- Update Xen patches to 3.3-rc5 and c/s 1157.

[linux-flexiantxendom0-3.2.10.git] / drivers / xen / xenbus / xenbus_comms.h

diff --git a/drivers/xen/xenbus/xenbus_comms.h b/drivers/xen/xenbus/xenbus_comms.h
index 6e42800..10f775e 100644 (file)
--- a/drivers/xen/xenbus/xenbus_comms.h
+++ b/drivers/xen/xenbus/xenbus_comms.h
@@ -47,4 +47,27 @@ extern int xen_store_evtchn;
 
 extern const struct file_operations xen_xenbus_fops;
 
+/* For xenbus internal use. */
+enum {
+       XENBUS_XSD_UNCOMMITTED = 0,
+       XENBUS_XSD_FOREIGN_INIT,
+       XENBUS_XSD_FOREIGN_READY,
+       XENBUS_XSD_LOCAL_INIT,
+       XENBUS_XSD_LOCAL_READY,
+};
+extern atomic_t xenbus_xsd_state;
+
+static inline int is_xenstored_ready(void)
+{
+       int s = atomic_read(&xenbus_xsd_state);
+       return s == XENBUS_XSD_FOREIGN_READY || s == XENBUS_XSD_LOCAL_READY;
+}
+
+#if defined(CONFIG_XEN_XENBUS_DEV) && defined(CONFIG_XEN_PRIVILEGED_GUEST)
+#include <xen/interface/event_channel.h>
+#include <xen/interface/grant_table.h>
+
+int xenbus_conn(domid_t, grant_ref_t *, evtchn_port_t *);
+#endif
+
 #endif /* _XENBUS_COMMS_H */