1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
|
/* $OpenBSD: media.h,v 1.11 2016/01/16 21:59:30 krw Exp $ */
/*
* media.h -
*
* Written by Eryk Vershen
*/
/*
* Copyright 1997,1998 by Apple Computer, Inc.
* All Rights Reserved
*
* Permission to use, copy, modify, and distribute this software and
* its documentation for any purpose and without fee is hereby granted,
* provided that the above copyright notice appears in all copies and
* that both the copyright notice and this permission notice appear in
* supporting documentation.
*
* APPLE COMPUTER DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE.
*
* IN NO EVENT SHALL APPLE COMPUTER BE LIABLE FOR ANY SPECIAL, INDIRECT, OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
* LOSS OF USE, DATA OR PROFITS, WHETHER IN ACTION OF CONTRACT,
* NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef __media__
#define __media__
/*
* Media is an abstraction of a disk device.
*
* A media object has the following visible attributes:
*
* a granularity (e.g. 512, 1024, 1, etc.)
* a total size in bytes
*
* And the following operations are available:
*
* open
* read @ byte offset for size in bytes
* write @ byte offset for size in bytes
* close
*
* XXX Should really split public media interface from "protected" interface.
*/
/*
* Defines
*/
/*
* Types
*/
/* those whose use media objects need just the pointer type */
typedef struct media *MEDIA;
struct media {
long long size_in_bytes; /* offset granularity */
};
/*
* Global Constants
*/
/*
* Global Variables
*/
/*
* Forward declarations
*/
#endif /* __media__ */
|
