1 files changed, 42 insertions, 0 deletions
diff --git a/libgpg-error-1.9/src/code-to-errno.c b/libgpg-error-1.9/src/code-to-errno.c
new file mode 100644
index 0000000..5873aad
--- /dev/null
+++ b/libgpg-error-1.9/src/code-to-errno.c
@@ -0,0 +1,42 @@
+/* code-to-errno.c - Mapping error codes to errnos.
+   Copyright (C) 2003 g10 Code GmbH
+
+   This file is part of libgpg-error.
+
+   libgpg-error is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public License
+   as published by the Free Software Foundation; either version 2.1 of
+   the License, or (at your option) any later version.
+ 
+   libgpg-error 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
+   Lesser General Public License for more details.
+ 
+   You should have received a copy of the GNU Lesser General Public
+   License along with libgpg-error; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+   02111-1307, USA.  */
+
+#if HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <gpg-error.h>
+
+#include "code-to-errno.h"
+
+/* Retrieve the system error for the error code CODE.  This returns 0
+   if CODE is not a system error code.  */
+int
+gpg_err_code_to_errno (gpg_err_code_t code)
+{
+  if (!(code & GPG_ERR_SYSTEM_ERROR))
+    return 0;
+  code &= ~GPG_ERR_SYSTEM_ERROR;
+
+  if (code < sizeof (err_code_to_errno) / sizeof (err_code_to_errno[0]))
+    return err_code_to_errno[code];
+  else
+    return 0;
+}