lib/util: Add tevent WERROR wrappers

Signed-off-by: Stefan Metzmacher <metze@samba.org>

Autobuild-User: Stefan Metzmacher <metze@samba.org>
Autobuild-Date: Sat Oct 23 07:35:28 UTC 2010 on sn-devel-104

3 files changed, 126 insertions, 2 deletions

diff --git a/lib/util/tevent_werror.c b/lib/util/tevent_werror.c
new file mode 100644
index 00000000000..d8956b398f1
--- /dev/null
+++ b/lib/util/tevent_werror.c
@@ -0,0 +1,81 @@
+/*
+   Unix SMB/CIFS implementation.
+   Wrap win32 errors around tevent_req
+   Copyright (C) Kai Blin 2010
+
+   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 "../replace/replace.h"
+#include "tevent_werror.h"
+
+bool _tevent_req_werror(struct tevent_req *req,
+			WERROR werror,
+			const char *location)
+{
+	return _tevent_req_error(req, W_ERROR_V(werror),
+				 location);
+}
+
+bool tevent_req_is_werror(struct tevent_req *req, WERROR *error)
+{
+	enum tevent_req_state state;
+	uint64_t err;
+
+	if (!tevent_req_is_error(req, &state, &err)) {
+		return false;
+	}
+	switch (state) {
+	case TEVENT_REQ_TIMED_OUT:
+		*error = WERR_TIMEOUT;
+		break;
+	case TEVENT_REQ_NO_MEMORY:
+		*error = WERR_NOMEM;
+		break;
+	case TEVENT_REQ_USER_ERROR:
+		*error = W_ERROR(err);
+		break;
+	default:
+		*error = WERR_INTERNAL_ERROR;
+		break;
+	}
+	return true;
+}
+
+WERROR tevent_req_simple_recv_werror(struct tevent_req *req)
+{
+	WERROR werror;
+
+	if (tevent_req_is_werror(req, &werror)) {
+		tevent_req_received(req);
+		return werror;
+	}
+	tevent_req_received(req);
+	return WERR_OK;
+}
+
+void tevent_req_simple_finish_werror(struct tevent_req *subreq,
+				     WERROR subreq_error)
+{
+	struct tevent_req *req = tevent_req_callback_data(
+		subreq, struct tevent_req);
+
+	TALLOC_FREE(subreq);
+
+	if (!W_ERROR_IS_OK(subreq_error)) {
+		tevent_req_werror(req, subreq_error);
+		return;
+	}
+	tevent_req_done(req);
+}
diff --git a/lib/util/tevent_werror.h b/lib/util/tevent_werror.h
new file mode 100644
index 00000000000..0e243825b6c
--- /dev/null
+++ b/lib/util/tevent_werror.h
@@ -0,0 +1,43 @@
+/*
+   Unix SMB/CIFS implementation.
+   Wrap win32 errors around tevent_req
+   Copyright (C) Kai Blin 2010
+
+   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/>.
+*/
+
+#ifndef _TEVENT_WERROR_H
+#define _TEVENT_WERROR_H
+
+#include <stdint.h>
+#include <stdbool.h>
+#include "../libcli/util/werror.h"
+#include <tevent.h>
+
+bool _tevent_req_werror(struct tevent_req *req,
+			WERROR werror,
+			const char *location);
+#define tevent_req_werror(req, werror) \
+	_tevent_req_werror(req, werror, __location__)
+bool tevent_req_is_werror(struct tevent_req *req, WERROR *error);
+WERROR tevent_req_simple_recv_werror(struct tevent_req *req);
+
+/*
+ * Helper routine to pass the subreq_werror to the req embedded in
+ * tevent_req_callback_data(subreq), which will be freed.
+ */
+void tevent_req_simple_finish_werror(struct tevent_req *subreq,
+				     WERROR subreq_error);
+
+#endif
diff --git a/lib/util/wscript_build b/lib/util/wscript_build
index 9162bcbba00..e1030c88e9c 100644
--- a/lib/util/wscript_build
+++ b/lib/util/wscript_build
@@ -41,10 +41,10 @@ bld.SAMBA_SUBSYSTEM('UTIL_TDB',
 	)
 
 bld.SAMBA_SUBSYSTEM('UTIL_TEVENT',
-	source='tevent_unix.c tevent_ntstatus.c',
+	source='tevent_unix.c tevent_ntstatus.c tevent_werror.c',
 	local_include=False,
 	public_deps='tevent',
-	public_headers='tevent_ntstatus.h tevent_unix.h',
+	public_headers='tevent_ntstatus.h tevent_unix.h tevent_werror.h',
 	header_path=[ ('*', 'util') ],
 	)