2 * Copyright (c) 2000 Michael Smith
3 * Copyright (c) 2000 BSDi
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * Backwards compatibility support.
33 #if __FreeBSD_version < 500003 /* old buf style */
35 # include <machine/clock.h>
39 # define bioq_init(x) bufq_init(x)
40 # define bioq_insert_tail(x, y) bufq_insert_tail(x, y)
41 # define bioq_remove(x, y) bufq_remove(x, y)
42 # define bioq_first(x) bufq_first(x)
43 # define bio_queue_head buf_queue_head
44 # define bio_bcount b_bcount
45 # define bio_blkno b_blkno
46 # define bio_caller1 b_caller1
47 # define bio_data b_data
48 # define bio_dev b_dev
49 # define bio_driver1 b_driver1
50 # define bio_driver2 b_driver2
51 # define bio_error b_error
52 # define bio_flags b_flags
53 # define bio_pblkno b_pblkno
54 # define bio_resid b_resid
55 # define BIO_ERROR B_ERROR
56 # define devstat_end_transaction_bio(x, y) devstat_end_transaction_buf(x, y)
57 # define BIO_IS_READ(x) ((x)->b_flags & B_READ)
61 # define BIO_IS_READ(x) ((x)->bio_cmd == BIO_READ)