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
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
|
/*
* Copyright (c) 2005-2010 Douglas Gilbert.
* All rights reserved.
* Use of this source code is governed by a BSD-style
* license that can be found in the BSD_LICENSE file.
*/
#include <unistd.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <getopt.h>
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "sg_lib.h"
#include "sg_cmds_basic.h"
#include "sg_cmds_extra.h"
/* A utility program was originally written for the Linux OS SCSI subsystem.
*
*
* This program issues the SCSI command READ MEDIA SERIAL NUMBER
* to the given SCSI device.
*/
static char * version_str = "1.08 20100312";
#define SERIAL_NUM_SANITY_LEN (16 * 1024)
static struct option long_options[] = {
{"help", 0, 0, 'h'},
{"raw", 0, 0, 'r'},
{"verbose", 0, 0, 'v'},
{"version", 0, 0, 'V'},
{0, 0, 0, 0},
};
static void usage()
{
fprintf(stderr, "Usage: "
"sg_rmsn [--help] [--raw] [--verbose] [--version] DEVICE\n"
" where:\n"
" --help|-h print out usage message\n"
" --raw|-r output serial number to stdout "
"(potentially binary)\n"
" --verbose|-v increase verbosity\n"
" --version|-V print version string and exit\n\n"
"Performs a SCSI READ MEDIA SERIAL NUMBER command\n"
);
}
int main(int argc, char * argv[])
{
int sg_fd, res, c, sn_len, n;
unsigned char rmsn_buff[4];
unsigned char * ucp = NULL;
int raw = 0;
int verbose = 0;
const char * device_name = NULL;
int ret = 0;
while (1) {
int option_index = 0;
c = getopt_long(argc, argv, "hrvV", long_options,
&option_index);
if (c == -1)
break;
switch (c) {
case 'h':
case '?':
usage();
return 0;
case 'r':
raw = 1;
break;
case 'v':
++verbose;
break;
case 'V':
fprintf(stderr, "version: %s\n", version_str);
return 0;
default:
fprintf(stderr, "unrecognised option code 0x%x ??\n", c);
usage();
return SG_LIB_SYNTAX_ERROR;
}
}
if (optind < argc) {
if (NULL == device_name) {
device_name = argv[optind];
++optind;
}
if (optind < argc) {
for (; optind < argc; ++optind)
fprintf(stderr, "Unexpected extra argument: %s\n",
argv[optind]);
usage();
return SG_LIB_SYNTAX_ERROR;
}
}
if (NULL == device_name) {
fprintf(stderr, "missing device name!\n");
usage();
return SG_LIB_SYNTAX_ERROR;
}
if (raw) {
if (sg_set_binary_mode(STDOUT_FILENO) < 0) {
perror("sg_set_binary_mode");
return SG_LIB_FILE_ERROR;
}
}
sg_fd = sg_cmds_open_device(device_name, 0 /* rw */, verbose);
if (sg_fd < 0) {
fprintf(stderr, "open error: %s: %s\n", device_name,
safe_strerror(-sg_fd));
return SG_LIB_FILE_ERROR;
}
memset(rmsn_buff, 0x0, sizeof(rmsn_buff));
res = sg_ll_read_media_serial_num(sg_fd, rmsn_buff, sizeof(rmsn_buff),
1, verbose);
ret = res;
if (0 == res) {
sn_len = (rmsn_buff[0] << 24) + (rmsn_buff[1] << 16) +
(rmsn_buff[2] << 8) + rmsn_buff[3];
if (! raw)
printf("Reported serial number length = %d\n", sn_len);
if (0 == sn_len) {
fprintf(stderr, " This implies the media has no serial "
"number\n");
goto err_out;
}
if (sn_len > SERIAL_NUM_SANITY_LEN) {
fprintf(stderr, " That length (%d) seems too long for a "
"serial number\n", sn_len);
goto err_out;
}
sn_len += 4;
ucp = (unsigned char *)malloc(sn_len);
if (NULL == ucp) {
fprintf(stderr, " Out of memory (ram)\n");
goto err_out;
}
res = sg_ll_read_media_serial_num(sg_fd, ucp, sn_len, 1, verbose);
if (0 == res) {
sn_len = (ucp[0] << 24) + (ucp[1] << 16) + (ucp[2] << 8) +
ucp[3];
if (raw) {
if (sn_len > 0)
n = fwrite(ucp + 4, 1, sn_len, stdout);
} else {
printf("Serial number:\n");
if (sn_len > 0)
dStrHex((const char *)ucp + 4, sn_len, 0);
}
}
}
if (0 != res) {
if (SG_LIB_CAT_INVALID_OP == res)
fprintf(stderr, "Read Media Serial Number command not "
"supported\n");
else if (SG_LIB_CAT_NOT_READY == res)
fprintf(stderr, "Read Media Serial Number failed, device not "
"ready\n");
else if (SG_LIB_CAT_UNIT_ATTENTION == res)
fprintf(stderr, "Read Media Serial Number failed, unit "
"attention\n");
else if (SG_LIB_CAT_ABORTED_COMMAND == res)
fprintf(stderr, "Read Media Serial Number failed, aborted "
"command\n");
else if (SG_LIB_CAT_ILLEGAL_REQ == res)
fprintf(stderr, "bad field in Read Media Serial Number cdb "
"including unsupported service action\n");
else {
fprintf(stderr, "Read Media Serial Number failed\n");
if (0 == verbose)
fprintf(stderr, " try '-v' for more information\n");
}
}
err_out:
if (ucp)
free(ucp);
res = sg_cmds_close_device(sg_fd);
if (res < 0) {
fprintf(stderr, "close error: %s\n", safe_strerror(-res));
if (0 == ret)
return SG_LIB_FILE_ERROR;
}
return (ret >= 0) ? ret : SG_LIB_CAT_OTHER;
}
|
