1 /* $NetBSD: netio.c,v 1.14 2011/07/17 20:54:40 joerg 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 struct in_addr myip, rootip, gateip; 97 n_long netmask; 98 char rootpath[FNAME_SIZE]; 99 100 static int netdev_sock = -1; 101 static int open_count; 102 103 int netio_ask = 0; /* default to bootparam, can override */ 104 105 static char input_line[100]; 106 107 int netmountroot(struct open_file *, char *); 108 109 /* 110 * Called by devopen after it sets f->f_dev to our devsw entry. 111 * This opens the low-level device and sets f->f_devdata. 112 */ 113 int 114 netopen(struct open_file *f, ...) 115 { 116 va_list ap; 117 char *devname; 118 int error = 0; 119 120 va_start(ap, f); 121 devname = va_arg(ap, char *); 122 va_end(ap); 123 124 /* On first open, do netif open, mount, etc. */ 125 if (open_count == 0) { 126 /* Find network interface. */ 127 if ((netdev_sock = netif_open(devname)) < 0) 128 return ENXIO; 129 if ((error = netmountroot(f, devname)) != 0) 130 return error; 131 } 132 open_count++; 133 f->f_devdata = nfs_root_node; 134 return error; 135 } 136 137 int 138 netclose(struct open_file *f) 139 { 140 /* On last close, do netif close, etc. */ 141 if (open_count > 0) 142 if (--open_count == 0) 143 netif_close(netdev_sock); 144 f->f_devdata = NULL; 145 146 return 0; 147 } 148 149 int 150 netstrategy(void *devdata, int func, daddr_t dblk, size_t size, void *v_buf, 151 size_t *rsize) 152 { 153 154 *rsize = size; 155 return EIO; 156 } 157 158 int 159 netmountroot(struct open_file *f, char *devname) 160 { 161 int error; 162 struct iodesc *d; 163 164 #ifdef DEBUG 165 printf("netmountroot: %s\n", devname); 166 #endif 167 168 if (netio_ask) { 169 get_my_ip: 170 printf("My IP address? "); 171 memset(input_line, 0, sizeof(input_line)); 172 gets(input_line); 173 if ((myip.s_addr = inet_addr(input_line)) == 174 htonl(INADDR_NONE)) { 175 printf("invalid IP address: %s\n", input_line); 176 goto get_my_ip; 177 } 178 179 get_my_netmask: 180 printf("My netmask? "); 181 memset(input_line, 0, sizeof(input_line)); 182 gets(input_line); 183 if ((netmask = inet_addr(input_line)) == 184 htonl(INADDR_NONE)) { 185 printf("invalid netmask: %s\n", input_line); 186 goto get_my_netmask; 187 } 188 189 get_my_gateway: 190 printf("My gateway? "); 191 memset(input_line, 0, sizeof(input_line)); 192 gets(input_line); 193 if ((gateip.s_addr = inet_addr(input_line)) == 194 htonl(INADDR_NONE)) { 195 printf("invalid IP address: %s\n", input_line); 196 goto get_my_gateway; 197 } 198 199 get_server_ip: 200 printf("Server IP address? "); 201 memset(input_line, 0, sizeof(input_line)); 202 gets(input_line); 203 if ((rootip.s_addr = inet_addr(input_line)) == 204 htonl(INADDR_NONE)) { 205 printf("invalid IP address: %s\n", input_line); 206 goto get_server_ip; 207 } 208 209 get_server_path: 210 printf("Server path? "); 211 memset(rootpath, 0, sizeof(rootpath)); 212 gets(rootpath); 213 if (rootpath[0] == '\0' || rootpath[0] == '\n') 214 goto get_server_path; 215 216 if ((d = socktodesc(netdev_sock)) == NULL) 217 return EMFILE; 218 219 d->myip = myip; 220 221 goto do_nfs_mount; 222 } 223 224 /* 225 * Get info for NFS boot: our IP address, our hostname, 226 * server IP address, and our root path on the server. 227 * There are two ways to do this: The old, Sun way, 228 * and the more modern, BOOTP way. (RFC951, RFC1048) 229 */ 230 231 #ifdef SUN_BOOTPARAMS 232 /* Get boot info using RARP and Sun bootparams. */ 233 234 /* Get our IP address. (rarp.c) */ 235 if (rarp_getipaddress(netdev_sock) == -1) 236 return errno; 237 238 printf("boot: client IP address: %s\n", inet_ntoa(myip)); 239 240 /* Get our hostname, server IP address. */ 241 if (bp_whoami(netdev_sock)) 242 return errno; 243 244 printf("boot: client name: %s\n", hostname); 245 246 /* Get the root pathname. */ 247 if (bp_getfile(netdev_sock, "root", &rootip, rootpath)) 248 return errno; 249 250 #else 251 252 /* Get boot info using BOOTP way. (RFC951, RFC1048) */ 253 bootp(netdev_sock); 254 255 printf("boot: client IP address: %s \n", inet_ntoa(myip)); 256 257 #endif /* SUN_BOOTPARAMS */ 258 259 printf("root addr=%s path=%s\n", inet_ntoa(rootip), rootpath); 260 261 do_nfs_mount: 262 /* Get the NFS file handle (mount). */ 263 error = nfs_mount(netdev_sock, rootip, rootpath); 264 265 return error; 266 } 267