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
|
/* $Id: socksys.c,v 1.1 1997/09/03 12:29:27 jj Exp $
* socksys.c: /dev/inet/ stuff for Solaris emulation.
*
* Copyright (C) 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
* Copyright (C) 1995, 1996 Mike Jagdis (jaggy@purplet.demon.co.uk)
*/
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/smp.h>
#include <linux/smp_lock.h>
#include <linux/ioctl.h>
#include <linux/fs.h>
#include <linux/init.h>
#include <linux/poll.h>
#include <asm/uaccess.h>
#include <asm/termios.h>
#include "conv.h"
extern asmlinkage int sys_ioctl(unsigned int fd, unsigned int cmd,
unsigned long arg);
static int af_inet_protocols[] = {
IPPROTO_ICMP, IPPROTO_ICMP, IPPROTO_IGMP, IPPROTO_IPIP, IPPROTO_TCP,
IPPROTO_EGP, IPPROTO_PUP, IPPROTO_UDP, IPPROTO_IDP, IPPROTO_RAW,
0, 0, 0, 0, 0, 0,
};
static struct file_operations socksys_file_ops = {
NULL, /* lseek */
NULL, /* read */
NULL, /* write */
NULL, /* readdir */
NULL, /* poll */
NULL, /* ioctl */
NULL, /* mmap */
NULL, /* open */
NULL, /* release */
};
static int socksys_open(struct inode * inode, struct file * filp)
{
int family, type, protocol, fd;
int (*sys_socket)(int,int,int) =
(int (*)(int,int,int))SUNOS(97);
family = ((MINOR(inode->i_rdev) >> 4) & 0xf);
switch (family) {
case AF_UNIX:
type = SOCK_STREAM;
protocol = 0;
break;
case AF_INET:
protocol = af_inet_protocols[MINOR(inode->i_rdev) & 0xf];
switch (protocol) {
case IPPROTO_TCP: type = SOCK_STREAM; break;
case IPPROTO_UDP: type = SOCK_DGRAM; break;
default: type = SOCK_RAW; break;
}
break;
default:
type = SOCK_RAW;
protocol = 0;
break;
}
fd = sys_socket(family, type, protocol);
if (fd < 0) return fd;
return 0;
}
static int socksys_release(struct inode * inode, struct file * filp)
{
return 0;
}
static unsigned int socksys_poll(struct file * filp, poll_table * wait)
{
return 0;
}
static struct file_operations socksys_fops = {
NULL, /* lseek */
NULL, /* read */
NULL, /* write */
NULL, /* readdir */
NULL, /* poll */
NULL, /* ioctl */
NULL, /* mmap */
socksys_open, /* open */
socksys_release,/* release */
};
__initfunc(int
init_socksys(void))
{
int ret;
int (*sys_socket)(int,int,int) =
(int (*)(int,int,int))SUNOS(97);
int (*sys_close)(unsigned int) =
(int (*)(unsigned int))SYS(close);
ret = register_chrdev (30, "socksys", &socksys_fops);
if (ret < 0) {
printk ("Couldn't register socksys character device\n");
return ret;
}
ret = sys_socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
if (ret < 0) {
printk ("Couldn't create socket\n");
return ret;
}
socksys_file_ops = *current->files->fd[ret]->f_op;
sys_close(ret);
socksys_file_ops.poll = socksys_poll;
socksys_file_ops.release = socksys_release;
return 0;
}
void
cleanup_socksys(void)
{
if (unregister_chrdev (30, "socksys"))
printk ("Couldn't unregister socksys character device\n");
}
|
