2003-06-01 Marcus Brinkmann <marcus@g10code.de>

	* src/mkerrcodes1.awk: New file.
	* src/mkerrcodes2.awk: New file.
	* src/mkerrnos.awk: New file.
	* src/errnos.in: New file.
	* src/code-from-errno.c: New file.
	* src/code-to-errno.c: New file.
	* src/Makefile.am (libgpg_error_la_SOURCES): Remove err-sources.h
	and err-codes.h.  Add code-to-errno.c and code-from-errno.c.
	(code-to-errno.h): New target.
	(code-from-errno.h): Likewise.
	(EXTRA_DIST): Add mkerrnos.awk, errnos.in, and mkerrcodes1.awk.
	(BUILT_SOURCES): Add code-to-errno.h and code-from-errno.h.
	(CLEANFILES): Likewise.
	* src/strerror.c (gpg_strerror): Use strerror for system errors.
	* src/err-codes.h.in: Add 16382 (Unknown system error).
	* src/gpg-error.h (gpg_err_code_t): Add system errors.
	(GPG_ERR_CODE_DIM): Change to 32768.
	(GPG_ERR_SYSTEM_ERROR): New macro.
	(gpg_err_code_from_errno): New prototype.
	(gpg_err_code_to_errno): Likewise.

1 files changed, 42 insertions, 0 deletions

diff --git a/src/code-to-errno.c b/src/code-to-errno.c
new file mode 100644
index 0000000..b8253c7
--- /dev/null
+++ b/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 libgpgme-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 ERR.  This returns 0
+   if ERR 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;
+}