1 files changed, 76 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/getpt.c b/sysdeps/unix/sysv/linux/getpt.c
new file mode 100644
index 0000000000..8eea2ffa82
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/getpt.c
@@ -0,0 +1,76 @@
+/* Copyright (C) 1998 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Zack Weinberg <zack@rabi.phys.columbia.edu>, 1998.
+
+   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., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <sys/types.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <stdlib.h>
+
+#include "pty-internal.h"
+
+/* Per Documentation/devices.txt: pty masters are /dev/pty[p-za-e][0-9a-f].
+   These strings are used also in ptsname.c. */
+const char __ptyname1[] = "pqrstuvwxyzabcde";
+const char __ptyname2[] = "0123456789abcdef";
+
+/* Open the master side of a pseudoterminal and return its file
+   descriptor, or -1 on error.  Linux version. */
+int
+__getpt ()
+{
+  int fd;
+  const char *i, *j;
+  static int have_dev_ptmx = 1;
+  char namebuf[PTYNAMELEN];
+
+  /* The new way:  */
+  if (have_dev_ptmx)
+    {
+      fd = open ("/dev/ptmx", O_RDWR);
+      if (fd != -1)
+	return fd;
+      else
+	{
+	  if (errno == ENOENT || errno == ENODEV)
+	    have_dev_ptmx = 0;
+	  else
+	    return -1;
+	}
+    }
+
+  /* The old way: */
+  strcpy (namebuf, "/dev/pty");
+  namebuf[10] = '\0';
+  for (i = __ptyname1; *i; ++i)
+    {
+      namebuf[8] = *i;
+      for (j = __ptyname2; *j; ++j)
+        {
+	  namebuf[9] = *j;
+	  fd = open (namebuf, O_RDWR);
+	  if (fd != -1)
+	    return fd;
+	  if (errno != EIO)
+	    return -1;
+        }
+    }
+  __set_errno (ENFILE);
+  return -1;
+}
+weak_alias (__getpt, getpt)