iokit/bsddev/IOKitBSDInit.cpp

   1 /*
   2  * Copyright (c) 1998-2011 Apple 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/IOCatalogue.h>
  32 #include <IOKit/IODeviceTreeSupport.h>
  33 #include <IOKit/IOKitKeys.h>
  34 #include <IOKit/IOPlatformExpert.h>
  35
  36 extern "C" {
  37
  38 #include <pexpert/pexpert.h>
  39 #include <kern/clock.h>
  40 #include <uuid/uuid.h>
  41
  42 // how long to wait for matching root device, secs
  43 #if DEBUG
  44 #define ROOTDEVICETIMEOUT       120
  45 #else
  46 #define ROOTDEVICETIMEOUT       60
  47 #endif
  48
  49 extern dev_t mdevadd(int devid, uint64_t base, unsigned int size, int phys);
  50 extern dev_t mdevlookup(int devid);
  51 extern void mdevremoveall(void);
  52 extern void di_root_ramfile(IORegistryEntry * entry);
  53
  54 kern_return_t
  55 IOKitBSDInit( void )
  56 {
  57     IOService::publishResource("IOBSD");
  58
  59     return( kIOReturnSuccess );
  60 }
  61
  62 void
  63 IOServicePublishResource( const char * property, boolean_t value )
  64 {
  65     if ( value)
  66         IOService::publishResource( property, kOSBooleanTrue );
  67     else
  68         IOService::getResourceService()->removeProperty( property );
  69 }
  70
  71 boolean_t
  72 IOServiceWaitForMatchingResource( const char * property, uint64_t timeout )
  73 {
  74     OSDictionary *      dict = 0;
  75     IOService *         match = 0;
  76     boolean_t           found = false;
  77
  78     do {
  79
  80         dict = IOService::resourceMatching( property );
  81         if( !dict)
  82             continue;
  83         match = IOService::waitForMatchingService( dict, timeout );
  84         if ( match)
  85             found = true;
  86
  87     } while( false );
  88
  89     if( dict)
  90         dict->release();
  91     if( match)
  92         match->release();
  93
  94     return( found );
  95 }
  96
  97 boolean_t
  98 IOCatalogueMatchingDriversPresent( const char * property )
  99 {
 100     OSDictionary *      dict = 0;
 101     OSOrderedSet *      set = 0;
 102     SInt32              generationCount = 0;
 103     boolean_t           found = false;
 104
 105     do {
 106
 107         dict = OSDictionary::withCapacity(1);
 108         if( !dict)
 109             continue;
 110         dict->setObject( property, kOSBooleanTrue );
 111         set = gIOCatalogue->findDrivers( dict, &generationCount );
 112         if ( set && (set->getCount() > 0))
 113             found = true;
 114
 115     } while( false );
 116
 117     if( dict)
 118         dict->release();
 119     if( set)
 120         set->release();
 121
 122     return( found );
 123 }
 124
 125 OSDictionary * IOBSDNameMatching( const char * name )
 126 {
 127     OSDictionary *      dict;
 128     const OSSymbol *    str = 0;
 129
 130     do {
 131
 132         dict = IOService::serviceMatching( gIOServiceKey );
 133         if( !dict)
 134             continue;
 135         str = OSSymbol::withCString( name );
 136         if( !str)
 137             continue;
 138         dict->setObject( kIOBSDNameKey, (OSObject *) str );
 139         str->release();
 140
 141         return( dict );
 142
 143     } while( false );
 144
 145     if( dict)
 146         dict->release();
 147     if( str)
 148         str->release();
 149
 150     return( 0 );
 151 }
 152
 153 OSDictionary * IOUUIDMatching( void )
 154 {
 155     return IOService::resourceMatching( "boot-uuid-media" );
 156 }
 157
 158 OSDictionary * IONetworkNamePrefixMatching( const char * prefix )
 159 {
 160     OSDictionary *       matching;
 161     OSDictionary *   propDict = 0;
 162     const OSSymbol * str      = 0;
 163         char networkType[128];
 164
 165     do {
 166         matching = IOService::serviceMatching( "IONetworkInterface" );
 167         if ( matching == 0 )
 168             continue;
 169
 170         propDict = OSDictionary::withCapacity(1);
 171         if ( propDict == 0 )
 172             continue;
 173
 174         str = OSSymbol::withCString( prefix );
 175         if ( str == 0 )
 176             continue;
 177
 178         propDict->setObject( "IOInterfaceNamePrefix", (OSObject *) str );
 179         str->release();
 180         str = 0;
 181
 182                 // see if we're contrained to netroot off of specific network type
 183                 if(PE_parse_boot_argn( "network-type", networkType, 128 ))
 184                 {
 185                         str = OSSymbol::withCString( networkType );
 186                         if(str)
 187                         {
 188                                 propDict->setObject( "IONetworkRootType", str);
 189                                 str->release();
 190                                 str = 0;
 191                         }
 192                 }
 193
 194         if ( matching->setObject( gIOPropertyMatchKey,
 195                                   (OSObject *) propDict ) != true )
 196             continue;
 197
 198         propDict->release();
 199         propDict = 0;
 200
 201         return( matching );
 202
 203     } while ( false );
 204
 205     if ( matching ) matching->release();
 206     if ( propDict ) propDict->release();
 207     if ( str      ) str->release();
 208
 209     return( 0 );
 210 }
 211
 212 static bool IORegisterNetworkInterface( IOService * netif )
 213 {
 214     // A network interface is typically named and registered
 215     // with BSD after receiving a request from a user space
 216     // "namer". However, for cases when the system needs to
 217     // root from the network, this registration task must be
 218     // done inside the kernel and completed before the root
 219     // device is handed to BSD.
 220
 221     IOService *    stack;
 222     OSNumber *     zero    = 0;
 223     OSString *     path    = 0;
 224     OSDictionary * dict    = 0;
 225     char *         pathBuf = 0;
 226     int            len;
 227     enum { kMaxPathLen = 512 };
 228
 229     do {
 230         stack = IOService::waitForService(
 231                 IOService::serviceMatching("IONetworkStack") );
 232         if ( stack == 0 ) break;
 233
 234         dict = OSDictionary::withCapacity(3);
 235         if ( dict == 0 ) break;
 236
 237         zero = OSNumber::withNumber((UInt64) 0, 32);
 238         if ( zero == 0 ) break;
 239
 240         pathBuf = (char *) IOMalloc( kMaxPathLen );
 241         if ( pathBuf == 0 ) break;
 242
 243         len = kMaxPathLen;
 244         if ( netif->getPath( pathBuf, &len, gIOServicePlane )
 245              == false ) break;
 246
 247         path = OSString::withCStringNoCopy( pathBuf );
 248         if ( path == 0 ) break;
 249
 250         dict->setObject( "IOInterfaceUnit", zero );
 251         dict->setObject( kIOPathMatchKey,   path );
 252
 253         stack->setProperties( dict );
 254     }
 255     while ( false );
 256
 257     if ( zero ) zero->release();
 258     if ( path ) path->release();
 259     if ( dict ) dict->release();
 260     if ( pathBuf ) IOFree(pathBuf, kMaxPathLen);
 261
 262         return ( netif->getProperty( kIOBSDNameKey ) != 0 );
 263 }
 264
 265 OSDictionary * IOOFPathMatching( const char * path, char * buf, int maxLen )
 266 {
 267     OSDictionary *      matching = NULL;
 268     OSString *          str;
 269     char *              comp;
 270     int                 len;
 271
 272     do {
 273
 274         len = strlen( kIODeviceTreePlane ":" );
 275         maxLen -= len;
 276         if( maxLen <= 0)
 277             continue;
 278
 279         strlcpy( buf, kIODeviceTreePlane ":", len + 1 );
 280         comp = buf + len;
 281
 282         len = strlen( path );
 283         maxLen -= len;
 284         if( maxLen <= 0)
 285             continue;
 286         strlcpy( comp, path, len + 1 );
 287
 288         matching = OSDictionary::withCapacity( 1 );
 289         if( !matching)
 290             continue;
 291
 292         str = OSString::withCString( buf );
 293         if( !str)
 294             continue;
 295         matching->setObject( kIOPathMatchKey, str );
 296         str->release();
 297
 298         return( matching );
 299
 300     } while( false );
 301
 302     if( matching)
 303         matching->release();
 304
 305     return( 0 );
 306 }
 307
 308 static int didRam = 0;
 309 enum { kMaxPathBuf = 512, kMaxBootVar = 128 };
 310
 311 kern_return_t IOFindBSDRoot( char * rootName, unsigned int rootNameSize,
 312                                 dev_t * root, u_int32_t * oflags )
 313 {
 314     mach_timespec_t     t;
 315     IOService *         service;
 316     IORegistryEntry *   regEntry;
 317     OSDictionary *      matching = 0;
 318     OSString *          iostr;
 319     OSNumber *          off;
 320     OSData *            data = 0;
 321
 322     UInt32              flags = 0;
 323     int                 mnr, mjr;
 324     const char *        mediaProperty = 0;
 325     char *              rdBootVar;
 326     char *              str;
 327     const char *        look = 0;
 328     int                 len;
 329     bool                debugInfoPrintedOnce = false;
 330     const char *        uuidStr = NULL;
 331
 332     static int          mountAttempts = 0;
 333
 334     int xchar, dchar;
 335
 336
 337     if( mountAttempts++)
 338         IOSleep( 5 * 1000 );
 339
 340     str = (char *) IOMalloc( kMaxPathBuf + kMaxBootVar );
 341     if( !str)
 342         return( kIOReturnNoMemory );
 343     rdBootVar = str + kMaxPathBuf;
 344
 345     if (!PE_parse_boot_argn("rd", rdBootVar, kMaxBootVar )
 346      && !PE_parse_boot_argn("rootdev", rdBootVar, kMaxBootVar ))
 347         rdBootVar[0] = 0;
 348
 349     do {
 350         if( (regEntry = IORegistryEntry::fromPath( "/chosen", gIODTPlane ))) {
 351             di_root_ramfile(regEntry);
 352             data = OSDynamicCast(OSData, regEntry->getProperty( "root-matching" ));
 353             if (data) {
 354                matching = OSDynamicCast(OSDictionary, OSUnserializeXML((char *)data->getBytesNoCopy()));
 355                 if (matching) {
 356                     continue;
 357                 }
 358             }
 359
 360             data = (OSData *) regEntry->getProperty( "boot-uuid" );
 361             if( data) {
 362                 uuidStr = (const char*)data->getBytesNoCopy();
 363                 OSString *uuidString = OSString::withCString( uuidStr );
 364
 365                 // match the boot-args boot-uuid processing below
 366                 if( uuidString) {
 367                     IOLog("rooting via boot-uuid from /chosen: %s\n", uuidStr);
 368                     IOService::publishResource( "boot-uuid", uuidString );
 369                     uuidString->release();
 370                     matching = IOUUIDMatching();
 371                     mediaProperty = "boot-uuid-media";
 372                     regEntry->release();
 373                     continue;
 374                 } else {
 375                     uuidStr = NULL;
 376                 }
 377             }
 378             regEntry->release();
 379         }
 380     } while( false );
 381
 382 //
 383 //      See if we have a RAMDisk property in /chosen/memory-map.  If so, make it into a device.
 384 //      It will become /dev/mdx, where x is 0-f.
 385 //
 386
 387         if(!didRam) {                                                                                           /* Have we already build this ram disk? */
 388                 didRam = 1;                                                                                             /* Remember we did this */
 389                 if((regEntry = IORegistryEntry::fromPath( "/chosen/memory-map", gIODTPlane ))) {        /* Find the map node */
 390                         data = (OSData *)regEntry->getProperty("RAMDisk");      /* Find the ram disk, if there */
 391                         if(data) {                                                                                      /* We found one */
 392                                 uintptr_t *ramdParms;
 393                                 ramdParms = (uintptr_t *)data->getBytesNoCopy();        /* Point to the ram disk base and size */
 394                                 (void)mdevadd(-1, ml_static_ptovirt(ramdParms[0]) >> 12, ramdParms[1] >> 12, 0);        /* Initialize it and pass back the device number */
 395                         }
 396                         regEntry->release();                                                            /* Toss the entry */
 397                 }
 398         }
 399
 400 //
 401 //      Now check if we are trying to root on a memory device
 402 //
 403
 404         if((rdBootVar[0] == 'm') && (rdBootVar[1] == 'd') && (rdBootVar[3] == 0)) {
 405                 dchar = xchar = rdBootVar[2];                                                   /* Get the actual device */
 406                 if((xchar >= '0') && (xchar <= '9')) xchar = xchar - '0';       /* If digit, convert */
 407                 else {
 408                         xchar = xchar & ~' ';                                                           /* Fold to upper case */
 409                         if((xchar >= 'A') && (xchar <= 'F')) {                          /* Is this a valid digit? */
 410                                 xchar = (xchar & 0xF) + 9;                                              /* Convert the hex digit */
 411                                 dchar = dchar | ' ';                                                    /* Fold to lower case */
 412                         }
 413                         else xchar = -1;                                                                        /* Show bogus */
 414                 }
 415                 if(xchar >= 0) {                                                                                /* Do we have a valid memory device name? */
 416                         *root = mdevlookup(xchar);                                                      /* Find the device number */
 417                         if(*root >= 0) {                                                                        /* Did we find one? */
 418
 419                                 rootName[0] = 'm';                                                              /* Build root name */
 420                                 rootName[1] = 'd';                                                              /* Build root name */
 421                                 rootName[2] = dchar;                                                    /* Build root name */
 422                                 rootName[3] = 0;                                                                /* Build root name */
 423                                 IOLog("BSD root: %s, major %d, minor %d\n", rootName, major(*root), minor(*root));
 424                                 *oflags = 0;                                                                    /* Show that this is not network */
 425                                 goto iofrootx;                                                                  /* Join common exit... */
 426                         }
 427                         panic("IOFindBSDRoot: specified root memory device, %s, has not been configured\n", rdBootVar); /* Not there */
 428                 }
 429         }
 430
 431       if( (!matching) && rdBootVar[0] ) {
 432         // by BSD name
 433         look = rdBootVar;
 434         if( look[0] == '*')
 435             look++;
 436
 437         if ( strncmp( look, "en", strlen( "en" )) == 0 ) {
 438             matching = IONetworkNamePrefixMatching( "en" );
 439         } else if ( strncmp( look, "uuid", strlen( "uuid" )) == 0 ) {
 440             char *uuid;
 441             OSString *uuidString;
 442
 443             uuid = (char *)IOMalloc( kMaxBootVar );
 444
 445             if ( uuid ) {
 446                 if (!PE_parse_boot_argn( "boot-uuid", uuid, kMaxBootVar )) {
 447                     panic( "rd=uuid but no boot-uuid=<value> specified" );
 448                 }
 449                 uuidString = OSString::withCString( uuid );
 450                 if ( uuidString ) {
 451                     IOService::publishResource( "boot-uuid", uuidString );
 452                     uuidString->release();
 453                     IOLog( "\nWaiting for boot volume with UUID %s\n", uuid );
 454                     matching = IOUUIDMatching();
 455                     mediaProperty = "boot-uuid-media";
 456                 }
 457                 IOFree( uuid, kMaxBootVar );
 458             }
 459         } else {
 460             matching = IOBSDNameMatching( look );
 461         }
 462     }
 463
 464     if( !matching) {
 465         OSString * astring;
 466         // Match any HFS media
 467
 468         matching = IOService::serviceMatching( "IOMedia" );
 469         astring = OSString::withCStringNoCopy("Apple_HFS");
 470         if ( astring ) {
 471             matching->setObject("Content", astring);
 472             astring->release();
 473         }
 474     }
 475
 476     if( true && matching) {
 477         OSSerialize * s = OSSerialize::withCapacity( 5 );
 478
 479         if( matching->serialize( s )) {
 480             IOLog( "Waiting on %s\n", s->text() );
 481             s->release();
 482         }
 483     }
 484
 485     do {
 486         t.tv_sec = ROOTDEVICETIMEOUT;
 487         t.tv_nsec = 0;
 488         matching->retain();
 489         service = IOService::waitForService( matching, &t );
 490         if( (!service) || (mountAttempts == 10)) {
 491             PE_display_icon( 0, "noroot");
 492             IOLog( "Still waiting for root device\n" );
 493
 494             if( !debugInfoPrintedOnce) {
 495                 debugInfoPrintedOnce = true;
 496                 if( gIOKitDebug & kIOLogDTree) {
 497                     IOLog("\nDT plane:\n");
 498                     IOPrintPlane( gIODTPlane );
 499                 }
 500                 if( gIOKitDebug & kIOLogServiceTree) {
 501                     IOLog("\nService plane:\n");
 502                     IOPrintPlane( gIOServicePlane );
 503                 }
 504                 if( gIOKitDebug & kIOLogMemory)
 505                     IOPrintMemory();
 506             }
 507         }
 508     } while( !service);
 509     matching->release();
 510
 511     if ( service && mediaProperty ) {
 512         service = (IOService *)service->getProperty(mediaProperty);
 513     }
 514
 515     mjr = 0;
 516     mnr = 0;
 517
 518     // If the IOService we matched to is a subclass of IONetworkInterface,
 519     // then make sure it has been registered with BSD and has a BSD name
 520     // assigned.
 521
 522     if ( service
 523     &&   service->metaCast( "IONetworkInterface" )
 524     &&   !IORegisterNetworkInterface( service ) )
 525     {
 526         service = 0;
 527     }
 528
 529     if( service) {
 530
 531         len = kMaxPathBuf;
 532         service->getPath( str, &len, gIOServicePlane );
 533         IOLog( "Got boot device = %s\n", str );
 534
 535         iostr = (OSString *) service->getProperty( kIOBSDNameKey );
 536         if( iostr)
 537             strlcpy( rootName, iostr->getCStringNoCopy(), rootNameSize );
 538         off = (OSNumber *) service->getProperty( kIOBSDMajorKey );
 539         if( off)
 540             mjr = off->unsigned32BitValue();
 541         off = (OSNumber *) service->getProperty( kIOBSDMinorKey );
 542         if( off)
 543             mnr = off->unsigned32BitValue();
 544
 545         if( service->metaCast( "IONetworkInterface" ))
 546             flags |= 1;
 547
 548     } else {
 549
 550         IOLog( "Wait for root failed\n" );
 551         strlcpy( rootName, "en0", rootNameSize );
 552         flags |= 1;
 553     }
 554
 555     IOLog( "BSD root: %s", rootName );
 556     if( mjr)
 557         IOLog(", major %d, minor %d\n", mjr, mnr );
 558     else
 559         IOLog("\n");
 560
 561     *root = makedev( mjr, mnr );
 562     *oflags = flags;
 563
 564     IOFree( str,  kMaxPathBuf + kMaxBootVar );
 565
 566 iofrootx:
 567     if( (gIOKitDebug & (kIOLogDTree | kIOLogServiceTree | kIOLogMemory)) && !debugInfoPrintedOnce) {
 568
 569         IOService::getPlatform()->waitQuiet();
 570         if( gIOKitDebug & kIOLogDTree) {
 571             IOLog("\nDT plane:\n");
 572             IOPrintPlane( gIODTPlane );
 573         }
 574         if( gIOKitDebug & kIOLogServiceTree) {
 575             IOLog("\nService plane:\n");
 576             IOPrintPlane( gIOServicePlane );
 577         }
 578         if( gIOKitDebug & kIOLogMemory)
 579             IOPrintMemory();
 580     }
 581
 582     return( kIOReturnSuccess );
 583 }
 584
 585 bool IORamDiskBSDRoot(void)
 586 {
 587     char rdBootVar[kMaxBootVar];
 588     if (PE_parse_boot_argn("rd", rdBootVar, kMaxBootVar )
 589      || PE_parse_boot_argn("rootdev", rdBootVar, kMaxBootVar )) {
 590         if((rdBootVar[0] == 'm') && (rdBootVar[1] == 'd') && (rdBootVar[3] == 0)) {
 591             return true;
 592         }
 593     }
 594     return false;
 595 }
 596
 597 void IOSecureBSDRoot(const char * rootName)
 598 {
 599 }
 600
 601 void *
 602 IOBSDRegistryEntryForDeviceTree(char * path)
 603 {
 604     return (IORegistryEntry::fromPath(path, gIODTPlane));
 605 }
 606
 607 void
 608 IOBSDRegistryEntryRelease(void * entry)
 609 {
 610     IORegistryEntry * regEntry = (IORegistryEntry *)entry;
 611
 612     if (regEntry)
 613         regEntry->release();
 614     return;
 615 }
 616
 617 const void *
 618 IOBSDRegistryEntryGetData(void * entry, char * property_name,
 619                           int * packet_length)
 620 {
 621     OSData *            data;
 622     IORegistryEntry *   regEntry = (IORegistryEntry *)entry;
 623
 624     data = (OSData *) regEntry->getProperty(property_name);
 625     if (data) {
 626         *packet_length = data->getLength();
 627         return (data->getBytesNoCopy());
 628     }
 629     return (NULL);
 630 }
 631
 632 kern_return_t IOBSDGetPlatformUUID( uuid_t uuid, mach_timespec_t timeout )
 633 {
 634     IOService * resources;
 635     OSString *  string;
 636
 637     resources = IOService::waitForService( IOService::resourceMatching( kIOPlatformUUIDKey ), ( timeout.tv_sec || timeout.tv_nsec ) ? &timeout : 0 );
 638     if ( resources == 0 ) return KERN_OPERATION_TIMED_OUT;
 639
 640     string = ( OSString * ) IOService::getPlatform( )->getProvider( )->getProperty( kIOPlatformUUIDKey );
 641     if ( string == 0 ) return KERN_NOT_SUPPORTED;
 642
 643     uuid_parse( string->getCStringNoCopy( ), uuid );
 644
 645     return KERN_SUCCESS;
 646 }
 647
 648 kern_return_t IOBSDGetPlatformSerialNumber( char *serial_number_str, u_int32_t len )
 649 {
 650     OSDictionary * platform_dict;
 651     IOService *platform;
 652     OSString *  string;
 653
 654     if (len < 1) {
 655             return 0;
 656     }
 657     serial_number_str[0] = '\0';
 658
 659     platform_dict = IOService::serviceMatching( "IOPlatformExpertDevice" );
 660     if (platform_dict == NULL) {
 661             return KERN_NOT_SUPPORTED;
 662     }
 663
 664     platform = IOService::waitForService( platform_dict );
 665     if (platform) {
 666             string = ( OSString * ) platform->getProperty( kIOPlatformSerialNumberKey );
 667             if ( string == 0 ) {
 668                     return KERN_NOT_SUPPORTED;
 669             } else {
 670                     strlcpy( serial_number_str, string->getCStringNoCopy( ), len );
 671             }
 672     }
 673
 674     return KERN_SUCCESS;
 675 }
 676
 677 void IOBSDIterateMediaWithContent(const char *content_uuid_cstring, int (*func)(const char *bsd_dev_name, const char *uuid_str, void *arg), void *arg)
 678 {
 679     OSDictionary *dictionary;
 680     OSString *content_uuid_string;
 681
 682     dictionary = IOService::serviceMatching( "IOMedia" );
 683     if( dictionary ) {
 684         content_uuid_string = OSString::withCString( content_uuid_cstring );
 685         if( content_uuid_string ) {
 686             IOService *service;
 687             OSIterator *iter;
 688
 689             dictionary->setObject( "Content", content_uuid_string );
 690             dictionary->retain();
 691
 692             iter = IOService::getMatchingServices(dictionary);
 693             while (iter && (service = (IOService *)iter->getNextObject())) {
 694                     if( service ) {
 695                             OSString *iostr = (OSString *) service->getProperty( kIOBSDNameKey );
 696                             OSString *uuidstr = (OSString *) service->getProperty( "UUID" );
 697                             const char *uuid;
 698
 699                             if( iostr) {
 700                                     if (uuidstr) {
 701                                             uuid = uuidstr->getCStringNoCopy();
 702                                     } else {
 703                                             uuid = "00000000-0000-0000-0000-000000000000";
 704                                     }
 705
 706                                     // call the callback
 707                                     if (func && func(iostr->getCStringNoCopy(), uuid, arg) == 0) {
 708                                             break;
 709                                     }
 710                             }
 711                     }
 712             }
 713             if (iter)
 714                     iter->release();
 715
 716             content_uuid_string->release();
 717         }
 718         dictionary->release();
 719     }
 720 }
 721
 722
 723 int IOBSDIsMediaEjectable( const char *cdev_name )
 724 {
 725     int ret = 0;
 726     OSDictionary *dictionary;
 727     OSString *dev_name;
 728
 729     if (strncmp(cdev_name, "/dev/", 5) == 0) {
 730             cdev_name += 5;
 731     }
 732
 733     dictionary = IOService::serviceMatching( "IOMedia" );
 734     if( dictionary ) {
 735         dev_name = OSString::withCString( cdev_name );
 736         if( dev_name ) {
 737             IOService *service;
 738             mach_timespec_t tv = { 5, 0 };    // wait up to "timeout" seconds for the device
 739
 740             dictionary->setObject( kIOBSDNameKey, dev_name );
 741             dictionary->retain();
 742             service = IOService::waitForService( dictionary, &tv );
 743             if( service ) {
 744                 OSBoolean *ejectable = (OSBoolean *) service->getProperty( "Ejectable" );
 745
 746                 if( ejectable ) {
 747                         ret = (int)ejectable->getValue();
 748                 }
 749
 750             }
 751             dev_name->release();
 752         }
 753         dictionary->release();
 754     }
 755
 756     return ret;
 757 }
 758
 759 } /* extern "C" */