root / drivers / tapdisk-driver.h @ abdb293f
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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_DRIVER_H_
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#define _TAPDISK_DRIVER_H_
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#include "tapdisk.h" |
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#include "scheduler.h" |
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#include "tapdisk-queue.h" |
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#include "tapdisk-loglimit.h" |
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#define TD_DRIVER_OPEN 0x0001 |
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#define TD_DRIVER_RDONLY 0x0002 |
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struct td_driver_handle {
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int type;
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char *name;
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int storage;
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int refcnt;
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td_flag_t state; |
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td_disk_info_t info; |
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void *data;
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const struct tap_disk *ops; |
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td_loglimit_t loglimit; |
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struct list_head next;
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}; |
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td_driver_t *tapdisk_driver_allocate(int, const char *, td_flag_t); |
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void tapdisk_driver_free(td_driver_t *);
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void tapdisk_driver_queue_tiocb(td_driver_t *, struct tiocb *); |
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void tapdisk_driver_debug(td_driver_t *);
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void tapdisk_driver_stats(td_driver_t *, td_stats_t *);
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int tapdisk_driver_log_pass(td_driver_t *, const char *caller); |
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#endif
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