    /*****************************************************************************
     * xenbus.h
     *
     * Xenbus protocol details.
     *
     * Permission is hereby granted, free of charge, to any person obtaining a copy
     * of this software and associated documentation files (the "Software"), to
     * deal in the Software without restriction, including without limitation the
     * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
     * sell copies of the Software, and to permit persons to whom the Software is
     * furnished to do so, subject to the following conditions:
     *
     * The above copyright notice and this permission notice shall be included in
     * all copies or substantial portions of the Software.
     *
     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
     * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
     * DEALINGS IN THE SOFTWARE.
     *
     * Copyright (C) 2005 XenSource Ltd.
     */

    #ifndef _XEN_PUBLIC_IO_XENBUS_H
    #define _XEN_PUBLIC_IO_XENBUS_H

    /*
     * The state of either end of the Xenbus, i.e. the current communication
     * status of initialisation across the bus.  States here imply nothing about
     * the state of the connection between the driver and the kernel's device
     * layers.
     */
    enum xenbus_state {
        XenbusStateUnknown       = 0,

        XenbusStateInitialising  = 1,

        /*
         * InitWait: Finished early initialisation but waiting for information
         * from the peer or hotplug scripts.
         */
        XenbusStateInitWait      = 2,

        /*
         * Initialised: Waiting for a connection from the peer.
         */
        XenbusStateInitialised   = 3,

        XenbusStateConnected     = 4,

        /*
         * Closing: The device is being closed due to an error or an unplug event.
         */
        XenbusStateClosing       = 5,

        XenbusStateClosed        = 6,

        /*
         * Reconfiguring: The device is being reconfigured.
         */
        XenbusStateReconfiguring = 7,

        XenbusStateReconfigured  = 8
    };
    typedef enum xenbus_state XenbusState;

    #endif /* _XEN_PUBLIC_IO_XENBUS_H */

    /*
     * Local variables:
     * mode: C
     * c-file-style: "BSD"
     * c-basic-offset: 4
     * tab-width: 4
     * indent-tabs-mode: nil
     * End:
     */