netio.c revision 1.2
1 /* $NetBSD: netio.c,v 1.2 1997/03/15 18:09:50 is Exp $ */ 2 3 /* 4 * Copyright (c) 1995, 1996 Jason R. Thorpe 5 * Copyright (c) 1995 Gordon W. Ross 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. The name of the author may not be used to endorse or promote products 17 * derived from this software without specific prior written permission. 18 * 4. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by Gordon W. Ross 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 /* 35 * This module implements a "raw device" interface suitable for 36 * use by the stand-alone I/O library NFS code. This interface 37 * does not support any "block" access, and exists only for the 38 * purpose of initializing the network interface, getting boot 39 * parameters, and performing the NFS mount. 40 * 41 * At open time, this does: 42 * 43 * find interface - netif_open() 44 * RARP for IP address - rarp_getipaddress() 45 * RPC/bootparams - callrpc(d, RPC_BOOTPARAMS, ...) 46 * RPC/mountd - nfs_mount(sock, ip, path) 47 * 48 * the root file handle from mountd is saved in a global 49 * for use by the NFS open code (NFS/lookup). 50 */ 51 52 #include <sys/param.h> 53 #include <sys/socket.h> 54 55 #include <net/if.h> 56 #include <netinet/in.h> 57 #include <lib/libsa/if_ether.h> 58 #include <netinet/in_systm.h> 59 60 #include <lib/libsa/stand.h> 61 #include <lib/libsa/net.h> 62 #include <lib/libsa/netif.h> 63 #include <lib/libsa/bootparam.h> 64 #include <lib/libsa/nfs.h> 65 66 #include <hp300/stand/common/samachdep.h> 67 68 extern int nfs_root_node[]; /* XXX - get from nfs_mount() */ 69 70 struct in_addr myip, rootip, gateip; 71 n_long netmask; 72 char rootpath[FNAME_SIZE]; 73 74 int netdev_sock = -1; 75 static int open_count; 76 77 int netio_ask = 0; /* default to bootparam, can override */ 78 79 static char input_line[100]; 80 81 /* Why be any different? */ 82 #define SUN_BOOTPARAMS 83 84 /* 85 * Called by devopen after it sets f->f_dev to our devsw entry. 86 * This opens the low-level device and sets f->f_devdata. 87 */ 88 int 89 netopen(f, devname) 90 struct open_file *f; 91 char *devname; /* Device part of file name (or NULL). */ 92 { 93 int error = 0; 94 95 /* On first open, do netif open, mount, etc. */ 96 if (open_count == 0) { 97 /* Find network interface. */ 98 if ((netdev_sock = netif_open(devname)) < 0) 99 return (error=ENXIO); 100 if ((error = netmountroot(f, devname)) != 0) 101 return (error); 102 } 103 open_count++; 104 f->f_devdata = nfs_root_node; 105 return (error); 106 } 107 108 int 109 netclose(f) 110 struct open_file *f; 111 { 112 /* On last close, do netif close, etc. */ 113 if (open_count > 0) 114 if (--open_count == 0) 115 netif_close(netdev_sock); 116 f->f_devdata = NULL; 117 } 118 119 int 120 netstrategy(devdata, func, dblk, size, v_buf, rsize) 121 void *devdata; 122 int func; 123 daddr_t dblk; 124 size_t size; 125 void *v_buf; 126 size_t *rsize; 127 { 128 129 *rsize = size; 130 return EIO; 131 } 132 133 int 134 netmountroot(f, devname) 135 struct open_file *f; 136 char *devname; /* Device part of file name (or NULL). */ 137 { 138 int error; 139 struct iodesc *d; 140 141 #ifdef DEBUG 142 printf("netmountroot: %s\n", devname); 143 #endif 144 145 if (netio_ask) { 146 get_my_ip: 147 printf("My IP address? "); 148 bzero(input_line, sizeof(input_line)); 149 gets(input_line); 150 if ((myip.s_addr = inet_addr(input_line)) == 151 htonl(INADDR_NONE)) { 152 printf("invalid IP address: %s\n", input_line); 153 goto get_my_ip; 154 } 155 156 get_my_netmask: 157 printf("My netmask? "); 158 bzero(input_line, sizeof(input_line)); 159 gets(input_line); 160 if ((netmask = inet_addr(input_line)) == 161 htonl(INADDR_NONE)) { 162 printf("invalid netmask: %s\n", input_line); 163 goto get_my_netmask; 164 } 165 166 get_my_gateway: 167 printf("My gateway? "); 168 bzero(input_line, sizeof(input_line)); 169 gets(input_line); 170 if ((gateip.s_addr = inet_addr(input_line)) == 171 htonl(INADDR_NONE)) { 172 printf("invalid IP address: %s\n", input_line); 173 goto get_my_gateway; 174 } 175 176 get_server_ip: 177 printf("Server IP address? "); 178 bzero(input_line, sizeof(input_line)); 179 gets(input_line); 180 if ((rootip.s_addr = inet_addr(input_line)) == 181 htonl(INADDR_NONE)) { 182 printf("invalid IP address: %s\n", input_line); 183 goto get_server_ip; 184 } 185 186 get_server_path: 187 printf("Server path? "); 188 bzero(rootpath, sizeof(rootpath)); 189 gets(rootpath); 190 if (rootpath[0] == '\0' || rootpath[0] == '\n') 191 goto get_server_path; 192 193 if ((d = socktodesc(netdev_sock)) == NULL) 194 return (EMFILE); 195 196 d->myip = myip; 197 198 goto do_nfs_mount; 199 } 200 201 /* 202 * Get info for NFS boot: our IP address, our hostname, 203 * server IP address, and our root path on the server. 204 * There are two ways to do this: The old, Sun way, 205 * and the more modern, BOOTP way. (RFC951, RFC1048) 206 */ 207 208 #ifdef SUN_BOOTPARAMS 209 /* Get boot info using RARP and Sun bootparams. */ 210 211 /* Get our IP address. (rarp.c) */ 212 if (rarp_getipaddress(netdev_sock) == -1) 213 return (errno); 214 215 printf("boot: client IP address: %s\n", inet_ntoa(myip)); 216 217 /* Get our hostname, server IP address. */ 218 if (bp_whoami(netdev_sock)) 219 return (errno); 220 221 printf("boot: client name: %s\n", hostname); 222 223 /* Get the root pathname. */ 224 if (bp_getfile(netdev_sock, "root", &rootip, rootpath)) 225 return (errno); 226 227 #else 228 229 /* Get boot info using BOOTP way. (RFC951, RFC1048) */ 230 bootp(netdev_sock); 231 232 printf("Using IP address: %s\n", inet_ntoa(myip)); 233 234 printf("myip: %s (%s)", hostname, inet_ntoa(myip)); 235 if (gateip) 236 printf(", gateip: %s", inet_ntoa(gateip)); 237 if (mask) 238 printf(", mask: %s", intoa(netmask)); 239 printf("\n"); 240 241 #endif /* SUN_BOOTPARAMS */ 242 243 printf("root addr=%s path=%s\n", inet_ntoa(rootip), rootpath); 244 245 do_nfs_mount: 246 /* Get the NFS file handle (mount). */ 247 error = nfs_mount(netdev_sock, rootip, rootpath); 248 249 return (error); 250 } 251
Indexes created Mon Oct 13 01:09:56 GMT 2025