forkpty, openpty: prefer glibc's const-safe prototype

[gnulib.git] / lib / openpty.c

diff --git a/lib/openpty.c b/lib/openpty.c
new file mode 100644 (file)
index 0000000..e7eb46d
--- /dev/null
+++ b/lib/openpty.c
@@ -0,0 +1,35 @@
+/* Open a pseudo-terminal descriptor.
+   Copyright (C) 2010 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program 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 General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <pty.h>
+
+#if HAVE_DECL_OPENPTY
+# undef openpty
+int
+rpl_openpty (int *amaster, int *aslave, char *name, struct termios const *termp,
+         struct winsize const *winp)
+{
+  /* Cast away const, for implementations with weaker prototypes.  */
+  return openpty (amaster, aslave, name, (struct termios *) termp,
+                  (struct winsize *) winp);
+}
+#else
+# error openpty has not been ported to your system; \
+  report this to bug-gnulib@gnu.org for help
+#endif