LXR linux/drivers/xen/xenbus/xenbus

   1/*
   2 * Private include for xenbus communications.
   3 *
   4 * Copyright (C) 2005 Rusty Russell, IBM Corporation
   5 *
   6 * This program is free software; you can redistribute it and/or
   7 * modify it under the terms of the GNU General Public License version 2
   8 * as published by the Free Software Foundation; or, when distributed
   9 * separately from the Linux kernel or incorporated into other
  10 * software packages, subject to the following license:
  11 *
  12 * Permission is hereby granted, free of charge, to any person obtaining a copy
  13 * of this source file (the "Software"), to deal in the Software without
  14 * restriction, including without limitation the rights to use, copy, modify,
  15 * merge, publish, distribute, sublicense, and/or sell copies of the Software,
  16 * and to permit persons to whom the Software is furnished to do so, subject to
  17 * the following conditions:
  18 *
  19 * The above copyright notice and this permission notice shall be included in
  20 * all copies or substantial portions of the Software.
  21 *
  22 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  23 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  24 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  25 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  26 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  27 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  28 * IN THE SOFTWARE.
  29 */
  30
  31#ifndef _XENBUS_COMMS_H
  32#define _XENBUS_COMMS_H
  33
  34#include <linux/fs.h>
  35
  36int xs_init(void);
  37int xb_init_comms(void);
  38void xb_deinit_comms(void);
  39
  40/* Low level routines. */
  41int xb_write(const void *data, unsigned len);
  42int xb_read(void *data, unsigned len);
  43int xb_data_to_read(void);
  44int xb_wait_for_data_to_read(void);
  45int xs_input_avail(void);
  46extern struct xenstore_domain_interface *xen_store_interface;
  47extern int xen_store_evtchn;
  48extern enum xenstore_init xen_store_domain_type;
  49
  50extern const struct file_operations xen_xenbus_fops;
  51
  52#endif /* _XENBUS_COMMS_H */
  53