1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * ptgen - partition table generator 4 * Copyright (C) 2006 by Felix Fietkau <nbd@nbd.name> 5 * 6 * uses parts of afdisk 7 * Copyright (C) 2002 by David Roetzel <david@roetzel.de> 8 * 9 * UUID/GUID definition stolen from kernel/include/uapi/linux/uuid.h 10 * Copyright (C) 2010, Intel Corp. Huang Ying <ying.huang@intel.com> 11 */ 12 13 #include <byteswap.h> 14 #include <sys/types.h> 15 #include <sys/stat.h> 16 #include <string.h> 17 #include <unistd.h> 18 #include <stdlib.h> 19 #include <stdio.h> 20 #include <stdint.h> 21 #include <stdbool.h> 22 #include <ctype.h> 23 #include <inttypes.h> 24 #include <fcntl.h> 25 #include <stdint.h> 26 #include "cyg_crc.h" 27 28 #if __BYTE_ORDER == __BIG_ENDIAN 29 #define cpu_to_le16(x) bswap_16(x) 30 #define cpu_to_le32(x) bswap_32(x) 31 #define cpu_to_le64(x) bswap_64(x) 32 #elif __BYTE_ORDER == __LITTLE_ENDIAN 33 #define cpu_to_le16(x) (x) 34 #define cpu_to_le32(x) (x) 35 #define cpu_to_le64(x) (x) 36 #else 37 #error unknown endianness! 38 #endif 39 40 #define swap(a, b) \ 41 do { typeof(a) __tmp = (a); (a) = (b); (b) = __tmp; } while (0) 42 43 #define BIT(_x) (1UL << (_x)) 44 45 typedef struct { 46 uint8_t b[16]; 47 } guid_t; 48 49 #define GUID_INIT(a, b, c, d0, d1, d2, d3, d4, d5, d6, d7) \ 50 ((guid_t) \ 51 {{ (a) & 0xff, ((a) >> 8) & 0xff, ((a) >> 16) & 0xff, ((a) >> 24) & 0xff, \ 52 (b) & 0xff, ((b) >> 8) & 0xff, \ 53 (c) & 0xff, ((c) >> 8) & 0xff, \ 54 (d0), (d1), (d2), (d3), (d4), (d5), (d6), (d7) }}) 55 56 #define GUID_STRING_LENGTH 36 57 58 #define GPT_SIGNATURE 0x5452415020494645ULL 59 #define GPT_REVISION 0x00010000 60 61 #define GUID_PARTITION_SYSTEM \ 62 GUID_INIT( 0xC12A7328, 0xF81F, 0x11d2, \ 63 0xBA, 0x4B, 0x00, 0xA0, 0xC9, 0x3E, 0xC9, 0x3B) 64 65 #define GUID_PARTITION_BASIC_DATA \ 66 GUID_INIT( 0xEBD0A0A2, 0xB9E5, 0x4433, \ 67 0x87, 0xC0, 0x68, 0xB6, 0xB7, 0x26, 0x99, 0xC7) 68 69 #define GUID_PARTITION_BIOS_BOOT \ 70 GUID_INIT( 0x21686148, 0x6449, 0x6E6F, \ 71 0x74, 0x4E, 0x65, 0x65, 0x64, 0x45, 0x46, 0x49) 72 73 #define GUID_PARTITION_CHROME_OS_KERNEL \ 74 GUID_INIT( 0xFE3A2A5D, 0x4F32, 0x41A7, \ 75 0xB7, 0x25, 0xAC, 0xCC, 0x32, 0x85, 0xA3, 0x09) 76 77 #define GUID_PARTITION_LINUX_FIT_GUID \ 78 GUID_INIT( 0xcae9be83, 0xb15f, 0x49cc, \ 79 0x86, 0x3f, 0x08, 0x1b, 0x74, 0x4a, 0x2d, 0x93) 80 81 #define GUID_PARTITION_LINUX_FS_GUID \ 82 GUID_INIT( 0x0fc63daf, 0x8483, 0x4772, \ 83 0x8e, 0x79, 0x3d, 0x69, 0xd8, 0x47, 0x7d, 0xe4) 84 85 #define GPT_HEADER_SIZE 92 86 #define GPT_ENTRY_SIZE 128 87 #define GPT_ENTRY_MAX 128 88 #define GPT_ENTRY_NAME_SIZE 72 89 #define GPT_SIZE GPT_ENTRY_SIZE * GPT_ENTRY_MAX / DISK_SECTOR_SIZE 90 91 #define GPT_ATTR_PLAT_REQUIRED BIT(0) 92 #define GPT_ATTR_EFI_IGNORE BIT(1) 93 #define GPT_ATTR_LEGACY_BOOT BIT(2) 94 95 #define GPT_HEADER_SECTOR 1 96 #define GPT_FIRST_ENTRY_SECTOR 2 97 98 #define MBR_ENTRY_MAX 4 99 #define MBR_DISK_SIGNATURE_OFFSET 440 100 #define MBR_PARTITION_ENTRY_OFFSET 446 101 #define MBR_BOOT_SIGNATURE_OFFSET 510 102 103 #define DISK_SECTOR_SIZE 512 104 105 /* Partition table entry */ 106 struct pte { 107 uint8_t active; 108 uint8_t chs_start[3]; 109 uint8_t type; 110 uint8_t chs_end[3]; 111 uint32_t start; 112 uint32_t length; 113 }; 114 115 struct partinfo { 116 unsigned long actual_start; 117 unsigned long start; 118 unsigned long size; 119 int type; 120 int hybrid; 121 char *name; 122 short int required; 123 bool has_guid; 124 guid_t guid; 125 uint64_t gattr; /* GPT partition attributes */ 126 }; 127 128 /* GPT Partition table header */ 129 struct gpth { 130 uint64_t signature; 131 uint32_t revision; 132 uint32_t size; 133 uint32_t crc32; 134 uint32_t reserved; 135 uint64_t self; 136 uint64_t alternate; 137 uint64_t first_usable; 138 uint64_t last_usable; 139 guid_t disk_guid; 140 uint64_t first_entry; 141 uint32_t entry_num; 142 uint32_t entry_size; 143 uint32_t entry_crc32; 144 } __attribute__((packed)); 145 146 /* GPT Partition table entry */ 147 struct gpte { 148 guid_t type; 149 guid_t guid; 150 uint64_t start; 151 uint64_t end; 152 uint64_t attr; 153 char name[GPT_ENTRY_NAME_SIZE]; 154 } __attribute__((packed)); 155 156 157 int verbose = 0; 158 int active = 1; 159 int heads = -1; 160 int sectors = -1; 161 int kb_align = 0; 162 bool ignore_null_sized_partition = false; 163 bool use_guid_partition_table = false; 164 struct partinfo parts[GPT_ENTRY_MAX]; 165 char *filename = NULL; 166 167 168 /* 169 * parse the size argument, which is either 170 * a simple number (K assumed) or 171 * K, M or G 172 * 173 * returns the size in KByte 174 */ 175 static long to_kbytes(const char *string) 176 { 177 int exp = 0; 178 long result; 179 char *end; 180 181 result = strtoul(string, &end, 0); 182 switch (tolower(*end)) { 183 case 'k' : 184 case '\0' : exp = 0; break; 185 case 'm' : exp = 1; break; 186 case 'g' : exp = 2; break; 187 default: return 0; 188 } 189 190 if (*end) 191 end++; 192 193 if (*end) { 194 fputs("garbage after end of number\n", stderr); 195 return 0; 196 } 197 198 /* result: number + 1024^(exp) */ 199 if (exp == 0) 200 return result; 201 return result * (2 << ((10 * exp) - 1)); 202 } 203 204 /* convert the sector number into a CHS value for the partition table */ 205 static void to_chs(long sect, unsigned char chs[3]) 206 { 207 int c,h,s; 208 209 s = (sect % sectors) + 1; 210 sect = sect / sectors; 211 h = sect % heads; 212 sect = sect / heads; 213 c = sect; 214 215 chs[0] = h; 216 chs[1] = s | ((c >> 2) & 0xC0); 217 chs[2] = c & 0xFF; 218 219 return; 220 } 221 222 /* round the sector number up to the next cylinder */ 223 static inline unsigned long round_to_cyl(long sect) 224 { 225 int cyl_size = heads * sectors; 226 227 return sect + cyl_size - (sect % cyl_size); 228 } 229 230 /* round the sector number up to the kb_align boundary */ 231 static inline unsigned long round_to_kb(long sect) { 232 return ((sect - 1) / kb_align + 1) * kb_align; 233 } 234 235 /* Compute a CRC for guid partition table */ 236 static inline unsigned long gpt_crc32(void *buf, unsigned long len) 237 { 238 return cyg_crc32_accumulate(~0L, buf, len) ^ ~0L; 239 } 240 241 /* Parse a guid string to guid_t struct */ 242 static inline int guid_parse(char *buf, guid_t *guid) 243 { 244 char b[4] = {0}; 245 char *p = buf; 246 unsigned i = 0; 247 if (strnlen(buf, GUID_STRING_LENGTH) != GUID_STRING_LENGTH) 248 return -1; 249 for (i = 0; i < sizeof(guid_t); i++) { 250 if (*p == '-') 251 p++; 252 if (*p == '\0') 253 return -1; 254 memcpy(b, p, 2); 255 guid->b[i] = strtol(b, 0, 16); 256 p += 2; 257 } 258 swap(guid->b[0], guid->b[3]); 259 swap(guid->b[1], guid->b[2]); 260 swap(guid->b[4], guid->b[5]); 261 swap(guid->b[6], guid->b[7]); 262 return 0; 263 } 264 265 /* 266 * Map GPT partition types to partition GUIDs. 267 * NB: not all GPT partition types have an equivalent MBR type. 268 */ 269 static inline bool parse_gpt_parttype(const char *type, struct partinfo *part) 270 { 271 if (!strcmp(type, "cros_kernel")) { 272 part->has_guid = true; 273 part->guid = GUID_PARTITION_CHROME_OS_KERNEL; 274 /* Default attributes: bootable kernel. */ 275 part->gattr = (1ULL << 48) | /* priority=1 */ 276 (1ULL << 56); /* success=1 */ 277 return true; 278 } 279 return false; 280 } 281 282 /* init an utf-16 string from utf-8 string */ 283 static inline void init_utf16(char *str, uint16_t *buf, unsigned bufsize) 284 { 285 unsigned i, n = 0; 286 for (i = 0; i < bufsize; i++) { 287 if (str[n] == 0x00) { 288 buf[i] = 0x00; 289 return ; 290 } else if ((str[n] & 0x80) == 0x00) {//0xxxxxxx 291 buf[i] = cpu_to_le16(str[n++]); 292 } else if ((str[n] & 0xE0) == 0xC0) {//110xxxxx 293 buf[i] = cpu_to_le16((str[n] & 0x1F) << 6 | (str[n + 1] & 0x3F)); 294 n += 2; 295 } else if ((str[n] & 0xF0) == 0xE0) {//1110xxxx 296 buf[i] = cpu_to_le16((str[n] & 0x0F) << 12 | (str[n + 1] & 0x3F) << 6 | (str[n + 2] & 0x3F)); 297 n += 3; 298 } else { 299 buf[i] = cpu_to_le16('?'); 300 n++; 301 } 302 } 303 } 304 305 /* check the partition sizes and write the partition table */ 306 static int gen_ptable(uint32_t signature, int nr) 307 { 308 struct pte pte[MBR_ENTRY_MAX]; 309 unsigned long start, len, sect = 0; 310 int i, fd, ret = -1; 311 312 memset(pte, 0, sizeof(struct pte) * MBR_ENTRY_MAX); 313 for (i = 0; i < nr; i++) { 314 if (!parts[i].size) { 315 if (ignore_null_sized_partition) 316 continue; 317 fprintf(stderr, "Invalid size in partition %d!\n", i); 318 return ret; 319 } 320 321 pte[i].active = ((i + 1) == active) ? 0x80 : 0; 322 pte[i].type = parts[i].type; 323 324 start = sect + sectors; 325 if (parts[i].start != 0) { 326 if (parts[i].start * 2 < start) { 327 fprintf(stderr, "Invalid start %ld for partition %d!\n", 328 parts[i].start, i); 329 return ret; 330 } 331 start = parts[i].start * 2; 332 } else if (kb_align != 0) { 333 start = round_to_kb(start); 334 } 335 pte[i].start = cpu_to_le32(start); 336 337 sect = start + parts[i].size * 2; 338 if (kb_align == 0) 339 sect = round_to_cyl(sect); 340 pte[i].length = cpu_to_le32(len = sect - start); 341 342 to_chs(start, pte[i].chs_start); 343 to_chs(start + len - 1, pte[i].chs_end); 344 345 if (verbose) 346 fprintf(stderr, "Partition %d: start=%ld, end=%ld, size=%ld\n", 347 i, 348 (long)start * DISK_SECTOR_SIZE, 349 (long)(start + len) * DISK_SECTOR_SIZE, 350 (long)len * DISK_SECTOR_SIZE); 351 printf("%ld\n", (long)start * DISK_SECTOR_SIZE); 352 printf("%ld\n", (long)len * DISK_SECTOR_SIZE); 353 } 354 355 if ((fd = open(filename, O_WRONLY|O_CREAT|O_TRUNC, 0644)) < 0) { 356 fprintf(stderr, "Can't open output file '%s'\n",filename); 357 return ret; 358 } 359 360 lseek(fd, MBR_DISK_SIGNATURE_OFFSET, SEEK_SET); 361 if (write(fd, &signature, sizeof(signature)) != sizeof(signature)) { 362 fputs("write failed.\n", stderr); 363 goto fail; 364 } 365 366 lseek(fd, MBR_PARTITION_ENTRY_OFFSET, SEEK_SET); 367 if (write(fd, pte, sizeof(struct pte) * MBR_ENTRY_MAX) != sizeof(struct pte) * MBR_ENTRY_MAX) { 368 fputs("write failed.\n", stderr); 369 goto fail; 370 } 371 lseek(fd, MBR_BOOT_SIGNATURE_OFFSET, SEEK_SET); 372 if (write(fd, "\x55\xaa", 2) != 2) { 373 fputs("write failed.\n", stderr); 374 goto fail; 375 } 376 377 ret = 0; 378 fail: 379 close(fd); 380 return ret; 381 } 382 383 /* check the partition sizes and write the guid partition table */ 384 static int gen_gptable(uint32_t signature, guid_t guid, unsigned nr) 385 { 386 struct pte pte[MBR_ENTRY_MAX]; 387 struct gpth gpth = { 388 .signature = cpu_to_le64(GPT_SIGNATURE), 389 .revision = cpu_to_le32(GPT_REVISION), 390 .size = cpu_to_le32(GPT_HEADER_SIZE), 391 .self = cpu_to_le64(GPT_HEADER_SECTOR), 392 .first_usable = cpu_to_le64(GPT_FIRST_ENTRY_SECTOR + GPT_ENTRY_SIZE * GPT_ENTRY_MAX / DISK_SECTOR_SIZE), 393 .first_entry = cpu_to_le64(GPT_FIRST_ENTRY_SECTOR), 394 .disk_guid = guid, 395 .entry_num = cpu_to_le32(GPT_ENTRY_MAX), 396 .entry_size = cpu_to_le32(GPT_ENTRY_SIZE), 397 }; 398 struct gpte gpte[GPT_ENTRY_MAX]; 399 uint64_t start, end; 400 uint64_t sect = GPT_SIZE + GPT_FIRST_ENTRY_SECTOR; 401 int fd, ret = -1; 402 unsigned i, pmbr = 1; 403 404 memset(pte, 0, sizeof(struct pte) * MBR_ENTRY_MAX); 405 memset(gpte, 0, GPT_ENTRY_SIZE * GPT_ENTRY_MAX); 406 for (i = 0; i < nr; i++) { 407 if (!parts[i].size) { 408 if (ignore_null_sized_partition) 409 continue; 410 fprintf(stderr, "Invalid size in partition %d!\n", i); 411 return ret; 412 } 413 start = sect; 414 if (parts[i].start != 0) { 415 if (parts[i].start * 2 < start) { 416 fprintf(stderr, "Invalid start %ld for partition %d!\n", 417 parts[i].start, i); 418 return ret; 419 } 420 start = parts[i].start * 2; 421 } else if (kb_align != 0) { 422 start = round_to_kb(start); 423 } 424 parts[i].actual_start = start; 425 gpte[i].start = cpu_to_le64(start); 426 427 sect = start + parts[i].size * 2; 428 gpte[i].end = cpu_to_le64(sect -1); 429 gpte[i].guid = guid; 430 gpte[i].guid.b[sizeof(guid_t) -1] += i + 1; 431 gpte[i].type = parts[i].guid; 432 433 if (parts[i].hybrid && pmbr < MBR_ENTRY_MAX) { 434 pte[pmbr].active = ((i + 1) == active) ? 0x80 : 0; 435 pte[pmbr].type = parts[i].type; 436 pte[pmbr].start = cpu_to_le32(start); 437 pte[pmbr].length = cpu_to_le32(sect - start); 438 to_chs(start, pte[1].chs_start); 439 to_chs(sect - 1, pte[1].chs_end); 440 pmbr++; 441 } 442 gpte[i].attr = parts[i].gattr; 443 444 if (parts[i].name) 445 init_utf16(parts[i].name, (uint16_t *)gpte[i].name, GPT_ENTRY_NAME_SIZE / sizeof(uint16_t)); 446 447 if ((i + 1) == (unsigned)active) 448 gpte[i].attr |= GPT_ATTR_LEGACY_BOOT; 449 450 if (parts[i].required) 451 gpte[i].attr |= GPT_ATTR_PLAT_REQUIRED; 452 453 if (verbose) 454 fprintf(stderr, "Partition %d: start=%" PRIu64 ", end=%" PRIu64 ", size=%" PRIu64 "\n", 455 i, 456 start * DISK_SECTOR_SIZE, sect * DISK_SECTOR_SIZE, 457 (sect - start) * DISK_SECTOR_SIZE); 458 printf("%" PRIu64 "\n", start * DISK_SECTOR_SIZE); 459 printf("%" PRIu64 "\n", (sect - start) * DISK_SECTOR_SIZE); 460 } 461 462 if (parts[0].actual_start > GPT_FIRST_ENTRY_SECTOR + GPT_SIZE) { 463 gpte[GPT_ENTRY_MAX - 1].start = cpu_to_le64(GPT_FIRST_ENTRY_SECTOR + GPT_SIZE); 464 gpte[GPT_ENTRY_MAX - 1].end = cpu_to_le64(parts[0].actual_start - 1); 465 gpte[GPT_ENTRY_MAX - 1].type = GUID_PARTITION_BIOS_BOOT; 466 gpte[GPT_ENTRY_MAX - 1].guid = guid; 467 gpte[GPT_ENTRY_MAX - 1].guid.b[sizeof(guid_t) -1] += GPT_ENTRY_MAX; 468 } 469 470 end = sect + GPT_SIZE; 471 472 pte[0].type = 0xEE; 473 pte[0].start = cpu_to_le32(GPT_HEADER_SECTOR); 474 pte[0].length = cpu_to_le32(end - GPT_HEADER_SECTOR); 475 to_chs(GPT_HEADER_SECTOR, pte[0].chs_start); 476 to_chs(end, pte[0].chs_end); 477 478 gpth.last_usable = cpu_to_le64(end - GPT_SIZE - 1); 479 gpth.alternate = cpu_to_le64(end); 480 gpth.entry_crc32 = cpu_to_le32(gpt_crc32(gpte, GPT_ENTRY_SIZE * GPT_ENTRY_MAX)); 481 gpth.crc32 = cpu_to_le32(gpt_crc32((char *)&gpth, GPT_HEADER_SIZE)); 482 483 if ((fd = open(filename, O_WRONLY|O_CREAT|O_TRUNC, 0644)) < 0) { 484 fprintf(stderr, "Can't open output file '%s'\n",filename); 485 return ret; 486 } 487 488 lseek(fd, MBR_DISK_SIGNATURE_OFFSET, SEEK_SET); 489 if (write(fd, &signature, sizeof(signature)) != sizeof(signature)) { 490 fputs("write failed.\n", stderr); 491 goto fail; 492 } 493 494 lseek(fd, MBR_PARTITION_ENTRY_OFFSET, SEEK_SET); 495 if (write(fd, pte, sizeof(struct pte) * MBR_ENTRY_MAX) != sizeof(struct pte) * MBR_ENTRY_MAX) { 496 fputs("write failed.\n", stderr); 497 goto fail; 498 } 499 500 lseek(fd, MBR_BOOT_SIGNATURE_OFFSET, SEEK_SET); 501 if (write(fd, "\x55\xaa", 2) != 2) { 502 fputs("write failed.\n", stderr); 503 goto fail; 504 } 505 506 if (write(fd, &gpth, GPT_HEADER_SIZE) != GPT_HEADER_SIZE) { 507 fputs("write failed.\n", stderr); 508 goto fail; 509 } 510 511 lseek(fd, GPT_FIRST_ENTRY_SECTOR * DISK_SECTOR_SIZE, SEEK_SET); 512 if (write(fd, &gpte, GPT_ENTRY_SIZE * GPT_ENTRY_MAX) != GPT_ENTRY_SIZE * GPT_ENTRY_MAX) { 513 fputs("write failed.\n", stderr); 514 goto fail; 515 } 516 517 #ifdef WANT_ALTERNATE_PTABLE 518 /* The alternate partition table (We omit it by default) */ 519 swap(gpth.self, gpth.alternate); 520 gpth.first_entry = cpu_to_le64(end - GPT_ENTRY_SIZE * GPT_ENTRY_MAX / DISK_SECTOR_SIZE), 521 gpth.crc32 = 0; 522 gpth.crc32 = cpu_to_le32(gpt_crc32(&gpth, GPT_HEADER_SIZE)); 523 524 lseek(fd, end * DISK_SECTOR_SIZE - GPT_ENTRY_SIZE * GPT_ENTRY_MAX, SEEK_SET); 525 if (write(fd, &gpte, GPT_ENTRY_SIZE * GPT_ENTRY_MAX) != GPT_ENTRY_SIZE * GPT_ENTRY_MAX) { 526 fputs("write failed.\n", stderr); 527 goto fail; 528 } 529 530 lseek(fd, end * DISK_SECTOR_SIZE, SEEK_SET); 531 if (write(fd, &gpth, GPT_HEADER_SIZE) != GPT_HEADER_SIZE) { 532 fputs("write failed.\n", stderr); 533 goto fail; 534 } 535 lseek(fd, (end + 1) * DISK_SECTOR_SIZE -1, SEEK_SET); 536 if (write(fd, "\x00", 1) != 1) { 537 fputs("write failed.\n", stderr); 538 goto fail; 539 } 540 #endif 541 542 ret = 0; 543 fail: 544 close(fd); 545 return ret; 546 } 547 548 static void usage(char *prog) 549 { 550 fprintf(stderr, "Usage: %s [-v] [-n] [-g] -h <heads> -s <sectors> -o <outputfile>\n" 551 " [-a 0..4] [-l <align kB>] [-G <guid>]\n" 552 " [[-t <type> | -T <GPT part type>] [-r] [-N <name>] -p <size>[@<start>]...] \n", prog); 553 exit(EXIT_FAILURE); 554 } 555 556 static guid_t type_to_guid_and_name(unsigned char type, char **name) 557 { 558 guid_t guid = GUID_PARTITION_BASIC_DATA; 559 560 switch (type) { 561 case 0xef: 562 if(*name == NULL) 563 *name = "EFI System Partition"; 564 guid = GUID_PARTITION_SYSTEM; 565 break; 566 case 0x83: 567 guid = GUID_PARTITION_LINUX_FS_GUID; 568 break; 569 case 0x2e: 570 guid = GUID_PARTITION_LINUX_FIT_GUID; 571 break; 572 } 573 574 return guid; 575 } 576 577 int main (int argc, char **argv) 578 { 579 unsigned char type = 0x83; 580 char *p; 581 int ch; 582 int part = 0; 583 char *name = NULL; 584 unsigned short int hybrid = 0, required = 0; 585 uint32_t signature = 0x5452574F; /* 'OWRT' */ 586 guid_t guid = GUID_INIT( signature, 0x2211, 0x4433, \ 587 0x55, 0x66, 0x77, 0x88, 0x99, 0xAA, 0xBB, 0x00); 588 589 while ((ch = getopt(argc, argv, "h:s:p:a:t:T:o:vnHN:gl:rS:G:")) != -1) { 590 switch (ch) { 591 case 'o': 592 filename = optarg; 593 break; 594 case 'v': 595 verbose++; 596 break; 597 case 'n': 598 ignore_null_sized_partition = true; 599 break; 600 case 'g': 601 use_guid_partition_table = 1; 602 break; 603 case 'H': 604 hybrid = 1; 605 break; 606 case 'h': 607 heads = (int)strtoul(optarg, NULL, 0); 608 break; 609 case 's': 610 sectors = (int)strtoul(optarg, NULL, 0); 611 break; 612 case 'p': 613 if (part > GPT_ENTRY_MAX - 1 || (!use_guid_partition_table && part > 3)) { 614 fputs("Too many partitions\n", stderr); 615 exit(EXIT_FAILURE); 616 } 617 p = strchr(optarg, '@'); 618 if (p) { 619 *(p++) = 0; 620 parts[part].start = to_kbytes(p); 621 } 622 if (!parts[part].has_guid) 623 parts[part].guid = type_to_guid_and_name(type, &name); 624 625 parts[part].size = to_kbytes(optarg); 626 parts[part].required = required; 627 parts[part].name = name; 628 parts[part].hybrid = hybrid; 629 fprintf(stderr, "part %ld %ld\n", parts[part].start, parts[part].size); 630 parts[part++].type = type; 631 /* 632 * reset 'name','required' and 'hybrid' 633 * 'type' is deliberately inherited from the previous delcaration 634 */ 635 name = NULL; 636 required = 0; 637 hybrid = 0; 638 break; 639 case 'N': 640 name = optarg; 641 break; 642 case 'r': 643 required = 1; 644 break; 645 case 't': 646 type = (char)strtoul(optarg, NULL, 16); 647 break; 648 case 'a': 649 active = (int)strtoul(optarg, NULL, 0); 650 if ((active < 0) || (active > 4)) 651 active = 0; 652 break; 653 case 'l': 654 kb_align = (int)strtoul(optarg, NULL, 0) * 2; 655 break; 656 case 'S': 657 signature = strtoul(optarg, NULL, 0); 658 break; 659 case 'T': 660 if (!parse_gpt_parttype(optarg, &parts[part])) { 661 fprintf(stderr, 662 "Invalid GPT partition type \"%s\"\n", 663 optarg); 664 exit(EXIT_FAILURE); 665 } 666 break; 667 case 'G': 668 if (guid_parse(optarg, &guid)) { 669 fputs("Invalid guid string\n", stderr); 670 exit(EXIT_FAILURE); 671 } 672 break; 673 case '?': 674 default: 675 usage(argv[0]); 676 } 677 } 678 argc -= optind; 679 if (argc || (!use_guid_partition_table && ((heads <= 0) || (sectors <= 0))) || !filename) 680 usage(argv[0]); 681 682 if (use_guid_partition_table) { 683 heads = 254; 684 sectors = 63; 685 return gen_gptable(signature, guid, part) ? EXIT_FAILURE : EXIT_SUCCESS; 686 } 687 688 return gen_ptable(signature, part) ? EXIT_FAILURE : EXIT_SUCCESS; 689 } 690
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