1 /* $NetBSD: netio.c,v 1.7 1999/11/13 21:21:38 thorpej 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 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /* 40 * Copyright (c) 1995 Gordon W. Ross 41 * All rights reserved. 42 * 43 * Redistribution and use in source and binary forms, with or without 44 * modification, are permitted provided that the following conditions 45 * are met: 46 * 1. Redistributions of source code must retain the above copyright 47 * notice, this list of conditions and the following disclaimer. 48 * 2. Redistributions in binary form must reproduce the above copyright 49 * notice, this list of conditions and the following disclaimer in the 50 * documentation and/or other materials provided with the distribution. 51 * 3. The name of the author may not be used to endorse or promote products 52 * derived from this software without specific prior written permission. 53 * 4. All advertising materials mentioning features or use of this software 54 * must display the following acknowledgement: 55 * This product includes software developed by Gordon W. Ross 56 * 57 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 58 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 59 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 60 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 61 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 62 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 63 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 64 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 65 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 66 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 67 */ 68 69 /* 70 * This module implements a "raw device" interface suitable for 71 * use by the stand-alone I/O library NFS code. This interface 72 * does not support any "block" access, and exists only for the 73 * purpose of initializing the network interface, getting boot 74 * parameters, and performing the NFS mount. 75 * 76 * At open time, this does: 77 * 78 * find interface - netif_open() 79 * RARP for IP address - rarp_getipaddress() 80 * RPC/bootparams - callrpc(d, RPC_BOOTPARAMS, ...) 81 * RPC/mountd - nfs_mount(sock, ip, path) 82 * 83 * the root file handle from mountd is saved in a global 84 * for use by the NFS open code (NFS/lookup). 85 */ 86 87 #include <sys/param.h> 88 #include <sys/socket.h> 89 90 #include <net/if.h> 91 #include <netinet/in.h> 92 #include <netinet/in_systm.h> 93 94 #include <lib/libsa/stand.h> 95 #include <lib/libsa/net.h> 96 #include <lib/libsa/netif.h> 97 #include <lib/libsa/bootparam.h> 98 #include <lib/libsa/nfs.h> 99 100 #include <lib/libkern/libkern.h> 101 102 #include <hp300/stand/common/samachdep.h> 103 104 extern int nfs_root_node[]; /* XXX - get from nfs_mount() */ 105 106 struct in_addr myip, rootip, gateip; 107 n_long netmask; 108 char rootpath[FNAME_SIZE]; 109 110 int netdev_sock = -1; 111 static int open_count; 112 113 int netio_ask = 0; /* default to bootparam, can override */ 114 115 static char input_line[100]; 116 117 /* Why be any different? */ 118 #define SUN_BOOTPARAMS 119 120 /* 121 * Called by devopen after it sets f->f_dev to our devsw entry. 122 * This opens the low-level device and sets f->f_devdata. 123 */ 124 int 125 netopen(f, devname) 126 struct open_file *f; 127 char *devname; /* Device part of file name (or NULL). */ 128 { 129 int error = 0; 130 131 /* On first open, do netif open, mount, etc. */ 132 if (open_count == 0) { 133 /* Find network interface. */ 134 if ((netdev_sock = netif_open(devname)) < 0) 135 return (error=ENXIO); 136 if ((error = netmountroot(f, devname)) != 0) 137 return (error); 138 } 139 open_count++; 140 f->f_devdata = nfs_root_node; 141 return (error); 142 } 143 144 int 145 netclose(f) 146 struct open_file *f; 147 { 148 /* On last close, do netif close, etc. */ 149 if (open_count > 0) 150 if (--open_count == 0) 151 netif_close(netdev_sock); 152 f->f_devdata = NULL; 153 } 154 155 int 156 netstrategy(devdata, func, dblk, size, v_buf, rsize) 157 void *devdata; 158 int func; 159 daddr_t dblk; 160 size_t size; 161 void *v_buf; 162 size_t *rsize; 163 { 164 165 *rsize = size; 166 return EIO; 167 } 168 169 int 170 netmountroot(f, devname) 171 struct open_file *f; 172 char *devname; /* Device part of file name (or NULL). */ 173 { 174 int error; 175 struct iodesc *d; 176 177 #ifdef DEBUG 178 printf("netmountroot: %s\n", devname); 179 #endif 180 181 if (netio_ask) { 182 get_my_ip: 183 printf("My IP address? "); 184 bzero(input_line, sizeof(input_line)); 185 gets(input_line); 186 if ((myip.s_addr = inet_addr(input_line)) == 187 htonl(INADDR_NONE)) { 188 printf("invalid IP address: %s\n", input_line); 189 goto get_my_ip; 190 } 191 192 get_my_netmask: 193 printf("My netmask? "); 194 bzero(input_line, sizeof(input_line)); 195 gets(input_line); 196 if ((netmask = inet_addr(input_line)) == 197 htonl(INADDR_NONE)) { 198 printf("invalid netmask: %s\n", input_line); 199 goto get_my_netmask; 200 } 201 202 get_my_gateway: 203 printf("My gateway? "); 204 bzero(input_line, sizeof(input_line)); 205 gets(input_line); 206 if ((gateip.s_addr = inet_addr(input_line)) == 207 htonl(INADDR_NONE)) { 208 printf("invalid IP address: %s\n", input_line); 209 goto get_my_gateway; 210 } 211 212 get_server_ip: 213 printf("Server IP address? "); 214 bzero(input_line, sizeof(input_line)); 215 gets(input_line); 216 if ((rootip.s_addr = inet_addr(input_line)) == 217 htonl(INADDR_NONE)) { 218 printf("invalid IP address: %s\n", input_line); 219 goto get_server_ip; 220 } 221 222 get_server_path: 223 printf("Server path? "); 224 bzero(rootpath, sizeof(rootpath)); 225 gets(rootpath); 226 if (rootpath[0] == '\0' || rootpath[0] == '\n') 227 goto get_server_path; 228 229 if ((d = socktodesc(netdev_sock)) == NULL) 230 return (EMFILE); 231 232 d->myip = myip; 233 234 goto do_nfs_mount; 235 } 236 237 /* 238 * Get info for NFS boot: our IP address, our hostname, 239 * server IP address, and our root path on the server. 240 * There are two ways to do this: The old, Sun way, 241 * and the more modern, BOOTP way. (RFC951, RFC1048) 242 */ 243 244 #ifdef SUN_BOOTPARAMS 245 /* Get boot info using RARP and Sun bootparams. */ 246 247 /* Get our IP address. (rarp.c) */ 248 if (rarp_getipaddress(netdev_sock) == -1) 249 return (errno); 250 251 printf("boot: client IP address: %s\n", inet_ntoa(myip)); 252 253 /* Get our hostname, server IP address. */ 254 if (bp_whoami(netdev_sock)) 255 return (errno); 256 257 printf("boot: client name: %s\n", hostname); 258 259 /* Get the root pathname. */ 260 if (bp_getfile(netdev_sock, "root", &rootip, rootpath)) 261 return (errno); 262 263 #else 264 265 /* Get boot info using BOOTP way. (RFC951, RFC1048) */ 266 bootp(netdev_sock); 267 268 printf("Using IP address: %s\n", inet_ntoa(myip)); 269 270 printf("myip: %s (%s)", hostname, inet_ntoa(myip)); 271 if (gateip) 272 printf(", gateip: %s", inet_ntoa(gateip)); 273 if (mask) 274 printf(", mask: %s", intoa(netmask)); 275 printf("\n"); 276 277 #endif /* SUN_BOOTPARAMS */ 278 279 printf("root addr=%s path=%s\n", inet_ntoa(rootip), rootpath); 280 281 do_nfs_mount: 282 /* Get the NFS file handle (mount). */ 283 error = nfs_mount(netdev_sock, rootip, rootpath); 284 285 return (error); 286 } 287