setnetbootinfo.c revision 1.5.10.1
1 /* $NetBSD: setnetbootinfo.c,v 1.5.10.1 1997/11/13 21:08:19 mellon Exp $ */ 2 3 /* 4 * Copyright (c) 1997 Christopher G. Demetriou 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by Christopher G. Demetriou 18 * for the NetBSD Project. 19 * 4. The name of the author may not be used to endorse or promote products 20 * derived from this software without specific prior written permission 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 #include <stdio.h> 35 #include <stdlib.h> 36 #include <string.h> 37 #include <err.h> 38 #include <sys/fcntl.h> 39 #include <sys/stat.h> 40 #include <sys/socket.h> /* XXX */ 41 #include <net/if.h> /* XXX */ 42 #include <net/if_ether.h> 43 44 #include "stand/common/bbinfo.h" 45 46 int verbose, force, unset; 47 char *netboot, *outfile, *addr, *host; 48 49 char *outfilename; 50 51 extern char *ether_ntoa __P((struct ether_addr *s)); /* XXX */ 52 struct ether_addr *ether_addr, _ether_addr; 53 54 static void 55 usage() 56 { 57 58 fprintf(stderr, "usage:\n"); 59 fprintf(stderr, "\tsetnetboot [-v] [-f] [-o outfile] \\\n"); 60 fprintf(stderr, "\t [-a ether-address | -h ether-host] infile\n"); 61 fprintf(stderr, "\tsetnetboot [-v] -u -o outfile infile\n"); 62 exit(1); 63 } 64 65 int 66 main(argc, argv) 67 int argc; 68 char *argv[]; 69 { 70 struct netbbinfo *netbbinfop; 71 struct stat sb; 72 u_int64_t *qp, csum; 73 char *netbb; 74 int c, fd, i; 75 76 while ((c = getopt(argc, argv, "a:fh:o:uv")) != -1) { 77 switch (c) { 78 case 'a': 79 /* use the argument as an ethernet address */ 80 addr = optarg; 81 break; 82 case 'f': 83 /* set force flag in network boot block */ 84 force = 1; 85 break; 86 case 'h': 87 /* use the argument as a host to find in /etc/ethers */ 88 host = optarg; 89 break; 90 case 'o': 91 /* use the argument as the output file name */ 92 outfile = optarg; 93 break; 94 case 'u': 95 /* remove configuration information */ 96 unset = 1; 97 break; 98 case 'v': 99 /* Chat */ 100 verbose = 1; 101 break; 102 default: 103 usage(); 104 } 105 } 106 107 if ((argc - optind) != 1) 108 usage(); 109 netboot = argv[optind]; 110 111 if (unset && (force || host != NULL || addr != NULL)) 112 errx(1, "-u can't be used with -f, -h, or -a"); 113 114 if (unset) { 115 if (force || host != NULL || addr != NULL) 116 errx(1, "-u can't be used with -f, -h, or -a"); 117 if (outfile == NULL) 118 errx(1, "-u cannot be used without -o"); 119 } else { 120 if ((host == NULL && addr == NULL) || 121 (host != NULL && addr != NULL)) 122 usage(); 123 124 if (host != NULL) { 125 if (ether_hostton(host, &_ether_addr) == -1) 126 errx(1, "ethernet address couldn't be found for \"%s\"", 127 host); 128 ether_addr = &_ether_addr; 129 } else { /* addr != NULL */ 130 ether_addr = ether_aton(addr); 131 if (ether_addr == NULL) 132 errx(1, "ethernet address \"%s\" is invalid", 133 addr); 134 } 135 } 136 137 if (outfile != NULL) 138 outfilename = outfile; 139 else { 140 /* name + 12 for enet addr + '.' before enet addr + NUL */ 141 outfilename = malloc(strlen(netboot) + 14); 142 if (outfilename == NULL) 143 err(1, "malloc of output file name failed"); 144 sprintf(outfilename, "%s.%02x%02x%02x%02x%02x%02x", netboot, 145 ether_addr->ether_addr_octet[0], 146 ether_addr->ether_addr_octet[1], 147 ether_addr->ether_addr_octet[2], 148 ether_addr->ether_addr_octet[3], 149 ether_addr->ether_addr_octet[4], 150 ether_addr->ether_addr_octet[5]); 151 } 152 153 if (verbose) { 154 printf("netboot: %s\n", netboot); 155 if (unset) 156 printf("unsetting configuration\n"); 157 else 158 printf("ethernet address: %s (%s), force = %d\n", 159 ether_ntoa(ether_addr), host ? host : addr, force); 160 printf("output netboot: %s\n", outfilename); 161 } 162 163 164 if (verbose) 165 printf("opening %s...\n", netboot); 166 if ((fd = open(netboot, O_RDONLY, 0)) == -1) 167 err(1, "open: %s", netboot); 168 if (fstat(fd, &sb) == -1) 169 err(1, "fstat: %s", netboot); 170 if (!S_ISREG(sb.st_mode)) 171 errx(1, "%s must be a regular file", netboot); 172 173 if (verbose) 174 printf("reading %s...\n", netboot); 175 netbb = malloc(sb.st_size); 176 if (netbb == NULL) 177 err(1, "malloc of %lu for %s failed", 178 (unsigned long)sb.st_size, netboot); 179 if (read(fd, netbb, sb.st_size) != sb.st_size) 180 err(1, "read of %lu from %s failed", 181 (unsigned long)sb.st_size, netboot); 182 183 if (verbose) 184 printf("closing %s...\n", netboot); 185 close(fd); 186 187 if (verbose) 188 printf("looking for netbbinfo...\n"); 189 netbbinfop = NULL; 190 for (qp = (u_int64_t *)netbb; qp < (u_int64_t *)(netbb + sb.st_size); 191 qp++) { 192 if (((struct netbbinfo *)qp)->magic1 == 0xfeedbabedeadbeef && 193 ((struct netbbinfo *)qp)->magic2 == 0xfeedbeefdeadbabe) { 194 netbbinfop = (struct netbbinfo *)qp; 195 break; 196 } 197 } 198 if (netbbinfop == NULL) 199 errx(1, "netboot information structure not found in %s", 200 netboot); 201 if (verbose) 202 printf("found netbbinfo structure at offset 0x%lx.\n", 203 (unsigned long)((char *)netbbinfop - netbb)); 204 205 if (verbose) 206 printf("setting netbbinfo structure...\n"); 207 bzero(netbbinfop, sizeof *netbbinfop); 208 netbbinfop->magic1 = 0xfeedbabedeadbeef; 209 netbbinfop->magic2 = 0xfeedbeefdeadbabe; 210 netbbinfop->set = unset ? 0 : 1; 211 if (netbbinfop->set) { 212 for (i = 0; i < 6; i++) 213 netbbinfop->ether_addr[i] = 214 ether_addr->ether_addr_octet[i]; 215 netbbinfop->force = force; 216 } 217 netbbinfop->cksum = 0; 218 219 if (verbose) 220 printf("setting netbbinfo checksum...\n"); 221 csum = 0; 222 for (i = 0, qp = (u_int64_t *)netbbinfop; 223 i < (sizeof *netbbinfop / sizeof (u_int64_t)); i++, qp++) 224 csum += *qp; 225 netbbinfop->cksum = -csum; 226 227 if (verbose) 228 printf("opening %s...\n", outfilename); 229 if ((fd = open(outfilename, O_WRONLY | O_CREAT, 0666)) == -1) 230 err(1, "open: %s", outfilename); 231 232 if (verbose) 233 printf("writing %s...\n", outfilename); 234 if (write(fd, netbb, sb.st_size) != sb.st_size) 235 err(1, "write of %lu to %s failed", 236 (unsigned long)sb.st_size, outfilename); 237 238 if (verbose) 239 printf("closing %s...\n", outfilename); 240 close(fd); 241 242 free(netbb); 243 if (outfile == NULL) 244 free(outfilename); 245 246 exit (0); 247 } 248
Indexes created Thu Oct 23 22:10:10 GMT 2025