The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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

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    1 /*****************************************************************************
    2  * xenbus.h
    3  *
    4  * Xenbus protocol details.
    5  *
    6  * Permission is hereby granted, free of charge, to any person obtaining a copy
    7  * of this software and associated documentation files (the "Software"), to
    8  * deal in the Software without restriction, including without limitation the
    9  * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
   10  * sell copies of the Software, and to permit persons to whom the Software is
   11  * furnished to do so, subject to the following conditions:
   12  *
   13  * The above copyright notice and this permission notice shall be included in
   14  * all copies or substantial portions of the Software.
   15  *
   16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
   19  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
   21  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
   22  * DEALINGS IN THE SOFTWARE.
   23  *
   24  * Copyright (C) 2005 XenSource Ltd.
   25  */
   26 
   27 #ifndef _XEN_PUBLIC_IO_XENBUS_H
   28 #define _XEN_PUBLIC_IO_XENBUS_H
   29 
   30 /*
   31  * The state of either end of the Xenbus, i.e. the current communication
   32  * status of initialisation across the bus.  States here imply nothing about
   33  * the state of the connection between the driver and the kernel's device
   34  * layers.
   35  */
   36 enum xenbus_state {
   37     XenbusStateUnknown       = 0,
   38 
   39     XenbusStateInitialising  = 1,
   40 
   41     /*
   42      * InitWait: Finished early initialisation but waiting for information
   43      * from the peer or hotplug scripts.
   44      */
   45     XenbusStateInitWait      = 2,
   46 
   47     /*
   48      * Initialised: Waiting for a connection from the peer.
   49      */
   50     XenbusStateInitialised   = 3,
   51 
   52     XenbusStateConnected     = 4,
   53 
   54     /*
   55      * Closing: The device is being closed due to an error or an unplug event.
   56      */
   57     XenbusStateClosing       = 5,
   58 
   59     XenbusStateClosed        = 6,
   60 
   61     /*
   62      * Reconfiguring: The device is being reconfigured.
   63      */
   64     XenbusStateReconfiguring = 7,
   65 
   66     XenbusStateReconfigured  = 8
   67 };
   68 typedef enum xenbus_state XenbusState;
   69 
   70 #endif /* _XEN_PUBLIC_IO_XENBUS_H */
   71 
   72 /*
   73  * Local variables:
   74  * mode: C
   75  * c-file-style: "BSD"
   76  * c-basic-offset: 4
   77  * tab-width: 4
   78  * indent-tabs-mode: nil
   79  * End:
   80  */

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