Implement a no_locking module that *does* attempt activation.

1 files changed, 60 insertions, 0 deletions

diff --git a/lib/locking/no_locking.c b/lib/locking/no_locking.c
new file mode 100644
index 00000000..b4af7966
--- /dev/null
+++ b/lib/locking/no_locking.c
@@ -0,0 +1,60 @@
+/*
+ * Copyright (C) 2001 Sistina Software (UK) Limited.
+ *
+ * This file is released under the LGPL.
+ *
+ */
+
+#include "log.h"
+#include "locking.h"
+#include "locking_types.h"
+#include "lvm-string.h"
+#include "activate.h"
+
+#include <signal.h>
+
+/*
+ * No locking
+ */
+
+static void _no_fin_locking(void)
+{
+	return;
+}
+
+static int _no_lock_resource(struct cmd_context *cmd, const char *resource,
+			     int flags)
+{
+	switch (flags & LCK_SCOPE_MASK) {
+	case LCK_VG:
+		break;
+	case LCK_LV:
+		switch (flags & LCK_TYPE_MASK) {
+		case LCK_UNLOCK:
+			return lv_resume_if_active(cmd, resource);
+		case LCK_READ:
+			return lv_activate(cmd, resource);
+		case LCK_WRITE:
+			return lv_suspend_if_active(cmd, resource);
+		case LCK_EXCL:
+			return lv_deactivate(cmd, resource);
+		default:
+			break;
+		}
+		break;
+	default:
+		log_error("Unrecognised lock scope: %d",
+			  flags & LCK_SCOPE_MASK);
+		return 0;
+	}
+
+	return 1;
+}
+
+int init_no_locking(struct locking_type *locking, struct config_file *cf)
+{
+	locking->lock_resource = _no_lock_resource;
+	locking->fin_locking = _no_fin_locking;
+
+	return 1;
+}