1 files changed, 55 insertions, 0 deletions
diff --git a/locale/duplocale.c b/locale/duplocale.c
new file mode 100644
index 0000000000..494c2ec829
--- /dev/null
+++ b/locale/duplocale.c
@@ -0,0 +1,55 @@
+/* Duplicate handle for selection of locales.
+   Copyright (C) 1997 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
+
+   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 <locale.h>
+#include <libc-lock.h>
+#include <stdlib.h>
+
+#include <localeinfo.h>
+
+
+/* Lock for protecting global data.  */
+__libc_lock_define (extern , __libc_setlocale_lock)
+
+
+__locale_t
+__duplocale (__locale_t dataset)
+{
+  __locale_t result;
+
+  /* We modify global data.  */
+  __libc_lock_lock (__libc_setlocale_lock);
+
+  /* Get memory.  */
+  result = (__locale_t) malloc (sizeof (struct __locale_t));
+  if (result != NULL)
+    {
+      int cnt;
+      for (cnt = 0; cnt < LC_ALL; ++cnt)
+	{
+	  result->__locales[cnt] = dataset->__locales[cnt];
+	  if (result->__locales[cnt]->usage_count != MAX_USAGE_COUNT)
+	    ++result->__locales[cnt]->usage_count;
+	}
+    }
+
+  /* It's done.  */
+  __libc_lock_unlock (__libc_setlocale_lock);
+}