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/* 
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 * Copyright (c) 2008, XenSource Inc.
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 * All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions are met:
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 *     * Redistributions of source code must retain the above copyright
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 *       notice, this list of conditions and the following disclaimer.
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 *     * Redistributions in binary form must reproduce the above copyright
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 *       notice, this list of conditions and the following disclaimer in the
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 *       documentation and/or other materials provided with the distribution.
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 *     * Neither the name of XenSource Inc. nor the names of its contributors
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 *       may be used to endorse or promote products derived from this software
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 *       without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
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 * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 */
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#ifndef _TAPDISK_INTERFACE_H_
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#define _TAPDISK_INTERFACE_H_
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#include "tapdisk.h"
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#include "tapdisk-queue.h"
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int td_open(td_image_t *);
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int __td_open(td_image_t *, td_disk_info_t *);
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int td_load(td_image_t *);
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int td_close(td_image_t *);
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int td_get_parent_id(td_image_t *, td_disk_id_t *);
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int td_validate_parent(td_image_t *, td_image_t *);
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void td_queue_write(td_image_t *, td_request_t);
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void td_queue_read(td_image_t *, td_request_t);
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void td_forward_request(td_request_t);
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void td_complete_request(td_request_t, int);
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void td_debug(td_image_t *);
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void td_queue_tiocb(td_driver_t *, struct tiocb *);
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void td_prep_read(struct tiocb *, int, char *, size_t,
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                  long long, td_queue_callback_t, void *);
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void td_prep_write(struct tiocb *, int, char *, size_t,
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                   long long, td_queue_callback_t, void *);
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void td_panic(void) __noreturn;
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#endif