mkboot.c revision 1.5
1 /* $NetBSD: mkboot.c,v 1.5 2024/10/31 01:21:12 gutteridge Exp $ */ 2 3 /* $OpenBSD: mkboot.c,v 1.9 2001/05/17 00:57:55 pvalchev Exp $ */ 4 5 /* 6 * Copyright (c) 1990, 1993 7 * The Regents of the University of California. All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * @(#)mkboot.c 8.1 (Berkeley) 7/15/93 34 */ 35 36 #if 0 37 #ifndef lint 38 static char copyright[] = 39 "@(#) Copyright (c) 1990, 1993\n\ 40 The Regents of the University of California. All rights reserved.\n"; 41 #endif /* not lint */ 42 43 #ifndef lint 44 static char rcsid[] = "$OpenBSD: mkboot.c,v 1.9 2001/05/17 00:57:55 pvalchev Exp $"; 45 #endif /* not lint */ 46 #endif 47 48 #if HAVE_NBTOOL_CONFIG_H 49 #include "nbtool_config.h" 50 #include "../../sys/sys/bootblock.h" 51 #else 52 #include <sys/bootblock.h> 53 #endif 54 55 #include <sys/param.h> 56 #include <sys/endian.h> 57 #include <sys/file.h> 58 #include <sys/stat.h> 59 #include <string.h> 60 #include <stdlib.h> 61 #include <unistd.h> 62 #include <time.h> 63 #include <err.h> 64 65 /* BFD ELF headers */ 66 #include <elf/common.h> 67 #include <elf/external.h> 68 69 #define IS_ELF(ehdr) ((ehdr).e_ident[EI_MAG0] == ELFMAG0 && \ 70 (ehdr).e_ident[EI_MAG1] == ELFMAG1 && \ 71 (ehdr).e_ident[EI_MAG2] == ELFMAG2 && \ 72 (ehdr).e_ident[EI_MAG3] == ELFMAG3) 73 74 /* 75 * Macros to get values from multi-byte ELF header fields. These assume 76 * a big-endian image. 77 */ 78 #define ELFGET16(x) (((x)[0] << 8) | (x)[1]) 79 80 #define ELFGET32(x) (((x)[0] << 24) | ((x)[1] << 16) | \ 81 ((x)[2] << 8) | (x)[3]) 82 83 /* 84 * Header prepended to each a.out file. 85 */ 86 struct exec { 87 u_long a_midmag; /* htobe32(flags<<26 | mid<<16 | magic) */ 88 u_long a_text; /* text segment size */ 89 u_long a_data; /* initialized data size */ 90 u_long a_bss; /* uninitialized data size */ 91 u_long a_syms; /* symbol table size */ 92 u_long a_entry; /* entry point */ 93 u_long a_trsize; /* text relocation size */ 94 u_long a_drsize; /* data relocation size */ 95 }; 96 97 /* a_magic */ 98 #define OMAGIC 0407 /* old impure format */ 99 #define NMAGIC 0410 /* read-only text */ 100 #define ZMAGIC 0413 /* demand load format */ 101 #define QMAGIC 0314 /* "compact" demand load format; deprecated */ 102 103 #define N_GETMAGIC(ex) \ 104 ((((ex).a_midmag)&0xffff0000) ? \ 105 (be32toh((uint32_t)((ex).a_midmag))&0xffff) : ((ex).a_midmag)) 106 107 #include <stdio.h> 108 #include <ctype.h> 109 110 int putfile(char *, int); 111 void __dead usage(void); 112 void bcddate(char *, char *); 113 char *lifname(char *); 114 int cksum(int, int *, int); 115 116 char *to_file; 117 int loadpoint, verbose; 118 u_long entry; 119 time_t repro_epoch = 0; 120 121 /* 122 * Old Format: 123 * sector 0: LIF volume header (40 bytes) 124 * sector 1: <unused> 125 * sector 2: LIF directory (8 x 32 == 256 bytes) 126 * sector 3-: LIF file 0, LIF file 1, etc. 127 * where sectors are 256 bytes. 128 * 129 * New Format: 130 * sector 0: LIF volume header (40 bytes) 131 * sector 1: <unused> 132 * sector 2: LIF directory (8 x 32 == 256 bytes) 133 * sector 3: <unused> 134 * sector 4-31: disklabel (~300 bytes right now) 135 * sector 32-: LIF file 0, LIF file 1, etc. 136 */ 137 int 138 main(int argc, char **argv) 139 { 140 int to, n, pos, c; 141 char buf[HPPA_LIF_FILESTART]; 142 struct hppa_lifvol *lifv = (struct hppa_lifvol *)buf; 143 struct hppa_lifdir *lifd = (struct hppa_lifdir *)(buf + HPPA_LIF_DIRSTART); 144 145 while ((c = getopt(argc, argv, "l:t:v")) != -1) { 146 switch (c) { 147 case 'l': 148 loadpoint = strtol(optarg, NULL, 0); 149 break; 150 case 't': 151 repro_epoch = atoll(optarg); 152 break; 153 case 'v': 154 verbose++; 155 break; 156 default: 157 usage(); 158 } 159 } 160 if (argc - optind < 2) 161 usage(); 162 else if (argc - optind > 8) 163 errx(1, "too many boot programs (max 8 supported)"); 164 165 to_file = argv[--argc]; 166 if ((to = open(to_file, O_RDWR | O_TRUNC | O_CREAT, 0644)) < 0) 167 err(1, "%s: open", to_file); 168 169 memset(buf, 0, sizeof(buf)); 170 171 /* record volume info */ 172 lifv->vol_id = htobe16(HPPA_LIF_VOL_ID); 173 strncpy(lifv->vol_label, "MKBOOT", 6); 174 lifv->vol_addr = htobe32(hppa_btolifs(HPPA_LIF_DIRSTART)); 175 lifv->vol_oct = htobe16(HPPA_LIF_VOL_OCT); 176 lifv->vol_dirsize = htobe32(hppa_btolifs(HPPA_LIF_DIRSIZE)); 177 lifv->vol_version = htobe16(1); 178 lifv->vol_number = htobe32(1); 179 lifv->vol_lastvol = htobe32(1); 180 lifv->vol_length = HPPA_LIF_FILESTART; /* ... so far. */ 181 bcddate(to_file, lifv->vol_toc); 182 lifv->ipl_addr = htobe32(HPPA_LIF_FILESTART); 183 184 argv += optind; 185 argc -= optind; 186 optind = 0; 187 for (pos = HPPA_LIF_FILESTART; optind < argc; optind++) { 188 189 /* output bootfile */ 190 if (lseek(to, pos, SEEK_SET) < 0) 191 err(1, "%s: lseek", to_file); 192 lifd[optind].dir_addr = htobe32(hppa_btolifs(pos)); 193 n = hppa_btolifs(putfile(argv[optind], to)); 194 if (lifv->ipl_entry == 0) { 195 lifv->ipl_entry = htobe32(loadpoint + entry); 196 lifv->ipl_size = htobe32(hppa_lifstob(n)); 197 lifd[optind].dir_type = htobe16(HPPA_LIF_DIR_ISL); 198 lifd[optind].dir_implement = 0; 199 } else { 200 lifd[optind].dir_type = htobe16(HPPA_LIF_DIR_TYPE); 201 lifd[optind].dir_implement = htobe32(loadpoint + entry); 202 } 203 204 memcpy(lifd[optind].dir_name, lifname(argv[optind]), 205 sizeof(lifd[optind].dir_name)); 206 lifd[optind].dir_length = htobe32(n); 207 bcddate(argv[optind], lifd[optind].dir_toc); 208 lifd[optind].dir_flag = htobe16(HPPA_LIF_DIR_FLAG); 209 210 lifv->vol_length += n; 211 pos += hppa_lifstob(n); 212 } 213 214 /* terminate the directory */ 215 lifd[optind].dir_type = htobe16(0xffff); 216 217 /* byte-swap the length now that we're done computing it */ 218 lifv->vol_length = htobe32(lifv->vol_length); 219 220 /* output volume/directory header info */ 221 if (lseek(to, HPPA_LIF_VOLSTART, SEEK_SET) < 0) 222 err(1, "%s: lseek", to_file); 223 if (write(to, buf, sizeof(buf)) != sizeof(buf)) 224 err(1, "%s: write LIF volume", to_file); 225 lseek(to, 0, SEEK_END); 226 227 if (close(to) < 0) 228 err(1, "%s", to_file); 229 230 return(0); 231 } 232 233 int 234 putfile(char *from_file, int to) 235 { 236 struct exec ex; 237 char buf[2048]; 238 int n, total; 239 int from, check_sum = 0; 240 struct hppa_lifload load; 241 Elf32_External_Ehdr elf_header; 242 Elf32_External_Phdr *elf_segments = NULL; 243 int i, header_count, memory_needed, elf_load_image_segment; 244 245 if ((from = open(from_file, O_RDONLY)) < 0) 246 err(1, "%s", from_file); 247 248 n = read(from, &ex, sizeof(ex)); 249 if (n != sizeof(ex)) 250 err(1, "%s: reading file header", from_file); 251 252 entry = ex.a_entry; 253 if (N_GETMAGIC(ex) == OMAGIC || N_GETMAGIC(ex) == NMAGIC) 254 entry += sizeof(ex); 255 else if (IS_ELF(*(Elf32_External_Ehdr *)&ex)) { 256 257 if (lseek(from, 0, SEEK_SET) < 0) 258 err(1, "lseek"); 259 n = read(from, &elf_header, sizeof (elf_header)); 260 if (n != sizeof (elf_header)) 261 err(1, "%s: reading ELF header", from_file); 262 header_count = ELFGET16(elf_header.e_phnum); 263 memory_needed = header_count * sizeof (Elf32_External_Phdr); 264 elf_segments = malloc(memory_needed); 265 if (elf_segments == NULL) 266 err(1, "malloc"); 267 if (lseek(from, ELFGET32(elf_header.e_phoff), SEEK_SET) < 0) 268 err(1, "lseek"); 269 n = read(from, elf_segments, memory_needed); 270 if (n != memory_needed) 271 err(1, "%s: reading ELF segments", from_file); 272 elf_load_image_segment = -1; 273 for (i = 0; i < header_count; i++) { 274 if (ELFGET32(elf_segments[i].p_filesz) && 275 ELFGET32(elf_segments[i].p_flags) & PF_X) { 276 if (elf_load_image_segment != -1) 277 errx(1, "%s: more than one ELF program " 278 "segment", from_file); 279 elf_load_image_segment = i; 280 } 281 } 282 if (elf_load_image_segment == -1) 283 errx(1, "%s: no suitable ELF program segment", 284 from_file); 285 entry = ELFGET32(elf_header.e_entry) + 286 ELFGET32(elf_segments[elf_load_image_segment].p_offset) - 287 ELFGET32(elf_segments[elf_load_image_segment].p_vaddr); 288 } else if (*(uint8_t *)&ex == 0x1f && ((uint8_t *)&ex)[1] == 0x8b) { 289 entry = 0; 290 } else 291 errx(1, "%s: bad magic number", from_file); 292 293 entry += sizeof(load); 294 lseek(to, sizeof(load), SEEK_CUR); 295 296 total = 0; 297 n = sizeof(buf) - sizeof(load); 298 /* copy the whole file */ 299 for (lseek(from, 0, SEEK_SET); ; n = sizeof(buf)) { 300 memset(buf, 0, sizeof(buf)); 301 if ((n = read(from, buf, n)) < 0) 302 err(1, "%s", from_file); 303 else if (n == 0) 304 break; 305 306 if (write(to, buf, n) != n) 307 err(1, "%s", to_file); 308 309 total += n; 310 check_sum = cksum(check_sum, (int *)buf, n); 311 } 312 313 /* load header */ 314 load.address = htobe32(loadpoint + sizeof(load)); 315 load.count = htobe32(4 + total); 316 check_sum = cksum(check_sum, (int *)&load, sizeof(load)); 317 318 if (verbose) 319 warnx("wrote %d bytes of file \'%s\'", total, from_file); 320 321 total += sizeof(load); 322 /* insert the header */ 323 lseek(to, -total, SEEK_CUR); 324 if (write(to, &load, sizeof(load)) != sizeof(load)) 325 err(1, "%s", to_file); 326 lseek(to, total - sizeof(load), SEEK_CUR); 327 328 memset(buf, 0, sizeof(buf)); 329 /* pad to int */ 330 n = sizeof(int) - total % sizeof(int); 331 if (total % sizeof(int)) { 332 if (write(to, buf, n) != n) 333 err(1, "%s", to_file); 334 else 335 total += n; 336 } 337 338 /* pad to the blocksize */ 339 n = sizeof(buf) - total % sizeof(buf); 340 341 if (n < sizeof(int)) { 342 n += sizeof(buf); 343 total += sizeof(buf); 344 } else 345 total += n; 346 347 /* TODO should pad here to the 65k boundary for tape boot */ 348 349 if (verbose) 350 warnx("checksum is 0x%08x", -check_sum); 351 352 check_sum = htobe32(-check_sum); 353 if (write(to, &check_sum, sizeof(int)) != sizeof(int)) 354 err(1, "%s", to_file); 355 356 n -= sizeof(int); 357 358 if (write(to, buf, n) != n) 359 err(1, "%s", to_file); 360 361 if (close(from) < 0) 362 err(1, "%s", from_file); 363 364 free(elf_segments); 365 return total; 366 } 367 368 int 369 cksum(int ck, int *p, int size) 370 { 371 /* we assume size is int-aligned */ 372 for (size = (size + sizeof(int) - 1) / sizeof(int); size--; p++ ) 373 ck += be32toh(*p); 374 375 return ck; 376 } 377 378 void __dead 379 usage(void) 380 { 381 fprintf(stderr, 382 "Usage: %s [-v] [-l <loadpoint>] [-t <timestamp>] prog1 {progN} outfile\n", 383 getprogname()); 384 exit(1); 385 } 386 387 char * 388 lifname(char *str) 389 { 390 static char lname[10] = "XXXXXXXXXX"; 391 char *cp; 392 int i; 393 394 cp = strrchr(str, '/'); 395 if (cp != NULL) { 396 str = cp + 1; 397 } 398 for (i = 0; i < 9; i++) { 399 if (islower(*str)) 400 lname[i] = toupper(*str); 401 else if (isalnum(*str) || *str == '_') 402 lname[i] = *str; 403 else 404 break; 405 str++; 406 } 407 for ( ; i < 10; i++) 408 lname[i] = ' '; 409 return(lname); 410 } 411 412 413 void 414 bcddate(char *file, char *toc) 415 { 416 struct stat statb; 417 struct tm *tm; 418 419 if (repro_epoch) 420 tm = gmtime(&repro_epoch); 421 else { 422 stat(file, &statb); 423 tm = localtime(&statb.st_ctime); 424 } 425 tm->tm_year %= 100; 426 *toc = (tm->tm_year / 10) << 4; 427 *toc++ |= tm->tm_year % 10; 428 *toc = ((tm->tm_mon+1) / 10) << 4; 429 *toc++ |= (tm->tm_mon+1) % 10; 430 *toc = (tm->tm_mday / 10) << 4; 431 *toc++ |= tm->tm_mday % 10; 432 *toc = (tm->tm_hour / 10) << 4; 433 *toc++ |= tm->tm_hour % 10; 434 *toc = (tm->tm_min / 10) << 4; 435 *toc++ |= tm->tm_min % 10; 436 *toc = (tm->tm_sec / 10) << 4; 437 *toc |= tm->tm_sec % 10; 438 } 439
Indexes created Sun Sep 28 16:09:52 GMT 2025