| 1 | /*␊ |
| 2 | * Copyright (c) 1999-2003 Apple Computer, Inc. All rights reserved.␊ |
| 3 | *␊ |
| 4 | * @APPLE_LICENSE_HEADER_START@␊ |
| 5 | * ␊ |
| 6 | * Portions Copyright (c) 1999-2003 Apple Computer, Inc. All Rights␊ |
| 7 | * Reserved. This file contains Original Code and/or Modifications of␊ |
| 8 | * Original Code as defined in and that are subject to the Apple Public␊ |
| 9 | * Source License Version 2.0 (the "License"). You may not use this file␊ |
| 10 | * except in compliance with the License. Please obtain a copy of the␊ |
| 11 | * License at http://www.apple.com/publicsource and read it before using␊ |
| 12 | * this file.␊ |
| 13 | * ␊ |
| 14 | * The Original Code and all software distributed under the License are␊ |
| 15 | * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER␊ |
| 16 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,␊ |
| 17 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,␊ |
| 18 | * FITNESS FOR A PARTICULAR PURPOSE OR NON- INFRINGEMENT. Please see the␊ |
| 19 | * License for the specific language governing rights and limitations␊ |
| 20 | * under the License.␊ |
| 21 | * ␊ |
| 22 | * @APPLE_LICENSE_HEADER_END@␊ |
| 23 | */␊ |
| 24 | /* ␊ |
| 25 | * Mach Operating System␊ |
| 26 | * Copyright (c) 1990 Carnegie-Mellon University␊ |
| 27 | * Copyright (c) 1989 Carnegie-Mellon University␊ |
| 28 | * All rights reserved. The CMU software License Agreement specifies␊ |
| 29 | * the terms and conditions for use and redistribution.␊ |
| 30 | */␊ |
| 31 | ␊ |
| 32 | /*␊ |
| 33 | * INTEL CORPORATION PROPRIETARY INFORMATION␊ |
| 34 | *␊ |
| 35 | * This software is supplied under the terms of a license agreement or ␊ |
| 36 | * nondisclosure agreement with Intel Corporation and may not be copied ␊ |
| 37 | * nor disclosed except in accordance with the terms of that agreement.␊ |
| 38 | *␊ |
| 39 | * Copyright 1988, 1989 Intel Corporation␊ |
| 40 | */␊ |
| 41 | ␊ |
| 42 | /*␊ |
| 43 | * Copyright 1993 NeXT Computer, Inc.␊ |
| 44 | * All rights reserved.␊ |
| 45 | */␊ |
| 46 | ␊ |
| 47 | /* Copyright 2007 VMware Inc.␊ |
| 48 | "Preboot" ramdisk support added by David Elliott␊ |
| 49 | GPT support added by David Elliott. Based on IOGUIDPartitionScheme.cpp.␊ |
| 50 | */␊ |
| 51 | ␊ |
| 52 | // Allow UFS_SUPPORT to be overridden with preprocessor option.␊ |
| 53 | #ifndef UFS_SUPPORT␊ |
| 54 | // zef: Disabled UFS support␊ |
| 55 | #define UFS_SUPPORT 0␊ |
| 56 | #endif␊ |
| 57 | ␊ |
| 58 | //#include "libsaio.h"␊ |
| 59 | #include "memory.h"␊ |
| 60 | //---␊ |
| 61 | #include "boot.h"␊ |
| 62 | #include "bootstruct.h"␊ |
| 63 | #include "fdisk.h"␊ |
| 64 | #if UFS_SUPPORT␊ |
| 65 | #include "ufs.h"␊ |
| 66 | #endif␊ |
| 67 | #include "hfs.h"␊ |
| 68 | #include "ntfs.h"␊ |
| 69 | #include "msdos.h"␊ |
| 70 | #include "ext2fs.h"␊ |
| 71 | ␊ |
| 72 | #include "xml.h"␊ |
| 73 | #include "disk.h"␊ |
| 74 | ␊ |
| 75 | #include <limits.h>␊ |
| 76 | #include <IOKit/storage/IOApplePartitionScheme.h>␊ |
| 77 | #include <IOKit/storage/IOGUIDPartitionScheme.h>␊ |
| 78 | typedef struct gpt_hdr gpt_hdr;␊ |
| 79 | typedef struct gpt_ent gpt_ent;␊ |
| 80 | ␊ |
| 81 | // For EFI_GUID␊ |
| 82 | #include "efi.h"␊ |
| 83 | #include "efi_tables.h"␊ |
| 84 | ␊ |
| 85 | #define PROBEFS_SIZE BPS * 4 /* buffer size for filesystem probe */␊ |
| 86 | #define CD_BPS 2048 /* CD-ROM block size */␊ |
| 87 | #define N_CACHE_SECS (BIOS_LEN / BPS) /* Must be a multiple of 4 for CD-ROMs */␊ |
| 88 | #define UFS_FRONT_PORCH 0␊ |
| 89 | #define kAPMSector 2 /* Sector number of Apple partition map */␊ |
| 90 | #define kAPMCDSector 8 /* Translated sector of Apple partition map on a CD */␊ |
| 91 | ␊ |
| 92 | /*␊ |
| 93 | * IORound and IOTrunc convenience functions, in the spirit␊ |
| 94 | * of vm's round_page() and trunc_page().␊ |
| 95 | */␊ |
| 96 | #define IORound(value,multiple) \␊ |
| 97 | ((((value) + (multiple) - 1) / (multiple)) * (multiple))␊ |
| 98 | ␊ |
| 99 | #define IOTrunc(value,multiple) \␊ |
| 100 | (((value) / (multiple)) * (multiple));␊ |
| 101 | ␊ |
| 102 | /*␊ |
| 103 | * trackbuf points to the start of the track cache. Biosread()␊ |
| 104 | * will store the sectors read from disk to this memory area.␊ |
| 105 | *␊ |
| 106 | * biosbuf points to a sector within the track cache, and is␊ |
| 107 | * updated by Biosread().␊ |
| 108 | */␊ |
| 109 | static char * const trackbuf = (char *) ptov(BIOS_ADDR);␊ |
| 110 | static char * biosbuf;␊ |
| 111 | ␊ |
| 112 | /*␊ |
| 113 | * Map a disk drive to bootable volumes contained within.␊ |
| 114 | */␊ |
| 115 | struct DiskBVMap {␊ |
| 116 | int biosdev; // BIOS device number (unique)␊ |
| 117 | BVRef bvr; // chain of boot volumes on the disk␊ |
| 118 | int bvrcnt; // number of boot volumes␊ |
| 119 | struct DiskBVMap * next; // linkage to next mapping␊ |
| 120 | };␊ |
| 121 | ␊ |
| 122 | static struct DiskBVMap * gDiskBVMap = NULL;␊ |
| 123 | static struct disk_blk0 * gBootSector = NULL;␊ |
| 124 | ␊ |
| 125 | // Function pointers to be filled in if ramdisks are available:␊ |
| 126 | int (*p_ramdiskReadBytes)( int biosdev, unsigned int blkno,␊ |
| 127 | unsigned int byteoff,␊ |
| 128 | unsigned int byteCount, void * buffer ) = NULL;␊ |
| 129 | int (*p_get_ramdisk_info)(int biosdev, struct driveInfo *dip) = NULL;␊ |
| 130 | ␊ |
| 131 | ␊ |
| 132 | extern void spinActivityIndicator(int sectors);␊ |
| 133 | ␊ |
| 134 | //==========================================================================␊ |
| 135 | ␊ |
| 136 | static int getDriveInfo( int biosdev, struct driveInfo *dip )␊ |
| 137 | {␊ |
| 138 | static struct driveInfo cached_di;␊ |
| 139 | int cc;␊ |
| 140 | ␊ |
| 141 | // Real BIOS devices are 8-bit, so anything above that is for internal use.␊ |
| 142 | // Don't cache ramdisk drive info since it doesn't require several BIOS␊ |
| 143 | // calls and is thus not worth it.␊ |
| 144 | if(biosdev >= 0x100)␊ |
| 145 | {␊ |
| 146 | if(p_get_ramdisk_info != NULL)␊ |
| 147 | cc = (*p_get_ramdisk_info)(biosdev, dip);␊ |
| 148 | else␊ |
| 149 | cc = -1;␊ |
| 150 | if(cc < 0)␊ |
| 151 | {␊ |
| 152 | dip->valid = 0;␊ |
| 153 | return -1;␊ |
| 154 | }␊ |
| 155 | else␊ |
| 156 | return 0;␊ |
| 157 | }␊ |
| 158 | ␊ |
| 159 | if ( !cached_di.valid || biosdev != cached_di.biosdev )␊ |
| 160 | {␊ |
| 161 | ␉cc = get_drive_info(biosdev, &cached_di);␊ |
| 162 | if (cc < 0) {␊ |
| 163 | ␉ cached_di.valid = 0;␊ |
| 164 | DEBUG_DISK(("get_drive_info returned error\n"));␊ |
| 165 | ␉ return (-1); // BIOS call error␊ |
| 166 | ␉}␊ |
| 167 | }␊ |
| 168 | ␊ |
| 169 | bcopy(&cached_di, dip, sizeof(cached_di));␊ |
| 170 | ␊ |
| 171 | return 0;␊ |
| 172 | }␊ |
| 173 | ␊ |
| 174 | //==========================================================================␊ |
| 175 | // Maps (E)BIOS return codes to message strings.␊ |
| 176 | ␊ |
| 177 | struct NamedValue {␊ |
| 178 | unsigned char value;␊ |
| 179 | const char * name;␊ |
| 180 | };␊ |
| 181 | ␊ |
| 182 | static const char * getNameForValue( const struct NamedValue * nameTable,␊ |
| 183 | unsigned char value )␊ |
| 184 | {␊ |
| 185 | const struct NamedValue * np;␊ |
| 186 | ␊ |
| 187 | for ( np = nameTable; np->value; np++)␊ |
| 188 | if (np->value == value)␊ |
| 189 | return np->name;␊ |
| 190 | ␊ |
| 191 | return NULL;␊ |
| 192 | }␊ |
| 193 | ␊ |
| 194 | #define ECC_CORRECTED_ERR 0x11␊ |
| 195 | ␊ |
| 196 | static const struct NamedValue bios_errors[] = {␊ |
| 197 | { 0x10, "Media error" },␊ |
| 198 | { 0x11, "Corrected ECC error" },␊ |
| 199 | { 0x20, "Controller or device error" },␊ |
| 200 | { 0x40, "Seek failed" },␊ |
| 201 | { 0x80, "Device timeout" },␊ |
| 202 | { 0xAA, "Drive not ready" },␊ |
| 203 | { 0x00, 0 }␊ |
| 204 | };␊ |
| 205 | ␊ |
| 206 | static const char * bios_error(int errnum)␊ |
| 207 | {␊ |
| 208 | static char errorstr[] = "Error 0x00";␊ |
| 209 | const char * errname;␊ |
| 210 | ␊ |
| 211 | errname = getNameForValue( bios_errors, errnum );␊ |
| 212 | if ( errname ) return errname;␊ |
| 213 | ␊ |
| 214 | sprintf(errorstr, "Error 0x%02x", errnum);␊ |
| 215 | return errorstr; // No string, print error code only␊ |
| 216 | }␊ |
| 217 | ␊ |
| 218 | //==========================================================================␊ |
| 219 | // Use BIOS INT13 calls to read the sector specified. This function will␊ |
| 220 | // also perform read-ahead to cache a few subsequent sector to the sector␊ |
| 221 | // cache.␊ |
| 222 | // ␊ |
| 223 | // Return:␊ |
| 224 | // 0 on success, or an error code from INT13/F2 or INT13/F42 BIOS call.␊ |
| 225 | ␊ |
| 226 | static bool cache_valid = false;␊ |
| 227 | ␊ |
| 228 | static int Biosread( int biosdev, unsigned long long secno )␊ |
| 229 | {␊ |
| 230 | static int xbiosdev, xcyl, xhead;␊ |
| 231 | static unsigned int xsec, xnsecs;␊ |
| 232 | struct driveInfo di;␊ |
| 233 | ␊ |
| 234 | int rc = -1;␊ |
| 235 | int cyl, head, sec;␊ |
| 236 | int tries = 0;␊ |
| 237 | int bps, divisor;␊ |
| 238 | ␊ |
| 239 | if (getDriveInfo(biosdev, &di) < 0) {␊ |
| 240 | ␉return -1;␊ |
| 241 | }␊ |
| 242 | if (di.no_emulation) {␊ |
| 243 | ␉/* Always assume 2k block size; BIOS may lie about geometry */␊ |
| 244 | ␉bps = 2048;␊ |
| 245 | } else {␊ |
| 246 | ␉bps = di.di.params.phys_nbps;␊ |
| 247 | if (bps == 0) {␊ |
| 248 | return -1;␊ |
| 249 | }␊ |
| 250 | }␊ |
| 251 | divisor = bps / BPS;␊ |
| 252 | ␊ |
| 253 | DEBUG_DISK(("Biosread dev %x sec %d bps %d\n", biosdev, secno, bps));␊ |
| 254 | ␊ |
| 255 | // To read the disk sectors, use EBIOS if we can. Otherwise,␊ |
| 256 | // revert to the standard BIOS calls.␊ |
| 257 | ␊ |
| 258 | if ((biosdev >= kBIOSDevTypeHardDrive) &&␊ |
| 259 | (di.uses_ebios & EBIOS_FIXED_DISK_ACCESS))␊ |
| 260 | {␊ |
| 261 | if (cache_valid &&␊ |
| 262 | (biosdev == xbiosdev) &&␊ |
| 263 | (secno >= xsec) &&␊ |
| 264 | ((unsigned int)secno < (xsec + xnsecs)))␊ |
| 265 | {␊ |
| 266 | biosbuf = trackbuf + (BPS * (secno - xsec));␊ |
| 267 | return 0;␊ |
| 268 | }␊ |
| 269 | ␊ |
| 270 | xnsecs = N_CACHE_SECS;␊ |
| 271 | xsec = (secno / divisor) * divisor;␊ |
| 272 | cache_valid = false;␊ |
| 273 | ␊ |
| 274 | while ((rc = ebiosread(biosdev, secno / divisor, xnsecs / divisor)) && (++tries < 5))␊ |
| 275 | {␊ |
| 276 | if (rc == ECC_CORRECTED_ERR) {␊ |
| 277 | /* Ignore corrected ECC errors */␊ |
| 278 | rc = 0;␊ |
| 279 | break;␊ |
| 280 | }␊ |
| 281 | error(" EBIOS read error: %s\n", bios_error(rc), rc);␊ |
| 282 | error(" Block 0x%x Sectors %d\n", secno, xnsecs);␊ |
| 283 | sleep(1);␊ |
| 284 | }␊ |
| 285 | }␊ |
| 286 | else␊ |
| 287 | {␊ |
| 288 | ␉/* spc = spt * heads */␊ |
| 289 | ␉int spc = (di.di.params.phys_spt * di.di.params.phys_heads);␊ |
| 290 | cyl = secno / spc;␊ |
| 291 | head = (secno % spc) / di.di.params.phys_spt;␊ |
| 292 | sec = secno % di.di.params.phys_spt;␊ |
| 293 | ␊ |
| 294 | if (cache_valid &&␊ |
| 295 | (biosdev == xbiosdev) &&␊ |
| 296 | (cyl == xcyl) &&␊ |
| 297 | (head == xhead) &&␊ |
| 298 | ((unsigned int)sec >= xsec) &&␊ |
| 299 | ((unsigned int)sec < (xsec + xnsecs)))␊ |
| 300 | {␊ |
| 301 | // this sector is in trackbuf cache␊ |
| 302 | biosbuf = trackbuf + (BPS * (sec - xsec));␊ |
| 303 | return 0;␊ |
| 304 | }␊ |
| 305 | ␊ |
| 306 | // Cache up to a track worth of sectors, but do not cross a␊ |
| 307 | // track boundary.␊ |
| 308 | ␊ |
| 309 | xcyl = cyl;␊ |
| 310 | xhead = head;␊ |
| 311 | xsec = sec;␊ |
| 312 | xnsecs = ((unsigned int)(sec + N_CACHE_SECS) > di.di.params.phys_spt) ? (di.di.params.phys_spt - sec) : N_CACHE_SECS;␊ |
| 313 | cache_valid = false;␊ |
| 314 | ␊ |
| 315 | while ((rc = biosread(biosdev, cyl, head, sec, xnsecs)) &&␊ |
| 316 | (++tries < 5))␊ |
| 317 | {␊ |
| 318 | if (rc == ECC_CORRECTED_ERR) {␊ |
| 319 | /* Ignore corrected ECC errors */␊ |
| 320 | rc = 0;␊ |
| 321 | break;␊ |
| 322 | }␊ |
| 323 | error(" BIOS read error: %s\n", bios_error(rc), rc);␊ |
| 324 | error(" Block %d, Cyl %d Head %d Sector %d\n",␊ |
| 325 | secno, cyl, head, sec);␊ |
| 326 | sleep(1);␊ |
| 327 | }␊ |
| 328 | }␊ |
| 329 | ␊ |
| 330 | // If the BIOS reported success, mark the sector cache as valid.␊ |
| 331 | ␊ |
| 332 | if (rc == 0) {␊ |
| 333 | cache_valid = true;␊ |
| 334 | }␊ |
| 335 | biosbuf = trackbuf + (secno % divisor) * BPS;␊ |
| 336 | xbiosdev = biosdev;␊ |
| 337 | ␊ |
| 338 | spinActivityIndicator(xnsecs);␊ |
| 339 | ␊ |
| 340 | return rc;␊ |
| 341 | }␊ |
| 342 | ␊ |
| 343 | //==========================================================================␊ |
| 344 | ␊ |
| 345 | int testBiosread( int biosdev, unsigned long long secno )␊ |
| 346 | {␊ |
| 347 | ␉return Biosread(biosdev, secno);␊ |
| 348 | }␊ |
| 349 | ␊ |
| 350 | //==========================================================================␊ |
| 351 | ␊ |
| 352 | static int readBytes( int biosdev, unsigned long long blkno,␊ |
| 353 | unsigned int byteoff,␊ |
| 354 | unsigned int byteCount, void * buffer )␊ |
| 355 | {␊ |
| 356 | // ramdisks require completely different code for reading.␊ |
| 357 | if(p_ramdiskReadBytes != NULL && biosdev >= 0x100)␊ |
| 358 | return (*p_ramdiskReadBytes)(biosdev, blkno, byteoff, byteCount, buffer);␊ |
| 359 | ␊ |
| 360 | char * cbuf = (char *) buffer;␊ |
| 361 | int error;␊ |
| 362 | int copy_len;␊ |
| 363 | ␊ |
| 364 | DEBUG_DISK(("%s: dev %x block %x [%d] -> 0x%x...", __FUNCTION__,␊ |
| 365 | biosdev, blkno, byteCount, (unsigned)cbuf));␊ |
| 366 | ␊ |
| 367 | for ( ; byteCount; cbuf += copy_len, blkno++ )␊ |
| 368 | {␊ |
| 369 | error = Biosread( biosdev, blkno );␊ |
| 370 | if ( error )␊ |
| 371 | {␊ |
| 372 | DEBUG_DISK(("error\n"));␊ |
| 373 | return (-1);␊ |
| 374 | }␊ |
| 375 | ␊ |
| 376 | copy_len = ((byteCount + byteoff) > BPS) ? (BPS - byteoff) : byteCount;␊ |
| 377 | bcopy( biosbuf + byteoff, cbuf, copy_len );␊ |
| 378 | byteCount -= copy_len;␊ |
| 379 | byteoff = 0;␊ |
| 380 | }␊ |
| 381 | ␊ |
| 382 | DEBUG_DISK(("done\n"));␊ |
| 383 | ␊ |
| 384 | return 0; ␊ |
| 385 | }␊ |
| 386 | ␊ |
| 387 | //==========================================================================␊ |
| 388 | ␊ |
| 389 | static int isExtendedFDiskPartition( const struct fdisk_part * part )␊ |
| 390 | {␊ |
| 391 | static unsigned char extParts[] =␊ |
| 392 | {␊ |
| 393 | 0x05, /* Extended */␊ |
| 394 | 0x0f, /* Win95 extended */␊ |
| 395 | 0x85, /* Linux extended */␊ |
| 396 | };␊ |
| 397 | ␊ |
| 398 | unsigned int i;␊ |
| 399 | ␊ |
| 400 | for (i = 0; i < sizeof(extParts)/sizeof(extParts[0]); i++)␊ |
| 401 | {␊ |
| 402 | if (extParts[i] == part->systid) return 1;␊ |
| 403 | }␊ |
| 404 | return 0;␊ |
| 405 | }␊ |
| 406 | ␊ |
| 407 | //==========================================================================␊ |
| 408 | ␊ |
| 409 | static int getNextFDiskPartition( int biosdev, int * partno,␊ |
| 410 | const struct fdisk_part ** outPart )␊ |
| 411 | {␊ |
| 412 | static int sBiosdev = -1;␊ |
| 413 | static int sNextPartNo;␊ |
| 414 | static unsigned int sFirstBase;␊ |
| 415 | static unsigned int sExtBase;␊ |
| 416 | static unsigned int sExtDepth;␊ |
| 417 | static struct fdisk_part * sExtPart;␊ |
| 418 | struct fdisk_part * part;␊ |
| 419 | ␊ |
| 420 | if ( sBiosdev != biosdev || *partno < 0 )␊ |
| 421 | {␊ |
| 422 | // Fetch MBR.␊ |
| 423 | if ( readBootSector( biosdev, DISK_BLK0, 0 ) ) return 0;␊ |
| 424 | ␊ |
| 425 | sBiosdev = biosdev;␊ |
| 426 | sNextPartNo = 0;␊ |
| 427 | sFirstBase = 0;␊ |
| 428 | sExtBase = 0;␊ |
| 429 | sExtDepth = 0;␊ |
| 430 | sExtPart = NULL;␊ |
| 431 | }␊ |
| 432 | ␊ |
| 433 | while (1)␊ |
| 434 | {␊ |
| 435 | part = NULL;␊ |
| 436 | ␊ |
| 437 | if ( sNextPartNo < FDISK_NPART )␊ |
| 438 | {␊ |
| 439 | part = (struct fdisk_part *) gBootSector->parts[sNextPartNo];␊ |
| 440 | }␊ |
| 441 | else if ( sExtPart )␊ |
| 442 | {␊ |
| 443 | unsigned int blkno = sExtPart->relsect + sFirstBase;␊ |
| 444 | ␊ |
| 445 | // Save the block offset of the first extended partition.␊ |
| 446 | ␊ |
| 447 | if (sExtDepth == 0) {␊ |
| 448 | sFirstBase = blkno;␊ |
| 449 | }␊ |
| 450 | sExtBase = blkno;␊ |
| 451 | ␊ |
| 452 | // Load extended partition table.␊ |
| 453 | ␊ |
| 454 | if ( readBootSector( biosdev, blkno, 0 ) == 0 )␊ |
| 455 | {␊ |
| 456 | sNextPartNo = 0;␊ |
| 457 | sExtDepth++;␊ |
| 458 | sExtPart = NULL;␊ |
| 459 | continue;␊ |
| 460 | }␊ |
| 461 | // Fall through to part == NULL␊ |
| 462 | }␊ |
| 463 | ␊ |
| 464 | if ( part == NULL ) break; // Reached end of partition chain.␊ |
| 465 | ␊ |
| 466 | // Advance to next partition number.␊ |
| 467 | ␊ |
| 468 | sNextPartNo++;␊ |
| 469 | ␊ |
| 470 | if ( isExtendedFDiskPartition(part) )␊ |
| 471 | {␊ |
| 472 | sExtPart = part;␊ |
| 473 | continue;␊ |
| 474 | }␊ |
| 475 | ␊ |
| 476 | // Skip empty slots.␊ |
| 477 | ␊ |
| 478 | if ( part->systid == 0x00 )␊ |
| 479 | {␊ |
| 480 | continue;␊ |
| 481 | }␊ |
| 482 | ␊ |
| 483 | // Change relative offset to an absolute offset.␊ |
| 484 | part->relsect += sExtBase;␊ |
| 485 | ␊ |
| 486 | *outPart = part;␊ |
| 487 | *partno = sExtDepth ? (int)(sExtDepth + FDISK_NPART) : sNextPartNo;␊ |
| 488 | ␊ |
| 489 | break;␊ |
| 490 | }␊ |
| 491 | ␊ |
| 492 | return (part != NULL);␊ |
| 493 | }␊ |
| 494 | ␊ |
| 495 | //==========================================================================␊ |
| 496 | ␊ |
| 497 | static BVRef newFDiskBVRef( int biosdev, int partno, unsigned int blkoff,␊ |
| 498 | const struct fdisk_part * part,␊ |
| 499 | FSInit initFunc, FSLoadFile loadFunc,␊ |
| 500 | FSReadFile readFunc,␊ |
| 501 | FSGetDirEntry getdirFunc,␊ |
| 502 | FSGetFileBlock getBlockFunc,␊ |
| 503 | FSGetUUID getUUIDFunc,␊ |
| 504 | BVGetDescription getDescriptionFunc,␊ |
| 505 | BVFree bvFreeFunc,␊ |
| 506 | int probe, int type, unsigned int bvrFlags )␊ |
| 507 | {␊ |
| 508 | BVRef bvr = (BVRef) malloc( sizeof(*bvr) );␊ |
| 509 | if ( bvr )␊ |
| 510 | {␊ |
| 511 | bzero(bvr, sizeof(*bvr));␊ |
| 512 | ␊ |
| 513 | bvr->biosdev = biosdev;␊ |
| 514 | bvr->part_no = partno;␊ |
| 515 | bvr->part_boff = blkoff;␊ |
| 516 | bvr->part_type = part->systid;␊ |
| 517 | bvr->fs_loadfile = loadFunc;␊ |
| 518 | bvr->fs_readfile = readFunc;␊ |
| 519 | bvr->fs_getdirentry = getdirFunc;␊ |
| 520 | bvr->fs_getfileblock= getBlockFunc;␊ |
| 521 | bvr->fs_getuuid = getUUIDFunc;␊ |
| 522 | bvr->description = getDescriptionFunc;␊ |
| 523 | bvr->type = type;␊ |
| 524 | bvr->bv_free = bvFreeFunc;␊ |
| 525 | ␊ |
| 526 | if ((part->bootid & FDISK_ACTIVE) && (part->systid == FDISK_HFS))␊ |
| 527 | bvr->flags |= kBVFlagPrimary;␊ |
| 528 | ␊ |
| 529 | // Probe the filesystem.␊ |
| 530 | ␊ |
| 531 | if ( initFunc )␊ |
| 532 | {␊ |
| 533 | bvr->flags |= kBVFlagNativeBoot;␊ |
| 534 | ␊ |
| 535 | if ( probe && initFunc( bvr ) != 0 )␊ |
| 536 | {␊ |
| 537 | // filesystem probe failed.␊ |
| 538 | ␊ |
| 539 | DEBUG_DISK(("%s: failed probe on dev %x part %d\n",␊ |
| 540 | __FUNCTION__, biosdev, partno));␊ |
| 541 | ␊ |
| 542 | (*bvr->bv_free)(bvr);␊ |
| 543 | bvr = NULL;␊ |
| 544 | }␊ |
| 545 | if ( readBootSector( biosdev, blkoff, (void *)0x7e00 ) == 0 )␊ |
| 546 | {␊ |
| 547 | ␉bvr->flags |= kBVFlagBootable;␊ |
| 548 | }␊ |
| 549 | }␊ |
| 550 | else if ( readBootSector( biosdev, blkoff, (void *)0x7e00 ) == 0 )␊ |
| 551 | {␊ |
| 552 | bvr->flags |= kBVFlagForeignBoot;␊ |
| 553 | }␊ |
| 554 | else␊ |
| 555 | {␊ |
| 556 | (*bvr->bv_free)(bvr);␊ |
| 557 | bvr = NULL;␊ |
| 558 | }␊ |
| 559 | }␊ |
| 560 | if (bvr) bvr->flags |= bvrFlags;␊ |
| 561 | return bvr;␊ |
| 562 | }␊ |
| 563 | ␊ |
| 564 | //==========================================================================␊ |
| 565 | ␊ |
| 566 | BVRef newAPMBVRef( int biosdev, int partno, unsigned int blkoff,␊ |
| 567 | const DPME * part,␊ |
| 568 | FSInit initFunc, FSLoadFile loadFunc,␊ |
| 569 | FSReadFile readFunc,␊ |
| 570 | FSGetDirEntry getdirFunc,␊ |
| 571 | FSGetFileBlock getBlockFunc,␊ |
| 572 | FSGetUUID getUUIDFunc,␊ |
| 573 | BVGetDescription getDescriptionFunc,␊ |
| 574 | BVFree bvFreeFunc,␊ |
| 575 | int probe, int type, unsigned int bvrFlags )␊ |
| 576 | {␊ |
| 577 | BVRef bvr = (BVRef) malloc( sizeof(*bvr) );␊ |
| 578 | if ( bvr )␊ |
| 579 | {␊ |
| 580 | bzero(bvr, sizeof(*bvr));␊ |
| 581 | ␊ |
| 582 | bvr->biosdev = biosdev;␊ |
| 583 | bvr->part_no = partno;␊ |
| 584 | bvr->part_boff = blkoff;␊ |
| 585 | bvr->fs_loadfile = loadFunc;␊ |
| 586 | bvr->fs_readfile = readFunc;␊ |
| 587 | bvr->fs_getdirentry = getdirFunc;␊ |
| 588 | bvr->fs_getfileblock= getBlockFunc;␊ |
| 589 | bvr->fs_getuuid = getUUIDFunc;␊ |
| 590 | bvr->description = getDescriptionFunc;␊ |
| 591 | bvr->type = type;␊ |
| 592 | bvr->bv_free = bvFreeFunc;␊ |
| 593 | strlcpy(bvr->name, part->dpme_name, DPISTRLEN);␊ |
| 594 | strlcpy(bvr->type_name, part->dpme_type, DPISTRLEN);␊ |
| 595 | ␊ |
| 596 | /*␊ |
| 597 | if ( part->bootid & FDISK_ACTIVE )␊ |
| 598 | bvr->flags |= kBVFlagPrimary;␊ |
| 599 | */␊ |
| 600 | ␊ |
| 601 | // Probe the filesystem.␊ |
| 602 | ␊ |
| 603 | if ( initFunc )␊ |
| 604 | {␊ |
| 605 | bvr->flags |= kBVFlagNativeBoot | kBVFlagBootable | kBVFlagSystemVolume;␊ |
| 606 | ␊ |
| 607 | if ( probe && initFunc( bvr ) != 0 )␊ |
| 608 | {␊ |
| 609 | // filesystem probe failed.␊ |
| 610 | ␊ |
| 611 | DEBUG_DISK(("%s: failed probe on dev %x part %d\n",␊ |
| 612 | __FUNCTION__, biosdev, partno));␊ |
| 613 | ␊ |
| 614 | (*bvr->bv_free)(bvr);␊ |
| 615 | bvr = NULL;␊ |
| 616 | }␊ |
| 617 | }␊ |
| 618 | /*␊ |
| 619 | else if ( readBootSector( biosdev, blkoff, (void *)0x7e00 ) == 0 )␊ |
| 620 | {␊ |
| 621 | bvr->flags |= kBVFlagForeignBoot;␊ |
| 622 | }␊ |
| 623 | */␊ |
| 624 | else␊ |
| 625 | {␊ |
| 626 | (*bvr->bv_free)(bvr);␊ |
| 627 | bvr = NULL;␊ |
| 628 | }␊ |
| 629 | }␊ |
| 630 | if (bvr) bvr->flags |= bvrFlags;␊ |
| 631 | return bvr;␊ |
| 632 | }␊ |
| 633 | ␊ |
| 634 | //==========================================================================␊ |
| 635 | ␊ |
| 636 | // HFS+ GUID in LE form - Hierarchical File System (HFS+) partition - 48465300-0000-11AA-AA11-00306543ECAC␊ |
| 637 | EFI_GUID const GPT_HFS_GUID␉␉ = { 0x48465300, 0x0000, 0x11AA, { 0xAA, 0x11, 0x00, 0x30, 0x65, 0x43, 0xEC, 0xAC } };␊ |
| 638 | ␊ |
| 639 | // turbo - Apple Boot partition - 426F6F74-0000-11AA-AA11-00306543ECAC␊ |
| 640 | EFI_GUID const GPT_BOOT_GUID␉ = { 0x426F6F74, 0x0000, 0x11AA, { 0xAA, 0x11, 0x00, 0x30, 0x65, 0x43, 0xEC, 0xAC } };␊ |
| 641 | ␊ |
| 642 | // turbo - or an EFI System partition - C12A7328-F81F-11D2-BA4B-00A0C93EC93B␊ |
| 643 | EFI_GUID const GPT_EFISYS_GUID␉ = { 0xC12A7328, 0xF81F, 0x11D2, { 0xBA, 0x4B, 0x00, 0xA0, 0xC9, 0x3E, 0xC9, 0x3B } };␊ |
| 644 | ␊ |
| 645 | // zef - Basic Data partition - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7 for foreign OS support␊ |
| 646 | EFI_GUID const GPT_BASICDATA_GUID = { 0xEBD0A0A2, 0xB9E5, 0x4433, { 0x87, 0xC0, 0x68, 0xB6, 0xB7, 0x26, 0x99, 0xC7 } };␊ |
| 647 | ␊ |
| 648 | // Microsoft Reserved Partition E3C9E316-0B5C-4DB8-817DF92DF00215AE␊ |
| 649 | EFI_GUID const GPT_BASICDATA2_GUID = { 0xE3C9E316, 0x0B5C, 0x4DB8, { 0x81, 0x7D, 0xF9, 0x2D, 0xF0, 0x02, 0x15, 0xAE } };␊ |
| 650 | ␊ |
| 651 | BVRef newGPTBVRef( int biosdev, int partno, unsigned int blkoff,␊ |
| 652 | const gpt_ent * part,␊ |
| 653 | FSInit initFunc, FSLoadFile loadFunc,␊ |
| 654 | FSReadFile readFunc,␊ |
| 655 | FSGetDirEntry getdirFunc,␊ |
| 656 | FSGetFileBlock getBlockFunc,␊ |
| 657 | FSGetUUID getUUIDFunc,␊ |
| 658 | BVGetDescription getDescriptionFunc,␊ |
| 659 | BVFree bvFreeFunc,␊ |
| 660 | int probe, int type, unsigned int bvrFlags )␊ |
| 661 | {␊ |
| 662 | BVRef bvr = (BVRef) malloc( sizeof(*bvr) );␊ |
| 663 | if ( bvr )␊ |
| 664 | {␊ |
| 665 | bzero(bvr, sizeof(*bvr));␊ |
| 666 | ␊ |
| 667 | bvr->biosdev = biosdev;␊ |
| 668 | bvr->part_no = partno;␊ |
| 669 | bvr->part_boff = blkoff;␊ |
| 670 | bvr->fs_loadfile = loadFunc;␊ |
| 671 | bvr->fs_readfile = readFunc;␊ |
| 672 | bvr->fs_getdirentry = getdirFunc;␊ |
| 673 | bvr->fs_getfileblock= getBlockFunc;␊ |
| 674 | bvr->fs_getuuid = getUUIDFunc;␊ |
| 675 | bvr->description = getDescriptionFunc;␊ |
| 676 | ␉bvr->type = type;␊ |
| 677 | bvr->bv_free = bvFreeFunc;␊ |
| 678 | // FIXME: UCS-2 -> UTF-8 the name␊ |
| 679 | strlcpy(bvr->name, "----", DPISTRLEN);␊ |
| 680 | if ( (efi_guid_compare(&GPT_BOOT_GUID, (EFI_GUID const*)part->ent_type) == 0) ||␊ |
| 681 | (efi_guid_compare(&GPT_HFS_GUID, (EFI_GUID const*)part->ent_type) == 0) )␊ |
| 682 | strlcpy(bvr->type_name, "GPT HFS+", DPISTRLEN);␊ |
| 683 | else␊ |
| 684 | strlcpy(bvr->type_name, "GPT Unknown", DPISTRLEN);␊ |
| 685 | ␊ |
| 686 | /*␊ |
| 687 | if ( part->bootid & FDISK_ACTIVE )␊ |
| 688 | bvr->flags |= kBVFlagPrimary;␊ |
| 689 | */␊ |
| 690 | ␊ |
| 691 | // Probe the filesystem.␊ |
| 692 | ␊ |
| 693 | if ( initFunc )␊ |
| 694 | {␊ |
| 695 | bvr->flags |= kBVFlagNativeBoot;␊ |
| 696 | ␊ |
| 697 | if ( probe && initFunc( bvr ) != 0 )␊ |
| 698 | {␊ |
| 699 | // filesystem probe failed.␊ |
| 700 | ␊ |
| 701 | DEBUG_DISK(("%s: failed probe on dev %x part %d\n",␊ |
| 702 | __FUNCTION__, biosdev, partno));␊ |
| 703 | ␊ |
| 704 | (*bvr->bv_free)(bvr);␊ |
| 705 | bvr = NULL;␊ |
| 706 | }␊ |
| 707 | if ( readBootSector( biosdev, blkoff, (void *)0x7e00 ) == 0 )␊ |
| 708 | {␊ |
| 709 | ␉bvr->flags |= kBVFlagBootable;␊ |
| 710 | }␊ |
| 711 | }␊ |
| 712 | else if ( readBootSector( biosdev, blkoff, (void *)0x7e00 ) == 0 )␊ |
| 713 | {␊ |
| 714 | bvr->flags |= kBVFlagForeignBoot;␊ |
| 715 | }␊ |
| 716 | else␊ |
| 717 | {␊ |
| 718 | (*bvr->bv_free)(bvr);␊ |
| 719 | bvr = NULL;␊ |
| 720 | }␊ |
| 721 | }␊ |
| 722 | if (bvr) bvr->flags |= bvrFlags;␊ |
| 723 | return bvr;␊ |
| 724 | }␊ |
| 725 | ␊ |
| 726 | //==========================================================================␊ |
| 727 | ␊ |
| 728 | /* A note on partition numbers:␊ |
| 729 | * IOKit makes the primary partitions numbers 1-4, and then␊ |
| 730 | * extended partitions are numbered consecutively 5 and up.␊ |
| 731 | * So, for example, if you have two primary partitions and␊ |
| 732 | * one extended partition they will be numbered 1, 2, 5.␊ |
| 733 | */␊ |
| 734 | ␊ |
| 735 | static BVRef diskScanFDiskBootVolumes( int biosdev, int * countPtr )␊ |
| 736 | {␊ |
| 737 | const struct fdisk_part * part;␊ |
| 738 | struct DiskBVMap * map;␊ |
| 739 | int partno = -1;␊ |
| 740 | BVRef bvr;␊ |
| 741 | #if UFS_SUPPORT␊ |
| 742 | BVRef booterUFS = NULL;␊ |
| 743 | #endif␊ |
| 744 | int spc;␊ |
| 745 | struct driveInfo di;␊ |
| 746 | boot_drive_info_t *dp;␊ |
| 747 | ␊ |
| 748 | /* Initialize disk info */␊ |
| 749 | if (getDriveInfo(biosdev, &di) != 0) {␊ |
| 750 | ␉return NULL;␊ |
| 751 | }␊ |
| 752 | dp = &di.di;␊ |
| 753 | spc = (dp->params.phys_spt * dp->params.phys_heads);␊ |
| 754 | if (spc == 0) {␊ |
| 755 | ␉/* This is probably a CD-ROM; punt on the geometry. */␊ |
| 756 | ␉spc = 1;␊ |
| 757 | }␊ |
| 758 | ␊ |
| 759 | do {␊ |
| 760 | // Create a new mapping.␊ |
| 761 | ␊ |
| 762 | map = (struct DiskBVMap *) malloc( sizeof(*map) );␊ |
| 763 | if ( map )␊ |
| 764 | {␊ |
| 765 | map->biosdev = biosdev;␊ |
| 766 | map->bvr = NULL;␊ |
| 767 | map->bvrcnt = 0;␊ |
| 768 | map->next = gDiskBVMap;␊ |
| 769 | gDiskBVMap = map;␊ |
| 770 | ␊ |
| 771 | // Create a record for each partition found on the disk.␊ |
| 772 | ␊ |
| 773 | while ( getNextFDiskPartition( biosdev, &partno, &part ) )␊ |
| 774 | {␊ |
| 775 | DEBUG_DISK(("%s: part %d [%x]\n", __FUNCTION__,␊ |
| 776 | partno, part->systid));␊ |
| 777 | bvr = 0;␊ |
| 778 | ␊ |
| 779 | switch ( part->systid )␊ |
| 780 | {␊ |
| 781 | #if UFS_SUPPORT␊ |
| 782 | case FDISK_UFS:␊ |
| 783 | bvr = newFDiskBVRef(␊ |
| 784 | biosdev, partno,␊ |
| 785 | part->relsect + UFS_FRONT_PORCH/BPS,␊ |
| 786 | part,␊ |
| 787 | UFSInitPartition,␊ |
| 788 | UFSLoadFile,␊ |
| 789 | UFSReadFile,␊ |
| 790 | UFSGetDirEntry,␊ |
| 791 | UFSGetFileBlock,␊ |
| 792 | UFSGetUUID,␊ |
| 793 | UFSGetDescription,␊ |
| 794 | UFSFree,␊ |
| 795 | 0,␊ |
| 796 | kBIOSDevTypeHardDrive, 0);␊ |
| 797 | break;␊ |
| 798 | #endif␊ |
| 799 | ␊ |
| 800 | case FDISK_HFS:␊ |
| 801 | bvr = newFDiskBVRef(␊ |
| 802 | biosdev, partno,␊ |
| 803 | part->relsect,␊ |
| 804 | part,␊ |
| 805 | HFSInitPartition,␊ |
| 806 | HFSLoadFile,␊ |
| 807 | HFSReadFile,␊ |
| 808 | HFSGetDirEntry,␊ |
| 809 | HFSGetFileBlock,␊ |
| 810 | HFSGetUUID,␊ |
| 811 | HFSGetDescription,␊ |
| 812 | HFSFree,␊ |
| 813 | 0,␊ |
| 814 | kBIOSDevTypeHardDrive, 0);␊ |
| 815 | break;␊ |
| 816 | ␊ |
| 817 | // turbo - we want the booter type scanned also␊ |
| 818 | case FDISK_BOOTER:␊ |
| 819 | if (part->bootid & FDISK_ACTIVE)␊ |
| 820 | gBIOSBootVolume = newFDiskBVRef(␊ |
| 821 | biosdev, partno,␊ |
| 822 | part->relsect,␊ |
| 823 | part,␊ |
| 824 | HFSInitPartition,␊ |
| 825 | HFSLoadFile,␊ |
| 826 | HFSReadFile,␊ |
| 827 | HFSGetDirEntry,␊ |
| 828 | HFSGetFileBlock,␊ |
| 829 | HFSGetUUID,␊ |
| 830 | HFSGetDescription,␊ |
| 831 | HFSFree,␊ |
| 832 | 0,␊ |
| 833 | kBIOSDevTypeHardDrive, 0);␊ |
| 834 | break;␊ |
| 835 | ␊ |
| 836 | #if UFS_SUPPORT␊ |
| 837 | case FDISK_BOOTER:␊ |
| 838 | booterUFS = newFDiskBVRef(␊ |
| 839 | biosdev, partno,␊ |
| 840 | ((part->relsect + spc - 1) / spc) * spc,␊ |
| 841 | part,␊ |
| 842 | UFSInitPartition,␊ |
| 843 | UFSLoadFile,␊ |
| 844 | UFSReadFile,␊ |
| 845 | UFSGetDirEntry,␊ |
| 846 | UFSGetFileBlock,␊ |
| 847 | UFSGetUUID,␊ |
| 848 | UFSGetDescription,␊ |
| 849 | UFSFree,␊ |
| 850 | 0,␊ |
| 851 | kBIOSDevTypeHardDrive, 0);␊ |
| 852 | break;␊ |
| 853 | #endif␊ |
| 854 | ␊ |
| 855 | case FDISK_FAT32:␊ |
| 856 | case FDISK_DOS12:␊ |
| 857 | case FDISK_DOS16S:␊ |
| 858 | case FDISK_DOS16B:␊ |
| 859 | case FDISK_SMALLFAT32:␊ |
| 860 | case FDISK_DOS16SLBA:␊ |
| 861 | bvr = newFDiskBVRef(␊ |
| 862 | biosdev, partno,␊ |
| 863 | part->relsect,␊ |
| 864 | part,␊ |
| 865 | MSDOSInitPartition,␊ |
| 866 | MSDOSLoadFile,␊ |
| 867 | MSDOSReadFile,␊ |
| 868 | MSDOSGetDirEntry,␊ |
| 869 | MSDOSGetFileBlock,␊ |
| 870 | MSDOSGetUUID,␊ |
| 871 | MSDOSGetDescription,␊ |
| 872 | MSDOSFree,␊ |
| 873 | 0,␊ |
| 874 | kBIOSDevTypeHardDrive, 0);␊ |
| 875 | break;␊ |
| 876 | ␉␉␉␉␉␉␊ |
| 877 | case FDISK_NTFS:␊ |
| 878 | bvr = newFDiskBVRef(␊ |
| 879 | biosdev, partno,␊ |
| 880 | part->relsect,␊ |
| 881 | part,␊ |
| 882 | 0, 0, 0, 0, 0,␊ |
| 883 | NTFSGetUUID,␊ |
| 884 | NTFSGetDescription,␊ |
| 885 | (BVFree)free,␊ |
| 886 | 0, kBIOSDevTypeHardDrive, 0);␊ |
| 887 | break;␊ |
| 888 | ␊ |
| 889 | case FDISK_LINUX:␊ |
| 890 | bvr = newFDiskBVRef(␊ |
| 891 | biosdev, partno,␊ |
| 892 | part->relsect,␊ |
| 893 | part,␊ |
| 894 | 0, 0, 0, 0, 0, 0,␊ |
| 895 | EX2GetDescription,␊ |
| 896 | (BVFree)free,␊ |
| 897 | 0, kBIOSDevTypeHardDrive, 0);␊ |
| 898 | break;␊ |
| 899 | ␉␉␉␉␊ |
| 900 | default:␊ |
| 901 | bvr = newFDiskBVRef(␊ |
| 902 | biosdev, partno,␊ |
| 903 | part->relsect,␊ |
| 904 | part,␊ |
| 905 | 0, 0, 0, 0, 0, 0, 0,␊ |
| 906 | (BVFree)free,␊ |
| 907 | 0,␊ |
| 908 | kBIOSDevTypeHardDrive, 0);␊ |
| 909 | break;␊ |
| 910 | }␊ |
| 911 | ␊ |
| 912 | if ( bvr )␊ |
| 913 | {␊ |
| 914 | bvr->next = map->bvr;␊ |
| 915 | map->bvr = bvr;␊ |
| 916 | map->bvrcnt++;␊ |
| 917 | }␊ |
| 918 | }␊ |
| 919 | ␊ |
| 920 | #if UFS_SUPPORT␊ |
| 921 | // Booting from a CD with an UFS filesystem embedded␊ |
| 922 | // in a booter partition.␊ |
| 923 | ␊ |
| 924 | if ( booterUFS )␊ |
| 925 | {␊ |
| 926 | if ( map->bvrcnt == 0 )␊ |
| 927 | {␊ |
| 928 | map->bvr = booterUFS;␊ |
| 929 | map->bvrcnt++;␊ |
| 930 | }␊ |
| 931 | else free( booterUFS );␊ |
| 932 | }␊ |
| 933 | #endif␊ |
| 934 | }␊ |
| 935 | } while (0);␊ |
| 936 | ␊ |
| 937 | /*␊ |
| 938 | * If no FDisk partition, then we will check for␊ |
| 939 | * an Apple partition map elsewhere.␊ |
| 940 | */␊ |
| 941 | #if UNUSED␊ |
| 942 | if (map->bvrcnt == 0) {␊ |
| 943 | ␉static struct fdisk_part cdpart;␊ |
| 944 | ␉cdpart.systid = 0xCD;␊ |
| 945 | ␊ |
| 946 | ␉/* Let's try assuming we are on a hybrid HFS/ISO9660 CD. */␊ |
| 947 | ␉bvr = newFDiskBVRef(␊ |
| 948 | ␉␉␉ biosdev, 0,␊ |
| 949 | ␉␉␉ 0,␊ |
| 950 | ␉␉␉ &cdpart,␊ |
| 951 | ␉␉␉ HFSInitPartition,␊ |
| 952 | ␉␉␉ HFSLoadFile,␊ |
| 953 | HFSReadFile,␊ |
| 954 | ␉␉␉ HFSGetDirEntry,␊ |
| 955 | HFSGetFileBlock,␊ |
| 956 | HFSGetUUID,␊ |
| 957 | ␉␉␉ 0,␊ |
| 958 | ␉␉␉ kBIOSDevTypeHardDrive);␊ |
| 959 | ␉bvr->next = map->bvr;␊ |
| 960 | ␉map->bvr = bvr;␊ |
| 961 | ␉map->bvrcnt++;␊ |
| 962 | }␊ |
| 963 | #endif␊ |
| 964 | // Actually this should always be true given the above code␊ |
| 965 | if(map == gDiskBVMap)␊ |
| 966 | {␊ |
| 967 | // Don't leave a null map in the chain␊ |
| 968 | if(map->bvrcnt == 0 && map->bvr == NULL)␊ |
| 969 | {␊ |
| 970 | gDiskBVMap = map->next;␊ |
| 971 | free(map);␊ |
| 972 | map = NULL;␊ |
| 973 | }␊ |
| 974 | }␊ |
| 975 | ␊ |
| 976 | if (countPtr) *countPtr = map ? map->bvrcnt : 0;␊ |
| 977 | ␊ |
| 978 | return map ? map->bvr : NULL;␊ |
| 979 | }␊ |
| 980 | ␊ |
| 981 | //==========================================================================␊ |
| 982 | ␊ |
| 983 | static BVRef diskScanAPMBootVolumes( int biosdev, int * countPtr )␊ |
| 984 | {␊ |
| 985 | struct DiskBVMap * map;␊ |
| 986 | struct Block0 *block0_p;␊ |
| 987 | unsigned int blksize;␊ |
| 988 | unsigned int factor;␊ |
| 989 | void *buffer = malloc(BPS);␊ |
| 990 | ␊ |
| 991 | /* Check for alternate block size */␊ |
| 992 | if (readBytes( biosdev, 0, 0, BPS, buffer ) != 0) {␊ |
| 993 | return NULL;␊ |
| 994 | }␊ |
| 995 | block0_p = buffer;␊ |
| 996 | if (OSSwapBigToHostInt16(block0_p->sbSig) == BLOCK0_SIGNATURE) {␊ |
| 997 | blksize = OSSwapBigToHostInt16(block0_p->sbBlkSize);␊ |
| 998 | if (blksize != BPS) {␊ |
| 999 | free(buffer);␊ |
| 1000 | buffer = malloc(blksize);␊ |
| 1001 | }␊ |
| 1002 | factor = blksize / BPS;␊ |
| 1003 | } else {␊ |
| 1004 | blksize = BPS;␊ |
| 1005 | factor = 1;␊ |
| 1006 | }␊ |
| 1007 | ␊ |
| 1008 | do {␊ |
| 1009 | // Create a new mapping.␊ |
| 1010 | ␊ |
| 1011 | map = (struct DiskBVMap *) malloc( sizeof(*map) );␊ |
| 1012 | if ( map )␊ |
| 1013 | {␊ |
| 1014 | int error;␊ |
| 1015 | DPME *dpme_p = (DPME *)buffer;␊ |
| 1016 | UInt32 i, npart = UINT_MAX;␊ |
| 1017 | BVRef bvr;␊ |
| 1018 | ␊ |
| 1019 | map->biosdev = biosdev;␊ |
| 1020 | map->bvr = NULL;␊ |
| 1021 | map->bvrcnt = 0;␊ |
| 1022 | map->next = gDiskBVMap;␊ |
| 1023 | gDiskBVMap = map;␊ |
| 1024 | ␊ |
| 1025 | for (i=0; i<npart; i++) {␊ |
| 1026 | error = readBytes( biosdev, (kAPMSector + i) * factor, 0, blksize, buffer );␊ |
| 1027 | ␊ |
| 1028 | if (error || OSSwapBigToHostInt16(dpme_p->dpme_signature) != DPME_SIGNATURE) {␊ |
| 1029 | break;␊ |
| 1030 | }␊ |
| 1031 | ␊ |
| 1032 | if (i==0) {␊ |
| 1033 | npart = OSSwapBigToHostInt32(dpme_p->dpme_map_entries);␊ |
| 1034 | }␊ |
| 1035 | /*␊ |
| 1036 | printf("name = %s, %s%s %d -> %d [%d -> %d] {%d}\n",␊ |
| 1037 | dpme.dpme_name, dpme.dpme_type, (dpme.dpme_flags & DPME_FLAGS_BOOTABLE) ? "(bootable)" : "",␊ |
| 1038 | dpme.dpme_pblock_start, dpme.dpme_pblocks,␊ |
| 1039 | dpme.dpme_lblock_start, dpme.dpme_lblocks,␊ |
| 1040 | dpme.dpme_boot_block);␊ |
| 1041 | */␊ |
| 1042 | ␊ |
| 1043 | if (strcmp(dpme_p->dpme_type, "Apple_HFS") == 0) {␊ |
| 1044 | bvr = newAPMBVRef(biosdev,␊ |
| 1045 | i,␊ |
| 1046 | OSSwapBigToHostInt32(dpme_p->dpme_pblock_start) * factor,␊ |
| 1047 | dpme_p,␊ |
| 1048 | HFSInitPartition,␊ |
| 1049 | HFSLoadFile,␊ |
| 1050 | HFSReadFile,␊ |
| 1051 | HFSGetDirEntry,␊ |
| 1052 | HFSGetFileBlock,␊ |
| 1053 | HFSGetUUID,␊ |
| 1054 | HFSGetDescription,␊ |
| 1055 | HFSFree,␊ |
| 1056 | 0,␊ |
| 1057 | kBIOSDevTypeHardDrive, 0);␊ |
| 1058 | bvr->next = map->bvr;␊ |
| 1059 | map->bvr = bvr;␊ |
| 1060 | map->bvrcnt++;␊ |
| 1061 | }␊ |
| 1062 | }␊ |
| 1063 | }␊ |
| 1064 | } while (0);␊ |
| 1065 | ␊ |
| 1066 | free(buffer);␊ |
| 1067 | ␊ |
| 1068 | if (countPtr) *countPtr = map ? map->bvrcnt : 0;␊ |
| 1069 | ␊ |
| 1070 | return map ? map->bvr : NULL;␊ |
| 1071 | }␊ |
| 1072 | ␊ |
| 1073 | //==========================================================================␊ |
| 1074 | ␊ |
| 1075 | // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -␊ |
| 1076 | ␊ |
| 1077 | /*␊ |
| 1078 | * Trying to figure out the filsystem type of a given partition.␊ |
| 1079 | */␊ |
| 1080 | static int probeFileSystem(int biosdev, unsigned int blkoff)␊ |
| 1081 | {␊ |
| 1082 | // detected filesystem type;␊ |
| 1083 | int result = -1;␊ |
| 1084 | int fatbits;␊ |
| 1085 | ␊ |
| 1086 | // Allocating buffer for 4 sectors.␊ |
| 1087 | const void * probeBuffer = malloc(PROBEFS_SIZE);␊ |
| 1088 | if (probeBuffer == NULL)␊ |
| 1089 | goto exit;␊ |
| 1090 | ␊ |
| 1091 | // Reading first 4 sectors of current partition␊ |
| 1092 | int error = readBytes(biosdev, blkoff, 0, PROBEFS_SIZE, (void *)probeBuffer);␊ |
| 1093 | if (error)␊ |
| 1094 | goto exit;␊ |
| 1095 | ␊ |
| 1096 | if (HFSProbe(probeBuffer))␊ |
| 1097 | result = FDISK_HFS;␊ |
| 1098 | else if (EX2Probe(probeBuffer))␊ |
| 1099 | ␉ result = FDISK_LINUX;␊ |
| 1100 | else if (NTFSProbe(probeBuffer))␊ |
| 1101 | result = FDISK_NTFS;␊ |
| 1102 | else if (fatbits=MSDOSProbe(probeBuffer))␊ |
| 1103 | {␊ |
| 1104 | ␉ switch (fatbits)␊ |
| 1105 | ␉ {␊ |
| 1106 | ␉␉ case 32:␊ |
| 1107 | ␉␉ default:␊ |
| 1108 | ␉␉␉ result = FDISK_FAT32;␊ |
| 1109 | ␉␉␉ break;␊ |
| 1110 | ␉␉ case 16:␊ |
| 1111 | ␉␉␉ result = FDISK_DOS16B;␊ |
| 1112 | ␉␉␉ break;␊ |
| 1113 | ␉␉ case 12:␊ |
| 1114 | ␉␉␉ result = FDISK_DOS12;␊ |
| 1115 | ␉␉␉ break;␉␉␉ ␊ |
| 1116 | ␉ }␊ |
| 1117 | }␊ |
| 1118 | else␊ |
| 1119 | // Couldn't detect filesystem type␊ |
| 1120 | result = 0;␊ |
| 1121 | ␊ |
| 1122 | exit:␊ |
| 1123 | if (probeBuffer != NULL) free((void *)probeBuffer);␊ |
| 1124 | return result;␊ |
| 1125 | }␊ |
| 1126 | ␊ |
| 1127 | static bool isPartitionUsed(gpt_ent * partition)␊ |
| 1128 | {␊ |
| 1129 | //␊ |
| 1130 | // Ask whether the given partition is used.␊ |
| 1131 | //␊ |
| 1132 | ␊ |
| 1133 | return efi_guid_is_null((EFI_GUID const*)partition->ent_type) ? false : true;␊ |
| 1134 | }␊ |
| 1135 | ␊ |
| 1136 | // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -␊ |
| 1137 | ␊ |
| 1138 | static BVRef diskScanGPTBootVolumes( int biosdev, int * countPtr )␊ |
| 1139 | {␊ |
| 1140 | struct DiskBVMap * map = NULL;␊ |
| 1141 | void *buffer = malloc(BPS);␊ |
| 1142 | int error;␊ |
| 1143 | if ( error = readBytes( biosdev, /*secno*/0, 0, BPS, buffer ) != 0) {␊ |
| 1144 | verbose("Failed to read boot sector from BIOS device %02xh. Error=%d\n", biosdev, error);␊ |
| 1145 | goto scanErr;␊ |
| 1146 | }␊ |
| 1147 | struct REAL_disk_blk0 *fdiskMap = buffer;␊ |
| 1148 | if ( OSSwapLittleToHostInt16(fdiskMap->signature) != DISK_SIGNATURE )␊ |
| 1149 | {␊ |
| 1150 | verbose("Failed to find boot signature on BIOS device %02xh\n", biosdev);␊ |
| 1151 | goto scanErr;␊ |
| 1152 | }␊ |
| 1153 | ␊ |
| 1154 | int fdiskID = 0;␊ |
| 1155 | unsigned index;␊ |
| 1156 | for ( index = 0; index < FDISK_NPART; index++ )␊ |
| 1157 | {␊ |
| 1158 | if ( fdiskMap->parts[index].systid )␊ |
| 1159 | {␊ |
| 1160 | if ( fdiskMap->parts[index].systid == 0xEE )␊ |
| 1161 | {␊ |
| 1162 | // Fail if two 0xEE partitions are present which␊ |
| 1163 | // means the FDISK code will wind up parsing it.␊ |
| 1164 | if ( fdiskID ) goto scanErr;␊ |
| 1165 | ␊ |
| 1166 | fdiskID = index + 1;␊ |
| 1167 | }␊ |
| 1168 | }␊ |
| 1169 | }␊ |
| 1170 | ␊ |
| 1171 | if ( fdiskID == 0 ) goto scanErr;␊ |
| 1172 | verbose("Attempting to read GPT\n");␊ |
| 1173 | ␊ |
| 1174 | if(readBytes(biosdev, 1, 0, BPS, buffer) != 0)␊ |
| 1175 | goto scanErr;␊ |
| 1176 | ␊ |
| 1177 | gpt_hdr *headerMap = buffer;␊ |
| 1178 | ␊ |
| 1179 | // Determine whether the partition header signature is present.␊ |
| 1180 | ␊ |
| 1181 | if ( memcmp(headerMap->hdr_sig, GPT_HDR_SIG, strlen(GPT_HDR_SIG)) )␊ |
| 1182 | {␊ |
| 1183 | goto scanErr;␊ |
| 1184 | }␊ |
| 1185 | ␊ |
| 1186 | // Determine whether the partition header size is valid.␊ |
| 1187 | ␊ |
| 1188 | UInt32 headerCheck = OSSwapLittleToHostInt32(headerMap->hdr_crc_self);␊ |
| 1189 | UInt32 headerSize = OSSwapLittleToHostInt32(headerMap->hdr_size);␊ |
| 1190 | ␊ |
| 1191 | if ( headerSize < offsetof(gpt_hdr, padding) )␊ |
| 1192 | {␊ |
| 1193 | goto scanErr;␊ |
| 1194 | }␊ |
| 1195 | ␊ |
| 1196 | if ( headerSize > BPS )␊ |
| 1197 | {␊ |
| 1198 | goto scanErr;␊ |
| 1199 | }␊ |
| 1200 | ␊ |
| 1201 | // Determine whether the partition header checksum is valid.␊ |
| 1202 | ␊ |
| 1203 | headerMap->hdr_crc_self = 0;␊ |
| 1204 | ␊ |
| 1205 | if ( crc32(0, headerMap, headerSize) != headerCheck )␊ |
| 1206 | {␊ |
| 1207 | goto scanErr;␊ |
| 1208 | }␊ |
| 1209 | ␊ |
| 1210 | // Determine whether the partition entry size is valid.␊ |
| 1211 | ␊ |
| 1212 | UInt64 gptBlock = 0;␊ |
| 1213 | UInt32 gptCheck = 0;␊ |
| 1214 | UInt32 gptCount = 0;␊ |
| 1215 | UInt32 gptID = 0;␊ |
| 1216 | gpt_ent * gptMap = 0;␊ |
| 1217 | UInt32 gptSize = 0;␊ |
| 1218 | ␊ |
| 1219 | gptBlock = OSSwapLittleToHostInt64(headerMap->hdr_lba_table);␊ |
| 1220 | gptCheck = OSSwapLittleToHostInt32(headerMap->hdr_crc_table);␊ |
| 1221 | gptCount = OSSwapLittleToHostInt32(headerMap->hdr_entries);␊ |
| 1222 | gptSize = OSSwapLittleToHostInt32(headerMap->hdr_entsz);␊ |
| 1223 | ␊ |
| 1224 | if ( gptSize < sizeof(gpt_ent) )␊ |
| 1225 | {␊ |
| 1226 | goto scanErr;␊ |
| 1227 | }␊ |
| 1228 | ␊ |
| 1229 | // Allocate a buffer large enough to hold one map, rounded to a media block.␊ |
| 1230 | free(buffer);␊ |
| 1231 | buffer = NULL;␊ |
| 1232 | ␊ |
| 1233 | UInt32 bufferSize = IORound(gptCount * gptSize, BPS);␊ |
| 1234 | if(bufferSize == 0)␊ |
| 1235 | goto scanErr;␊ |
| 1236 | buffer = malloc(bufferSize);␊ |
| 1237 | ␊ |
| 1238 | if(readBytes(biosdev, gptBlock, 0, bufferSize, buffer) != 0)␊ |
| 1239 | goto scanErr;␊ |
| 1240 | ␊ |
| 1241 | verbose("Read GPT\n");␊ |
| 1242 | ␊ |
| 1243 | // Allocate a new map for this BIOS device and insert it into the chain␊ |
| 1244 | map = malloc(sizeof(*map));␊ |
| 1245 | map->biosdev = biosdev;␊ |
| 1246 | map->bvr = NULL;␊ |
| 1247 | map->bvrcnt = 0;␊ |
| 1248 | map->next = gDiskBVMap;␊ |
| 1249 | gDiskBVMap = map;␊ |
| 1250 | ␊ |
| 1251 | // fdisk like partition type id.␊ |
| 1252 | int fsType = 0;␊ |
| 1253 | ␊ |
| 1254 | for(gptID = 1; gptID <= gptCount; ++gptID)␊ |
| 1255 | {␊ |
| 1256 | ␉␉␉␉BVRef bvr = NULL;␊ |
| 1257 | ␉␉␉␉unsigned int bvrFlags = 0;␊ |
| 1258 | ␊ |
| 1259 | // size on disk can be larger than sizeof(gpt_ent)␊ |
| 1260 | gptMap = (gpt_ent *) ( buffer + ( (gptID - 1) * gptSize) );␊ |
| 1261 | ␊ |
| 1262 | // NOTE: EFI_GUID's are in LE and we know we're on an x86.␊ |
| 1263 | // The IOGUIDPartitionScheme.cpp code uses byte-based UUIDs, we don't.␊ |
| 1264 | ␊ |
| 1265 | if (isPartitionUsed(gptMap))␊ |
| 1266 | {␊ |
| 1267 | char stringuuid[100];␊ |
| 1268 | efi_guid_unparse_upper((EFI_GUID*)gptMap->ent_type, stringuuid);␊ |
| 1269 | verbose("Reading GPT partition %d, type %s\n", gptID, stringuuid);␊ |
| 1270 | ␊ |
| 1271 | // Getting fdisk like partition type.␊ |
| 1272 | fsType = probeFileSystem(biosdev, gptMap->ent_lba_start);␊ |
| 1273 | ␊ |
| 1274 | if ( (efi_guid_compare(&GPT_BOOT_GUID, (EFI_GUID const*)gptMap->ent_type) == 0) ||␊ |
| 1275 | (efi_guid_compare(&GPT_HFS_GUID, (EFI_GUID const*)gptMap->ent_type) == 0) )␊ |
| 1276 | {␊ |
| 1277 | bvrFlags = (efi_guid_compare(&GPT_BOOT_GUID, (EFI_GUID const*)gptMap->ent_type) == 0) ? kBVFlagBooter : 0;␊ |
| 1278 | bvr = newGPTBVRef(biosdev,␊ |
| 1279 | gptID,␊ |
| 1280 | gptMap->ent_lba_start,␊ |
| 1281 | gptMap,␊ |
| 1282 | HFSInitPartition,␊ |
| 1283 | HFSLoadFile,␊ |
| 1284 | HFSReadFile,␊ |
| 1285 | HFSGetDirEntry,␊ |
| 1286 | HFSGetFileBlock,␊ |
| 1287 | HFSGetUUID,␊ |
| 1288 | HFSGetDescription,␊ |
| 1289 | HFSFree,␊ |
| 1290 | 0,␊ |
| 1291 | kBIOSDevTypeHardDrive, bvrFlags);␊ |
| 1292 | }␊ |
| 1293 | ␊ |
| 1294 | ␉␉␉// zef - foreign OS support␊ |
| 1295 | if ( (efi_guid_compare(&GPT_BASICDATA_GUID, (EFI_GUID const*)gptMap->ent_type) == 0) ||␊ |
| 1296 | (efi_guid_compare(&GPT_BASICDATA2_GUID, (EFI_GUID const*)gptMap->ent_type) == 0) )␊ |
| 1297 | {␊ |
| 1298 | ␉␉␉␉␉␉␉switch (fsType)␊ |
| 1299 | {␊ |
| 1300 | ␉␉␉␉␉␉␉ case FDISK_NTFS:␊ |
| 1301 | ␉␉␉␉␉␉␉ bvr = newGPTBVRef(biosdev, gptID, gptMap->ent_lba_start, gptMap,␊ |
| 1302 | ␉ ␉␉␉␉␉␉␉␉0, 0, 0, 0, 0, 0, NTFSGetDescription,␊ |
| 1303 | ␉␉ ␉␉␉␉␉␉␉(BVFree)free, 0, kBIOSDevTypeHardDrive, 0);␊ |
| 1304 | ␉␉␉␉␉␉␉␉break;␊ |
| 1305 | ␊ |
| 1306 | default:␊ |
| 1307 | bvr = newGPTBVRef(biosdev, gptID, gptMap->ent_lba_start, gptMap,␊ |
| 1308 | 0, 0, 0, 0, 0, 0, 0,␊ |
| 1309 | (BVFree)free, 0, kBIOSDevTypeHardDrive, 0);␊ |
| 1310 | break;␊ |
| 1311 | }␊ |
| 1312 | ␉␉␉␉␉␉␉ ␊ |
| 1313 | }␊ |
| 1314 | ␊ |
| 1315 | // turbo - save our booter partition␊ |
| 1316 | // zef - only on original boot device␊ |
| 1317 | if ( (efi_guid_compare(&GPT_EFISYS_GUID, (EFI_GUID const*)gptMap->ent_type) == 0) )␊ |
| 1318 | {␊ |
| 1319 | ␉␉␉␉␉␉␉switch (fsType)␊ |
| 1320 | {␊ |
| 1321 | case FDISK_HFS:␊ |
| 1322 | if (readBootSector( biosdev, gptMap->ent_lba_start, (void *)0x7e00 ) == 0)␊ |
| 1323 | {␊ |
| 1324 | bvr = newGPTBVRef(biosdev, gptID, gptMap->ent_lba_start, gptMap,␊ |
| 1325 | HFSInitPartition,␊ |
| 1326 | HFSLoadFile,␊ |
| 1327 | HFSReadFile,␊ |
| 1328 | HFSGetDirEntry,␊ |
| 1329 | HFSGetFileBlock,␊ |
| 1330 | HFSGetUUID,␊ |
| 1331 | HFSGetDescription,␊ |
| 1332 | HFSFree,␊ |
| 1333 | 0, kBIOSDevTypeHardDrive, kBVFlagEFISystem);␊ |
| 1334 | }␊ |
| 1335 | break;␊ |
| 1336 | ␊ |
| 1337 | case FDISK_FAT32:␊ |
| 1338 | if (testFAT32EFIBootSector( biosdev, gptMap->ent_lba_start, (void *)0x7e00 ) == 0)␊ |
| 1339 | {␊ |
| 1340 | bvr = newGPTBVRef(biosdev, gptID, gptMap->ent_lba_start, gptMap,␊ |
| 1341 | MSDOSInitPartition,␊ |
| 1342 | MSDOSLoadFile,␊ |
| 1343 | MSDOSReadFile,␊ |
| 1344 | MSDOSGetDirEntry,␊ |
| 1345 | MSDOSGetFileBlock,␊ |
| 1346 | MSDOSGetUUID,␊ |
| 1347 | MSDOSGetDescription,␊ |
| 1348 | MSDOSFree,␊ |
| 1349 | 0, kBIOSDevTypeHardDrive, kBVFlagEFISystem);␊ |
| 1350 | }␊ |
| 1351 | break;␊ |
| 1352 | ␊ |
| 1353 | if (biosdev == gBIOSDev)␊ |
| 1354 | gBIOSBootVolume = bvr;␊ |
| 1355 | }␊ |
| 1356 | } ␊ |
| 1357 | ␊ |
| 1358 | ␉␉␉␉␉␉if (bvr)␊ |
| 1359 | ␉␉␉␉␉␉{␊ |
| 1360 | // Fixup bvr with the fake fdisk partition type.␊ |
| 1361 | if (fsType > 0) bvr->part_type = fsType;␊ |
| 1362 | ␊ |
| 1363 | ␉␉␉␉␉␉␉bvr->next = map->bvr;␊ |
| 1364 | ␉␉␉␉␉␉␉map->bvr = bvr;␊ |
| 1365 | ␉␉␉␉␉␉␉++map->bvrcnt;␊ |
| 1366 | ␉␉␉␉␉␉}␊ |
| 1367 | ␊ |
| 1368 | }␊ |
| 1369 | }␊ |
| 1370 | ␊ |
| 1371 | scanErr:␊ |
| 1372 | free(buffer);␊ |
| 1373 | ␊ |
| 1374 | if(map)␊ |
| 1375 | {␊ |
| 1376 | if(countPtr) *countPtr = map->bvrcnt;␊ |
| 1377 | return map->bvr;␊ |
| 1378 | }␊ |
| 1379 | else␊ |
| 1380 | {␊ |
| 1381 | if(countPtr) *countPtr = 0;␊ |
| 1382 | return NULL;␊ |
| 1383 | }␊ |
| 1384 | }␊ |
| 1385 | ␊ |
| 1386 | //==========================================================================␊ |
| 1387 | ␊ |
| 1388 | static void scanFSLevelBVRSettings(BVRef chain)␊ |
| 1389 | {␊ |
| 1390 | BVRef bvr;␊ |
| 1391 | char dirSpec[512], fileSpec[512];␊ |
| 1392 | char label[BVSTRLEN];␊ |
| 1393 | int ret;␊ |
| 1394 | long flags, time;␊ |
| 1395 | int fh, fileSize, error;␊ |
| 1396 | ␊ |
| 1397 | for (bvr = chain; bvr; bvr = bvr->next)␊ |
| 1398 | {␊ |
| 1399 | ret = -1;␊ |
| 1400 | error = 0;␊ |
| 1401 | ␊ |
| 1402 | //␊ |
| 1403 | // Check for alternate volume label on boot helper partitions.␊ |
| 1404 | //␊ |
| 1405 | if (bvr->flags & kBVFlagBooter)␊ |
| 1406 | {␊ |
| 1407 | sprintf(dirSpec, "hd(%d,%d)/System/Library/CoreServices/", BIOS_DEV_UNIT(bvr), bvr->part_no);␊ |
| 1408 | strcpy(fileSpec, ".disk_label.contentDetails");␊ |
| 1409 | ret = GetFileInfo(dirSpec, fileSpec, &flags, &time);␊ |
| 1410 | if (!ret)␊ |
| 1411 | {␊ |
| 1412 | fh = open(strcat(dirSpec, fileSpec), 0);␊ |
| 1413 | fileSize = file_size(fh);␊ |
| 1414 | if (fileSize > 0 && fileSize < BVSTRLEN)␊ |
| 1415 | {␊ |
| 1416 | if (read(fh, label, fileSize) != fileSize)␊ |
| 1417 | error = -1;␊ |
| 1418 | }␊ |
| 1419 | else␊ |
| 1420 | error = -1;␊ |
| 1421 | ␊ |
| 1422 | close(fh);␊ |
| 1423 | ␊ |
| 1424 | if (!error)␊ |
| 1425 | {␊ |
| 1426 | label[fileSize] = '\0';␊ |
| 1427 | strcpy(bvr->altlabel, label);␊ |
| 1428 | }␊ |
| 1429 | }␊ |
| 1430 | }␊ |
| 1431 | ␊ |
| 1432 | //␊ |
| 1433 | // Check for SystemVersion.plist or ServerVersion.plist␊ |
| 1434 | // to determine if a volume hosts an installed system.␊ |
| 1435 | //␊ |
| 1436 | if (bvr->flags & kBVFlagNativeBoot)␊ |
| 1437 | {␊ |
| 1438 | sprintf(dirSpec, "hd(%d,%d)/System/Library/CoreServices/", BIOS_DEV_UNIT(bvr), bvr->part_no);␊ |
| 1439 | strcpy(fileSpec, "SystemVersion.plist");␊ |
| 1440 | ret = GetFileInfo(dirSpec, fileSpec, &flags, &time);␊ |
| 1441 | ␊ |
| 1442 | if (ret == -1)␊ |
| 1443 | {␊ |
| 1444 | strcpy(fileSpec, "ServerVersion.plist");␊ |
| 1445 | ret = GetFileInfo(dirSpec, fileSpec, &flags, &time);␊ |
| 1446 | }␊ |
| 1447 | ␊ |
| 1448 | if (!ret)␊ |
| 1449 | bvr->flags |= kBVFlagSystemVolume;␊ |
| 1450 | }␊ |
| 1451 | ␊ |
| 1452 | }␊ |
| 1453 | }␊ |
| 1454 | ␊ |
| 1455 | void rescanBIOSDevice(int biosdev)␊ |
| 1456 | {␊ |
| 1457 | ␉struct DiskBVMap *oldMap = diskResetBootVolumes(biosdev);␊ |
| 1458 | ␉CacheReset();␊ |
| 1459 | ␉diskFreeMap(oldMap);␊ |
| 1460 | ␉oldMap = NULL;␊ |
| 1461 | ␉scanBootVolumes(biosdev, 0);␊ |
| 1462 | }␊ |
| 1463 | ␊ |
| 1464 | struct DiskBVMap* diskResetBootVolumes(int biosdev)␊ |
| 1465 | {␊ |
| 1466 | struct DiskBVMap * map;␊ |
| 1467 | struct DiskBVMap *prevMap = NULL;␊ |
| 1468 | for ( map = gDiskBVMap; map; prevMap = map, map = map->next ) {␊ |
| 1469 | if ( biosdev == map->biosdev ) {␊ |
| 1470 | break;␊ |
| 1471 | }␊ |
| 1472 | }␊ |
| 1473 | if(map != NULL)␊ |
| 1474 | {␊ |
| 1475 | verbose("Resetting BIOS device %xh\n", biosdev);␊ |
| 1476 | // Reset the biosbuf cache␊ |
| 1477 | cache_valid = false;␊ |
| 1478 | if(map == gDiskBVMap)␊ |
| 1479 | gDiskBVMap = map->next;␊ |
| 1480 | else if(prevMap != NULL)␊ |
| 1481 | prevMap->next = map->next;␊ |
| 1482 | else␊ |
| 1483 | stop("");␊ |
| 1484 | }␊ |
| 1485 | // Return the old map, either to be freed, or reinserted later␊ |
| 1486 | return map;␊ |
| 1487 | }␊ |
| 1488 | ␊ |
| 1489 | // Frees a DiskBVMap and all of its BootVolume's␊ |
| 1490 | void diskFreeMap(struct DiskBVMap *map)␊ |
| 1491 | {␊ |
| 1492 | if(map != NULL)␊ |
| 1493 | {␊ |
| 1494 | while(map->bvr != NULL)␊ |
| 1495 | {␊ |
| 1496 | BVRef bvr = map->bvr;␊ |
| 1497 | map->bvr = bvr->next;␊ |
| 1498 | (*bvr->bv_free)(bvr);␊ |
| 1499 | }␊ |
| 1500 | free(map);␊ |
| 1501 | }␊ |
| 1502 | }␊ |
| 1503 | ␊ |
| 1504 | BVRef diskScanBootVolumes( int biosdev, int * countPtr )␊ |
| 1505 | {␊ |
| 1506 | struct DiskBVMap * map;␊ |
| 1507 | BVRef bvr;␊ |
| 1508 | int count = 0;␊ |
| 1509 | ␊ |
| 1510 | // Find an existing mapping for this device.␊ |
| 1511 | ␊ |
| 1512 | for ( map = gDiskBVMap; map; map = map->next ) {␊ |
| 1513 | if ( biosdev == map->biosdev ) {␊ |
| 1514 | count = map->bvrcnt;␊ |
| 1515 | break;␊ |
| 1516 | }␊ |
| 1517 | }␊ |
| 1518 | ␊ |
| 1519 | if (map == NULL) {␊ |
| 1520 | bvr = diskScanGPTBootVolumes(biosdev, &count);␊ |
| 1521 | if (bvr == NULL) {␊ |
| 1522 | bvr = diskScanFDiskBootVolumes(biosdev, &count);␊ |
| 1523 | }␊ |
| 1524 | if (bvr == NULL) {␊ |
| 1525 | bvr = diskScanAPMBootVolumes(biosdev, &count);␊ |
| 1526 | }␊ |
| 1527 | if (bvr)␊ |
| 1528 | {␊ |
| 1529 | scanFSLevelBVRSettings(bvr);␊ |
| 1530 | }␊ |
| 1531 | } else {␊ |
| 1532 | bvr = map->bvr;␊ |
| 1533 | }␊ |
| 1534 | if (countPtr) *countPtr += count;␊ |
| 1535 | return bvr;␊ |
| 1536 | }␊ |
| 1537 | ␊ |
| 1538 | BVRef getBVChainForBIOSDev(int biosdev)␊ |
| 1539 | {␊ |
| 1540 | BVRef chain = NULL;␊ |
| 1541 | struct DiskBVMap * map = NULL;␊ |
| 1542 | ␊ |
| 1543 | for (map = gDiskBVMap; map; map = map->next)␊ |
| 1544 | {␊ |
| 1545 | if (map->biosdev == biosdev)␊ |
| 1546 | {␊ |
| 1547 | chain = map->bvr;␊ |
| 1548 | break;␊ |
| 1549 | }␊ |
| 1550 | }␊ |
| 1551 | ␊ |
| 1552 | return chain;␊ |
| 1553 | }␊ |
| 1554 | ␊ |
| 1555 | BVRef newFilteredBVChain(int minBIOSDev, int maxBIOSDev, unsigned int allowFlags, unsigned int denyFlags, int *count)␊ |
| 1556 | {␊ |
| 1557 | BVRef chain = NULL;␊ |
| 1558 | BVRef bvr = NULL;␊ |
| 1559 | BVRef newBVR = NULL;␊ |
| 1560 | BVRef prevBVR = NULL;␊ |
| 1561 | ␊ |
| 1562 | struct DiskBVMap * map = NULL;␊ |
| 1563 | int bvCount = 0;␊ |
| 1564 | ␊ |
| 1565 | const char *raw = 0;␊ |
| 1566 | char* val = 0;␊ |
| 1567 | int len;␊ |
| 1568 | ␊ |
| 1569 | getValueForKey(kHidePartition, &raw, &len, &bootInfo->bootConfig);␊ |
| 1570 | if(raw)␊ |
| 1571 | {␊ |
| 1572 | val = XMLDecode(raw); ␊ |
| 1573 | }␊ |
| 1574 | ␊ |
| 1575 | /*␊ |
| 1576 | * Traverse gDISKBVmap to get references for␊ |
| 1577 | * individual bvr chains of each drive.␊ |
| 1578 | */␊ |
| 1579 | for (map = gDiskBVMap; map; map = map->next)␊ |
| 1580 | {␊ |
| 1581 | for (bvr = map->bvr; bvr; bvr = bvr->next)␊ |
| 1582 | {␊ |
| 1583 | /*␊ |
| 1584 | * Save the last bvr.␊ |
| 1585 | */␊ |
| 1586 | if (newBVR) prevBVR = newBVR;␊ |
| 1587 | ␊ |
| 1588 | /*␊ |
| 1589 | * Allocate and copy the matched bvr entry into a new one.␊ |
| 1590 | */␊ |
| 1591 | newBVR = (BVRef) malloc(sizeof(*newBVR));␊ |
| 1592 | bcopy(bvr, newBVR, sizeof(*newBVR));␊ |
| 1593 | ␊ |
| 1594 | /*␊ |
| 1595 | * Adjust the new bvr's fields.␊ |
| 1596 | */␊ |
| 1597 | newBVR->next = NULL;␊ |
| 1598 | newBVR->filtered = true;␊ |
| 1599 | ␊ |
| 1600 | if ( (!allowFlags || newBVR->flags & allowFlags)␊ |
| 1601 | && (!denyFlags || !(newBVR->flags & denyFlags) )␊ |
| 1602 | && (newBVR->biosdev >= minBIOSDev && newBVR->biosdev <= maxBIOSDev)␊ |
| 1603 | )␊ |
| 1604 | newBVR->visible = true;␊ |
| 1605 | ␊ |
| 1606 | /* Looking for "Hide Partition" entries in 'hd(x,y)|uuid|"label" hd(m,n)|uuid|"label"' format␊ |
| 1607 | * to be able to hide foreign partitions from the boot menu.␊ |
| 1608 | */␊ |
| 1609 | if ( (newBVR->flags & kBVFlagForeignBoot) )␊ |
| 1610 | {␊ |
| 1611 | char *start, *next = val;␊ |
| 1612 | long len = 0; ␊ |
| 1613 | do␊ |
| 1614 | {␊ |
| 1615 | start = strbreak(next, &next, &len);␊ |
| 1616 | if(len && matchVolumeToString(newBVR, start, len) )␊ |
| 1617 | ␉ newBVR->visible = false;␊ |
| 1618 | }␊ |
| 1619 | while ( next && *next );␊ |
| 1620 | }␊ |
| 1621 | ␊ |
| 1622 | /*␊ |
| 1623 | * Use the first bvr entry as the starting chain pointer.␊ |
| 1624 | */␊ |
| 1625 | if (!chain)␊ |
| 1626 | chain = newBVR;␊ |
| 1627 | ␊ |
| 1628 | /*␊ |
| 1629 | * Update the previous bvr's link pointer to use the new memory area.␊ |
| 1630 | */␊ |
| 1631 | if (prevBVR)␊ |
| 1632 | prevBVR->next = newBVR;␊ |
| 1633 | ␊ |
| 1634 | if (newBVR->visible)␊ |
| 1635 | bvCount++;␊ |
| 1636 | }␊ |
| 1637 | }␊ |
| 1638 | ␊ |
| 1639 | #if DEBUG␊ |
| 1640 | for (bvr = chain; bvr; bvr = bvr->next)␊ |
| 1641 | {␊ |
| 1642 | printf(" bvr: %d, dev: %d, part: %d, flags: %d, vis: %d\n", bvr, bvr->biosdev, bvr->part_no, bvr->flags, bvr->visible);␊ |
| 1643 | }␊ |
| 1644 | printf("count: %d\n", bvCount);␊ |
| 1645 | getc();␊ |
| 1646 | #endif␊ |
| 1647 | ␊ |
| 1648 | *count = bvCount;␊ |
| 1649 | ␊ |
| 1650 | free(val); ␊ |
| 1651 | return chain;␊ |
| 1652 | }␊ |
| 1653 | ␊ |
| 1654 | int freeFilteredBVChain(const BVRef chain)␊ |
| 1655 | {␊ |
| 1656 | int ret = 1;␊ |
| 1657 | BVRef bvr = chain;␊ |
| 1658 | BVRef nextBVR = NULL;␊ |
| 1659 | ␊ |
| 1660 | while (bvr)␊ |
| 1661 | {␊ |
| 1662 | nextBVR = bvr->next;␊ |
| 1663 | ␊ |
| 1664 | if (bvr->filtered)␊ |
| 1665 | {␊ |
| 1666 | free(bvr);␊ |
| 1667 | }␊ |
| 1668 | else␊ |
| 1669 | {␊ |
| 1670 | ret = 0;␊ |
| 1671 | break;␊ |
| 1672 | }␊ |
| 1673 | ␊ |
| 1674 | bvr = nextBVR;␊ |
| 1675 | }␊ |
| 1676 | ␊ |
| 1677 | return ret;␊ |
| 1678 | }␊ |
| 1679 | ␊ |
| 1680 | //==========================================================================␊ |
| 1681 | ␊ |
| 1682 | static const struct NamedValue fdiskTypes[] =␊ |
| 1683 | {␊ |
| 1684 | { FDISK_NTFS, "Windows NTFS" },␊ |
| 1685 | ␉{ FDISK_DOS12, "Windows FAT12" },␊ |
| 1686 | ␉{ FDISK_DOS16B, "Windows FAT16" },␊ |
| 1687 | ␉{ FDISK_DOS16S, "Windows FAT16" },␊ |
| 1688 | ␉{ FDISK_DOS16SLBA, "Windows FAT16" },␊ |
| 1689 | ␉{ FDISK_SMALLFAT32, "Windows FAT32" },␊ |
| 1690 | ␉{ FDISK_FAT32, "Windows FAT32" },␊ |
| 1691 | { FDISK_LINUX, "Linux" },␊ |
| 1692 | { FDISK_UFS, "Apple UFS" },␊ |
| 1693 | { FDISK_HFS, "Apple HFS" },␊ |
| 1694 | { FDISK_BOOTER, "Apple Boot/UFS" },␊ |
| 1695 | { 0xCD, "CD-ROM" },␊ |
| 1696 | { 0x00, 0 } /* must be last */␊ |
| 1697 | };␊ |
| 1698 | ␊ |
| 1699 | //==========================================================================␊ |
| 1700 | ␊ |
| 1701 | bool matchVolumeToString( BVRef bvr, const char* match, long matchLen)␊ |
| 1702 | {␊ |
| 1703 | ␉char testStr[128];␊ |
| 1704 | ␊ |
| 1705 | ␉if ( !bvr || !match || !*match)␊ |
| 1706 | ␉␉return 0;␊ |
| 1707 | ␉␊ |
| 1708 | ␉if ( bvr->biosdev < 0x80 || bvr->biosdev >= 0x100 )␊ |
| 1709 | return 0;␊ |
| 1710 | ␊ |
| 1711 | // Try to match hd(x,y) first.␊ |
| 1712 | sprintf(testStr, "hd(%d,%d)", BIOS_DEV_UNIT(bvr), bvr->part_no);␊ |
| 1713 | if ( matchLen ? !strncmp(match, testStr, matchLen) : !strcmp(match, testStr) )␊ |
| 1714 | return true;␊ |
| 1715 | ␊ |
| 1716 | // Try to match volume UUID.␊ |
| 1717 | if ( bvr->fs_getuuid && bvr->fs_getuuid(bvr, testStr) == 0)␊ |
| 1718 | {␊ |
| 1719 | if( matchLen ? !strncmp(match, testStr, matchLen) : !strcmp(match, testStr) )␊ |
| 1720 | return true;␊ |
| 1721 | }␊ |
| 1722 | ␊ |
| 1723 | // Try to match volume label (always quoted).␊ |
| 1724 | if ( bvr->description )␊ |
| 1725 | {␊ |
| 1726 | bvr->description(bvr, testStr, sizeof(testStr)-1);␊ |
| 1727 | if( matchLen ? !strncmp(match, testStr, matchLen) : !strcmp(match, testStr) )␊ |
| 1728 | return true;␊ |
| 1729 | }␊ |
| 1730 | ␊ |
| 1731 | return false;␊ |
| 1732 | }␊ |
| 1733 | ␊ |
| 1734 | /* If Rename Partition has defined an alias, then extract it for description purpose.␊ |
| 1735 | * The format for the rename string is the following:␊ |
| 1736 | * hd(x,y)|uuid|"label" "alias";hd(m,n)|uuid|"label" "alias";etc...␊ |
| 1737 | */␊ |
| 1738 | ␊ |
| 1739 | bool getVolumeLabelAlias(BVRef bvr, char* str, long strMaxLen)␊ |
| 1740 | {␊ |
| 1741 | char *aliasList, *entryStart, *entryNext;␊ |
| 1742 | ␊ |
| 1743 | if ( !str || strMaxLen <= 0)␊ |
| 1744 | return false;␊ |
| 1745 | ␊ |
| 1746 | aliasList = XMLDecode(getStringForKey(kRenamePartition, &bootInfo->bootConfig));␊ |
| 1747 | if ( !aliasList )␊ |
| 1748 | return false;␊ |
| 1749 | ␊ |
| 1750 | for ( entryStart = entryNext = aliasList;␊ |
| 1751 | entryNext && *entryNext;␊ |
| 1752 | entryStart = entryNext )␊ |
| 1753 | {␊ |
| 1754 | char *volStart, *volEnd, *aliasStart;␊ |
| 1755 | long volLen, aliasLen;␊ |
| 1756 | ␊ |
| 1757 | // Delimit current entry␊ |
| 1758 | entryNext = strchr(entryStart, ';');␊ |
| 1759 | if ( entryNext )␊ |
| 1760 | {␊ |
| 1761 | *entryNext = '\0';␊ |
| 1762 | entryNext++;␊ |
| 1763 | }␊ |
| 1764 | ␊ |
| 1765 | volStart = strbreak(entryStart, &volEnd, &volLen);␊ |
| 1766 | if(!volLen)␊ |
| 1767 | continue;␊ |
| 1768 | ␊ |
| 1769 | aliasStart = strbreak(volEnd, 0, &aliasLen);␊ |
| 1770 | if(!aliasLen)␊ |
| 1771 | continue;␊ |
| 1772 | ␊ |
| 1773 | if ( matchVolumeToString(bvr, volStart, volLen) )␊ |
| 1774 | { ␊ |
| 1775 | strncat(str, aliasStart, min(strMaxLen, aliasLen));␊ |
| 1776 | free(aliasList);␊ |
| 1777 | ␊ |
| 1778 | return true;␊ |
| 1779 | }␊ |
| 1780 | }␊ |
| 1781 | ␊ |
| 1782 | free(aliasList);␊ |
| 1783 | return false;␊ |
| 1784 | }␊ |
| 1785 | ␊ |
| 1786 | void getBootVolumeDescription( BVRef bvr, char * str, long strMaxLen, bool useDeviceDescription )␊ |
| 1787 | {␊ |
| 1788 | unsigned char type;␊ |
| 1789 | char *p = str;␊ |
| 1790 | ␊ |
| 1791 | if(!bvr || !p || strMaxLen <= 0)␊ |
| 1792 | return;␊ |
| 1793 | ␊ |
| 1794 | type = (unsigned char) bvr->part_type;␊ |
| 1795 | ␉␊ |
| 1796 | if (useDeviceDescription)␊ |
| 1797 | {␊ |
| 1798 | int len = getDeviceDescription(bvr, str);␊ |
| 1799 | if(len >= strMaxLen)␊ |
| 1800 | return;␊ |
| 1801 | ␊ |
| 1802 | strcpy(str + len, " ");␊ |
| 1803 | len++;␊ |
| 1804 | strMaxLen -= len;␊ |
| 1805 | p += len;␊ |
| 1806 | }␊ |
| 1807 | ␉␊ |
| 1808 | /* See if a partition rename is preferred */␊ |
| 1809 | if(getVolumeLabelAlias(bvr, p, strMaxLen)) {␊ |
| 1810 | strncpy(bvr->label, p, strMaxLen); ␊ |
| 1811 | return; // we're done here no need to seek for real name␊ |
| 1812 | }␊ |
| 1813 | ␊ |
| 1814 | //␊ |
| 1815 | // Get the volume label using filesystem specific functions␊ |
| 1816 | // or use the alternate volume label if available.␊ |
| 1817 | //␊ |
| 1818 | ␉if (*bvr->altlabel != '\0')␊ |
| 1819 | strncpy(p, bvr->altlabel, strMaxLen);␊ |
| 1820 | ␉else if (bvr->description)␊ |
| 1821 | bvr->description(bvr, p, strMaxLen);␊ |
| 1822 | ␊ |
| 1823 | if (*p == '\0') {␊ |
| 1824 | const char * name = getNameForValue( fdiskTypes, type );␊ |
| 1825 | if (name == NULL) {␊ |
| 1826 | name = bvr->type_name;␊ |
| 1827 | }␊ |
| 1828 | if (name == NULL) {␊ |
| 1829 | sprintf(p, "TYPE %02x", type);␊ |
| 1830 | } else {␊ |
| 1831 | strncpy(p, name, strMaxLen);␊ |
| 1832 | }␊ |
| 1833 | }␊ |
| 1834 | ␊ |
| 1835 | // Set the devices label␊ |
| 1836 | sprintf(bvr->label, p);␊ |
| 1837 | }␊ |
| 1838 | ␊ |
| 1839 | //==========================================================================␊ |
| 1840 | int readBootSector( int biosdev, unsigned int secno, void * buffer )␊ |
| 1841 | {␊ |
| 1842 | struct disk_blk0 * bootSector = (struct disk_blk0 *) buffer;␊ |
| 1843 | int error;␊ |
| 1844 | ␊ |
| 1845 | if ( bootSector == NULL )␊ |
| 1846 | {␊ |
| 1847 | if ( gBootSector == NULL )␊ |
| 1848 | {␊ |
| 1849 | gBootSector = (struct disk_blk0 *) malloc(sizeof(*gBootSector));␊ |
| 1850 | if ( gBootSector == NULL ) return -1;␊ |
| 1851 | }␊ |
| 1852 | bootSector = gBootSector;␊ |
| 1853 | }␊ |
| 1854 | ␊ |
| 1855 | error = readBytes( biosdev, secno, 0, BPS, bootSector );␊ |
| 1856 | if ( error || bootSector->signature != DISK_SIGNATURE )␊ |
| 1857 | return -1;␊ |
| 1858 | ␊ |
| 1859 | return 0;␊ |
| 1860 | }␊ |
| 1861 | ␊ |
| 1862 | /*␊ |
| 1863 | * Format of boot1f32 block.␊ |
| 1864 | */␊ |
| 1865 | ␊ |
| 1866 | #define BOOT1F32_MAGIC "BOOT "␊ |
| 1867 | #define BOOT1F32_MAGICLEN 11␊ |
| 1868 | ␊ |
| 1869 | struct disk_boot1f32_blk {␊ |
| 1870 | unsigned char init[3];␊ |
| 1871 | unsigned char fsheader[87];␊ |
| 1872 | unsigned char magic[BOOT1F32_MAGICLEN];␊ |
| 1873 | unsigned char bootcode[409];␊ |
| 1874 | unsigned short signature;␊ |
| 1875 | };␊ |
| 1876 | ␊ |
| 1877 | int testFAT32EFIBootSector( int biosdev, unsigned int secno, void * buffer )␊ |
| 1878 | {␊ |
| 1879 | struct disk_boot1f32_blk * bootSector = (struct disk_boot1f32_blk *) buffer;␊ |
| 1880 | int error;␊ |
| 1881 | ␊ |
| 1882 | if ( bootSector == NULL )␊ |
| 1883 | {␊ |
| 1884 | if ( gBootSector == NULL )␊ |
| 1885 | {␊ |
| 1886 | gBootSector = (struct disk_blk0 *) malloc(sizeof(*gBootSector));␊ |
| 1887 | if ( gBootSector == NULL ) return -1;␊ |
| 1888 | }␊ |
| 1889 | bootSector = (struct disk_boot1f32_blk *) gBootSector;␊ |
| 1890 | }␊ |
| 1891 | ␊ |
| 1892 | error = readBytes( biosdev, secno, 0, BPS, bootSector );␊ |
| 1893 | if ( error || bootSector->signature != DISK_SIGNATURE␊ |
| 1894 | || strncmp((const char *)bootSector->magic, BOOT1F32_MAGIC, BOOT1F32_MAGICLEN) )␊ |
| 1895 | return -1;␊ |
| 1896 | ␊ |
| 1897 | return 0;␊ |
| 1898 | }␊ |
| 1899 | ␊ |
| 1900 | //==========================================================================␊ |
| 1901 | // Handle seek request from filesystem modules.␊ |
| 1902 | ␊ |
| 1903 | void diskSeek( BVRef bvr, long long position )␊ |
| 1904 | {␊ |
| 1905 | bvr->fs_boff = position / BPS;␊ |
| 1906 | bvr->fs_byteoff = position % BPS;␊ |
| 1907 | }␊ |
| 1908 | ␊ |
| 1909 | //==========================================================================␊ |
| 1910 | // Handle read request from filesystem modules.␊ |
| 1911 | ␊ |
| 1912 | int diskRead( BVRef bvr, long addr, long length )␊ |
| 1913 | {␊ |
| 1914 | return readBytes( bvr->biosdev,␊ |
| 1915 | bvr->fs_boff + bvr->part_boff,␊ |
| 1916 | bvr->fs_byteoff,␊ |
| 1917 | length,␊ |
| 1918 | (void *) addr );␊ |
| 1919 | }␊ |
| 1920 | ␊ |
| 1921 | int rawDiskRead( BVRef bvr, unsigned int secno, void *buffer, unsigned int len )␊ |
| 1922 | {␊ |
| 1923 | int secs;␊ |
| 1924 | unsigned char *cbuf = (unsigned char *)buffer;␊ |
| 1925 | unsigned int copy_len;␊ |
| 1926 | int rc;␊ |
| 1927 | ␊ |
| 1928 | if ((len & (BPS-1)) != 0) {␊ |
| 1929 | error("raw disk read not sector aligned");␊ |
| 1930 | return -1;␊ |
| 1931 | }␊ |
| 1932 | secno += bvr->part_boff;␊ |
| 1933 | ␊ |
| 1934 | cache_valid = false;␊ |
| 1935 | ␊ |
| 1936 | while (len > 0) {␊ |
| 1937 | secs = len / BPS;␊ |
| 1938 | if (secs > N_CACHE_SECS) secs = N_CACHE_SECS;␊ |
| 1939 | copy_len = secs * BPS;␊ |
| 1940 | ␊ |
| 1941 | //printf("rdr: ebiosread(%d, %d, %d)\n", bvr->biosdev, secno, secs);␊ |
| 1942 | if ((rc = ebiosread(bvr->biosdev, secno, secs)) != 0) {␊ |
| 1943 | /* Ignore corrected ECC errors */␊ |
| 1944 | if (rc != ECC_CORRECTED_ERR) {␊ |
| 1945 | error(" EBIOS read error: %s\n", bios_error(rc), rc);␊ |
| 1946 | error(" Block %d Sectors %d\n", secno, secs);␊ |
| 1947 | return rc;␊ |
| 1948 | }␊ |
| 1949 | }␊ |
| 1950 | bcopy( trackbuf, cbuf, copy_len );␊ |
| 1951 | len -= copy_len;␊ |
| 1952 | cbuf += copy_len;␊ |
| 1953 | secno += secs;␊ |
| 1954 | spinActivityIndicator(secs);␊ |
| 1955 | }␊ |
| 1956 | ␊ |
| 1957 | return 0;␊ |
| 1958 | }␊ |
| 1959 | ␊ |
| 1960 | int rawDiskWrite( BVRef bvr, unsigned int secno, void *buffer, unsigned int len )␊ |
| 1961 | {␊ |
| 1962 | int secs;␊ |
| 1963 | unsigned char *cbuf = (unsigned char *)buffer;␊ |
| 1964 | unsigned int copy_len;␊ |
| 1965 | int rc;␊ |
| 1966 | ␊ |
| 1967 | if ((len & (BPS-1)) != 0) {␊ |
| 1968 | error("raw disk write not sector aligned");␊ |
| 1969 | return -1;␊ |
| 1970 | }␊ |
| 1971 | secno += bvr->part_boff;␊ |
| 1972 | ␊ |
| 1973 | cache_valid = false;␊ |
| 1974 | ␊ |
| 1975 | while (len > 0) {␊ |
| 1976 | secs = len / BPS;␊ |
| 1977 | if (secs > N_CACHE_SECS) secs = N_CACHE_SECS;␊ |
| 1978 | copy_len = secs * BPS;␊ |
| 1979 | ␊ |
| 1980 | bcopy( cbuf, trackbuf, copy_len );␊ |
| 1981 | //printf("rdr: ebioswrite(%d, %d, %d)\n", bvr->biosdev, secno, secs);␊ |
| 1982 | if ((rc = ebioswrite(bvr->biosdev, secno, secs)) != 0) {␊ |
| 1983 | error(" EBIOS write error: %s\n", bios_error(rc), rc);␊ |
| 1984 | error(" Block %d Sectors %d\n", secno, secs);␊ |
| 1985 | return rc;␊ |
| 1986 | }␊ |
| 1987 | len -= copy_len;␊ |
| 1988 | cbuf += copy_len;␊ |
| 1989 | secno += secs;␊ |
| 1990 | spinActivityIndicator(secs);␊ |
| 1991 | }␊ |
| 1992 | ␊ |
| 1993 | return 0;␊ |
| 1994 | }␊ |
| 1995 | ␊ |
| 1996 | ␊ |
| 1997 | int diskIsCDROM(BVRef bvr)␊ |
| 1998 | {␊ |
| 1999 | struct driveInfo di;␊ |
| 2000 | ␊ |
| 2001 | if (getDriveInfo(bvr->biosdev, &di) == 0 && di.no_emulation) {␊ |
| 2002 | ␉return 1;␊ |
| 2003 | }␊ |
| 2004 | return 0;␊ |
| 2005 | }␊ |
| 2006 | ␊ |
| 2007 | int biosDevIsCDROM(int biosdev)␊ |
| 2008 | {␊ |
| 2009 | struct driveInfo di;␊ |
| 2010 | ␊ |
| 2011 | if (getDriveInfo(biosdev, &di) == 0 && di.no_emulation)␊ |
| 2012 | {␊ |
| 2013 | ␉return 1;␊ |
| 2014 | }␊ |
| 2015 | return 0;␊ |
| 2016 | }␊ |
| 2017 | |
