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
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
|
/**
* @file
*
* @ingroup rtems_bdpart
*
* Block device partition management.
*/
/*
* Copyright (c) 2009, 2010
* embedded brains GmbH
* Obere Lagerstr. 30
* D-82178 Puchheim
* Germany
* <rtems@embedded-brains.de>
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.com/license/LICENSE.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <rtems.h>
#include <rtems/bdpart.h>
rtems_status_code rtems_bdpart_register(
const char *disk_name,
const rtems_bdpart_partition *pt,
size_t count
)
{
rtems_status_code sc = RTEMS_SUCCESSFUL;
rtems_status_code esc = RTEMS_SUCCESSFUL;
rtems_device_major_number major = 0;
rtems_device_minor_number minor = 0;
rtems_blkdev_bnum disk_end = 0;
dev_t disk = 0;
dev_t logical_disk = 0;
char *logical_disk_name = NULL;
char *logical_disk_marker = NULL;
size_t disk_name_size = strlen( disk_name);
size_t i = 0;
int fd = -1;
const rtems_disk_device *dd = NULL;
/* Get disk data */
sc = rtems_bdpart_get_disk_data( disk_name, &fd, &dd, &disk_end);
if (sc != RTEMS_SUCCESSFUL) {
return sc;
}
disk = rtems_disk_get_device_identifier( dd);
close( fd);
/* Get the disk device identifier */
rtems_filesystem_split_dev_t( disk, major, minor);
/* Create logical disk name */
logical_disk_name = malloc( disk_name_size + RTEMS_BDPART_NUMBER_SIZE);
if (logical_disk_name == NULL) {
return RTEMS_NO_MEMORY;
}
strncpy( logical_disk_name, disk_name, disk_name_size);
logical_disk_marker = logical_disk_name + disk_name_size;
/* Create a logical disk for each partition */
for (i = 0; i < count; ++i) {
const rtems_bdpart_partition *p = pt + i;
int rv = 0;
/* New minor number */
++minor;
/* Create a new device identifier */
logical_disk = rtems_filesystem_make_dev_t( major, minor);
/* Set partition number for logical disk name */
rv = snprintf( logical_disk_marker, RTEMS_BDPART_NUMBER_SIZE, "%zu", i + 1);
if (rv >= RTEMS_BDPART_NUMBER_SIZE) {
esc = RTEMS_INVALID_NAME;
goto cleanup;
}
/* Create logical disk */
sc = rtems_disk_create_log(
logical_disk,
disk,
p->begin,
p->end - p->begin,
logical_disk_name
);
if (sc != RTEMS_SUCCESSFUL) {
esc = sc;
goto cleanup;
}
}
cleanup:
free( logical_disk_name);
return esc;
}
rtems_status_code rtems_bdpart_register_from_disk( const char *disk_name)
{
rtems_status_code sc = RTEMS_SUCCESSFUL;
rtems_bdpart_format format;
rtems_bdpart_partition pt [RTEMS_BDPART_PARTITION_NUMBER_HINT];
size_t count = RTEMS_BDPART_PARTITION_NUMBER_HINT;
/* Read partitions */
sc = rtems_bdpart_read( disk_name, &format, pt, &count);
if (sc != RTEMS_SUCCESSFUL) {
return sc;
}
/* Register partitions */
return rtems_bdpart_register( disk_name, pt, count);
}
rtems_status_code rtems_bdpart_unregister(
const char *disk_name,
const rtems_bdpart_partition *pt __attribute__((unused)),
size_t count
)
{
rtems_status_code sc = RTEMS_SUCCESSFUL;
rtems_device_major_number major = 0;
rtems_device_minor_number minor = 0;
rtems_blkdev_bnum disk_end = 0;
dev_t disk = 0;
dev_t logical_disk = 0;
size_t i = 0;
int fd = -1;
const rtems_disk_device *dd = NULL;
/* Get disk data */
sc = rtems_bdpart_get_disk_data( disk_name, &fd, &dd, &disk_end);
if (sc != RTEMS_SUCCESSFUL) {
return sc;
}
disk = rtems_disk_get_device_identifier( dd);
close( fd);
/* Get the disk device identifier */
rtems_filesystem_split_dev_t( disk, major, minor);
/* Create a logical disk for each partition */
for (i = 0; i < count; ++i) {
/* New minor number */
++minor;
/* Get the device identifier */
logical_disk = rtems_filesystem_make_dev_t( major, minor);
/* Delete logical disk */
sc = rtems_disk_delete( logical_disk);
if (sc != RTEMS_SUCCESSFUL) {
return sc;
}
}
return RTEMS_SUCCESSFUL;
}
|
