1 /* $OpenBSD: part.c,v 1.77 2017/03/26 00:22:49 sobrado Exp $ */ 2 3 /* 4 * Copyright (c) 1997 Tobias Weingartner 5 * 6 * Permission to use, copy, modify, and distribute this software for any 7 * purpose with or without fee is hereby granted, provided that the above 8 * copyright notice and this permission notice appear in all copies. 9 * 10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17 */ 18 19 #include <sys/types.h> 20 #include <sys/disklabel.h> 21 22 #include <err.h> 23 #include <stdio.h> 24 #include <stdlib.h> 25 #include <string.h> 26 #include <uuid.h> 27 28 #include "disk.h" 29 #include "misc.h" 30 #include "part.h" 31 32 int PRT_check_chs(struct prt *partn); 33 34 static const struct part_type { 35 int type; 36 char sname[14]; 37 char guid[37]; 38 } part_types[] = { 39 { 0x00, "unused ", "00000000-0000-0000-0000-000000000000" }, 40 { 0x01, "FAT12 ", "ebd0a0a2-b9e5-4433-87c0-68b6b72699c7" }, 41 { 0x02, "XENIX / "}, /* XENIX / filesystem */ 42 { 0x03, "XENIX /usr "}, /* XENIX /usr filesystem */ 43 { 0x04, "FAT16S ", "ebd0a0a2-b9e5-4433-87c0-68b6b72699c7" }, 44 { 0x05, "Extended DOS"}, /* Extended DOS */ 45 { 0x06, "FAT16B ", "ebd0a0a2-b9e5-4433-87c0-68b6b72699c7" }, 46 { 0x07, "NTFS ", "ebd0a0a2-b9e5-4433-87c0-68b6b72699c7" }, 47 { 0x08, "AIX fs "}, /* AIX filesystem */ 48 { 0x09, "AIX/Coherent"}, /* AIX boot partition or Coherent */ 49 { 0x0A, "OS/2 Bootmgr"}, /* OS/2 Boot Manager or OPUS */ 50 { 0x0B, "FAT32 ", "ebd0a0a2-b9e5-4433-87c0-68b6b72699c7" }, 51 { 0x0C, "FAT32L ", "ebd0a0a2-b9e5-4433-87c0-68b6b72699c7" }, 52 { 0x0E, "FAT16L ", "ebd0a0a2-b9e5-4433-87c0-68b6b72699c7" }, 53 { 0x0F, "Extended LBA"}, /* Extended DOS LBA-mapped */ 54 { 0x10, "OPUS "}, /* OPUS */ 55 { 0x11, "OS/2 hidden ", "ebd0a0a2-b9e5-4433-87c0-68b6b72699c7" }, 56 { 0x12, "Compaq Diag."}, /* Compaq Diagnostics */ 57 { 0x14, "OS/2 hidden ", "ebd0a0a2-b9e5-4433-87c0-68b6b72699c7" }, 58 { 0x16, "OS/2 hidden ", "ebd0a0a2-b9e5-4433-87c0-68b6b72699c7" }, 59 { 0x17, "OS/2 hidden ", "ebd0a0a2-b9e5-4433-87c0-68b6b72699c7" }, 60 { 0x18, "AST swap "}, /* AST Windows swapfile */ 61 { 0x19, "Willowtech "}, /* Willowtech Photon coS */ 62 { 0x1C, "ThinkPad Rec", "ebd0a0a2-b9e5-4433-87c0-68b6b72699c7" }, 63 { 0x24, "NEC DOS "}, /* NEC DOS */ 64 { 0x27, "Win Recovery", "de94bba4-06d1-4d40-a16a-bfd50179d6ac" }, 65 { 0x20, "Willowsoft "}, /* Willowsoft OFS1 */ 66 { 0x38, "Theos "}, /* Theos */ 67 { 0x39, "Plan 9 "}, /* Plan 9 */ 68 { 0x40, "VENIX 286 "}, /* VENIX 286 or LynxOS */ 69 { 0x41, "Lin/Minux DR"}, /* Linux/MINIX (sharing disk with DRDOS) or Personal RISC boot */ 70 { 0x42, "LinuxSwap DR", "af9b60a0-1431-4f62-bc68-3311714a69ad" }, 71 { 0x43, "Linux DR "}, /* Linux native (sharing disk with DRDOS) */ 72 { 0x4D, "QNX 4.2 Pri "}, /* QNX 4.2 Primary */ 73 { 0x4E, "QNX 4.2 Sec "}, /* QNX 4.2 Secondary */ 74 { 0x4F, "QNX 4.2 Ter "}, /* QNX 4.2 Tertiary */ 75 { 0x50, "DM "}, /* DM (disk manager) */ 76 { 0x51, "DM "}, /* DM6 Aux1 (or Novell) */ 77 { 0x52, "CP/M or SysV"}, /* CP/M or Microport SysV/AT */ 78 { 0x53, "DM "}, /* DM6 Aux3 */ 79 { 0x54, "Ontrack "}, /* Ontrack */ 80 { 0x55, "EZ-Drive "}, /* EZ-Drive (disk manager) */ 81 { 0x56, "Golden Bow "}, /* Golden Bow (disk manager) */ 82 { 0x5C, "Priam "}, /* Priam Edisk (disk manager) */ 83 { 0x61, "SpeedStor "}, /* SpeedStor */ 84 { 0x63, "ISC, HURD, *"}, /* ISC, System V/386, GNU HURD or Mach */ 85 { 0x64, "NetWare 2.xx"}, /* Novell NetWare 2.xx */ 86 { 0x65, "NetWare 3.xx"}, /* Novell NetWare 3.xx */ 87 { 0x66, "NetWare 386 "}, /* Novell 386 NetWare */ 88 { 0x67, "Novell "}, /* Novell */ 89 { 0x68, "Novell "}, /* Novell */ 90 { 0x69, "Novell "}, /* Novell */ 91 { 0x70, "DiskSecure "}, /* DiskSecure Multi-Boot */ 92 { 0x75, "PCIX "}, /* PCIX */ 93 { 0x7f, "ChromeKernel", "fe3a2a5d-4f32-41a7-b725-accc3285a309" }, 94 { 0x80, "Minix (old) "}, /* Minix 1.1 ... 1.4a */ 95 { 0x81, "Minix (new) "}, /* Minix 1.4b ... 1.5.10 */ 96 { 0x82, "Linux swap ", "0657fd6d-a4ab-43c4-84e5-0933c84b4f4f" }, 97 { 0x83, "Linux files*", "0fc63daf-8483-4772-8e79-3d69d8477de4" }, 98 { 0x84, "OS/2 hidden "}, /* OS/2 hidden C: drive */ 99 { 0x85, "Linux ext. "}, /* Linux extended */ 100 { 0x86, "NT FAT VS "}, /* NT FAT volume set */ 101 { 0x87, "NTFS VS "}, /* NTFS volume set or HPFS mirrored */ 102 { 0x8E, "Linux LVM ", "e6d6d379-f507-44c2-a23c-238f2a3df928" }, 103 { 0x93, "Amoeba FS "}, /* Amoeba filesystem */ 104 { 0x94, "Amoeba BBT "}, /* Amoeba bad block table */ 105 { 0x99, "Mylex "}, /* Mylex EISA SCSI */ 106 { 0x9F, "BSDI "}, /* BSDI BSD/OS */ 107 { 0xA0, "NotebookSave"}, /* Phoenix NoteBIOS save-to-disk */ 108 { 0xA5, "FreeBSD ", "516e7cb4-6ecf-11d6-8ff8-00022d09712b" }, 109 { 0xA6, "OpenBSD ", "824cc7a0-36a8-11e3-890a-952519ad3f61" }, 110 { 0xA7, "NEXTSTEP "}, /* NEXTSTEP */ 111 { 0xA8, "MacOS X ", "55465300-0000-11aa-aa11-00306543ecac" }, 112 { 0xA9, "NetBSD ", "516e7cb4-6ecf-11d6-8ff8-00022d09712b" }, 113 { 0xAB, "MacOS X boot", "426f6f74-0000-11aa-aa11-00306543ecac" }, 114 { 0xAF, "MacOS X HFS+", "48465300-0000-11aa-aa11-00306543ecac" }, 115 { 0xB7, "BSDI filesy*"}, /* BSDI BSD/386 filesystem */ 116 { 0xB8, "BSDI swap "}, /* BSDI BSD/386 swap */ 117 { 0xBF, "Solaris ", "6a85cf4d-1dd2-11b2-99a6-080020736631" }, 118 { 0xC0, "CTOS "}, /* CTOS */ 119 { 0xC1, "DRDOSs FAT12"}, /* DRDOS/sec (FAT-12) */ 120 { 0xC4, "DRDOSs < 32M"}, /* DRDOS/sec (FAT-16, < 32M) */ 121 { 0xC6, "DRDOSs >=32M"}, /* DRDOS/sec (FAT-16, >= 32M) */ 122 { 0xC7, "HPFS Disbled"}, /* Syrinx (Cyrnix?) or HPFS disabled */ 123 { 0xDB, "CPM/C.DOS/C*"}, /* Concurrent CPM or C.DOS or CTOS */ 124 { 0xDE, "Dell Maint "}, /* Dell maintenance partition */ 125 { 0xE1, "SpeedStor "}, /* DOS access or SpeedStor 12-bit FAT extended partition */ 126 { 0xE3, "SpeedStor "}, /* DOS R/O or SpeedStor or Storage Dimensions */ 127 { 0xE4, "SpeedStor "}, /* SpeedStor 16-bit FAT extended partition < 1024 cyl. */ 128 { 0xEB, "BeOS/i386 ", "42465331-3ba3-10f1-802a-4861696b7521" }, 129 { 0xEE, "EFI GPT "}, /* EFI Protective Partition */ 130 { 0xEF, "EFI Sys ", "c12a7328-f81f-11d2-ba4b-00a0c93ec93b" }, 131 { 0xF1, "SpeedStor "}, /* SpeedStor or Storage Dimensions */ 132 { 0xF2, "DOS 3.3+ Sec"}, /* DOS 3.3+ Secondary */ 133 { 0xF4, "SpeedStor "}, /* SpeedStor >1024 cyl. or LANstep or IBM PS/2 IML */ 134 { 0xFF, "Xenix BBT "}, /* Xenix Bad Block Table */ 135 }; 136 137 void 138 PRT_printall(void) 139 { 140 int i, idrows; 141 142 idrows = ((sizeof(part_types)/sizeof(struct part_type))+3)/4; 143 144 printf("Choose from the following Partition id values:\n"); 145 for (i = 0; i < idrows; i++) { 146 printf("%02X %s %02X %s %02X %s", 147 part_types[i].type, part_types[i].sname, 148 part_types[i+idrows].type, part_types[i+idrows].sname, 149 part_types[i+idrows*2].type, part_types[i+idrows*2].sname); 150 if ((i+idrows*3) < (sizeof(part_types)/sizeof(struct part_type))) { 151 printf(" %02X %s\n", 152 part_types[i+idrows*3].type, 153 part_types[i+idrows*3].sname); 154 } else 155 printf( "\n" ); 156 } 157 } 158 159 const char * 160 PRT_ascii_id(int id) 161 { 162 static char unknown[] = "<Unknown ID>"; 163 int i; 164 165 for (i = 0; i < sizeof(part_types)/sizeof(struct part_type); i++) { 166 if (part_types[i].type == id) 167 return (part_types[i].sname); 168 } 169 170 return (unknown); 171 } 172 173 void 174 PRT_parse(struct dos_partition *prt, off_t offset, off_t reloff, 175 struct prt *partn) 176 { 177 off_t off; 178 u_int32_t t; 179 180 partn->flag = prt->dp_flag; 181 partn->shead = prt->dp_shd; 182 183 partn->ssect = (prt->dp_ssect) & 0x3F; 184 partn->scyl = ((prt->dp_ssect << 2) & 0xFF00) | prt->dp_scyl; 185 186 partn->id = prt->dp_typ; 187 partn->ehead = prt->dp_ehd; 188 partn->esect = (prt->dp_esect) & 0x3F; 189 partn->ecyl = ((prt->dp_esect << 2) & 0xFF00) | prt->dp_ecyl; 190 191 if ((partn->id == DOSPTYP_EXTEND) || (partn->id == DOSPTYP_EXTENDL)) 192 off = reloff; 193 else 194 off = offset; 195 196 #if 0 /* XXX */ 197 partn->bs = letoh32(prt->dp_start) + off; 198 partn->ns = letoh32(prt->dp_size); 199 #else 200 memcpy(&t, &prt->dp_start, sizeof(u_int32_t)); 201 partn->bs = letoh32(t) + off; 202 memcpy(&t, &prt->dp_size, sizeof(u_int32_t)); 203 partn->ns = letoh32(t); 204 #endif 205 206 PRT_fix_CHS(partn); 207 } 208 209 int 210 PRT_check_chs(struct prt *partn) 211 { 212 if ( (partn->shead > 255) || 213 (partn->ssect >63) || 214 (partn->scyl > 1023) || 215 (partn->ehead >255) || 216 (partn->esect >63) || 217 (partn->ecyl > 1023) ) 218 { 219 return (0); 220 } 221 return (1); 222 } 223 224 void 225 PRT_make(struct prt *partn, off_t offset, off_t reloff, 226 struct dos_partition *prt) 227 { 228 off_t off; 229 u_int32_t ecsave, scsave; 230 u_int64_t t; 231 232 /* Save (and restore below) cylinder info we may fiddle with. */ 233 scsave = partn->scyl; 234 ecsave = partn->ecyl; 235 236 if ((partn->scyl > 1023) || (partn->ecyl > 1023)) { 237 partn->scyl = (partn->scyl > 1023)? 1023: partn->scyl; 238 partn->ecyl = (partn->ecyl > 1023)? 1023: partn->ecyl; 239 } 240 if ((partn->id == DOSPTYP_EXTEND) || (partn->id == DOSPTYP_EXTENDL)) 241 off = reloff; 242 else 243 off = offset; 244 245 if (PRT_check_chs(partn)) { 246 prt->dp_shd = partn->shead & 0xFF; 247 prt->dp_ssect = (partn->ssect & 0x3F) | 248 ((partn->scyl & 0x300) >> 2); 249 prt->dp_scyl = partn->scyl & 0xFF; 250 prt->dp_ehd = partn->ehead & 0xFF; 251 prt->dp_esect = (partn->esect & 0x3F) | 252 ((partn->ecyl & 0x300) >> 2); 253 prt->dp_ecyl = partn->ecyl & 0xFF; 254 } else { 255 memset(prt, 0xFF, sizeof(*prt)); 256 } 257 258 prt->dp_flag = partn->flag & 0xFF; 259 prt->dp_typ = partn->id & 0xFF; 260 261 t = htole64(partn->bs - off); 262 memcpy(&prt->dp_start, &t, sizeof(u_int32_t)); 263 t = htole64(partn->ns); 264 memcpy(&prt->dp_size, &t, sizeof(u_int32_t)); 265 266 partn->scyl = scsave; 267 partn->ecyl = ecsave; 268 } 269 270 void 271 PRT_print(int num, struct prt *partn, char *units) 272 { 273 const int secsize = unit_types[SECTORS].conversion; 274 double size; 275 int i; 276 277 i = unit_lookup(units); 278 279 if (partn == NULL) { 280 printf(" Starting Ending " 281 " LBA Info:\n"); 282 printf(" #: id C H S - C H S " 283 "[ start: size ]\n"); 284 printf("---------------------------------------" 285 "----------------------------------------\n"); 286 } else { 287 size = ((double)partn->ns * secsize) / unit_types[i].conversion; 288 printf("%c%1d: %.2X %6u %3u %3u - %6u %3u %3u " 289 "[%12llu:%12.0f%s] %s\n", 290 (partn->flag == DOSACTIVE)?'*':' ', 291 num, partn->id, 292 partn->scyl, partn->shead, partn->ssect, 293 partn->ecyl, partn->ehead, partn->esect, 294 partn->bs, size, 295 unit_types[i].abbr, 296 PRT_ascii_id(partn->id)); 297 } 298 } 299 300 void 301 PRT_fix_BN(struct prt *part, int pn) 302 { 303 u_int32_t spt, tpc, spc; 304 u_int32_t start = 0; 305 u_int32_t end = 0; 306 307 /* Zero out entry if not used */ 308 if (part->id == DOSPTYP_UNUSED) { 309 memset(part, 0, sizeof(*part)); 310 return; 311 } 312 313 /* Disk geometry. */ 314 spt = disk.sectors; 315 tpc = disk.heads; 316 spc = spt * tpc; 317 318 start += part->scyl * spc; 319 start += part->shead * spt; 320 start += part->ssect - 1; 321 322 end += part->ecyl * spc; 323 end += part->ehead * spt; 324 end += part->esect - 1; 325 326 /* XXX - Should handle this... */ 327 if (start > end) 328 warnx("Start of partition #%d after end!", pn); 329 330 part->bs = start; 331 part->ns = (end - start) + 1; 332 } 333 334 void 335 PRT_fix_CHS(struct prt *part) 336 { 337 u_int32_t spt, tpc, spc; 338 u_int32_t start, end, size; 339 u_int32_t cyl, head, sect; 340 341 /* Zero out entry if not used */ 342 if (part->id == DOSPTYP_UNUSED || part->ns == 0) { 343 memset(part, 0, sizeof(*part)); 344 return; 345 } 346 347 /* Disk geometry. */ 348 spt = disk.sectors; 349 tpc = disk.heads; 350 spc = spt * tpc; 351 352 start = part->bs; 353 size = part->ns; 354 end = (start + size) - 1; 355 356 /* Figure out starting CHS values */ 357 cyl = (start / spc); start -= (cyl * spc); 358 head = (start / spt); start -= (head * spt); 359 sect = (start + 1); 360 361 part->scyl = cyl; 362 part->shead = head; 363 part->ssect = sect; 364 365 /* Figure out ending CHS values */ 366 cyl = (end / spc); end -= (cyl * spc); 367 head = (end / spt); end -= (head * spt); 368 sect = (end + 1); 369 370 part->ecyl = cyl; 371 part->ehead = head; 372 part->esect = sect; 373 } 374 375 char * 376 PRT_uuid_to_typename(struct uuid *uuid) 377 { 378 static char partition_type[37]; /* Room for a GUID if needed. */ 379 char *uuidstr = NULL; 380 int i, entries, status; 381 382 memset(partition_type, 0, sizeof(partition_type)); 383 384 uuid_to_string(uuid, &uuidstr, &status); 385 if (status != uuid_s_ok) 386 goto done; 387 388 entries = sizeof(part_types) / sizeof(struct part_type); 389 390 for (i = 0; i < entries; i++) { 391 if (memcmp(part_types[i].guid, uuidstr, 392 sizeof(part_types[i].guid)) == 0) 393 break; 394 } 395 396 if (i < entries) 397 strlcpy(partition_type, part_types[i].sname, 398 sizeof(partition_type)); 399 else 400 strlcpy(partition_type, uuidstr, sizeof(partition_type)); 401 402 done: 403 free(uuidstr); 404 405 return (partition_type); 406 } 407 408 int 409 PRT_uuid_to_type(struct uuid *uuid) 410 { 411 char *uuidstr; 412 int entries, i, status, type; 413 414 type = 0; 415 416 uuid_to_string(uuid, &uuidstr, &status); 417 if (status != uuid_s_ok) 418 goto done; 419 420 entries = sizeof(part_types) / sizeof(struct part_type); 421 for (i = 0; i < entries; i++) { 422 if (memcmp(part_types[i].guid, uuidstr, 423 sizeof(part_types[i].guid)) == 0) { 424 type = part_types[i].type; 425 break; 426 } 427 } 428 429 done: 430 free(uuidstr); 431 return (type); 432 } 433 434 struct uuid * 435 PRT_type_to_uuid(int type) 436 { 437 static struct uuid guid; 438 int i, entries, status = uuid_s_ok; 439 440 memset(&guid, 0, sizeof(guid)); 441 442 entries = sizeof(part_types) / sizeof(struct part_type); 443 444 for (i = 0; i < entries; i++) { 445 if (part_types[i].type == type) 446 break; 447 } 448 if (i < entries) 449 uuid_from_string(part_types[i].guid, &guid, &status); 450 if (i == entries || status != uuid_s_ok) 451 uuid_from_string(part_types[0].guid, &guid, &status); 452 453 return (&guid); 454 } 455