vax.c revision 1.7
1 /* $NetBSD: vax.c,v 1.7 2002/05/14 06:40:33 lukem Exp $ */ 2 3 /*- 4 * Copyright (c) 1999, 2002 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Simon Burge. 9 * 10 * This code is derived from software contributed to The NetBSD Foundation 11 * by Luke Mewburn of Wasabi Systems. 12 * 13 * Redistribution and use in source and binary forms, with or without 14 * modification, are permitted provided that the following conditions 15 * are met: 16 * 1. Redistributions of source code must retain the above copyright 17 * notice, this list of conditions and the following disclaimer. 18 * 2. Redistributions in binary form must reproduce the above copyright 19 * notice, this list of conditions and the following disclaimer in the 20 * documentation and/or other materials provided with the distribution. 21 * 3. All advertising materials mentioning features or use of this software 22 * must display the following acknowledgement: 23 * This product includes software developed by the NetBSD 24 * Foundation, Inc. and its contributors. 25 * 4. Neither the name of The NetBSD Foundation nor the names of its 26 * contributors may be used to endorse or promote products derived 27 * from this software without specific prior written permission. 28 * 29 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 30 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 31 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 32 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 33 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 34 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 35 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 36 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 37 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 38 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 39 * POSSIBILITY OF SUCH DAMAGE. 40 */ 41 42 /* 43 * Copyright (c) 1999 Christopher G. Demetriou. All rights reserved. 44 * 45 * Redistribution and use in source and binary forms, with or without 46 * modification, are permitted provided that the following conditions 47 * are met: 48 * 1. Redistributions of source code must retain the above copyright 49 * notice, this list of conditions and the following disclaimer. 50 * 2. Redistributions in binary form must reproduce the above copyright 51 * notice, this list of conditions and the following disclaimer in the 52 * documentation and/or other materials provided with the distribution. 53 * 3. All advertising materials mentioning features or use of this software 54 * must display the following acknowledgement: 55 * This product includes software developed by Christopher G. Demetriou 56 * for the NetBSD Project. 57 * 4. The name of the author may not be used to endorse or promote products 58 * derived from this software without specific prior written permission 59 * 60 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 61 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 62 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 63 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 64 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 65 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 66 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 67 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 68 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 69 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 70 */ 71 72 #include <sys/cdefs.h> 73 #if defined(__RCSID) && !defined(__lint) 74 __RCSID("$NetBSD: vax.c,v 1.7 2002/05/14 06:40:33 lukem Exp $"); 75 #endif /* !__lint */ 76 77 #if HAVE_CONFIG_H 78 #include "config.h" 79 #endif 80 81 #include <sys/param.h> 82 #include <sys/stat.h> 83 84 #include <assert.h> 85 #include <err.h> 86 #include <stddef.h> 87 #include <stdio.h> 88 #include <stdlib.h> 89 #include <unistd.h> 90 91 #include "installboot.h" 92 93 static int load_bootstrap(ib_params *, char **, 94 uint32_t *, uint32_t *, size_t *); 95 96 97 int 98 vax_parseopt(ib_params *params, const char *option) 99 { 100 101 if (parseoptionflag(params, option, IB_APPEND | IB_SUNSUM)) 102 return (1); 103 104 warnx("Unknown -o option `%s'", option); 105 return (0); 106 } 107 108 int 109 vax_clearboot(ib_params *params) 110 { 111 struct vax_boot_block bb; 112 ssize_t rv; 113 114 assert(params != NULL); 115 assert(params->fsfd != -1); 116 assert(params->filesystem != NULL); 117 assert(sizeof(struct vax_boot_block) == VAX_BOOT_BLOCK_BLOCKSIZE); 118 119 if (params->flags & (IB_STAGE1START | IB_APPEND)) { 120 warnx("Can't use `-b bno' or `-o append' with `-c'"); 121 return (0); 122 } 123 if (params->flags & IB_STAGE2START) { 124 warnx("`-B bno' is not supported for %s", 125 params->machine->name); 126 return (0); 127 } 128 129 rv = pread(params->fsfd, &bb, sizeof(bb), VAX_BOOT_BLOCK_OFFSET); 130 if (rv == -1) { 131 warn("Reading `%s'", params->filesystem); 132 return (0); 133 } else if (rv != sizeof(bb)) { 134 warnx("Reading `%s': short read", params->filesystem); 135 return (0); 136 } 137 138 if (bb.bb_id_offset * 2 != offsetof(struct vax_boot_block, bb_magic1) 139 || bb.bb_magic1 != VAX_BOOT_MAGIC1) { 140 warnx( 141 "Old boot block magic number invalid; boot block invalid"); 142 return (0); 143 } 144 145 bb.bb_id_offset = 1; 146 bb.bb_mbone = 0; 147 bb.bb_lbn_hi = 0; 148 bb.bb_lbn_low = 0; 149 150 if (params->flags & IB_SUNSUM) { 151 uint16_t sum; 152 153 sum = compute_sunsum((uint16_t *)&bb); 154 if (! set_sunsum(params, (uint16_t *)&bb, sum)) 155 return (0); 156 } 157 158 if (params->flags & IB_VERBOSE) 159 printf("%slearing boot block\n", 160 (params->flags & IB_NOWRITE) ? "Not c" : "C"); 161 if (params->flags & IB_NOWRITE) 162 return (1); 163 164 rv = pwrite(params->fsfd, &bb, sizeof(bb), VAX_BOOT_BLOCK_OFFSET); 165 if (rv == -1) { 166 warn("Writing `%s'", params->filesystem); 167 return (0); 168 } else if (rv != sizeof(bb)) { 169 warnx("Writing `%s': short write", params->filesystem); 170 return (0); 171 } 172 173 return (1); 174 } 175 176 int 177 vax_setboot(ib_params *params) 178 { 179 struct stat bootstrapsb; 180 struct vax_boot_block bb; 181 uint32_t startblock; 182 int retval; 183 char *bootstrapbuf; 184 size_t bootstrapsize; 185 uint32_t bootstrapload, bootstrapexec; 186 ssize_t rv; 187 188 assert(params != NULL); 189 assert(params->fsfd != -1); 190 assert(params->filesystem != NULL); 191 assert(params->s1fd != -1); 192 assert(params->stage1 != NULL); 193 assert(sizeof(struct vax_boot_block) == VAX_BOOT_BLOCK_BLOCKSIZE); 194 195 retval = 0; 196 bootstrapbuf = NULL; 197 198 if ((params->flags & IB_STAGE1START) && 199 (params->flags & IB_APPEND)) { 200 warnx("Can't use `-b bno' with `-o append'"); 201 goto done; 202 } 203 if (params->flags & IB_STAGE2START) { 204 warnx("`-B bno' is not supported for %s", 205 params->machine->name); 206 goto done; 207 } 208 209 if (fstat(params->s1fd, &bootstrapsb) == -1) { 210 warn("Examining `%s'", params->stage1); 211 goto done; 212 } 213 if (!S_ISREG(bootstrapsb.st_mode)) { 214 warnx("`%s' must be a regular file", params->stage1); 215 goto done; 216 } 217 if (! load_bootstrap(params, &bootstrapbuf, &bootstrapload, 218 &bootstrapexec, &bootstrapsize)) 219 goto done; 220 221 rv = pread(params->fsfd, &bb, sizeof(bb), VAX_BOOT_BLOCK_OFFSET); 222 if (rv == -1) { 223 warn("Reading `%s'", params->filesystem); 224 goto done; 225 } else if (rv != sizeof(bb)) { 226 warnx("Reading `%s': short read", params->filesystem); 227 goto done; 228 } 229 230 /* fill in the updated boot block fields */ 231 if (params->flags & IB_APPEND) { 232 struct stat filesyssb; 233 234 if (fstat(params->fsfd, &filesyssb) == -1) { 235 warn("Examining `%s'", params->filesystem); 236 goto done; 237 } 238 if (!S_ISREG(filesyssb.st_mode)) { 239 warnx( 240 "`%s' must be a regular file to append a bootstrap", 241 params->filesystem); 242 goto done; 243 } 244 startblock = howmany(filesyssb.st_size, 245 VAX_BOOT_BLOCK_BLOCKSIZE); 246 } else if (params->flags & IB_STAGE1START) { 247 startblock = params->s1start; 248 } else { 249 startblock = VAX_BOOT_BLOCK_OFFSET / VAX_BOOT_BLOCK_BLOCKSIZE 250 + 1; 251 } 252 253 bb.bb_id_offset = offsetof(struct vax_boot_block, bb_magic1) / 2; 254 bb.bb_mbone = 1; 255 bb.bb_lbn_hi = htole16((uint16_t) (startblock >> 16)); 256 bb.bb_lbn_low = htole16((uint16_t) (startblock >> 0)); 257 /* 258 * Now the identification block 259 */ 260 bb.bb_magic1 = VAX_BOOT_MAGIC1; 261 bb.bb_mbz1 = 0; 262 bb.bb_sum1 = ~(bb.bb_magic1 + bb.bb_mbz1 + bb.bb_pad1); 263 264 bb.bb_mbz2 = 0; 265 bb.bb_volinfo = VAX_BOOT_VOLINFO_NONE; 266 bb.bb_pad2a = 0; 267 bb.bb_pad2b = 0; 268 269 bb.bb_size = htole32(bootstrapsize / VAX_BOOT_BLOCK_BLOCKSIZE); 270 bb.bb_load = htole32(VAX_BOOT_LOAD); 271 bb.bb_entry = htole32(VAX_BOOT_ENTRY); 272 bb.bb_sum3 = htole32(le32toh(bb.bb_size) + le32toh(bb.bb_load) \ 273 + le32toh(bb.bb_entry)); 274 275 if (params->flags & IB_SUNSUM) { 276 uint16_t sum; 277 278 sum = compute_sunsum((uint16_t *)&bb); 279 if (! set_sunsum(params, (uint16_t *)&bb, sum)) 280 goto done; 281 } 282 283 if (params->flags & IB_VERBOSE) { 284 printf("Bootstrap start sector: %u\n", startblock); 285 printf("Bootstrap sector count: %u\n", le32toh(bb.bb_size)); 286 printf("%sriting bootstrap\n", 287 (params->flags & IB_NOWRITE) ? "Not w" : "W"); 288 } 289 if (params->flags & IB_NOWRITE) { 290 retval = 1; 291 goto done; 292 } 293 rv = pwrite(params->fsfd, bootstrapbuf, bootstrapsize, 294 startblock * VAX_BOOT_BLOCK_BLOCKSIZE); 295 if (rv == -1) { 296 warn("Writing `%s'", params->filesystem); 297 goto done; 298 } else if (rv != bootstrapsize) { 299 warnx("Writing `%s': short write", params->filesystem); 300 goto done; 301 } 302 303 if (params->flags & IB_VERBOSE) 304 printf("Writing boot block\n"); 305 rv = pwrite(params->fsfd, &bb, sizeof(bb), VAX_BOOT_BLOCK_OFFSET); 306 if (rv == -1) { 307 warn("Writing `%s'", params->filesystem); 308 goto done; 309 } else if (rv != sizeof(bb)) { 310 warnx("Writing `%s': short write", params->filesystem); 311 goto done; 312 } else { 313 retval = 1; 314 } 315 316 done: 317 if (bootstrapbuf) 318 free(bootstrapbuf); 319 return (retval); 320 } 321 322 static int 323 load_bootstrap(ib_params *params, char **data, 324 uint32_t *loadaddr, uint32_t *execaddr, size_t *len) 325 { 326 ssize_t cc; 327 size_t buflen; 328 329 buflen = 512 * (VAX_BOOT_SIZE + 1); 330 *data = malloc(buflen); 331 if (*data == NULL) { 332 warn("Allocating %lu bytes", (unsigned long) buflen); 333 return (0); 334 } 335 336 cc = pread(params->s1fd, *data, buflen, 0); 337 if (cc <= 0) { 338 warn("Reading `%s'", params->stage1); 339 return (0); 340 } 341 if (cc > 512 * VAX_BOOT_SIZE) { 342 warnx("`%s': too large", params->stage1); 343 return (0); 344 } 345 346 *len = roundup(cc, VAX_BOOT_BLOCK_BLOCKSIZE); 347 *loadaddr = VAX_BOOT_LOAD; 348 *execaddr = VAX_BOOT_ENTRY; 349 return (1); 350 } 351
Indexes created Tue Sep 30 11:09:46 GMT 2025