Root/
Source at commit 1018 created 13 years 1 month ago. By cosmo1t, smbios_getters (added a DBG for validating the index in order to make sure we were mapped to spd.c's slot platform.h -- fixed a type on a comment spd.c moved the check && Platform.DMI.DIMM[i] assignment into the if check for spd validity | |
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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 | * Copyright (c) 1988 Carnegie-Mellon University␊ |
29 | * Copyright (c) 1987 Carnegie-Mellon University␊ |
30 | * All rights reserved. The CMU software License Agreement specifies␊ |
31 | * the terms and conditions for use and redistribution.␊ |
32 | *␊ |
33 | */␊ |
34 | /*␊ |
35 | * HISTORY␊ |
36 | * Revision 2.3 88/08/08 13:47:07 rvb␊ |
37 | * Allocate buffers dynamically vs statically.␊ |
38 | * Now b[i] and i_fs and i_buf, are allocated dynamically.␊ |
39 | * boot_calloc(size) allocates and zeros a buffer rounded to a NPG␊ |
40 | * boundary.␊ |
41 | * Generalize boot spec to allow, xx()/mach, xx(n,[a..h])/mach,␊ |
42 | * xx([a..h])/mach, ...␊ |
43 | * Also default "xx" if unspecified and alloc just "/mach",␊ |
44 | * where everything is defaulted␊ |
45 | * Add routine, ptol(), to parse partition letters.␊ |
46 | *␊ |
47 | */␊ |
48 | ␊ |
49 | /*␊ |
50 | * Copyright (c) 1982, 1986 Regents of the University of California.␊ |
51 | * All rights reserved. The Berkeley software License Agreement␊ |
52 | * specifies the terms and conditions for redistribution.␊ |
53 | *␊ |
54 | *␉@(#)sys.c␉7.1 (Berkeley) 6/5/86␊ |
55 | */␊ |
56 | ␊ |
57 | /* Copyright 2007 VMware Inc.␊ |
58 | "Preboot" ramdisk support added by David Elliott␊ |
59 | */␊ |
60 | ␊ |
61 | #include <AvailabilityMacros.h>␊ |
62 | ␊ |
63 | #include "libsaio.h"␊ |
64 | #include "boot.h"␊ |
65 | #include "bootstruct.h"␊ |
66 | #include "disk.h"␊ |
67 | #include "ramdisk.h"␊ |
68 | #include "xml.h"␊ |
69 | #if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5␊ |
70 | # include <Kernel/libkern/crypto/md5.h>␊ |
71 | #else␊ |
72 | # include <sys/md5.h>␊ |
73 | #endif␊ |
74 | #include <uuid/uuid.h>␊ |
75 | #if 0 /* No OS X release has ever included this. */␊ |
76 | #include <Kernel/uuid/namespace.h>␊ |
77 | #else␊ |
78 | /* copied from uuid/namespace.h, just like BootX's fs.c does. */␊ |
79 | UUID_DEFINE( kFSUUIDNamespaceSHA1, 0xB3, 0xE2, 0x0F, 0x39, 0xF2, 0x92, 0x11, 0xD6, 0x97, 0xA4, 0x00, 0x30, 0x65, 0x43, 0xEC, 0xAC );␊ |
80 | #endif␊ |
81 | ␊ |
82 | #ifdef UNUSED␊ |
83 | extern int multiboot_partition;␊ |
84 | extern int multiboot_partition_set;␊ |
85 | #endif␊ |
86 | ␊ |
87 | struct devsw {␊ |
88 | const char * name;␊ |
89 | // size increased from char to short to handle non-BIOS internal devices␊ |
90 | unsigned short biosdev;␊ |
91 | int type;␊ |
92 | };␊ |
93 | ␊ |
94 | // Device entries must be ordered by bios device numbers. ␊ |
95 | static struct devsw devsw[] =␊ |
96 | {␊ |
97 | { "hd", 0x80, kBIOSDevTypeHardDrive }, /* DEV_HD */␊ |
98 | { "en", 0xE0, kBIOSDevTypeNetwork }, /* DEV_EN */␊ |
99 | { "rd", 0x100, kBIOSDevTypeHardDrive },␊ |
100 | { "bt", 0x101, kBIOSDevTypeHardDrive }, // turbo - type for booter partition␊ |
101 | { 0, 0 }␊ |
102 | };␊ |
103 | ␊ |
104 | // Pseudo BIOS devices␊ |
105 | enum {␊ |
106 | ␉kPseudoBIOSDevRAMDisk = 0x100,␊ |
107 | ␉kPseudoBIOSDevBooter = 0x101␊ |
108 | };␊ |
109 | ␊ |
110 | /*␊ |
111 | * Max number of file descriptors.␊ |
112 | */␊ |
113 | #define NFILES 6␊ |
114 | ␊ |
115 | static struct iob iob[NFILES];␊ |
116 | ␊ |
117 | void * gFSLoadAddress = 0;␊ |
118 | ␊ |
119 | // Turbo - save what we think is our original BIOS boot volume if we have one 0xab␊ |
120 | BVRef gBIOSBootVolume = NULL;␊ |
121 | BVRef gBootVolume;␊ |
122 | ␊ |
123 | //static BVRef getBootVolumeRef( const char * path, const char ** outPath );␊ |
124 | static BVRef newBootVolumeRef( int biosdev, int partno );␊ |
125 | ␊ |
126 | //==========================================================================␊ |
127 | // LoadVolumeFile - LOW-LEVEL FILESYSTEM FUNCTION.␊ |
128 | // Load the specified file from the specified volume␊ |
129 | // to the load buffer at LOAD_ADDR.␊ |
130 | // If the file is fat, load only the i386 portion.␊ |
131 | ␊ |
132 | long LoadVolumeFile(BVRef bvr, const char *filePath)␊ |
133 | {␊ |
134 | long fileSize;␊ |
135 | ␊ |
136 | // Read file into load buffer. The data in the load buffer will be␊ |
137 | // overwritten by the next LoadFile() call.␊ |
138 | ␊ |
139 | gFSLoadAddress = (void *) LOAD_ADDR;␊ |
140 | ␊ |
141 | fileSize = bvr->fs_loadfile(bvr, (char *)filePath);␊ |
142 | ␊ |
143 | // Return the size of the file, or -1 if load failed.␊ |
144 | ␊ |
145 | return fileSize;␊ |
146 | }␊ |
147 | ␊ |
148 | //==========================================================================␊ |
149 | // LoadFile - LOW-LEVEL FILESYSTEM FUNCTION.␊ |
150 | // Load the specified file to the load buffer at LOAD_ADDR.␊ |
151 | // If the file is fat, load only the i386 portion.␊ |
152 | ␊ |
153 | long LoadFile(const char * fileSpec)␊ |
154 | {␊ |
155 | const char * filePath;␊ |
156 | BVRef bvr;␊ |
157 | ␊ |
158 | // Resolve the boot volume from the file spec.␊ |
159 | ␊ |
160 | if ((bvr = getBootVolumeRef(fileSpec, &filePath)) == NULL)␊ |
161 | return -1;␊ |
162 | ␊ |
163 | return LoadVolumeFile(bvr, filePath);␊ |
164 | }␊ |
165 | ␊ |
166 | long ReadFileAtOffset(const char * fileSpec, void *buffer, uint64_t offset, uint64_t length)␊ |
167 | {␊ |
168 | const char *filePath;␊ |
169 | BVRef bvr;␊ |
170 | ␊ |
171 | if ((bvr = getBootVolumeRef(fileSpec, &filePath)) == NULL)␊ |
172 | return -1;␊ |
173 | ␊ |
174 | if (bvr->fs_readfile == NULL)␊ |
175 | return -1;␊ |
176 | ␊ |
177 | return bvr->fs_readfile(bvr, (char *)filePath, buffer, offset, length);␊ |
178 | }␊ |
179 | ␊ |
180 | long LoadThinFatFile(const char *fileSpec, void **binary)␊ |
181 | {␊ |
182 | const char *filePath;␊ |
183 | FSReadFile readFile;␊ |
184 | BVRef bvr;␊ |
185 | unsigned long length, length2;␊ |
186 | ␊ |
187 | // Resolve the boot volume from the file spec.␊ |
188 | ␊ |
189 | if ((bvr = getBootVolumeRef(fileSpec, &filePath)) == NULL)␊ |
190 | return -1;␊ |
191 | ␊ |
192 | *binary = (void *)kLoadAddr;␊ |
193 | ␊ |
194 | // Read file into load buffer. The data in the load buffer will be␊ |
195 | // overwritten by the next LoadFile() call.␊ |
196 | ␊ |
197 | gFSLoadAddress = (void *) LOAD_ADDR;␊ |
198 | ␊ |
199 | readFile = bvr->fs_readfile;␊ |
200 | ␊ |
201 | if (readFile != NULL) {␊ |
202 | // Read the first 4096 bytes (fat header)␊ |
203 | length = readFile(bvr, (char *)filePath, *binary, 0, 0x1000);␊ |
204 | if (length > 0) {␊ |
205 | if (ThinFatFile(binary, &length) == 0) {␊ |
206 | ␉␉␉␉if (length == 0)␊ |
207 | ␉␉␉␉␉return 0;␊ |
208 | // We found a fat binary; read only the thin part␊ |
209 | length = readFile(bvr, (char *)filePath,␊ |
210 | (void *)kLoadAddr, (unsigned long)(*binary) - kLoadAddr, length);␊ |
211 | *binary = (void *)kLoadAddr;␊ |
212 | } else {␊ |
213 | // Not a fat binary; read the rest of the file␊ |
214 | length2 = readFile(bvr, (char *)filePath, (void *)(kLoadAddr + length), length, 0);␊ |
215 | if (length2 == -1) return -1;␊ |
216 | length += length2;␊ |
217 | }␊ |
218 | }␊ |
219 | } else {␊ |
220 | length = bvr->fs_loadfile(bvr, (char *)filePath);␊ |
221 | if (length > 0) {␊ |
222 | ThinFatFile(binary, &length);␊ |
223 | }␊ |
224 | }␊ |
225 | ␊ |
226 | return length;␊ |
227 | }␊ |
228 | ␊ |
229 | #if UNUSED␊ |
230 | long GetFSUUID(char *spec, char *uuidStr)␊ |
231 | {␊ |
232 | BVRef bvr;␊ |
233 | long rval = -1;␊ |
234 | const char *devSpec;␊ |
235 | ␊ |
236 | if ((bvr = getBootVolumeRef(spec, &devSpec)) == NULL)␊ |
237 | return -1;␊ |
238 | ␊ |
239 | if(bvr->fs_getuuid)␊ |
240 | rval = bvr->fs_getuuid(bvr, uuidStr);␊ |
241 | ␊ |
242 | return rval;␊ |
243 | }␊ |
244 | #endif␊ |
245 | ␊ |
246 | // filesystem-specific getUUID functions call this shared string generator␊ |
247 | long CreateUUIDString(uint8_t uubytes[], int nbytes, char *uuidStr)␊ |
248 | {␊ |
249 | unsigned fmtbase, fmtidx, i;␊ |
250 | uint8_t uuidfmt[] = { 4, 2, 2, 2, 6 };␊ |
251 | char *p = uuidStr;␊ |
252 | MD5_CTX md5c;␊ |
253 | uint8_t mdresult[16];␊ |
254 | ␊ |
255 | bzero(mdresult, sizeof(mdresult));␊ |
256 | ␊ |
257 | // just like AppleFileSystemDriver␊ |
258 | MD5Init(&md5c);␊ |
259 | MD5Update(&md5c, kFSUUIDNamespaceSHA1, sizeof(kFSUUIDNamespaceSHA1));␊ |
260 | MD5Update(&md5c, uubytes, nbytes);␊ |
261 | MD5Final(mdresult, &md5c);␊ |
262 | ␊ |
263 | // this UUID has been made version 3 style (i.e. via namespace)␊ |
264 | // see "-uuid-urn-" IETF draft (which otherwise copies byte for byte)␊ |
265 | mdresult[6] = 0x30 | ( mdresult[6] & 0x0F );␊ |
266 | mdresult[8] = 0x80 | ( mdresult[8] & 0x3F );␊ |
267 | ␊ |
268 | ␊ |
269 | // generate the text: e.g. 5EB1869F-C4FA-3502-BDEB-3B8ED5D87292␊ |
270 | i = 0; fmtbase = 0;␊ |
271 | for(fmtidx = 0; fmtidx < sizeof(uuidfmt); fmtidx++) {␊ |
272 | for(i=0; i < uuidfmt[fmtidx]; i++) {␊ |
273 | uint8_t byte = mdresult[fmtbase+i];␊ |
274 | char nib;␊ |
275 | ␊ |
276 | nib = byte >> 4;␊ |
277 | *p = nib + '0'; // 0x4 -> '4'␊ |
278 | if(*p > '9') *p = (nib - 9 + ('A'-1)); // 0xB -> 'B'␊ |
279 | p++;␊ |
280 | ␊ |
281 | nib = byte & 0xf;␊ |
282 | *p = nib + '0'; // 0x4 -> '4'␊ |
283 | if(*p > '9') *p = (nib - 9 + ('A'-1)); // 0xB -> 'B'␊ |
284 | p++;␊ |
285 | ␊ |
286 | }␊ |
287 | fmtbase += i;␊ |
288 | if(fmtidx < sizeof(uuidfmt)-1)␊ |
289 | *(p++) = '-';␊ |
290 | else␊ |
291 | *p = '\0';␊ |
292 | }␊ |
293 | ␊ |
294 | return 0;␊ |
295 | }␊ |
296 | ␊ |
297 | ␊ |
298 | //==========================================================================␊ |
299 | // GetDirEntry - LOW-LEVEL FILESYSTEM FUNCTION.␊ |
300 | // Fetch the next directory entry for the given directory.␊ |
301 | ␊ |
302 | long GetDirEntry(const char * dirSpec, long long * dirIndex, const char ** name, ␊ |
303 | long * flags, long * time)␊ |
304 | {␊ |
305 | const char * dirPath;␊ |
306 | BVRef bvr;␊ |
307 | ␊ |
308 | // Resolve the boot volume from the dir spec.␊ |
309 | ␊ |
310 | if ((bvr = getBootVolumeRef(dirSpec, &dirPath)) == NULL)␊ |
311 | return -1;␊ |
312 | ␊ |
313 | // Return 0 on success, or -1 if there are no additional entries.␊ |
314 | ␊ |
315 | return bvr->fs_getdirentry( bvr,␊ |
316 | /* dirPath */ (char *)dirPath,␊ |
317 | /* dirIndex */ dirIndex,␊ |
318 | /* dirEntry */ (char **)name, flags, time, 0, 0 );␊ |
319 | }␊ |
320 | ␊ |
321 | //==========================================================================␊ |
322 | // GetFileInfo - LOW-LEVEL FILESYSTEM FUNCTION.␊ |
323 | // Get attributes for the specified file.␊ |
324 | ␊ |
325 | static char* gMakeDirSpec;␊ |
326 | ␊ |
327 | long GetFileInfo(const char * dirSpec, const char * name,␊ |
328 | long * flags, long * time)␊ |
329 | {␊ |
330 | long long index = 0;␊ |
331 | const char * entryName;␊ |
332 | ␊ |
333 | if (gMakeDirSpec == 0)␊ |
334 | gMakeDirSpec = (char *)malloc(1024);␊ |
335 | ␊ |
336 | if (!dirSpec) {␊ |
337 | long idx, len;␊ |
338 | ␊ |
339 | len = strlen(name);␊ |
340 | ␊ |
341 | for (idx = len; idx && (name[idx] != '/' && name[idx] != '\\'); idx--) {}␊ |
342 | if (idx == 0) {␊ |
343 | gMakeDirSpec[0] = '/';␊ |
344 | gMakeDirSpec[1] = '\0';␊ |
345 | } else {␊ |
346 | idx++;␊ |
347 | strncpy(gMakeDirSpec, name, idx);␊ |
348 | name += idx;␊ |
349 | }␊ |
350 | dirSpec = gMakeDirSpec;␊ |
351 | }␊ |
352 | ␊ |
353 | while (GetDirEntry(dirSpec, &index, &entryName, flags, time) == 0)␊ |
354 | {␊ |
355 | if (strcmp(entryName, name) == 0)␊ |
356 | return 0; // success␊ |
357 | }␊ |
358 | return -1; // file not found␊ |
359 | }␊ |
360 | ␊ |
361 | long GetFileBlock(const char *fileSpec, unsigned long long *firstBlock)␊ |
362 | {␊ |
363 | const char * filePath;␊ |
364 | BVRef bvr;␊ |
365 | ␊ |
366 | // Resolve the boot volume from the file spec.␊ |
367 | ␊ |
368 | if ((bvr = getBootVolumeRef(fileSpec, &filePath)) == NULL) {␊ |
369 | printf("Boot volume for '%s' is bogus\n", fileSpec);␊ |
370 | return -1;␊ |
371 | }␊ |
372 | ␊ |
373 | return bvr->fs_getfileblock(bvr, (char *)filePath, firstBlock);␊ |
374 | }␊ |
375 | ␊ |
376 | //==========================================================================␊ |
377 | // GetFreeFD()␊ |
378 | ␊ |
379 | static int GetFreeFd(void)␊ |
380 | {␊ |
381 | ␉int␉fd;␊ |
382 | ␊ |
383 | ␉// Locate a free descriptor slot.␊ |
384 | ␉for (fd = 0; fd < NFILES; fd++) {␊ |
385 | ␉␉if (iob[fd].i_flgs == 0) {␊ |
386 | ␉␉␉return fd;␊ |
387 | ␉ ␉}␊ |
388 | ␉}␊ |
389 | ␉stop("Out of file descriptors (MAX = %d)", NFILES);␊ |
390 | ␉// not reached␊ |
391 | ␉return -1;␊ |
392 | }␊ |
393 | ␊ |
394 | //==========================================================================␊ |
395 | // iob_from_fdesc()␊ |
396 | //␊ |
397 | // Return a pointer to an allocated 'iob' based on the file descriptor␊ |
398 | // provided. Returns NULL if the file descriptor given is invalid.␊ |
399 | ␊ |
400 | static struct iob * iob_from_fdesc(int fdesc)␊ |
401 | {␊ |
402 | register struct iob * io;␊ |
403 | ␊ |
404 | if (fdesc < 0 || fdesc >= NFILES ||␊ |
405 | ((io = &iob[fdesc])->i_flgs & F_ALLOC) == 0)␊ |
406 | return NULL;␊ |
407 | else␊ |
408 | return io;␊ |
409 | }␊ |
410 | ␊ |
411 | //==========================================================================␊ |
412 | // openmem()␊ |
413 | ␊ |
414 | int openmem(char * buf, int len)␊ |
415 | {␊ |
416 | int fdesc;␊ |
417 | struct iob * io;␊ |
418 | ␊ |
419 | fdesc = GetFreeFd();␊ |
420 | io = &iob[fdesc];␊ |
421 | bzero(io, sizeof(*io));␊ |
422 | ␊ |
423 | // Mark the descriptor as taken. Set the F_MEM flag to indicate␊ |
424 | // that the file buffer is provided by the caller.␊ |
425 | ␊ |
426 | io->i_flgs = F_ALLOC | F_MEM;␊ |
427 | io->i_buf = buf;␊ |
428 | io->i_filesize = len;␊ |
429 | ␊ |
430 | return fdesc;␊ |
431 | }␊ |
432 | ␊ |
433 | //==========================================================================␊ |
434 | // open() - Open the file specified by 'path' for reading.␊ |
435 | ␊ |
436 | static int open_bvr(BVRef bvr, const char *filePath, int flags)␊ |
437 | {␊ |
438 | ␉struct iob␉*io;␊ |
439 | ␉int␉␉fdesc;␊ |
440 | ␉int␉␉i;␊ |
441 | ␊ |
442 | ␉if (bvr == NULL) {␊ |
443 | ␉␉return -1;␊ |
444 | ␉}␊ |
445 | ␊ |
446 | ␉fdesc = GetFreeFd();␊ |
447 | ␉io = &iob[fdesc];␊ |
448 | ␉bzero(io, sizeof(*io));␊ |
449 | ␊ |
450 | ␉// Mark the descriptor as taken.␊ |
451 | ␉io->i_flgs = F_ALLOC;␊ |
452 | ␊ |
453 | ␉// Find the next available memory block in the download buffer.␊ |
454 | ␉io->i_buf = (char *) LOAD_ADDR;␊ |
455 | ␉for (i = 0; i < NFILES; i++) {␊ |
456 | ␉␉if ((iob[i].i_flgs != F_ALLOC) || (i == fdesc)) {␊ |
457 | ␉␉␉continue;␊ |
458 | ␉␉}␊ |
459 | ␉␉io->i_buf = max(iob[i].i_filesize + iob[i].i_buf, io->i_buf);␊ |
460 | ␉}␊ |
461 | ␊ |
462 | ␉// Load entire file into memory. Unnecessary open() calls must be avoided.␊ |
463 | ␉gFSLoadAddress = io->i_buf;␊ |
464 | ␉io->i_filesize = bvr->fs_loadfile(bvr, (char *)filePath);␊ |
465 | ␉if (io->i_filesize < 0) {␊ |
466 | ␉␉close(fdesc);␊ |
467 | ␉␉return -1;␊ |
468 | ␉}␊ |
469 | ␉return fdesc;␊ |
470 | }␊ |
471 | ␊ |
472 | int open(const char *path, int flags)␊ |
473 | {␊ |
474 | ␉const char␉*filepath;␊ |
475 | ␉BVRef␉␉bvr;␊ |
476 | ␊ |
477 | ␉// Resolve the boot volume from the file spec.␊ |
478 | ␉if ((bvr = getBootVolumeRef(path, &filepath)) != NULL) {␊ |
479 | ␉␉return open_bvr(bvr, filepath, flags);␊ |
480 | ␉}␊ |
481 | ␉return -1;␊ |
482 | }␊ |
483 | ␊ |
484 | int open_bvdev(const char *bvd, const char *path, int flags)␊ |
485 | {␊ |
486 | const struct devsw␉*dp;␊ |
487 | ␉const char␉␉*cp;␊ |
488 | ␉BVRef␉␉␉bvr;␊ |
489 | ␉int␉␉␉i;␊ |
490 | ␉int␉␉␉len;␊ |
491 | ␉int␉␉␉unit;␊ |
492 | ␉int␉␉␉partition;␊ |
493 | ␊ |
494 | ␉if ((i = open(path, flags)) >= 0) {␊ |
495 | ␉␉return i;␊ |
496 | ␉}␊ |
497 | ␊ |
498 | ␉if (bvd == NULL || (len = strlen(bvd)) < 2) {␊ |
499 | ␉␉return -1;␊ |
500 | ␉}␊ |
501 | ␊ |
502 | ␉for (dp=devsw; dp->name; dp++) {␊ |
503 | ␉␉if (bvd[0] == dp->name[0] && bvd[1] == dp->name[1]) {␊ |
504 | ␉␉␉unit = 0;␊ |
505 | ␉␉␉partition = 0;␊ |
506 | ␉␉␉/* get optional unit and partition */␊ |
507 | ␉␉␉if (len >= 5 && bvd[2] == '(') { /* min must be present xx(0) */␊ |
508 | ␉␉␉␉cp = &bvd[3];␊ |
509 | ␉␉␉␉i = 0;␊ |
510 | ␉␉␉␉while ((cp - path) < len && isdigit(*cp)) {␊ |
511 | ␉␉␉␉␉i = i * 10 + *cp++ - '0';␊ |
512 | ␉␉␉␉␉unit = i;␊ |
513 | ␉␉␉␉}␊ |
514 | ␉␉␉␉if (*cp++ == ',') {␊ |
515 | ␉␉␉␉␉i = 0;␊ |
516 | ␉␉␉␉␉while ((cp - path) < len && isdigit(*cp)) {␊ |
517 | ␉␉␉␉␉␉i = i * 10 + *cp++ - '0';␊ |
518 | ␉␉␉␉␉␉partition = i;␊ |
519 | ␉␉␉␉␉}␊ |
520 | ␉␉␉␉}␊ |
521 | ␉␉␉}␊ |
522 | ␉␉␉bvr = newBootVolumeRef(dp->biosdev + unit, partition);␊ |
523 | ␉␉␉return open_bvr(bvr, path, flags);␊ |
524 | ␉␉}␊ |
525 | }␊ |
526 | ␉return -1;␊ |
527 | }␊ |
528 | ␊ |
529 | //==========================================================================␊ |
530 | // close() - Close a file descriptor.␊ |
531 | ␊ |
532 | int close(int fdesc)␊ |
533 | {␊ |
534 | struct iob * io;␊ |
535 | ␊ |
536 | if ((io = iob_from_fdesc(fdesc)) == NULL)␊ |
537 | return (-1);␊ |
538 | ␊ |
539 | io->i_flgs = 0;␊ |
540 | ␊ |
541 | return 0;␊ |
542 | }␊ |
543 | ␊ |
544 | //==========================================================================␊ |
545 | // lseek() - Reposition the byte offset of the file descriptor from the␊ |
546 | // beginning of the file. Returns the relocated offset.␊ |
547 | ␊ |
548 | int b_lseek(int fdesc, int offset, int ptr)␊ |
549 | {␊ |
550 | struct iob * io;␊ |
551 | ␊ |
552 | if ((io = iob_from_fdesc(fdesc)) == NULL)␊ |
553 | return (-1);␊ |
554 | ␊ |
555 | io->i_offset = offset;␊ |
556 | ␊ |
557 | return offset;␊ |
558 | }␊ |
559 | ␊ |
560 | //==========================================================================␊ |
561 | // tell() - Returns the byte offset of the file descriptor.␊ |
562 | ␊ |
563 | int tell(int fdesc)␊ |
564 | {␊ |
565 | struct iob * io;␊ |
566 | ␊ |
567 | if ((io = iob_from_fdesc(fdesc)) == NULL)␊ |
568 | return 0;␊ |
569 | ␊ |
570 | return io->i_offset;␊ |
571 | }␊ |
572 | ␊ |
573 | //==========================================================================␊ |
574 | // read() - Read up to 'count' bytes of data from the file descriptor␊ |
575 | // into the buffer pointed to by buf.␊ |
576 | ␊ |
577 | int read(int fdesc, char * buf, int count)␊ |
578 | {␊ |
579 | struct iob * io;␊ |
580 | ␊ |
581 | if ((io = iob_from_fdesc(fdesc)) == NULL)␊ |
582 | return (-1);␊ |
583 | ␊ |
584 | if ((io->i_offset + count) > (unsigned int)io->i_filesize)␊ |
585 | count = io->i_filesize - io->i_offset;␊ |
586 | ␊ |
587 | if (count <= 0)␊ |
588 | return 0; // end of file␊ |
589 | ␊ |
590 | bcopy(io->i_buf + io->i_offset, buf, count);␊ |
591 | ␊ |
592 | io->i_offset += count;␊ |
593 | ␊ |
594 | return count;␊ |
595 | }␊ |
596 | ␊ |
597 | //==========================================================================␊ |
598 | // write() - Write up to 'count' bytes of data to the file descriptor␊ |
599 | // from the buffer pointed to by buf.␊ |
600 | ␊ |
601 | int write(int fdesc, const char * buf, int count)␊ |
602 | {␊ |
603 | struct iob * io;␊ |
604 | ␊ |
605 | if ((io = iob_from_fdesc(fdesc)) == NULL)␊ |
606 | return (-1);␊ |
607 | ␉␊ |
608 | if ((io->i_offset + count) > (unsigned int)io->i_filesize)␊ |
609 | count = io->i_filesize - io->i_offset;␊ |
610 | ␉␊ |
611 | if (count <= 0)␊ |
612 | return 0; // end of file␊ |
613 | ␉␊ |
614 | bcopy(buf, io->i_buf + io->i_offset, count);␊ |
615 | ␉␊ |
616 | io->i_offset += count;␊ |
617 | ␉␊ |
618 | return count;␊ |
619 | }␊ |
620 | ␊ |
621 | int writebyte(int fdesc, char value)␊ |
622 | {␊ |
623 | struct iob * io;␊ |
624 | ␊ |
625 | if ((io = iob_from_fdesc(fdesc)) == NULL)␊ |
626 | return (-1);␊ |
627 | ␉␊ |
628 | if ((io->i_offset + 1) > (unsigned int)io->i_filesize)␊ |
629 | return 0; // end of file␊ |
630 | ␉␊ |
631 | io->i_buf[io->i_offset++] = value;␊ |
632 | ␉␊ |
633 | return 1;␊ |
634 | }␊ |
635 | ␊ |
636 | int writeint(int fdesc, int value)␊ |
637 | {␊ |
638 | struct iob * io;␊ |
639 | ␊ |
640 | if ((io = iob_from_fdesc(fdesc)) == NULL)␊ |
641 | return (-1);␊ |
642 | ␉␊ |
643 | if ((io->i_offset + 4) > (unsigned int)io->i_filesize)␊ |
644 | return 0; // end of file␊ |
645 | ␉␊ |
646 | bcopy(&value, io->i_buf + io->i_offset, 4);␊ |
647 | ␉␊ |
648 | io->i_offset += 4;␊ |
649 | ␉␊ |
650 | return 4;␊ |
651 | }␊ |
652 | ␊ |
653 | //==========================================================================␊ |
654 | // file_size() - Returns the size of the file described by the file␊ |
655 | // descriptor.␊ |
656 | ␊ |
657 | int file_size(int fdesc)␊ |
658 | {␊ |
659 | struct iob * io;␊ |
660 | ␊ |
661 | if ((io = iob_from_fdesc(fdesc)) == 0)␊ |
662 | return 0;␊ |
663 | ␊ |
664 | return io->i_filesize;␊ |
665 | }␊ |
666 | ␊ |
667 | //==========================================================================␊ |
668 | ␊ |
669 | struct dirstuff * vol_opendir(BVRef bvr, const char * path)␊ |
670 | {␊ |
671 | struct dirstuff * dirp = 0;␊ |
672 | ␊ |
673 | dirp = (struct dirstuff *) malloc(sizeof(struct dirstuff));␊ |
674 | if (dirp == NULL)␊ |
675 | goto error;␊ |
676 | ␊ |
677 | dirp->dir_path = newString(path);␊ |
678 | if (dirp->dir_path == NULL)␊ |
679 | goto error;␊ |
680 | ␊ |
681 | dirp->dir_bvr = bvr;␊ |
682 | ␊ |
683 | return dirp;␊ |
684 | ␊ |
685 | error:␊ |
686 | closedir(dirp);␊ |
687 | return NULL;␊ |
688 | }␊ |
689 | ␊ |
690 | //==========================================================================␊ |
691 | ␊ |
692 | struct dirstuff * opendir(const char * path)␊ |
693 | {␊ |
694 | struct dirstuff * dirp = 0;␊ |
695 | const char * dirPath;␊ |
696 | BVRef bvr;␊ |
697 | ␊ |
698 | if ((bvr = getBootVolumeRef(path, &dirPath)) == NULL)␊ |
699 | goto error;␊ |
700 | ␊ |
701 | dirp = (struct dirstuff *) malloc(sizeof(struct dirstuff));␊ |
702 | if (dirp == NULL)␊ |
703 | goto error;␊ |
704 | ␊ |
705 | dirp->dir_path = newString(dirPath);␊ |
706 | if (dirp->dir_path == NULL)␊ |
707 | goto error;␊ |
708 | ␊ |
709 | dirp->dir_bvr = bvr;␊ |
710 | ␊ |
711 | return dirp;␊ |
712 | ␊ |
713 | error:␊ |
714 | closedir(dirp);␊ |
715 | return NULL;␊ |
716 | }␊ |
717 | ␊ |
718 | //==========================================================================␊ |
719 | ␊ |
720 | int closedir(struct dirstuff * dirp)␊ |
721 | {␊ |
722 | if (dirp) {␊ |
723 | if (dirp->dir_path) free(dirp->dir_path);␊ |
724 | free(dirp);␊ |
725 | }␊ |
726 | return 0;␊ |
727 | }␊ |
728 | ␊ |
729 | //==========================================================================␊ |
730 | ␊ |
731 | int readdir(struct dirstuff * dirp, const char ** name, long * flags,␊ |
732 | long * time)␊ |
733 | {␊ |
734 | return dirp->dir_bvr->fs_getdirentry( dirp->dir_bvr,␊ |
735 | /* dirPath */ dirp->dir_path,␊ |
736 | /* dirIndex */ &dirp->dir_index,␊ |
737 | /* dirEntry */ (char **)name, flags, time,␊ |
738 | 0, 0);␊ |
739 | }␊ |
740 | ␊ |
741 | //==========================================================================␊ |
742 | ␊ |
743 | int readdir_ext(struct dirstuff * dirp, const char ** name, long * flags,␊ |
744 | long * time, FinderInfo *finderInfo, long *infoValid)␊ |
745 | {␊ |
746 | return dirp->dir_bvr->fs_getdirentry( dirp->dir_bvr,␊ |
747 | /* dirPath */ dirp->dir_path,␊ |
748 | /* dirIndex */ &dirp->dir_index,␊ |
749 | /* dirEntry */ (char **)name,␊ |
750 | flags, time,␊ |
751 | finderInfo, infoValid);␊ |
752 | }␊ |
753 | ␊ |
754 | //==========================================================================␊ |
755 | ␊ |
756 | const char * systemConfigDir()␊ |
757 | {␊ |
758 | if (gBootFileType == kNetworkDeviceType)␊ |
759 | ␉return "";␊ |
760 | return "/Library/Preferences/SystemConfiguration";␊ |
761 | }␊ |
762 | ␊ |
763 | //==========================================================================␊ |
764 | ␊ |
765 | int gBootFileType;␊ |
766 | ␊ |
767 | void scanBootVolumes( int biosdev, int * count )␊ |
768 | {␊ |
769 | BVRef bvr = 0;␊ |
770 | ␊ |
771 | bvr = diskScanBootVolumes(biosdev, count);␊ |
772 | if (bvr == NULL)␊ |
773 | {␊ |
774 | #ifndef OPTION_ROM␊ |
775 | bvr = nbpScanBootVolumes(biosdev, count);␊ |
776 | if (bvr != NULL)␊ |
777 | {␊ |
778 | gBootFileType = kNetworkDeviceType;␊ |
779 | }␊ |
780 | #endif␊ |
781 | }␊ |
782 | else␊ |
783 | {␊ |
784 | gBootFileType = kBlockDeviceType;␊ |
785 | }␊ |
786 | }␊ |
787 | ␊ |
788 | //==========================================================================␊ |
789 | ␊ |
790 | void scanDisks(int biosdev, int *count)␊ |
791 | {␊ |
792 | #define MAX_HDD_COUNT 32␊ |
793 | int bvCount;␊ |
794 | int hd = 0;␊ |
795 | ␊ |
796 | // Testing up to MAX_HDD_COUNT hard drives.␊ |
797 | ␉while(!testBiosread(0x80 + hd, 0) && hd < MAX_HDD_COUNT)␊ |
798 | ␉{␊ |
799 | ␉ bvCount = 0;␊ |
800 | ␉ scanBootVolumes(0x80 + hd, &bvCount);␊ |
801 | hd++;␊ |
802 | ␉}␊ |
803 | ␊ |
804 | // Also scanning CD/DVD drive.␊ |
805 | ␉if (biosDevIsCDROM(gBIOSDev))␊ |
806 | ␉{␊ |
807 | ␉ bvCount = 0;␊ |
808 | ␉scanBootVolumes(gBIOSDev, &bvCount);␊ |
809 | ␉}␊ |
810 | }␊ |
811 | ␊ |
812 | //==========================================================================␊ |
813 | ␊ |
814 | BVRef selectBootVolume( BVRef chain )␊ |
815 | {␊ |
816 | ␉bool filteredChain = false;␊ |
817 | ␉bool foundPrimary = false;␊ |
818 | ␉BVRef bvr, bvr1 = 0, bvr2 = 0;␊ |
819 | ␉␊ |
820 | ␉if (chain->filtered) filteredChain = true;␊ |
821 | ␉␊ |
822 | #ifdef UNUSED␊ |
823 | ␉if (multiboot_partition_set)␊ |
824 | ␉␉for ( bvr = chain; bvr; bvr = bvr->next )␊ |
825 | ␉␉␉if ( bvr->part_no == multiboot_partition && bvr->biosdev == gBIOSDev ) ␊ |
826 | ␉␉␉␉return bvr;␊ |
827 | #endif␊ |
828 | ␉/*␊ |
829 | ␉ * Checking "Default Partition" key in system configuration - use format: hd(x,y), the volume UUID or label -␊ |
830 | ␉ * to override the default selection.␊ |
831 | ␉ * We accept only kBVFlagSystemVolume or kBVFlagForeignBoot volumes.␊ |
832 | ␉ */␊ |
833 | ␉char *val = XMLDecode(getStringForKey(kDefaultPartition, &bootInfo->bootConfig));␊ |
834 | if (val) {␊ |
835 | for ( bvr = chain; bvr; bvr = bvr->next ) {␊ |
836 | if (matchVolumeToString(bvr, val, false)) {␊ |
837 | free(val);␊ |
838 | return bvr;␊ |
839 | }␊ |
840 | }␊ |
841 | free(val);␊ |
842 | }␊ |
843 | ␉␊ |
844 | ␉/*␊ |
845 | ␉ * Scannig the volume chain backwards and trying to find ␊ |
846 | ␉ * a HFS+ volume with valid boot record signature.␊ |
847 | ␉ * If not found any active partition then we will␊ |
848 | ␉ * select this volume as the boot volume.␊ |
849 | ␉ */␊ |
850 | ␉for ( bvr = chain; bvr; bvr = bvr->next )␊ |
851 | ␉{␊ |
852 | ␉␉if ( bvr->flags & kBVFlagPrimary && bvr->biosdev == gBIOSDev ) foundPrimary = true;␊ |
853 | ␉␉// zhell -- Undo a regression that was introduced from r491 to 492.␊ |
854 | ␉␉// if gBIOSBootVolume is set already, no change is required␊ |
855 | ␉␉if ( bvr->flags & (kBVFlagBootable|kBVFlagSystemVolume)␊ |
856 | ␉␉␉&& gBIOSBootVolume␊ |
857 | ␉␉␉&& (!filteredChain || (filteredChain && bvr->visible))␊ |
858 | ␉␉␉&& bvr->biosdev == gBIOSDev )␊ |
859 | ␉␉␉bvr2 = bvr;␊ |
860 | ␉␉// zhell -- if gBIOSBootVolume is NOT set, we use the "if" statement␊ |
861 | ␉␉// from r491,␊ |
862 | ␉␉if ( bvr->flags & kBVFlagBootable␊ |
863 | ␉␉␉&& ! gBIOSBootVolume␊ |
864 | ␉␉␉&& bvr->biosdev == gBIOSDev )␊ |
865 | ␉␉␉bvr2 = bvr;␊ |
866 | ␉} ␊ |
867 | ␉␊ |
868 | ␉␊ |
869 | ␉/*␊ |
870 | ␉ * Use the standrad method for selecting the boot volume.␊ |
871 | ␉ */␊ |
872 | ␉if (foundPrimary)␊ |
873 | ␉{␊ |
874 | ␉␉for ( bvr = chain; bvr; bvr = bvr->next )␊ |
875 | ␉␉{␊ |
876 | ␉␉␉if ( bvr->flags & kBVFlagNativeBoot && bvr->biosdev == gBIOSDev ) bvr1 = bvr;␊ |
877 | ␉␉␉if ( bvr->flags & kBVFlagPrimary && bvr->biosdev == gBIOSDev ) bvr2 = bvr;␊ |
878 | ␉␉}␊ |
879 | ␉}␊ |
880 | ␉␊ |
881 | ␉bvr = bvr2 ? bvr2 :␊ |
882 | ␉bvr1 ? bvr1 : chain;␊ |
883 | ␉␊ |
884 | ␉return bvr;␊ |
885 | }␊ |
886 | ␊ |
887 | //==========================================================================␊ |
888 | ␊ |
889 | #define LP '('␊ |
890 | #define RP ')'␊ |
891 | int gBIOSDev;␊ |
892 | ␊ |
893 | /*!␊ |
894 | This is like boot2's gBootVolume except it is for the internal use of␊ |
895 | libsaio to track which volume an unqualified path should be relative to.␊ |
896 | This replaces bootInfo->kernDev as the carrier of this information.␊ |
897 | */␊ |
898 | static BVRef gRootVolume;␊ |
899 | ␊ |
900 | void setRootVolume(BVRef volume)␊ |
901 | {␊ |
902 | gRootVolume = volume;␊ |
903 | // Veto non-native FS. Basically that means don't allow the root volume to␊ |
904 | // be set to a volume we can't read files from.␊ |
905 | if(gRootVolume != NULL && ((gRootVolume->flags & kBVFlagNativeBoot) == 0))␊ |
906 | gRootVolume = NULL;␊ |
907 | }␊ |
908 | ␊ |
909 | void setBootGlobals(BVRef chain)␊ |
910 | {␊ |
911 | // Record default boot device.␊ |
912 | gBootVolume = selectBootVolume(chain);␊ |
913 | ␊ |
914 | // turbo - Save the ORIGINAL boot volume too for loading our mkext␊ |
915 | if (!gBIOSBootVolume) gBIOSBootVolume = gBootVolume;␊ |
916 | ␊ |
917 | setRootVolume(gBootVolume);␉␊ |
918 | }␊ |
919 | ␊ |
920 | /*!␊ |
921 | Extracts the volume selector from the pathname, returns the selected␊ |
922 | BVRef, and sets *outPath to the remainder of the path.␊ |
923 | If the path did not include a volume selector then the current volume␊ |
924 | is used. When called with a volume selector the current volume␊ |
925 | is changed to the selected volume unless the volume selector is␊ |
926 | that of a ramdisk.␊ |
927 | */␊ |
928 | BVRef getBootVolumeRef( const char * path, const char ** outPath )␊ |
929 | {␊ |
930 | const char * cp;␊ |
931 | BVRef bvr = gRootVolume;␊ |
932 | int biosdev = gBIOSDev;␊ |
933 | ␊ |
934 | // Search for left parenthesis in the path specification.␊ |
935 | ␊ |
936 | for (cp = path; *cp; cp++) {␊ |
937 | if (*cp == LP || *cp == '/') break;␊ |
938 | }␊ |
939 | ␊ |
940 | if (*cp != LP) // no left paren found␊ |
941 | {␊ |
942 | // Path is using the implicit current device so if there is␊ |
943 | // no current device, then we must fail.␊ |
944 | cp = path;␊ |
945 | if ( gRootVolume == NULL )␊ |
946 | return NULL;␊ |
947 | }␊ |
948 | else if ((cp - path) == 2) // found "xx("␊ |
949 | {␊ |
950 | const struct devsw * dp;␊ |
951 | const char * xp = path;␊ |
952 | int i;␊ |
953 | int unit = -1;␊ |
954 | int part = -1;␊ |
955 | ␊ |
956 | cp++;␊ |
957 | ␊ |
958 | // Check the 2 character device name pointed by 'xp'.␊ |
959 | ␊ |
960 | for (dp = devsw; dp->name; dp++)␊ |
961 | {␊ |
962 | if ((xp[0] == dp->name[0]) && (xp[1] == dp->name[1]))␊ |
963 | break; // found matching entry␊ |
964 | }␊ |
965 | if (dp->name == NULL)␊ |
966 | {␊ |
967 | error("Unknown device '%c%c'\n", xp[0], xp[1]);␊ |
968 | return NULL;␊ |
969 | }␊ |
970 | ␊ |
971 | // Extract the optional unit number from the specification.␊ |
972 | // hd(unit) or hd(unit, part).␊ |
973 | ␊ |
974 | i = 0;␊ |
975 | while (*cp >= '0' && *cp <= '9')␊ |
976 | {␊ |
977 | i = i * 10 + *cp++ - '0';␊ |
978 | unit = i;␊ |
979 | }␊ |
980 | ␊ |
981 | // Unit is no longer optional and never really was.␊ |
982 | // If the user failed to specify it then the unit number from the previous kernDev␊ |
983 | // would have been used which makes little sense anyway.␊ |
984 | // For example, if the user did fd()/foobar and the current root device was the␊ |
985 | // second hard disk (i.e. unit 1) then fd() would select the second floppy drive!␊ |
986 | if(unit == -1)␊ |
987 | return NULL;␊ |
988 | ␊ |
989 | // Extract the optional partition number from the specification.␊ |
990 | ␊ |
991 | if (*cp == ',')␊ |
992 | part = atoi(++cp);␊ |
993 | ␊ |
994 | // If part is not specified part will be -1 whereas before it would have been␊ |
995 | // whatever the last partition was which makes about zero sense if the device␊ |
996 | // has been switched.␊ |
997 | ␊ |
998 | // Skip past the right paren.␊ |
999 | ␊ |
1000 | for ( ; *cp && *cp != RP; cp++) /* LOOP */;␊ |
1001 | if (*cp == RP) cp++;␊ |
1002 | ␊ |
1003 | biosdev = dp->biosdev + unit;␊ |
1004 | bvr = newBootVolumeRef(biosdev, part);␊ |
1005 | ␊ |
1006 | if(bvr == NULL)␊ |
1007 | return NULL;␊ |
1008 | }␊ |
1009 | else␊ |
1010 | {␊ |
1011 | // Bad device specifier, skip past the right paren.␊ |
1012 | ␊ |
1013 | for ( cp++; *cp && *cp != RP; cp++) /* LOOP */;␊ |
1014 | if (*cp == RP) cp++;␊ |
1015 | // If gRootVolume was NULL, then bvr will be NULL as well which␊ |
1016 | // should be caught by the caller.␊ |
1017 | }␊ |
1018 | ␊ |
1019 | // Returns the file path following the device spec.␊ |
1020 | // e.g. 'hd(1,b)mach_kernel' is reduced to 'mach_kernel'.␊ |
1021 | ␊ |
1022 | *outPath = cp;␊ |
1023 | ␊ |
1024 | return bvr;␊ |
1025 | }␊ |
1026 | ␊ |
1027 | //==========================================================================␊ |
1028 | // Function name is a misnomer as scanBootVolumes usually calls diskScanBootVolumes␊ |
1029 | // which caches the information. So it's only allocated on the first run.␊ |
1030 | static BVRef newBootVolumeRef( int biosdev, int partno )␊ |
1031 | {␊ |
1032 | ␉BVRef bvr, bvr1, bvrChain;␊ |
1033 | ␊ |
1034 | ␉bvr = bvr1 = NULL;␊ |
1035 | ␊ |
1036 | // Try resolving "rd" and "bt" devices first.␊ |
1037 | #ifndef OPTION_ROM␊ |
1038 | ␉if (biosdev == kPseudoBIOSDevRAMDisk)␊ |
1039 | ␉{␊ |
1040 | ␉␉if (gRAMDiskVolume)␊ |
1041 | ␉␉ bvr1 = gRAMDiskVolume;␊ |
1042 | ␉}␊ |
1043 | ␉else ␊ |
1044 | #endif␊ |
1045 | ␉if (biosdev == kPseudoBIOSDevBooter)␊ |
1046 | ␉{␊ |
1047 | #ifndef OPTION_ROM␊ |
1048 | ␉␉if (gRAMDiskVolume != NULL && gRAMDiskBTAliased)␊ |
1049 | ␉␉␉bvr1 = gRAMDiskVolume;␊ |
1050 | ␉␉else␊ |
1051 | #endif␊ |
1052 | ␉␉␉bvr1 = gBIOSBootVolume;␊ |
1053 | ␉}␊ |
1054 | ␉else␊ |
1055 | ␉{␊ |
1056 | ␉␉// Fetch the volume list from the device.␊ |
1057 | ␊ |
1058 | ␉␉scanBootVolumes( biosdev, NULL );␊ |
1059 | ␉␉bvrChain = getBVChainForBIOSDev(biosdev);␊ |
1060 | ␊ |
1061 | ␉␉// Look for a perfect match based on device and partition number.␊ |
1062 | ␊ |
1063 | ␉␉for ( bvr1 = NULL, bvr = bvrChain; bvr; bvr = bvr->next )␊ |
1064 | ␉␉{␊ |
1065 | ␉␉␉if ( ( bvr->flags & kBVFlagNativeBoot ) == 0 ) continue;␊ |
1066 | ␊ |
1067 | ␉␉␉bvr1 = bvr;␊ |
1068 | ␉␉␉if ( bvr->part_no == partno ) break;␊ |
1069 | ␉␉}␊ |
1070 | ␉}␊ |
1071 | ␊ |
1072 | ␉return bvr ? bvr : bvr1;␊ |
1073 | }␊ |
1074 | ␊ |
1075 | //==========================================================================␊ |
1076 | // getDeviceDescription() - Extracts unit number and partition number␊ |
1077 | // from bvr structure into "dw(u,p)" format.␊ |
1078 | // Returns length of the out string␊ |
1079 | int getDeviceDescription(BVRef bvr, char *str)␊ |
1080 | {␊ |
1081 | if(!str)␊ |
1082 | return 0;␊ |
1083 | ␊ |
1084 | ␉*str = '\0';␊ |
1085 | ␊ |
1086 | ␉if (bvr)␊ |
1087 | ␉{␊ |
1088 | const struct devsw *dp = devsw;␊ |
1089 | ␉␉while(dp->name && bvr->biosdev >= dp->biosdev)␊ |
1090 | dp++;␊ |
1091 | ␊ |
1092 | ␉␉dp--;␊ |
1093 | ␉␉if (dp->name)␊ |
1094 | return sprintf(str, "%s(%d,%d)", dp->name, bvr->biosdev - dp->biosdev, bvr->part_no);␊ |
1095 | ␉}␊ |
1096 | ␉␊ |
1097 | ␉return 0;␊ |
1098 | }␊ |
1099 |