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