1 /* $NetBSD: netio.c,v 1.19 2023/01/15 06:19:46 tsutsui Exp $ */
2
3 /*-
4 * Copyright (c) 1996, 1997 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Jason R. Thorpe.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 /*
33 * Copyright (c) 1995 Gordon W. Ross
34 * All rights reserved.
35 *
36 * Redistribution and use in source and binary forms, with or without
37 * modification, are permitted provided that the following conditions
38 * are met:
39 * 1. Redistributions of source code must retain the above copyright
40 * notice, this list of conditions and the following disclaimer.
41 * 2. Redistributions in binary form must reproduce the above copyright
42 * notice, this list of conditions and the following disclaimer in the
43 * documentation and/or other materials provided with the distribution.
44 *
45 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
46 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
47 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
48 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
49 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
50 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
51 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
52 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
53 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
54 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
55 */
56
57 /*
58 * This module implements a "raw device" interface suitable for
59 * use by the stand-alone I/O library NFS code. This interface
60 * does not support any "block" access, and exists only for the
61 * purpose of initializing the network interface, getting boot
62 * parameters, and performing the NFS mount.
63 *
64 * At open time, this does:
65 *
66 * find interface - netif_open()
67 * RARP for IP address - rarp_getipaddress()
68 * RPC/bootparams - callrpc(d, RPC_BOOTPARAMS, ...)
69 * RPC/mountd - nfs_mount(sock, ip, path)
70 *
71 * the root file handle from mountd is saved in a global
72 * for use by the NFS open code (NFS/lookup).
73 */
74
75 #include <sys/param.h>
76 #include <sys/socket.h>
77
78 #include <net/if.h>
79 #include <netinet/in.h>
80 #include <netinet/in_systm.h>
81
82 #include <lib/libsa/stand.h>
83 #include <lib/libsa/net.h>
84 #include <lib/libsa/netif.h>
85 #include <lib/libsa/bootp.h>
86 #include <lib/libsa/bootparam.h>
87 #include <lib/libsa/nfs.h>
88
89 #include <lib/libkern/libkern.h>
90
91 #include <hp300/stand/common/conf.h>
92 #include <hp300/stand/common/samachdep.h>
93
94 extern int nfs_root_node[]; /* XXX - get from nfs_mount() */
95
96 static int netdev_sock = -1;
97 static int open_count;
98
99 int netio_ask = 0; /* default to bootparam, can override */
100
101 static char input_line[100];
102
103 int netmountroot(struct open_file *, char *);
104
105 /*
106 * Called by devopen after it sets f->f_dev to our devsw entry.
107 * This opens the low-level device and sets f->f_devdata.
108 */
109 int
netopen(struct open_file * f,...)110 netopen(struct open_file *f, ...)
111 {
112 va_list ap;
113 char *devname;
114 int error = 0;
115
116 va_start(ap, f);
117 devname = va_arg(ap, char *);
118 va_end(ap);
119
120 /* On first open, do netif open, mount, etc. */
121 if (open_count == 0) {
122 /* Find network interface. */
123 if ((netdev_sock = netif_open(devname)) < 0)
124 return ENXIO;
125 if ((error = netmountroot(f, devname)) != 0)
126 return error;
127 }
128 open_count++;
129 f->f_devdata = nfs_root_node;
130 return error;
131 }
132
133 int
netclose(struct open_file * f)134 netclose(struct open_file *f)
135 {
136 /* On last close, do netif close, etc. */
137 if (open_count > 0)
138 if (--open_count == 0)
139 netif_close(netdev_sock);
140 f->f_devdata = NULL;
141
142 return 0;
143 }
144
145 int
netstrategy(void * devdata,int func,daddr_t dblk,size_t size,void * v_buf,size_t * rsize)146 netstrategy(void *devdata, int func, daddr_t dblk, size_t size, void *v_buf,
147 size_t *rsize)
148 {
149
150 *rsize = size;
151 return EIO;
152 }
153
154 int
netmountroot(struct open_file * f,char * devname)155 netmountroot(struct open_file *f, char *devname)
156 {
157 struct iodesc *d;
158
159 #ifdef DEBUG
160 printf("netmountroot: %s\n", devname);
161 #endif
162
163 if (netio_ask) {
164 get_my_ip:
165 printf("My IP address? ");
166 memset(input_line, 0, sizeof(input_line));
167 kgets(input_line, sizeof(input_line));
168 if ((myip.s_addr = inet_addr(input_line)) ==
169 htonl(INADDR_NONE)) {
170 printf("invalid IP address: %s\n", input_line);
171 goto get_my_ip;
172 }
173
174 get_my_netmask:
175 printf("My netmask? ");
176 memset(input_line, 0, sizeof(input_line));
177 kgets(input_line, sizeof(input_line));
178 if ((netmask = inet_addr(input_line)) ==
179 htonl(INADDR_NONE)) {
180 printf("invalid netmask: %s\n", input_line);
181 goto get_my_netmask;
182 }
183
184 get_my_gateway:
185 printf("My gateway? ");
186 memset(input_line, 0, sizeof(input_line));
187 kgets(input_line, sizeof(input_line));
188 if ((gateip.s_addr = inet_addr(input_line)) ==
189 htonl(INADDR_NONE)) {
190 printf("invalid IP address: %s\n", input_line);
191 goto get_my_gateway;
192 }
193
194 get_server_ip:
195 printf("Server IP address? ");
196 memset(input_line, 0, sizeof(input_line));
197 kgets(input_line, sizeof(input_line));
198 if ((rootip.s_addr = inet_addr(input_line)) ==
199 htonl(INADDR_NONE)) {
200 printf("invalid IP address: %s\n", input_line);
201 goto get_server_ip;
202 }
203
204 get_server_path:
205 printf("Server path? ");
206 memset(rootpath, 0, sizeof(rootpath));
207 kgets(rootpath, sizeof(rootpath));
208 if (rootpath[0] == '\0' || rootpath[0] == '\n')
209 goto get_server_path;
210
211 if ((d = socktodesc(netdev_sock)) == NULL)
212 return EMFILE;
213
214 d->myip = myip;
215
216 goto do_nfs_mount;
217 }
218
219 /*
220 * Get info for NFS boot: our IP address, our hostname,
221 * server IP address, and our root path on the server.
222 * There are two ways to do this: The old, Sun way,
223 * and the more modern, BOOTP way. (RFC951, RFC1048)
224 */
225
226 #ifdef SUN_BOOTPARAMS
227 /* Get boot info using RARP and Sun bootparams. */
228
229 /* Get our IP address. (rarp.c) */
230 if (rarp_getipaddress(netdev_sock) == -1)
231 return errno;
232
233 printf("boot: client IP address: %s\n", inet_ntoa(myip));
234
235 /* Get our hostname, server IP address. */
236 if (bp_whoami(netdev_sock))
237 return errno;
238
239 printf("boot: client name: %s\n", hostname);
240
241 /* Get the root pathname. */
242 if (bp_getfile(netdev_sock, "root", &rootip, rootpath))
243 return errno;
244
245 #else
246
247 /* Get boot info using BOOTP way. (RFC951, RFC1048) */
248 bootp(netdev_sock);
249
250 printf("boot: client IP address: %s \n", inet_ntoa(myip));
251
252 #endif /* SUN_BOOTPARAMS */
253
254 printf("root addr=%s path=%s\n", inet_ntoa(rootip), rootpath);
255
256 do_nfs_mount:
257 /* Get the NFS file handle (mount). */
258 if (nfs_mount(netdev_sock, rootip, rootpath))
259 return errno;
260
261 return 0;
262 }
263