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
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
|
/*-
* Copyright (C) 2014 Nathan Whitehorn
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/types.h>
#include <stdarg.h>
#include "bootstrap.h"
#include "host_syscall.h"
static int hostdisk_init(void);
static int hostdisk_strategy(void *devdata, int flag, daddr_t dblk,
size_t size, char *buf, size_t *rsize);
static int hostdisk_open(struct open_file *f, ...);
static int hostdisk_close(struct open_file *f);
static int hostdisk_ioctl(struct open_file *f, u_long cmd, void *data);
static int hostdisk_print(int verbose);
struct devsw hostdisk = {
"/dev",
DEVT_DISK,
hostdisk_init,
hostdisk_strategy,
hostdisk_open,
hostdisk_close,
hostdisk_ioctl,
hostdisk_print,
};
static int
hostdisk_init(void)
{
return (0);
}
static int
hostdisk_strategy(void *devdata, int flag, daddr_t dblk, size_t size,
char *buf, size_t *rsize)
{
struct devdesc *desc = devdata;
daddr_t pos;
int n;
pos = dblk * 512;
if (host_seek(desc->d_unit, pos, 0) < 0) {
printf("Seek error\n");
return (EIO);
}
n = host_read(desc->d_unit, buf, size);
if (n < 0)
return (EIO);
*rsize = n;
return (0);
}
static int
hostdisk_open(struct open_file *f, ...)
{
struct devdesc *desc;
va_list vl;
va_start(vl, f);
desc = va_arg(vl, struct devdesc *);
va_end(vl);
desc->d_unit = host_open(desc->d_opendata, O_RDONLY, 0);
if (desc->d_unit <= 0) {
printf("hostdisk_open: couldn't open %s: %d\n",
desc->d_opendata, desc->d_unit);
return (ENOENT);
}
return (0);
}
static int
hostdisk_close(struct open_file *f)
{
struct devdesc *desc = f->f_devdata;
host_close(desc->d_unit);
return (0);
}
static int
hostdisk_ioctl(struct open_file *f, u_long cmd, void *data)
{
return (EINVAL);
}
static int
hostdisk_print(int verbose)
{
return (0);
}
|
