps/unix/sysv/linux/grantpt.c: Change ENOTTY errors
	of pts_name to EINVAL.
	* sysdeps/unix/sysv/linux/ptsname.c (__ptsname_r): Don't
	overwrite errno value of isatty call (correct one is needed
	by grantpt).

--- sysdeps/unix/sysv/linux/grantpt.c
+++ sysdeps/unix/sysv/linux/grantpt.c	2001/12/10 09:31:15
@@ -1,4 +1,4 @@
-/* Copyright (C) 1998, 1999 Free Software Foundation, Inc.
+/* Copyright (C) 1998, 1999, 2001 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
@@ -16,6 +16,7 @@
    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
    02111-1307 USA.  */
 
+#include <errno.h>
 #include <limits.h>
 #include <stdlib.h>
 #include <sys/statfs.h>
@@ -46,7 +47,11 @@
   char *buf = _buf;
 
   if (pts_name (fd, &buf, sizeof (_buf)))
-    return -1;
+    {
+       if (errno == ENOTTY)
+         __set_errno (EINVAL);
+       return -1;
+    }
   
   if (__statfs (buf, &fsbuf) < 0)
     return -1;
--- sysdeps/unix/sysv/linux/ptsname.c
+++ sysdeps/unix/sysv/linux/ptsname.c	2001/12/10 09:31:15
@@ -85,8 +85,7 @@
 
   if (!__isatty (fd))
     {
-      __set_errno (ENOTTY);
-      return ENOTTY;
+      return errno;
     }
 
 #ifdef TIOCGPTN