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
|
/*
* cdrom_id - determines the capabilities of cdrom drives
*
* Copyright (C) 2005 Greg Kroah-Hartman <gregkh@suse.de>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation version 2 of the License.
*
*/
#ifndef _GNU_SOURCE
#define _GNU_SOURCE 1
#endif
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <ctype.h>
#include <errno.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <linux/types.h>
#include "../../logging.h"
#include "../../udev_utils.h"
/*
* Taken from the cdrom.h kernel include file.
* Included here as some distros don't have an updated version
* with all of the DVD flags. So we just include our own, aren't
* we so nice...
*/
#define CDROM_GET_CAPABILITY 0x5331 /* get capabilities */
/* capability flags used with the uniform CD-ROM driver */
#define CDC_CLOSE_TRAY 0x1 /* caddy systems _can't_ close */
#define CDC_OPEN_TRAY 0x2 /* but _can_ eject. */
#define CDC_LOCK 0x4 /* disable manual eject */
#define CDC_SELECT_SPEED 0x8 /* programmable speed */
#define CDC_SELECT_DISC 0x10 /* select disc from juke-box */
#define CDC_MULTI_SESSION 0x20 /* read sessions>1 */
#define CDC_MCN 0x40 /* Medium Catalog Number */
#define CDC_MEDIA_CHANGED 0x80 /* media changed */
#define CDC_PLAY_AUDIO 0x100 /* audio functions */
#define CDC_RESET 0x200 /* hard reset device */
#define CDC_IOCTLS 0x400 /* driver has non-standard ioctls */
#define CDC_DRIVE_STATUS 0x800 /* driver implements drive status */
#define CDC_GENERIC_PACKET 0x1000 /* driver implements generic packets */
#define CDC_CD_R 0x2000 /* drive is a CD-R */
#define CDC_CD_RW 0x4000 /* drive is a CD-RW */
#define CDC_DVD 0x8000 /* drive is a DVD */
#define CDC_DVD_R 0x10000 /* drive can write DVD-R */
#define CDC_DVD_RAM 0x20000 /* drive can write DVD-RAM */
#define CDC_MO_DRIVE 0x40000 /* drive is an MO device */
#define CDC_MRW 0x80000 /* drive can read MRW */
#define CDC_MRW_W 0x100000 /* drive can write MRW */
#define CDC_RAM 0x200000 /* ok to open for WRITE */
#ifdef USE_LOG
void log_message(int priority, const char *format, ...)
{
va_list args;
static int udev_log = -1;
if (udev_log == -1) {
const char *value;
value = getenv("UDEV_LOG");
if (value)
udev_log = log_priority(value);
else
udev_log = LOG_ERR;
}
if (priority > udev_log)
return;
va_start(args, format);
vsyslog(priority, format, args);
va_end(args);
}
#endif
int main(int argc, char *argv[])
{
const char *node = NULL;
int i;
int export = 0;
int fd;
int rc = 0;
int result;
logging_init("cdrom_id");
for (i = 1 ; i < argc; i++) {
char *arg = argv[i];
if (strcmp(arg, "--export") == 0) {
export = 1;
} else
node = arg;
}
if (!node) {
info("no node specified");
rc = 1;
goto exit;
}
fd = open(node, O_RDONLY|O_NONBLOCK);
if (fd < 0) {
info("unable to open '%s'", node);
rc = 1;
goto exit;
}
result = ioctl(fd, CDROM_GET_CAPABILITY, NULL);
if (result < 0) {
info("CDROM_GET_CAPABILITY failed for '%s'", node);
rc = 3;
goto close;
}
printf("ID_CDROM=1\n");
if (result & CDC_CD_R)
printf("ID_CDROM_CD_R=1\n");
if (result & CDC_CD_RW)
printf("ID_CDROM_CD_RW=1\n");
if (result & CDC_DVD)
printf("ID_CDROM_DVD=1\n");
if (result & CDC_DVD_R)
printf("ID_CDROM_DVD_R=1\n");
if (result & CDC_DVD_RAM)
printf("ID_CDROM_DVD_RAM=1\n");
if (result & CDC_MRW)
printf("ID_CDROM_MRW=1\n");
if (result & CDC_MRW_W)
printf("ID_CDROM_MRW_W=1\n");
if (result & CDC_RAM)
printf("ID_CDROM_RAM=1\n");
close:
close(fd);
exit:
logging_close();
return rc;
}
|
