1 /* $NetBSD: netio.c,v 1.12 2008/04/28 20:23:19 martin 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 * 3. The name of the author may not be used to endorse or promote products 45 * derived from this software without specific prior written permission. 46 * 4. All advertising materials mentioning features or use of this software 47 * must display the following acknowledgement: 48 * This product includes software developed by Gordon W. Ross 49 * 50 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 51 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 52 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 53 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 54 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 55 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 56 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 57 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 58 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 59 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 60 */ 61 62 /* 63 * This module implements a "raw device" interface suitable for 64 * use by the stand-alone I/O library NFS code. This interface 65 * does not support any "block" access, and exists only for the 66 * purpose of initializing the network interface, getting boot 67 * parameters, and performing the NFS mount. 68 * 69 * At open time, this does: 70 * 71 * find interface - netif_open() 72 * RARP for IP address - rarp_getipaddress() 73 * RPC/bootparams - callrpc(d, RPC_BOOTPARAMS, ...) 74 * RPC/mountd - nfs_mount(sock, ip, path) 75 * 76 * the root file handle from mountd is saved in a global 77 * for use by the NFS open code (NFS/lookup). 78 */ 79 80 #include <sys/param.h> 81 #include <sys/socket.h> 82 83 #include <machine/stdarg.h> 84 85 #include <net/if.h> 86 #include <netinet/in.h> 87 #include <netinet/in_systm.h> 88 89 #include <lib/libsa/stand.h> 90 #include <lib/libsa/net.h> 91 #include <lib/libsa/netif.h> 92 #include <lib/libsa/bootp.h> 93 #include <lib/libsa/bootparam.h> 94 #include <lib/libsa/nfs.h> 95 96 #include <lib/libkern/libkern.h> 97 98 #include <hp300/stand/common/conf.h> 99 #include <hp300/stand/common/samachdep.h> 100 101 extern int nfs_root_node[]; /* XXX - get from nfs_mount() */ 102 103 struct in_addr myip, rootip, gateip; 104 n_long netmask; 105 char rootpath[FNAME_SIZE]; 106 107 static int netdev_sock = -1; 108 static int open_count; 109 110 int netio_ask = 0; /* default to bootparam, can override */ 111 112 static char input_line[100]; 113 114 int netmountroot(struct open_file *, char *); 115 116 /* 117 * Called by devopen after it sets f->f_dev to our devsw entry. 118 * This opens the low-level device and sets f->f_devdata. 119 */ 120 int 121 netopen(struct open_file *f, ...) 122 { 123 va_list ap; 124 char *devname; 125 int error = 0; 126 127 va_start(ap, f); 128 devname = va_arg(ap, char *); 129 va_end(ap); 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 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(struct open_file *f) 146 { 147 /* On last close, do netif close, etc. */ 148 if (open_count > 0) 149 if (--open_count == 0) 150 netif_close(netdev_sock); 151 f->f_devdata = NULL; 152 153 return 0; 154 } 155 156 int 157 netstrategy(void *devdata, int func, daddr_t dblk, size_t size, void *v_buf, 158 size_t *rsize) 159 { 160 161 *rsize = size; 162 return EIO; 163 } 164 165 int 166 netmountroot(struct open_file *f, char *devname) 167 { 168 int error; 169 struct iodesc *d; 170 171 #ifdef DEBUG 172 printf("netmountroot: %s\n", devname); 173 #endif 174 175 if (netio_ask) { 176 get_my_ip: 177 printf("My IP address? "); 178 memset(input_line, 0, sizeof(input_line)); 179 gets(input_line); 180 if ((myip.s_addr = inet_addr(input_line)) == 181 htonl(INADDR_NONE)) { 182 printf("invalid IP address: %s\n", input_line); 183 goto get_my_ip; 184 } 185 186 get_my_netmask: 187 printf("My netmask? "); 188 memset(input_line, 0, sizeof(input_line)); 189 gets(input_line); 190 if ((netmask = inet_addr(input_line)) == 191 htonl(INADDR_NONE)) { 192 printf("invalid netmask: %s\n", input_line); 193 goto get_my_netmask; 194 } 195 196 get_my_gateway: 197 printf("My gateway? "); 198 memset(input_line, 0, sizeof(input_line)); 199 gets(input_line); 200 if ((gateip.s_addr = inet_addr(input_line)) == 201 htonl(INADDR_NONE)) { 202 printf("invalid IP address: %s\n", input_line); 203 goto get_my_gateway; 204 } 205 206 get_server_ip: 207 printf("Server IP address? "); 208 memset(input_line, 0, sizeof(input_line)); 209 gets(input_line); 210 if ((rootip.s_addr = inet_addr(input_line)) == 211 htonl(INADDR_NONE)) { 212 printf("invalid IP address: %s\n", input_line); 213 goto get_server_ip; 214 } 215 216 get_server_path: 217 printf("Server path? "); 218 memset(rootpath, 0, sizeof(rootpath)); 219 gets(rootpath); 220 if (rootpath[0] == '\0' || rootpath[0] == '\n') 221 goto get_server_path; 222 223 if ((d = socktodesc(netdev_sock)) == NULL) 224 return EMFILE; 225 226 d->myip = myip; 227 228 goto do_nfs_mount; 229 } 230 231 /* 232 * Get info for NFS boot: our IP address, our hostname, 233 * server IP address, and our root path on the server. 234 * There are two ways to do this: The old, Sun way, 235 * and the more modern, BOOTP way. (RFC951, RFC1048) 236 */ 237 238 #ifdef SUN_BOOTPARAMS 239 /* Get boot info using RARP and Sun bootparams. */ 240 241 /* Get our IP address. (rarp.c) */ 242 if (rarp_getipaddress(netdev_sock) == -1) 243 return errno; 244 245 printf("boot: client IP address: %s\n", inet_ntoa(myip)); 246 247 /* Get our hostname, server IP address. */ 248 if (bp_whoami(netdev_sock)) 249 return errno; 250 251 printf("boot: client name: %s\n", hostname); 252 253 /* Get the root pathname. */ 254 if (bp_getfile(netdev_sock, "root", &rootip, rootpath)) 255 return errno; 256 257 #else 258 259 /* Get boot info using BOOTP way. (RFC951, RFC1048) */ 260 bootp(netdev_sock); 261 262 printf("boot: client IP address: %s \n", inet_ntoa(myip)); 263 264 #endif /* SUN_BOOTPARAMS */ 265 266 printf("root addr=%s path=%s\n", inet_ntoa(rootip), rootpath); 267 268 do_nfs_mount: 269 /* Get the NFS file handle (mount). */ 270 error = nfs_mount(netdev_sock, rootip, rootpath); 271 272 return error; 273 } 274