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
|
/* $OpenBSD: nnpfs_dev-bsd.c,v 1.1 2009/06/03 14:45:54 jj Exp $
* Copyright (c) 2004 Bob Beck
* Copyright (c) 1995 - 2003 Kungliga Tekniska Högskolan
* (Royal Institute of Technology, Stockholm, Sweden).
* All rights reserved.
*
* 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. Neither the name of the Institute 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 INSTITUTE 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 INSTITUTE 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 <nnpfs/nnpfs_locl.h>
#include <nnpfs/nnpfs_message.h>
#include <nnpfs/nnpfs_msg_locl.h>
#include <nnpfs/nnpfs_fs.h>
#include <nnpfs/nnpfs_dev.h>
#include <nnpfs/nnpfs_deb.h>
int
nnpfs_devopen(dev_t dev, int flag, int devtype, d_thread_t *proc)
{
NNPFSDEB(XDEBDEV, ("nnpfsopen dev = %d.%d, flag = %d, devtype = %d\n",
major(dev), minor(dev), flag, devtype));
return nnpfs_devopen_common(dev);
}
int
nnpfs_devclose(dev_t dev, int flag, int devtype, d_thread_t *p)
{
NNPFSDEB(XDEBDEV, ("nnpfs_devclose dev = %d(%d), flag = 0x%x\n",
major(dev), minor(dev), flag));
return nnpfs_devclose_common(dev, p);
}
int
nnpfs_devioctl(dev_t dev, u_long cmd, caddr_t data, int flags, d_thread_t *p)
{
NNPFSDEB(XDEBDEV, ("nnpfs_devioctl dev = %d.%d, cmd = %lu, "
"data = %lx, flags = %x\n", major(dev), minor(dev),
(unsigned long)cmd, (unsigned long)data, flags));
return ENOTTY;
}
int
nnpfs_devpoll(dev_t dev, int events, d_thread_t * p)
{
struct nnpfs_channel *chan = &nnpfs_channel[minor(dev)];
NNPFSDEB(XDEBDEV, ("nnpfs_devpoll dev = %d(%d), events = 0x%x\n",
major(dev), minor(dev), events));
if ((events & (POLLIN | POLLRDNORM)) == 0)
return 0; /* only supports read */
if (!nnpfs_emptyq(&chan->messageq))
return (events & (POLLIN | POLLRDNORM));
selrecord (p, &chan->selinfo);
return 0;
}
void
nnpfs_select_wakeup(struct nnpfs_channel *chan)
{
selwakeup (&chan->selinfo);
}
/*
* Install and uninstall device.
*/
struct cdevsw nnpfs_dev = {
nnpfs_devopen,
nnpfs_devclose,
nnpfs_devread,
nnpfs_devwrite,
nnpfs_devioctl,
(dev_type_stop((*))) enodev,
0,
nnpfs_devpoll,
(dev_type_mmap((*))) enodev,
0
};
int
nnpfs_install_device(void)
{
int i;
for (i = 0; i < NNNPFS; i++) {
NNPFSDEB(XDEBDEV, ("before initq(messageq and sleepq)\n"));
nnpfs_initq(&nnpfs_channel[i].messageq);
nnpfs_initq(&nnpfs_channel[i].sleepq);
nnpfs_channel[i].status = 0;
}
return 0;
}
int
nnpfs_uninstall_device(void)
{
int i;
struct nnpfs_channel *chan;
int ret = 0;
for (i = 0; i < NNNPFS; i++) {
chan = &nnpfs_channel[i];
if (chan->status & CHANNEL_OPENED)
nnpfs_devclose(makedev(0, i), 0, 0, NULL);
}
NNPFSDEB(XDEBLKM, ("nnpfs_uninstall_device error %d\n", ret));
return ret;
}
int
nnpfs_stat_device(void)
{
return nnpfs_uprintf_device();
}
int
nnpfs_is_nnpfs_dev(dev_t dev)
{
return major(dev) <= nchrdev &&
cdevsw[major(dev)].d_open == nnpfs_devopen &&
minor(dev) >= 0 && minor(dev) < NNNPFS;
}
|
