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 36 int xs_init(void); 37 int xb_init_comms(void); 38 39 /* Low level routines. */ 40 int xb_write(const void *data, unsigned len); 41 int xb_read(void *data, unsigned len); 42 int xb_data_to_read(void); 43 int xb_wait_for_data_to_read(void); 44 int xs_input_avail(void); 45 extern struct xenstore_domain_interface *xen_store_interface; 46 extern int xen_store_evtchn; 47 48 extern const struct file_operations xen_xenbus_fops; 49 50 #endif /* _XENBUS_COMMS_H */ 51