source: mainline/uspace/srv/bd/hr/io.h

Last change on this file was c1c1c41, checked in by Miroslav Cimerman <mc@…>, 8 days ago

hr: add author's email address to RAID 5 files

  • Property mode set to 100644
File size: 2.7 KB
Line 
1/*
2 * Copyright (c) 2025 Miroslav Cimerman <mc@doas.su>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * - Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * - 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.
14 * - The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29/** @addtogroup hr
30 * @{
31 */
32/**
33 * @file
34 */
35
36#ifndef _HR_IO_H
37#define _HR_IO_H
38
39#include "parity_stripe.h"
40#include "var.h"
41#include "util.h"
42
43typedef struct hr_io {
44 hr_bd_op_type_t type; /* read/write */
45 uint64_t ba;
46 uint64_t cnt;
47 void *data_read;
48 const void *data_write;
49 size_t extent; /* extent index */
50 hr_volume_t *vol; /* volume back-pointer */
51} hr_io_t;
52
53typedef struct hr_io_raid5 {
54 uint64_t ba;
55 uint64_t cnt;
56 void *data_read;
57 const void *data_write;
58 size_t extent;
59 uint64_t strip_off; /* needed for offseting parity commits */
60 hr_stripe_t *stripe;
61 hr_volume_t *vol;
62} hr_io_raid5_t;
63
64extern errno_t hr_write_direct(service_id_t, uint64_t, size_t, const void *);
65extern errno_t hr_read_direct(service_id_t, uint64_t, size_t, void *);
66extern errno_t hr_sync_cache(service_id_t, uint64_t, size_t);
67
68extern errno_t hr_io_worker(void *);
69
70extern errno_t hr_io_raid5_basic_reader(void *);
71extern errno_t hr_io_raid5_reader(void *);
72extern errno_t hr_io_raid5_basic_writer(void *);
73extern errno_t hr_io_raid5_writer(void *);
74extern errno_t hr_io_raid5_noop_writer(void *);
75extern errno_t hr_io_raid5_parity_getter(void *);
76extern errno_t hr_io_raid5_subtract_writer(void *);
77extern errno_t hr_io_raid5_reconstruct_reader(void *);
78extern errno_t hr_io_raid5_parity_writer(void *);
79
80#endif
81
82/** @}
83 */
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