FreeBSD/Linux Kernel Cross Reference
sys/xen/interface/io/xenbus.h

     /*****************************************************************************
      * 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,
    
        /*
         * Initializing: Back-end is initializing.
         */
        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,
    
        /*
         * Connected: The normal state for a front to backend connection.
         */
        XenbusStateConnected     = 4,
    
        /*
         * Closing: The device is being closed due to an error or an unplug event.
         */
        XenbusStateClosing       = 5,
    
        /*
         * Closed: No connection exists between front and back end.
         *
         * For backend devices with the "online" attribute, the front can
         * request a reconnect at any time.  To handle this transition
         * gracefully, backend devices must reinitialize any XenStore data
         * used to negotiate features with a peer before transitioning to
         * the closed state.  When a reconnect request occurs, the
         * XenBus backend support code will automatically transition the
         * backend device from Closed to InitWait, kicking off the ring
         * and feature negotiation process.
         */
        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-set-style: "BSD"
     * c-basic-offset: 4
     * tab-width: 4
     * indent-tabs-mode: nil
     * End:
     */

Cache object: 682f383d22c404764c1bcfad39705a4c