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
|
/* $NetBSD: net.c,v 1.1 1997/04/16 20:29:18 thorpej Exp $ */
/*
* Copyright (C) 1995 Wolfgang Solfrank.
* Copyright (C) 1995 TooLs GmbH.
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by TooLs GmbH.
* 4. The name of TooLs GmbH may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``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 TOOLS GMBH 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.
*/
/*
* This module implements a "raw device" interface suitable for
* use by the stand-alone I/O library NFS code. This interface
* does not support any "block" access, and exists only for the
* purpose of initializing the network interface, getting boot
* parameters, and performing the NFS mount.
*
* At open time, this does:
*
* find interface - netif_open()
* BOOTP - bootp()
* RPC/mountd - nfs_mount()
*
* The root file handle from mountd is saved in a global
* for use by the NFS open code (NFS/lookup).
*
* Note: this is based in part on sys/arch/sparc/stand/net.c
*/
#include <sys/param.h>
#include <sys/socket.h>
#include <net/if.h>
#include <netinet/in.h>
#include <netinet/if_ether.h>
#include <netinet/in_systm.h>
#include <lib/libsa/stand.h>
#include <lib/libsa/net.h>
#include <lib/libsa/netif.h>
char rootpath[FNAME_SIZE];
static int netdev_sock = -1;
static int open_count;
/*
* Called by devopen after it sets f->f_dev to our devsw entry.
* This opens the low-level device and sets f->f_devdata.
*/
int
net_open(op)
struct of_dev *op;
{
int error = 0;
/*
* On first open, do netif open, mount, etc.
*/
if (open_count == 0) {
/* Find network interface. */
if ((netdev_sock = netif_open(op)) < 0) {
error = errno;
goto bad;
}
if ((error = net_mountroot()) != 0)
goto bad;
}
open_count++;
bad:
if (netdev_sock >= 0 && open_count == 0) {
netif_close(netdev_sock);
netdev_sock = -1;
}
return error;
}
int
net_close(op)
struct of_dev *op;
{
/*
* On last close, do netif close, etc.
*/
if (open_count > 0)
if (--open_count == 0) {
netif_close(netdev_sock);
netdev_sock = -1;
}
}
int
net_mountroot()
{
#ifdef DEBUG
printf("net_mountroot\n");
#endif
/*
* Get info for NFS boot: our IP address, out hostname,
* server IP address, and our root path on the server.
* We use BOOTP (RFC951, RFC1532) exclusively as mandated
* by PowerPC Reference Platform Specification I.4.2
*/
bootp(netdev_sock);
if (myip.s_addr == 0)
return ETIMEDOUT;
printf("Using IP address: %s\n", inet_ntoa(myip));
#ifdef DEBUG
printf("myip: %s (%s)", hostname, inet_ntoa(myip));
if (gateip.s_addr)
printf(", gateip: %s", inet_ntoa(gateip));
if (netmask)
printf(", netmask: %s", intoa(netmask));
printf("\n");
#endif
printf("root addr=%s path=%s\n", inet_ntoa(rootip), rootpath);
/*
* Get the NFS file handle (mount).
*/
if (nfs_mount(netdev_sock, rootip, rootpath) < 0)
return errno;
return 0;
}
|
