iokit/bsddev/IOKitBSDInit.cpp

   1 /*
   2  * Copyright (c) 1998-2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. The rights granted to you under the License
  10  * may not be used to create, or enable the creation or redistribution of,
  11  * unlawful or unlicensed copies of an Apple operating system, or to
  12  * circumvent, violate, or enable the circumvention or violation of, any
  13  * terms of an Apple operating system software license agreement.
  14  *
  15  * Please obtain a copy of the License at
  16  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  17  *
  18  * The Original Code and all software distributed under the License are
  19  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  20  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  21  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  22  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  23  * Please see the License for the specific language governing rights and
  24  * limitations under the License.
  25  *
  26  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  27  */
  28 #include <IOKit/IOBSD.h>
  29 #include <IOKit/IOLib.h>
  30 #include <IOKit/IOService.h>
  31 #include <IOKit/IODeviceTreeSupport.h>
  32 #include <IOKit/IOKitKeys.h>
  33 #include <IOKit/IOPlatformExpert.h>
  34
  35 extern "C" {
  36
  37 #include <pexpert/pexpert.h>
  38 #include <kern/clock.h>
  39
  40 // how long to wait for matching root device, secs
  41 #define ROOTDEVICETIMEOUT       60
  42
  43 extern dev_t mdevadd(int devid, ppnum_t base, unsigned int size, int phys);
  44 extern dev_t mdevlookup(int devid);
  45
  46 kern_return_t
  47 IOKitBSDInit( void )
  48 {
  49     IOService::publishResource("IOBSD");
  50
  51     return( kIOReturnSuccess );
  52 }
  53
  54 OSDictionary * IOBSDNameMatching( const char * name )
  55 {
  56     OSDictionary *      dict;
  57     const OSSymbol *    str = 0;
  58
  59     do {
  60
  61         dict = IOService::serviceMatching( gIOServiceKey );
  62         if( !dict)
  63             continue;
  64         str = OSSymbol::withCString( name );
  65         if( !str)
  66             continue;
  67         dict->setObject( kIOBSDNameKey, (OSObject *) str );
  68         str->release();
  69
  70         return( dict );
  71
  72     } while( false );
  73
  74     if( dict)
  75         dict->release();
  76     if( str)
  77         str->release();
  78
  79     return( 0 );
  80 }
  81
  82 OSDictionary * IOUUIDMatching( void )
  83 {
  84     return IOService::resourceMatching( "boot-uuid-media" );
  85 }
  86
  87
  88 OSDictionary * IOCDMatching( void )
  89 {
  90     OSDictionary *      dict;
  91     const OSSymbol *    str;
  92
  93     dict = IOService::serviceMatching( "IOMedia" );
  94     if( dict == 0 ) {
  95         IOLog("Unable to find IOMedia\n");
  96         return 0;
  97     }
  98
  99     str = OSSymbol::withCString( "CD_ROM_Mode_1" );
 100     if( str == 0 ) {
 101         dict->release();
 102         return 0;
 103     }
 104
 105     dict->setObject( "Content Hint", (OSObject *)str );
 106     str->release();
 107     return( dict );
 108 }
 109
 110 OSDictionary * IONetworkMatching(  const char * path,
 111                                    char * buf, int maxLen )
 112 {
 113     OSDictionary *      matching = 0;
 114     OSDictionary *      dict;
 115     OSString *          str;
 116     char *              comp;
 117     const char *        skip;
 118     int                 len;
 119
 120     do {
 121
 122         len = strlen( kIODeviceTreePlane ":" );
 123         maxLen -= len;
 124         if( maxLen < 0)
 125             continue;
 126
 127         strcpy( buf, kIODeviceTreePlane ":" );
 128         comp = buf + len;
 129
 130         // remove parameters following ':' from the path
 131         skip = strchr( path, ':');
 132         if( !skip)
 133             continue;
 134
 135         len = skip - path;
 136         maxLen -= len;
 137         if( maxLen < 0)
 138             continue;
 139         strncpy( comp, path, len );
 140         comp[ len ] = 0;
 141
 142         matching = IOService::serviceMatching( "IONetworkInterface" );
 143         if( !matching)
 144             continue;
 145         dict = IOService::addLocation( matching );
 146         if( !dict)
 147             continue;
 148
 149         str = OSString::withCString( buf );
 150         if( !str)
 151             continue;
 152         dict->setObject( kIOPathMatchKey, str );
 153         str->release();
 154
 155         return( matching );
 156
 157     } while( false );
 158
 159     if( matching)
 160         matching->release();
 161
 162     return( 0 );
 163 }
 164
 165 OSDictionary * IONetworkNamePrefixMatching( const char * prefix )
 166 {
 167     OSDictionary *       matching;
 168     OSDictionary *   propDict = 0;
 169     const OSSymbol * str      = 0;
 170
 171     do {
 172         matching = IOService::serviceMatching( "IONetworkInterface" );
 173         if ( matching == 0 )
 174             continue;
 175
 176         propDict = OSDictionary::withCapacity(1);
 177         if ( propDict == 0 )
 178             continue;
 179
 180         str = OSSymbol::withCString( prefix );
 181         if ( str == 0 )
 182             continue;
 183
 184         propDict->setObject( "IOInterfaceNamePrefix", (OSObject *) str );
 185         str->release();
 186         str = 0;
 187
 188         if ( matching->setObject( gIOPropertyMatchKey,
 189                                   (OSObject *) propDict ) != true )
 190             continue;
 191
 192         propDict->release();
 193         propDict = 0;
 194
 195         return( matching );
 196
 197     } while ( false );
 198
 199     if ( matching ) matching->release();
 200     if ( propDict ) propDict->release();
 201     if ( str      ) str->release();
 202
 203     return( 0 );
 204 }
 205
 206 static bool IORegisterNetworkInterface( IOService * netif )
 207 {
 208     // A network interface is typically named and registered
 209     // with BSD after receiving a request from a user space
 210     // "namer". However, for cases when the system needs to
 211     // root from the network, this registration task must be
 212     // done inside the kernel and completed before the root
 213     // device is handed to BSD.
 214
 215     IOService *    stack;
 216     OSNumber *     zero    = 0;
 217     OSString *     path    = 0;
 218     OSDictionary * dict    = 0;
 219     char *         pathBuf = 0;
 220     int            len;
 221     enum { kMaxPathLen = 512 };
 222
 223     do {
 224         stack = IOService::waitForService(
 225                 IOService::serviceMatching("IONetworkStack") );
 226         if ( stack == 0 ) break;
 227
 228         dict = OSDictionary::withCapacity(3);
 229         if ( dict == 0 ) break;
 230
 231         zero = OSNumber::withNumber((UInt64) 0, 32);
 232         if ( zero == 0 ) break;
 233
 234         pathBuf = (char *) IOMalloc( kMaxPathLen );
 235         if ( pathBuf == 0 ) break;
 236
 237         len = kMaxPathLen;
 238         if ( netif->getPath( pathBuf, &len, gIOServicePlane )
 239              == false ) break;
 240
 241         path = OSString::withCStringNoCopy( pathBuf );
 242         if ( path == 0 ) break;
 243
 244         dict->setObject( "IOInterfaceUnit", zero );
 245         dict->setObject( kIOPathMatchKey,   path );
 246
 247         stack->setProperties( dict );
 248     }
 249     while ( false );
 250
 251     if ( zero ) zero->release();
 252     if ( path ) path->release();
 253     if ( dict ) dict->release();
 254     if ( pathBuf ) IOFree(pathBuf, kMaxPathLen);
 255
 256         return ( netif->getProperty( kIOBSDNameKey ) != 0 );
 257 }
 258
 259 OSDictionary * IODiskMatching( const char * path, char * buf, int maxLen )
 260 {
 261     const char * look;
 262     const char * alias;
 263     char *       comp;
 264     long         unit = -1;
 265     long         partition = -1;
 266     long                 lun = -1;
 267     char         c;
 268
 269     // scan the tail of the path for "@unit:partition"
 270     do {
 271         // Have to get the full path to the controller - an alias may
 272         // tell us next to nothing, like "hd:8"
 273         alias = IORegistryEntry::dealiasPath( &path, gIODTPlane );
 274
 275         look = path + strlen( path);
 276         c = ':';
 277         while( look != path) {
 278             if( *(--look) == c) {
 279                 if( c == ':') {
 280                     partition = strtol( look + 1, 0, 0 );
 281                     c = '@';
 282                 } else if( c == '@') {
 283                     unit = strtol( look + 1, &comp, 16 );
 284
 285                     if( *comp == ',') {
 286                         lun = strtol( comp + 1, 0, 16 );
 287                     }
 288
 289                     c = '/';
 290                 } else if( c == '/') {
 291                     c = 0;
 292                     break;
 293                 }
 294             }
 295
 296                 if( alias && (look == path)) {
 297                 path = alias;
 298                 look = path + strlen( path);
 299                 alias = 0;
 300             }
 301         }
 302         if( c || unit == -1 || partition == -1)
 303             continue;
 304
 305         maxLen -= strlen( "{" kIOPathMatchKey "='" kIODeviceTreePlane ":" );
 306         maxLen -= ( alias ? strlen( alias ) : 0 ) + (look - path);
 307         maxLen -= strlen( "/@hhhhhhhh,hhhhhhhh:dddddddddd';}" );
 308
 309         if( maxLen > 0) {
 310             sprintf( buf, "{" kIOPathMatchKey "='" kIODeviceTreePlane ":" );
 311             comp = buf + strlen( buf );
 312
 313             if( alias) {
 314                 strcpy( comp, alias );
 315                 comp += strlen( alias );
 316             }
 317
 318             if ( (look - path)) {
 319                 strncpy( comp, path, look - path);
 320                 comp += look - path;
 321             }
 322
 323                         if ( lun != -1 )
 324                         {
 325                                 sprintf ( comp, "/@%lx,%lx:%ld';}", unit, lun, partition );
 326                         }
 327                         else
 328                         {
 329                 sprintf( comp, "/@%lx:%ld';}", unit, partition );
 330             }
 331         } else
 332             continue;
 333
 334         return( OSDynamicCast(OSDictionary, OSUnserialize( buf, 0 )) );
 335
 336     } while( false );
 337
 338     return( 0 );
 339 }
 340
 341 OSDictionary * IOOFPathMatching( const char * path, char * buf, int maxLen )
 342 {
 343     OSDictionary *      matching;
 344     OSString *          str;
 345     char *              comp;
 346     int                 len;
 347
 348     /* need to look up path, get device type,
 349         call matching help based on device type */
 350
 351     matching = IODiskMatching( path, buf, maxLen );
 352     if( matching)
 353         return( matching );
 354
 355     do {
 356
 357         len = strlen( kIODeviceTreePlane ":" );
 358         maxLen -= len;
 359         if( maxLen < 0)
 360             continue;
 361
 362         strcpy( buf, kIODeviceTreePlane ":" );
 363         comp = buf + len;
 364
 365         len = strlen( path );
 366         maxLen -= len;
 367         if( maxLen < 0)
 368             continue;
 369         strncpy( comp, path, len );
 370         comp[ len ] = 0;
 371
 372         matching = OSDictionary::withCapacity( 1 );
 373         if( !matching)
 374             continue;
 375
 376         str = OSString::withCString( buf );
 377         if( !str)
 378             continue;
 379         matching->setObject( kIOPathMatchKey, str );
 380         str->release();
 381
 382         return( matching );
 383
 384     } while( false );
 385
 386     if( matching)
 387         matching->release();
 388
 389     return( 0 );
 390 }
 391
 392 IOService * IOFindMatchingChild( IOService * service )
 393 {
 394     // find a matching child service
 395     IOService * child = 0;
 396     OSIterator * iter = service->getClientIterator();
 397     if ( iter ) {
 398         while( ( child = (IOService *) iter->getNextObject() ) ) {
 399             OSDictionary * dict = OSDictionary::withCapacity( 1 );
 400             if( dict == 0 ) {
 401                 iter->release();
 402                 return 0;
 403             }
 404             const OSSymbol * str = OSSymbol::withCString( "Apple_HFS" );
 405             if( str == 0 ) {
 406                 dict->release();
 407                 iter->release();
 408                 return 0;
 409             }
 410             dict->setObject( "Content", (OSObject *)str );
 411             str->release();
 412             if ( child->compareProperty( dict, "Content" ) ) {
 413                 dict->release();
 414                 break;
 415             }
 416             dict->release();
 417             IOService * subchild = IOFindMatchingChild( child );
 418             if ( subchild ) {
 419                 child = subchild;
 420                 break;
 421             }
 422         }
 423         iter->release();
 424     }
 425     return child;
 426 }
 427
 428 static int didRam = 0;
 429
 430 kern_return_t IOFindBSDRoot( char * rootName,
 431                                 dev_t * root, u_int32_t * oflags )
 432 {
 433     mach_timespec_t     t;
 434     IOService *         service;
 435     IORegistryEntry *   regEntry;
 436     OSDictionary *      matching = 0;
 437     OSString *          iostr;
 438     OSNumber *          off;
 439     OSData *            data = 0;
 440     UInt32              *ramdParms = 0;
 441
 442     UInt32              flags = 0;
 443     int                 minor, major;
 444     bool                findHFSChild = false;
 445     char *              mediaProperty = 0;
 446     char *              rdBootVar;
 447     enum {              kMaxPathBuf = 512, kMaxBootVar = 128 };
 448     char *              str;
 449     const char *        look = 0;
 450     int                 len;
 451     bool                forceNet = false;
 452     bool                debugInfoPrintedOnce = false;
 453     const char *        uuidStr = NULL;
 454
 455     static int          mountAttempts = 0;
 456
 457     int xchar, dchar;
 458
 459
 460     if( mountAttempts++)
 461         IOSleep( 5 * 1000 );
 462
 463     str = (char *) IOMalloc( kMaxPathBuf + kMaxBootVar );
 464     if( !str)
 465         return( kIOReturnNoMemory );
 466     rdBootVar = str + kMaxPathBuf;
 467
 468     if (!PE_parse_boot_arg("rd", rdBootVar )
 469      && !PE_parse_boot_arg("rootdev", rdBootVar ))
 470         rdBootVar[0] = 0;
 471
 472     do {
 473         if( (regEntry = IORegistryEntry::fromPath( "/chosen", gIODTPlane ))) {
 474             data = (OSData *) regEntry->getProperty( "boot-uuid" );
 475             if( data) {
 476                 uuidStr = (const char*)data->getBytesNoCopy();
 477                 OSString *uuidString = OSString::withCString( uuidStr );
 478
 479                 // match the boot-args boot-uuid processing below
 480                 if( uuidString) {
 481                     IOLog("rooting via boot-uuid from /chosen: %s\n", uuidStr);
 482                     IOService::publishResource( "boot-uuid", uuidString );
 483                     uuidString->release();
 484                     matching = IOUUIDMatching();
 485                     mediaProperty = "boot-uuid-media";
 486                     regEntry->release();
 487                     continue;
 488                 } else {
 489                     uuidStr = NULL;
 490                 }
 491             }
 492
 493             // else try for an OF Path
 494             data = (OSData *) regEntry->getProperty( "rootpath" );
 495             regEntry->release();
 496             if( data) continue;
 497         }
 498         if( (regEntry = IORegistryEntry::fromPath( "/options", gIODTPlane ))) {
 499             data = (OSData *) regEntry->getProperty( "boot-file" );
 500             regEntry->release();
 501             if( data) continue;
 502         }
 503     } while( false );
 504
 505     if( data && !uuidStr)
 506         look = (const char *) data->getBytesNoCopy();
 507
 508     if( rdBootVar[0] == '*') {
 509         look = rdBootVar + 1;
 510                 forceNet = false;
 511     } else {
 512         if( (regEntry = IORegistryEntry::fromPath( "/", gIODTPlane ))) {
 513             forceNet = (0 != regEntry->getProperty( "net-boot" ));
 514                 regEntry->release();
 515                 }
 516     }
 517
 518
 519
 520 //
 521 //      See if we have a RAMDisk property in /chosen/memory-map.  If so, make it into a device.
 522 //      It will become /dev/mdx, where x is 0-f.
 523 //
 524
 525         if(!didRam) {                                                                                           /* Have we already build this ram disk? */
 526                 didRam = 1;                                                                                             /* Remember we did this */
 527                 if((regEntry = IORegistryEntry::fromPath( "/chosen/memory-map", gIODTPlane ))) {        /* Find the map node */
 528                         data = (OSData *)regEntry->getProperty("RAMDisk");      /* Find the ram disk, if there */
 529                         if(data) {                                                                                      /* We found one */
 530
 531                                 ramdParms = (UInt32 *)data->getBytesNoCopy();   /* Point to the ram disk base and size */
 532                                 (void)mdevadd(-1, ramdParms[0] >> 12, ramdParms[1] >> 12, 0);   /* Initialize it and pass back the device number */
 533                         }
 534                         regEntry->release();                                                            /* Toss the entry */
 535                 }
 536         }
 537
 538 //
 539 //      Now check if we are trying to root on a memory device
 540 //
 541
 542         if((rdBootVar[0] == 'm') && (rdBootVar[1] == 'd') && (rdBootVar[3] == 0)) {
 543                 dchar = xchar = rdBootVar[2];                                                   /* Get the actual device */
 544                 if((xchar >= '0') && (xchar <= '9')) xchar = xchar - '0';       /* If digit, convert */
 545                 else {
 546                         xchar = xchar & ~' ';                                                           /* Fold to upper case */
 547                         if((xchar >= 'A') && (xchar <= 'F')) {                          /* Is this a valid digit? */
 548                                 xchar = (xchar & 0xF) + 9;                                              /* Convert the hex digit */
 549                                 dchar = dchar | ' ';                                                    /* Fold to lower case */
 550                         }
 551                         else xchar = -1;                                                                        /* Show bogus */
 552                 }
 553                 if(xchar >= 0) {                                                                                /* Do we have a valid memory device name? */
 554                         *root = mdevlookup(xchar);                                                      /* Find the device number */
 555                         if(*root >= 0) {                                                                        /* Did we find one? */
 556
 557                                 rootName[0] = 'm';                                                              /* Build root name */
 558                                 rootName[1] = 'd';                                                              /* Build root name */
 559                                 rootName[2] = dchar;                                                    /* Build root name */
 560                                 rootName[3] = 0;                                                                /* Build root name */
 561                                 IOLog("BSD root: %s, major %d, minor %d\n", rootName, major(*root), minor(*root));
 562                                 *oflags = 0;                                                                    /* Show that this is not network */
 563                                 goto iofrootx;                                                                  /* Join common exit... */
 564                         }
 565                         panic("IOFindBSDRoot: specified root memory device, %s, has not been configured\n", rdBootVar); /* Not there */
 566                 }
 567         }
 568
 569     if( look) {
 570         // from OpenFirmware path
 571         IOLog("From path: \"%s\", ", look);
 572
 573         if( forceNet || (0 == strncmp( look, "enet", strlen( "enet" ))) ) {
 574             matching = IONetworkMatching( look, str, kMaxPathBuf );
 575         } else {
 576             matching = IODiskMatching( look, str, kMaxPathBuf );
 577         }
 578     }
 579
 580       if( (!matching) && rdBootVar[0] ) {
 581         // by BSD name
 582         look = rdBootVar;
 583         if( look[0] == '*')
 584             look++;
 585
 586         if ( strncmp( look, "en", strlen( "en" )) == 0 ) {
 587             matching = IONetworkNamePrefixMatching( "en" );
 588         } else if ( strncmp( look, "cdrom", strlen( "cdrom" )) == 0 ) {
 589             matching = IOCDMatching();
 590             findHFSChild = true;
 591         } else if ( strncmp( look, "uuid", strlen( "uuid" )) == 0 ) {
 592             char *uuid;
 593             OSString *uuidString;
 594
 595             uuid = (char *)IOMalloc( kMaxBootVar );
 596
 597             if ( uuid ) {
 598                 if (!PE_parse_boot_arg( "boot-uuid", uuid )) {
 599                     panic( "rd=uuid but no boot-uuid=<value> specified" );
 600                 }
 601                 uuidString = OSString::withCString( uuid );
 602                 if ( uuidString ) {
 603                     IOService::publishResource( "boot-uuid", uuidString );
 604                     uuidString->release();
 605                     IOLog( "\nWaiting for boot volume with UUID %s\n", uuid );
 606                     matching = IOUUIDMatching();
 607                     mediaProperty = "boot-uuid-media";
 608                 }
 609                 IOFree( uuid, kMaxBootVar );
 610             }
 611         } else {
 612             matching = IOBSDNameMatching( look );
 613         }
 614     }
 615
 616     if( !matching) {
 617         OSString * astring;
 618         // any HFS
 619         matching = IOService::serviceMatching( "IOMedia" );
 620         astring = OSString::withCStringNoCopy("Apple_HFS");
 621         if ( astring ) {
 622             matching->setObject("Content", astring);
 623             astring->release();
 624         }
 625     }
 626
 627     if( true && matching) {
 628         OSSerialize * s = OSSerialize::withCapacity( 5 );
 629
 630         if( matching->serialize( s )) {
 631             IOLog( "Waiting on %s\n", s->text() );
 632             s->release();
 633         }
 634     }
 635
 636     do {
 637         t.tv_sec = ROOTDEVICETIMEOUT;
 638         t.tv_nsec = 0;
 639         matching->retain();
 640         service = IOService::waitForService( matching, &t );
 641         if( (!service) || (mountAttempts == 10)) {
 642             PE_display_icon( 0, "noroot");
 643             IOLog( "Still waiting for root device\n" );
 644
 645             if( !debugInfoPrintedOnce) {
 646                 debugInfoPrintedOnce = true;
 647                 if( gIOKitDebug & kIOLogDTree) {
 648                     IOLog("\nDT plane:\n");
 649                     IOPrintPlane( gIODTPlane );
 650                 }
 651                 if( gIOKitDebug & kIOLogServiceTree) {
 652                     IOLog("\nService plane:\n");
 653                     IOPrintPlane( gIOServicePlane );
 654                 }
 655                 if( gIOKitDebug & kIOLogMemory)
 656                     IOPrintMemory();
 657             }
 658         }
 659     } while( !service);
 660     matching->release();
 661
 662     if ( service && findHFSChild ) {
 663         bool waiting = true;
 664         // wait for children services to finish registering
 665         while ( waiting ) {
 666             t.tv_sec = ROOTDEVICETIMEOUT;
 667             t.tv_nsec = 0;
 668             if ( service->waitQuiet( &t ) == kIOReturnSuccess ) {
 669                 waiting = false;
 670             } else {
 671                 IOLog( "Waiting for child registration\n" );
 672             }
 673         }
 674         // look for a subservice with an Apple_HFS child
 675         IOService * subservice = IOFindMatchingChild( service );
 676         if ( subservice ) service = subservice;
 677     } else if ( service && mediaProperty ) {
 678         service = service->getProperty(mediaProperty);
 679     }
 680
 681     major = 0;
 682     minor = 0;
 683
 684     // If the IOService we matched to is a subclass of IONetworkInterface,
 685     // then make sure it has been registered with BSD and has a BSD name
 686     // assigned.
 687
 688     if ( service
 689     &&   service->metaCast( "IONetworkInterface" )
 690     &&   !IORegisterNetworkInterface( service ) )
 691     {
 692         service = 0;
 693     }
 694
 695     if( service) {
 696
 697         len = kMaxPathBuf;
 698         service->getPath( str, &len, gIOServicePlane );
 699         IOLog( "Got boot device = %s\n", str );
 700
 701         iostr = (OSString *) service->getProperty( kIOBSDNameKey );
 702         if( iostr)
 703             strcpy( rootName, iostr->getCStringNoCopy() );
 704         off = (OSNumber *) service->getProperty( kIOBSDMajorKey );
 705         if( off)
 706             major = off->unsigned32BitValue();
 707         off = (OSNumber *) service->getProperty( kIOBSDMinorKey );
 708         if( off)
 709             minor = off->unsigned32BitValue();
 710
 711         if( service->metaCast( "IONetworkInterface" ))
 712             flags |= 1;
 713
 714     } else {
 715
 716         IOLog( "Wait for root failed\n" );
 717         strcpy( rootName, "en0");
 718         flags |= 1;
 719     }
 720
 721     IOLog( "BSD root: %s", rootName );
 722     if( major)
 723         IOLog(", major %d, minor %d\n", major, minor );
 724     else
 725         IOLog("\n");
 726
 727     *root = makedev( major, minor );
 728     *oflags = flags;
 729
 730     IOFree( str,  kMaxPathBuf + kMaxBootVar );
 731
 732 iofrootx:
 733     if( (gIOKitDebug & (kIOLogDTree | kIOLogServiceTree | kIOLogMemory)) && !debugInfoPrintedOnce) {
 734
 735         IOService::getPlatform()->waitQuiet();
 736         if( gIOKitDebug & kIOLogDTree) {
 737             IOLog("\nDT plane:\n");
 738             IOPrintPlane( gIODTPlane );
 739         }
 740         if( gIOKitDebug & kIOLogServiceTree) {
 741             IOLog("\nService plane:\n");
 742             IOPrintPlane( gIOServicePlane );
 743         }
 744         if( gIOKitDebug & kIOLogMemory)
 745             IOPrintMemory();
 746     }
 747
 748     return( kIOReturnSuccess );
 749 }
 750
 751 void *
 752 IOBSDRegistryEntryForDeviceTree(char * path)
 753 {
 754     return (IORegistryEntry::fromPath(path, gIODTPlane));
 755 }
 756
 757 void
 758 IOBSDRegistryEntryRelease(void * entry)
 759 {
 760     IORegistryEntry * regEntry = (IORegistryEntry *)entry;
 761
 762     if (regEntry)
 763         regEntry->release();
 764     return;
 765 }
 766
 767 const void *
 768 IOBSDRegistryEntryGetData(void * entry, char * property_name,
 769                           int * packet_length)
 770 {
 771     OSData *            data;
 772     IORegistryEntry *   regEntry = (IORegistryEntry *)entry;
 773
 774     data = (OSData *) regEntry->getProperty(property_name);
 775     if (data) {
 776         *packet_length = data->getLength();
 777         return (data->getBytesNoCopy());
 778     }
 779     return (NULL);
 780 }
 781
 782 } /* extern "C" */