include/xen/interface/io/xenbus.h

   1 /*****************************************************************************
   2  * xenbus.h
   3  *
   4  * Xenbus protocol details.
   5  *
   6  * Copyright (C) 2005 XenSource Ltd.
   7  */
   8
   9 #ifndef _XEN_PUBLIC_IO_XENBUS_H
  10 #define _XEN_PUBLIC_IO_XENBUS_H
  11
  12 /* The state of either end of the Xenbus, i.e. the current communication
  13    status of initialisation across the bus.  States here imply nothing about
  14    the state of the connection between the driver and the kernel's device
  15    layers.  */
  16 enum xenbus_state
  17 {
  18         XenbusStateUnknown      = 0,
  19         XenbusStateInitialising = 1,
  20         XenbusStateInitWait     = 2,  /* Finished early
  21                                          initialisation, but waiting
  22                                          for information from the peer
  23                                          or hotplug scripts. */
  24         XenbusStateInitialised  = 3,  /* Initialised and waiting for a
  25                                          connection from the peer. */
  26         XenbusStateConnected    = 4,
  27         XenbusStateClosing      = 5,  /* The device is being closed
  28                                          due to an error or an unplug
  29                                          event. */
  30         XenbusStateClosed       = 6
  31
  32 };
  33
  34 #endif /* _XEN_PUBLIC_IO_XENBUS_H */
  35
  36 /*
  37  * Local variables:
  38  *  c-file-style: "linux"
  39  *  indent-tabs-mode: t
  40  *  c-indent-level: 8
  41  *  c-basic-offset: 8
  42  *  tab-width: 8
  43  * End:
  44  */