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
|
/* nbdkit
* Copyright Red Hat
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * 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.
*
* * Neither the name of Red Hat nor the names of its contributors may be
* used to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''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 RED HAT OR
* CONTRIBUTORS 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 <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <inttypes.h>
#include <string.h>
#include <unistd.h>
#include <guestfs.h>
#include "iszero.h"
#include "test.h"
int
main (int argc, char *argv[])
{
guestfs_h *g;
int r;
char *data;
size_t size;
if (test_start_nbdkit ("data",
/* This example from the nbdkit-data-plugin(1)
* man page creates a 1 MB disk with one
* empty MBR-formatted partition.
*/
"@0x1b8 0xf8 0x21 0xdc 0xeb 0*4 "
"2 0 0x83 0x20*2 0 1 0 0 0 0xff 0x7 "
"@0x1fe 0x55 0xaa",
"size=1M",
NULL) == -1)
exit (EXIT_FAILURE);
g = guestfs_create ();
if (g == NULL) {
perror ("guestfs_create");
exit (EXIT_FAILURE);
}
r = guestfs_add_drive_opts (g, "",
GUESTFS_ADD_DRIVE_OPTS_FORMAT, "raw",
GUESTFS_ADD_DRIVE_OPTS_PROTOCOL, "nbd",
GUESTFS_ADD_DRIVE_OPTS_SERVER, server,
-1);
if (r == -1)
exit (EXIT_FAILURE);
if (guestfs_launch (g) == -1)
exit (EXIT_FAILURE);
/* Read the actual data in the first sector, to check that it
* matches what we described in the data= parameter above.
*/
data = guestfs_pread_device (g, "/dev/sda", 512, 0, &size);
if (data == NULL)
exit (EXIT_FAILURE);
if (size != 512) {
fprintf (stderr, "%s: unexpected short read\n", program_name);
exit (EXIT_FAILURE);
}
if (memcmp (&data[0x1b8],
"\xf8\x21\xdc\xeb\0\0\0\0"
"\2\0\x83\x20\x20\0\1\0\0\0\xff\x7", 20) != 0 ||
memcmp (&data[0x1fe], "\x55\xaa", 2) != 0) {
fprintf (stderr, "%s: unexpected data in boot sector\n", program_name);
exit (EXIT_FAILURE);
}
memset (&data[0x1b8], 0, 20);
memset (&data[0x1fe], 0, 2);
if (!is_zero (data, 512)) {
fprintf (stderr, "%s: unexpected data in zero parts of boot sector\n",
program_name);
exit (EXIT_FAILURE);
}
free (data);
/* Since the disk image has a partition, we should be able to format it. */
if (guestfs_mkfs (g, "vfat", "/dev/sda1") == -1)
exit (EXIT_FAILURE);
/* Mount it and write a file. */
if (guestfs_mount (g, "/dev/sda1", "/") == -1)
exit (EXIT_FAILURE);
if (guestfs_write (g, "/foo", "hello", 5) == -1)
exit (EXIT_FAILURE);
if (guestfs_shutdown (g) == -1)
exit (EXIT_FAILURE);
guestfs_close (g);
exit (EXIT_SUCCESS);
}
|
