1 files changed, 60 insertions, 0 deletions
diff --git a/src/camel/camel-lock.h b/src/camel/camel-lock.h
new file mode 100644
index 000000000..669a38d2a
--- /dev/null
+++ b/src/camel/camel-lock.h
@@ -0,0 +1,60 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
+/*
+ * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
+ *
+ * This library 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.
+ *
+ * This 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 Lesser General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this library. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Authors: Michael Zucchi <notzed@ximian.com>
+ */
+
+#if !defined (__CAMEL_H_INSIDE__) && !defined (CAMEL_COMPILATION)
+#error "Only <camel/camel.h> can be included directly."
+#endif
+
+#ifndef CAMEL_LOCK_H
+#define CAMEL_LOCK_H
+
+#include <glib.h>
+
+/* for .lock locking, retry, delay and stale counts */
+#define CAMEL_LOCK_DOT_RETRY (5) /* number of times to retry lock */
+#define CAMEL_LOCK_DOT_DELAY (2) /* delay between locking retries */
+#define CAMEL_LOCK_DOT_STALE (60) /* seconds before a lock becomes stale */
+
+/* for locking folders, retry/interretry delay */
+#define CAMEL_LOCK_RETRY (5) /* number of times to retry lock */
+#define CAMEL_LOCK_DELAY (2) /* delay between locking retries */
+
+G_BEGIN_DECLS
+
+typedef enum {
+	CAMEL_LOCK_READ,
+	CAMEL_LOCK_WRITE
+} CamelLockType;
+
+/* specific locking strategies */
+gint camel_lock_dot (const gchar *path, GError **error);
+gint camel_lock_fcntl (gint fd, CamelLockType type, GError **error);
+gint camel_lock_flock (gint fd, CamelLockType type, GError **error);
+
+void camel_unlock_dot (const gchar *path);
+void camel_unlock_fcntl (gint fd);
+void camel_unlock_flock (gint fd);
+
+/* lock a folder in a standard way */
+gint camel_lock_folder (const gchar *path, gint fd, CamelLockType type, GError **error);
+void camel_unlock_folder (const gchar *path, gint fd);
+
+G_END_DECLS
+
+#endif /* CAMEL_LOCK_H */