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
|
/* "superscsi" pseudo device.
* "superscsi" supports general SCSI utilities that can iterate
* over all SCSI targets, including those without device entry
* points.
*
* "superscsi" supports the SCIOCADDR ioctl to change the BUS, ID, LUN
* of the target so that you can get to all devices. The only thing
* you can do to "superscsi" is open it, set the target, perform ioctl
* calls, and close it.
*
* Keep "superscsi" protected: you can drive a truck through the
* security hole if you don't.
*
*Begin copyright
*
* Copyright (C) 1993, 1994, 1995, HD Associates, Inc.
* PO Box 276
* Pepperell, MA 01463
* 508 433 5266
* dufault@hda.com
*
* This code is contributed to the University of California at Berkeley:
*
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University 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 THE REGENTS 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 THE REGENTS 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.
*End copyright
* $Id$
*/
#include <sys/types.h>
#include <sys/param.h>
#include <sys/conf.h>
#include <sys/scsiio.h>
#include <sys/kernel.h>
#include <sys/errno.h>
#include <sys/stat.h>
#include <sys/buf.h>
#include <sys/systm.h>
#ifdef DEVFS
#include <sys/devfsext.h>
#endif /*DEVFS*/
#include <scsi/scsiconf.h>
static d_open_t sscopen;
static d_close_t sscclose;
static d_ioctl_t sscioctl;
extern d_open_t suopen;
extern d_close_t suclose;
extern d_ioctl_t suioctl;
#define CDEV_MAJOR 49
static struct cdevsw ssc_cdevsw =
{ sscopen, sscclose, noread, nowrite, /*49*/
sscioctl, nostop, nullreset, nodevtotty,
noselect, nommap, nostrategy, "ssc", NULL, -1 };
static dev_t sscdev = NODEV;
static int
sscopen(dev_t dev, int flag, int type, struct proc *p)
{
if (sscdev != NODEV)
return suopen(sscdev, flag, type, p);
return 0;
}
static int
sscclose(dev_t dev, int fflag, int type, struct proc *p)
{
if (sscdev != NODEV)
return suclose(sscdev, fflag, type, p);
return 0;
}
static int
sscioctl(dev_t dev, int cmd, caddr_t data, int fflag, struct proc *p)
{
if (cmd == SCIOCADDR)
{
struct scsi_addr *sca = (struct scsi_addr *) data;
dev_t newdev = SCSI_MKFIXED(sca->scbus,sca->target,sca->lun);
int ret;
if (sscdev != NODEV)
{
suclose(sscdev, fflag, S_IFCHR, p);
sscdev = NODEV;
}
if ( (ret = suopen(newdev, fflag, S_IFCHR, p)) )
return ret;
sscdev = newdev;
return 0;
}
if (sscdev != NODEV)
return suioctl(sscdev, cmd, data, fflag, p);
return ENXIO;
}
/*
* I've elected not to support any other entries. There really is no
* good reason other than I'm not sure how you would use them.
*/
static ssc_devsw_installed = 0;
#ifdef DEVFS
static void *ssc_devfs_token;
#endif
static void
ssc_drvinit(void *unused)
{
dev_t dev;
if( ! ssc_devsw_installed ) {
dev = makedev(CDEV_MAJOR, 0);
cdevsw_add(&dev,&ssc_cdevsw, NULL);
ssc_devsw_installed = 1;
#ifdef DEVFS
ssc_devfs_token =
devfs_add_devswf(&ssc_cdevsw, 0, DV_CHR, 0, 0,
0600, "ssc");
#endif
}
}
SYSINIT(sscdev,SI_SUB_DRIVERS,SI_ORDER_MIDDLE+CDEV_MAJOR,ssc_drvinit,NULL)
|
