]> git.saurik.com Git - apple/xnu.git/blobdiff - iokit/bsddev/IOKitBSDInit.cpp
xnu-3789.1.32.tar.gz
[apple/xnu.git] / iokit / bsddev / IOKitBSDInit.cpp
index feffd1a9e44f1fd86a4d060d54e07bd95fc28472..a35aa54953d13e7328de76b3739e4b57de405b45 100644 (file)
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1998-2008 Apple Inc. All rights reserved.
+ * Copyright (c) 1998-2011 Apple Inc. All rights reserved.
  *
  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
  * 
 #include <IOKit/IODeviceTreeSupport.h>
 #include <IOKit/IOKitKeys.h>
 #include <IOKit/IOPlatformExpert.h>
+#include <IOKit/IOUserClient.h>
 
 extern "C" {
 
 #include <pexpert/pexpert.h>
 #include <kern/clock.h>
 #include <uuid/uuid.h>
+#include <sys/vnode_internal.h>
+#include <sys/mount.h>
 
 // how long to wait for matching root device, secs
 #if DEBUG
@@ -46,11 +49,40 @@ extern "C" {
 #define ROOTDEVICETIMEOUT       60
 #endif
 
+int panic_on_exception_triage = 0;
+
 extern dev_t mdevadd(int devid, uint64_t base, unsigned int size, int phys);
 extern dev_t mdevlookup(int devid);
 extern void mdevremoveall(void);
+extern int mdevgetrange(int devid, uint64_t *base, uint64_t *size);
 extern void di_root_ramfile(IORegistryEntry * entry);
 
+
+#if   DEVELOPMENT
+#define IOPOLLED_COREFILE      1
+// no sizing
+#define kIOCoreDumpSize                0ULL
+#define kIOCoreDumpFreeSize    0ULL
+#else
+#define IOPOLLED_COREFILE      0
+#endif
+
+
+#if IOPOLLED_COREFILE
+static bool 
+NewKernelCoreMedia(void * target, void * refCon,
+                  IOService * newService,
+                  IONotifier * notifier);
+#endif /* IOPOLLED_COREFILE */
+
+#if CONFIG_KDP_INTERACTIVE_DEBUGGING
+/*
+ * Touched by IOFindBSDRoot() if a RAMDisk is used for the root device.
+ */
+extern uint64_t kdp_core_ramdisk_addr;
+extern uint64_t kdp_core_ramdisk_size;
+#endif
+
 kern_return_t
 IOKitBSDInit( void )
 {
@@ -155,83 +187,6 @@ OSDictionary * IOUUIDMatching( void )
     return IOService::resourceMatching( "boot-uuid-media" );
 }
 
-
-OSDictionary * IOCDMatching( void )
-{
-    OSDictionary *     dict;
-    const OSSymbol *   str;
-    
-    dict = IOService::serviceMatching( "IOMedia" );
-    if( dict == 0 ) {
-        IOLog("Unable to find IOMedia\n");
-        return 0;
-    }
-    
-    str = OSSymbol::withCString( "CD_ROM_Mode_1" );
-    if( str == 0 ) {
-        dict->release();
-        return 0;
-    }
-    
-    dict->setObject( "Content Hint", (OSObject *)str );
-    str->release();        
-    return( dict );
-}
-
-OSDictionary * IONetworkMatching(  const char * path,
-                                  char * buf, int maxLen )
-{
-    OSDictionary *     matching = 0;
-    OSDictionary *     dict;
-    OSString *         str;
-    char *             comp;
-    const char *       skip;
-    int                        len;
-
-    do {
-
-       len = strlen( kIODeviceTreePlane ":" );
-       maxLen -= len;
-       if( maxLen <= 0)
-           continue;
-
-       strlcpy( buf, kIODeviceTreePlane ":", len + 1 );
-       comp = buf + len;
-
-        // remove parameters following ':' from the path
-        skip = strchr( path, ':');
-       if( !skip)
-           continue;
-
-        len = skip - path;
-       maxLen -= len;
-       if( maxLen <= 0)
-           continue;
-       strlcpy( comp, path, len + 1 );
-
-       matching = IOService::serviceMatching( "IONetworkInterface" );
-       if( !matching)
-           continue;
-       dict = IOService::addLocation( matching );
-       if( !dict)
-           continue;
-
-       str = OSString::withCString( buf );
-       if( !str)
-           continue;
-        dict->setObject( kIOPathMatchKey, str );
-       str->release();
-
-       return( matching );
-
-    } while( false );
-
-    if( matching)
-        matching->release();
-
-    return( 0 );
-}
-
 OSDictionary * IONetworkNamePrefixMatching( const char * prefix )
 {
     OSDictionary *      matching;
@@ -339,121 +294,13 @@ static bool IORegisterNetworkInterface( IOService * netif )
        return ( netif->getProperty( kIOBSDNameKey ) != 0 );
 }
 
-OSDictionary * IODiskMatching( const char * path, char * buf, int maxLen )
-{
-    const char * look;
-    const char * alias;
-    char *       comp;
-    long         unit = -1;
-    long         partition = -1;
-    long                lun = -1;
-    char         c;
-    int          len;
-
-    // scan the tail of the path for "@unit:partition"
-    do {
-        // Have to get the full path to the controller - an alias may
-        // tell us next to nothing, like "hd:8"
-        alias = IORegistryEntry::dealiasPath( &path, gIODTPlane );
-               
-        look = path + strlen( path);
-        c = ':';
-        while( look != path) {
-            if( *(--look) == c) {
-                if( c == ':') {
-                    partition = strtol( look + 1, 0, 0 );
-                    c = '@';
-                } else if( c == '@') {
-                    unit = strtol( look + 1, &comp, 16 );
-
-                    if( *comp == ',') {
-                        lun = strtol( comp + 1, 0, 16 );
-                    }
-                    
-                    c = '/';
-                } else if( c == '/') {
-                    c = 0;
-                    break;
-                }
-            }
-
-               if( alias && (look == path)) {
-                path = alias;
-                look = path + strlen( path);
-                alias = 0;
-            }
-        }
-        if( c || unit == -1 || partition == -1)
-            continue;
-               
-        len = strlen( "{" kIOPathMatchKey "='" kIODeviceTreePlane ":" );
-        maxLen -= len;
-        if( maxLen <= 0)
-            continue;
-
-        snprintf( buf, len + 1, "{" kIOPathMatchKey "='" kIODeviceTreePlane ":" );
-        comp = buf + len;
-
-        if( alias) {
-            len = strlen( alias );
-            maxLen -= len;
-            if( maxLen <= 0)
-                continue;
-
-            strlcpy( comp, alias, len + 1 );
-            comp += len;
-        }
-
-        if ( (look - path)) {
-            len = (look - path);
-            maxLen -= len;
-            if( maxLen <= 0)
-                continue;
-
-            strlcpy( comp, path, len + 1 );
-            comp += len;
-        }
-                       
-        if ( lun != -1 )
-        {
-            len = strlen( "/@hhhhhhhh,hhhhhhhh:dddddddddd';}" );
-            maxLen -= len;
-            if( maxLen <= 0)
-                continue;
-
-            snprintf( comp, len + 1, "/@%lx,%lx:%ld';}", unit, lun, partition );
-        }
-        else
-        {
-            len = strlen( "/@hhhhhhhh:dddddddddd';}" );
-            maxLen -= len;
-            if( maxLen <= 0)
-                continue;
-
-            snprintf( comp, len + 1, "/@%lx:%ld';}", unit, partition );
-        }
-               
-        return( OSDynamicCast(OSDictionary, OSUnserialize( buf, 0 )) );
-
-    } while( false );
-
-    return( 0 );
-}
-
 OSDictionary * IOOFPathMatching( const char * path, char * buf, int maxLen )
 {
-    OSDictionary *     matching;
+    OSDictionary *     matching = NULL;
     OSString *         str;
     char *             comp;
     int                        len;
 
-    /* need to look up path, get device type,
-        call matching help based on device type */
-
-    matching = IODiskMatching( path, buf, maxLen );
-    if( matching)
-       return( matching );
-
     do {
 
        len = strlen( kIODeviceTreePlane ":" );
@@ -490,43 +337,8 @@ OSDictionary * IOOFPathMatching( const char * path, char * buf, int maxLen )
     return( 0 );
 }
 
-IOService * IOFindMatchingChild( IOService * service )
-{
-    // find a matching child service
-    IOService * child = 0;
-    OSIterator * iter = service->getClientIterator();
-    if ( iter ) {
-        while( ( child = (IOService *) iter->getNextObject() ) ) {
-            OSDictionary * dict = OSDictionary::withCapacity( 1 );
-            if( dict == 0 ) {
-                iter->release();
-                return 0;
-            }
-            const OSSymbol * str = OSSymbol::withCString( "Apple_HFS" );
-            if( str == 0 ) {
-                dict->release();
-                iter->release();
-                return 0;
-            }
-            dict->setObject( "Content", (OSObject *)str );
-            str->release();
-            if ( child->compareProperty( dict, "Content" ) ) {
-                dict->release();
-                break;
-            }
-            dict->release();
-            IOService * subchild = IOFindMatchingChild( child );
-            if ( subchild ) {
-                child = subchild;
-                break;
-            }
-        }
-        iter->release();
-    }
-    return child;
-}
-
 static int didRam = 0;
+enum { kMaxPathBuf = 512, kMaxBootVar = 128 };
 
 kern_return_t IOFindBSDRoot( char * rootName, unsigned int rootNameSize,
                                dev_t * root, u_int32_t * oflags )
@@ -538,28 +350,39 @@ kern_return_t IOFindBSDRoot( char * rootName, unsigned int rootNameSize,
     OSString *         iostr;
     OSNumber *         off;
     OSData *           data = 0;
-    UInt32             *ramdParms = 0;
 
     UInt32             flags = 0;
     int                        mnr, mjr;
-    bool               findHFSChild = false;
     const char *        mediaProperty = 0;
     char *             rdBootVar;
-    enum {             kMaxPathBuf = 512, kMaxBootVar = 128 };
     char *             str;
     const char *       look = 0;
     int                        len;
-    bool               forceNet = false;
     bool               debugInfoPrintedOnce = false;
     const char *       uuidStr = NULL;
 
     static int         mountAttempts = 0;
                                
     int xchar, dchar;
-                                    
+
+    // stall here for anyone matching on the IOBSD resource to finish (filesystems)
+    matching = IOService::serviceMatching(gIOResourcesKey);
+    assert(matching);
+    matching->setObject(gIOResourceMatchedKey, gIOBSDKey);
+
+       if ((service = IOService::waitForMatchingService(matching, 30ULL * kSecondScale))) {
+               service->release();
+       } else {
+               IOLog("!BSD\n");
+       }
+    matching->release();
+       matching = NULL;
 
     if( mountAttempts++)
+    {
+        IOLog("mount(%d) failed\n", mountAttempts);
        IOSleep( 5 * 1000 );
+    }
 
     str = (char *) IOMalloc( kMaxPathBuf + kMaxBootVar );
     if( !str)
@@ -599,34 +422,10 @@ kern_return_t IOFindBSDRoot( char * rootName, unsigned int rootNameSize,
                    uuidStr = NULL;
                }
            }
-
-           // else try for an OF Path
-           data = (OSData *) regEntry->getProperty( "rootpath" );
-           regEntry->release();
-           if( data) continue;
-       }
-        if( (regEntry = IORegistryEntry::fromPath( "/options", gIODTPlane ))) {
-           data = (OSData *) regEntry->getProperty( "boot-file" );
            regEntry->release();
-           if( data) continue;
        }
     } while( false );
 
-    if( data && !uuidStr)
-        look = (const char *) data->getBytesNoCopy();
-
-    if( rdBootVar[0] == '*') {
-        look = rdBootVar + 1;
-               forceNet = false;
-    } else {
-        if( (regEntry = IORegistryEntry::fromPath( "/", gIODTPlane ))) {
-            forceNet = (0 != regEntry->getProperty( "net-boot" ));
-               regEntry->release();
-               }
-    }
-
-
-
 //
 //     See if we have a RAMDisk property in /chosen/memory-map.  If so, make it into a device.
 //     It will become /dev/mdx, where x is 0-f. 
@@ -637,8 +436,8 @@ kern_return_t IOFindBSDRoot( char * rootName, unsigned int rootNameSize,
                if((regEntry = IORegistryEntry::fromPath( "/chosen/memory-map", gIODTPlane ))) {        /* Find the map node */
                        data = (OSData *)regEntry->getProperty("RAMDisk");      /* Find the ram disk, if there */
                        if(data) {                                                                                      /* We found one */
-
-                               ramdParms = (UInt32 *)data->getBytesNoCopy();   /* Point to the ram disk base and size */
+                               uintptr_t *ramdParms;
+                               ramdParms = (uintptr_t *)data->getBytesNoCopy();        /* Point to the ram disk base and size */
                                (void)mdevadd(-1, ml_static_ptovirt(ramdParms[0]) >> 12, ramdParms[1] >> 12, 0);        /* Initialize it and pass back the device number */
                        }
                        regEntry->release();                                                            /* Toss the entry */
@@ -663,32 +462,28 @@ kern_return_t IOFindBSDRoot( char * rootName, unsigned int rootNameSize,
                if(xchar >= 0) {                                                                                /* Do we have a valid memory device name? */
                        *root = mdevlookup(xchar);                                                      /* Find the device number */
                        if(*root >= 0) {                                                                        /* Did we find one? */
-
                                rootName[0] = 'm';                                                              /* Build root name */
                                rootName[1] = 'd';                                                              /* Build root name */
                                rootName[2] = dchar;                                                    /* Build root name */
                                rootName[3] = 0;                                                                /* Build root name */
                                IOLog("BSD root: %s, major %d, minor %d\n", rootName, major(*root), minor(*root));
                                *oflags = 0;                                                                    /* Show that this is not network */
+
+#if CONFIG_KDP_INTERACTIVE_DEBUGGING
+                /* retrieve final ramdisk range and initialize KDP variables */
+                if (mdevgetrange(xchar, &kdp_core_ramdisk_addr, &kdp_core_ramdisk_size) != 0) {
+                    IOLog("Unable to retrieve range for root memory device %d\n", xchar);
+                    kdp_core_ramdisk_addr = 0;
+                    kdp_core_ramdisk_size = 0;
+                }
+#endif
+
                                goto iofrootx;                                                                  /* Join common exit... */
                        }
                        panic("IOFindBSDRoot: specified root memory device, %s, has not been configured\n", rdBootVar); /* Not there */
                }
        }
 
-    if( look) {
-       // from OpenFirmware path
-       IOLog("From path: \"%s\", ", look);
-
-        if (!matching) {
-            if( forceNet || (0 == strncmp( look, "enet", strlen( "enet" ))) ) {
-                matching = IONetworkMatching( look, str, kMaxPathBuf );
-            } else {
-                matching = IODiskMatching( look, str, kMaxPathBuf );
-            }
-        }
-    }
-    
       if( (!matching) && rdBootVar[0] ) {
        // by BSD name
        look = rdBootVar;
@@ -697,10 +492,7 @@ kern_return_t IOFindBSDRoot( char * rootName, unsigned int rootNameSize,
     
        if ( strncmp( look, "en", strlen( "en" )) == 0 ) {
            matching = IONetworkNamePrefixMatching( "en" );
-       } else if ( strncmp( look, "cdrom", strlen( "cdrom" )) == 0 ) {
-            matching = IOCDMatching();
-            findHFSChild = true;
-        } else if ( strncmp( look, "uuid", strlen( "uuid" )) == 0 ) {
+       } else if ( strncmp( look, "uuid", strlen( "uuid" )) == 0 ) {
             char *uuid;
             OSString *uuidString;
 
@@ -737,6 +529,11 @@ kern_return_t IOFindBSDRoot( char * rootName, unsigned int rootNameSize,
         }
     }
 
+    if( gIOKitDebug & kIOWaitQuietBeforeRoot ) {
+       IOLog( "Waiting for matching to complete\n" );
+       IOService::getPlatform()->waitQuiet();
+    }
+
     if( true && matching) {
         OSSerialize * s = OSSerialize::withCapacity( 5 );
 
@@ -772,25 +569,7 @@ kern_return_t IOFindBSDRoot( char * rootName, unsigned int rootNameSize,
     } while( !service);
     matching->release();
 
-    if ( service && findHFSChild ) {
-        bool waiting = true;
-        uint64_t    timeoutNS;
-
-        // wait for children services to finish registering
-        while ( waiting ) {
-            timeoutNS = ROOTDEVICETIMEOUT;
-            timeoutNS *= kSecondScale;
-            
-            if ( (service->waitQuiet(timeoutNS) ) == kIOReturnSuccess) {
-                waiting = false;
-            } else {
-                IOLog( "Waiting for child registration\n" );
-            }
-        }
-        // look for a subservice with an Apple_HFS child
-        IOService * subservice = IOFindMatchingChild( service );
-        if ( subservice ) service = subservice;
-    } else if ( service && mediaProperty ) {
+    if ( service && mediaProperty ) {
         service = (IOService *)service->getProperty(mediaProperty);
     }
 
@@ -864,23 +643,20 @@ iofrootx:
     return( kIOReturnSuccess );
 }
 
+bool IORamDiskBSDRoot(void)
+{
+    char rdBootVar[kMaxBootVar];
+    if (PE_parse_boot_argn("rd", rdBootVar, kMaxBootVar )
+     || PE_parse_boot_argn("rootdev", rdBootVar, kMaxBootVar )) {
+        if((rdBootVar[0] == 'm') && (rdBootVar[1] == 'd') && (rdBootVar[3] == 0)) {
+            return true;
+        }
+    }
+    return false;
+}
+
 void IOSecureBSDRoot(const char * rootName)
 {
-#if CONFIG_EMBEDDED
-    IOReturn         result;
-    IOPlatformExpert *pe;
-    const OSSymbol   *functionName = OSSymbol::withCStringNoCopy("SecureRootName");
-    
-    while ((pe = IOService::getPlatform()) == 0) IOSleep(1 * 1000);
-    
-    // Returns kIOReturnNotPrivileged is the root device is not secure.
-    // Returns kIOReturnUnsupported if "SecureRootName" is not implemented.
-    result = pe->callPlatformFunction(functionName, false, (void *)rootName, (void *)0, (void *)0, (void *)0);
-    
-    functionName->release();
-    
-    if (result == kIOReturnNotPrivileged) mdevremoveall();
-#endif
 }
 
 void *
@@ -930,156 +706,160 @@ kern_return_t IOBSDGetPlatformUUID( uuid_t uuid, mach_timespec_t timeout )
     return KERN_SUCCESS;
 }
 
-kern_return_t IOBSDGetPlatformSerialNumber( char *serial_number_str, u_int32_t len )
+} /* extern "C" */
+
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+#include <sys/conf.h>
+#include <sys/vnode.h>
+#include <sys/vnode_internal.h>
+#include <sys/fcntl.h>
+#include <IOKit/IOPolledInterface.h>
+#include <IOKit/IOBufferMemoryDescriptor.h>
+
+IOPolledFileIOVars * gIOPolledCoreFileVars;
+
+#if IOPOLLED_COREFILE
+
+static IOReturn 
+IOOpenPolledCoreFile(const char * filename)
 {
-    OSDictionary * platform_dict;
-    IOService *platform;
-    OSString *  string;
+    IOReturn err;
+    unsigned int debug;
 
-    if (len < 1) {
-           return 0;
-    }
-    serial_number_str[0] = '\0';
+    if (gIOPolledCoreFileVars)                             return (kIOReturnBusy);
+    if (!IOPolledInterface::gMetaClass.getInstanceCount()) return (kIOReturnUnsupported);
 
-    platform_dict = IOService::serviceMatching( "IOPlatformExpertDevice" );
-    if (platform_dict == NULL) {
-           return KERN_NOT_SUPPORTED;
-    }
+    debug = 0;
+    PE_parse_boot_argn("debug", &debug, sizeof (debug));
+    if (DB_DISABLE_LOCAL_CORE & debug)                     return (kIOReturnUnsupported);
 
-    platform = IOService::waitForService( platform_dict );
-    if (platform) {
-           string = ( OSString * ) platform->getProperty( kIOPlatformSerialNumberKey );
-           if ( string == 0 ) {
-                   return KERN_NOT_SUPPORTED;
-           } else {
-                   strlcpy( serial_number_str, string->getCStringNoCopy( ), len );
-           }
+    err = IOPolledFileOpen(filename, kIOCoreDumpSize, kIOCoreDumpFreeSize,
+                           NULL, 0,
+                           &gIOPolledCoreFileVars, NULL, NULL, 0);
+    if (kIOReturnSuccess != err)                           return (err);
+
+    err = IOPolledFilePollersSetup(gIOPolledCoreFileVars, kIOPolledPreflightCoreDumpState);
+    if (kIOReturnSuccess != err)
+    {
+       IOPolledFileClose(&gIOPolledCoreFileVars, NULL, NULL, 0, 0, 0);
     }
-    
-    return KERN_SUCCESS;
+
+    return (err);
 }
 
-dev_t IOBSDGetMediaWithUUID( const char *uuid_cstring, char *bsd_name, int bsd_name_len, int timeout)
+static void 
+IOClosePolledCoreFile(void)
 {
-    dev_t dev = 0;
-    OSDictionary *dictionary;
-    OSString *uuid_string;
+    IOPolledFilePollersClose(gIOPolledCoreFileVars, kIOPolledPostflightCoreDumpState);
+    IOPolledFileClose(&gIOPolledCoreFileVars, NULL, NULL, 0, 0, 0);
+}
 
-    if (bsd_name_len < 1) {
-       return 0;
-    }
-    bsd_name[0] = '\0';
-    
-    dictionary = IOService::serviceMatching( "IOMedia" );
-    if( dictionary ) {
-       uuid_string = OSString::withCString( uuid_cstring );
-       if( uuid_string ) {
-           IOService *service;
-           mach_timespec_t tv = { timeout, 0 };    // wait up to "timeout" seconds for the device
-
-           dictionary->setObject( "UUID", uuid_string );
-           dictionary->retain();
-           service = IOService::waitForService( dictionary, &tv );
-           if( service ) {
-               OSNumber *dev_major = (OSNumber *) service->getProperty( kIOBSDMajorKey );
-               OSNumber *dev_minor = (OSNumber *) service->getProperty( kIOBSDMinorKey );
-               OSString *iostr = (OSString *) service->getProperty( kIOBSDNameKey );
-
-               if( iostr)
-                   strlcpy( bsd_name, iostr->getCStringNoCopy(), bsd_name_len );
-
-               if ( dev_major && dev_minor )
-                   dev = makedev( dev_major->unsigned32BitValue(), dev_minor->unsigned32BitValue() );
-           }
-           uuid_string->release();
-       }
-       dictionary->release();
+static thread_call_t gIOOpenPolledCoreFileTC;
+static IONotifier  * gIOPolledCoreFileNotifier;
+static IONotifier  * gIOPolledCoreFileInterestNotifier;
+
+static IOReturn 
+KernelCoreMediaInterest(void * target, void * refCon,
+                       UInt32 messageType, IOService * provider,
+                       void * messageArgument, vm_size_t argSize )
+{
+    if (kIOMessageServiceIsTerminated == messageType)
+    {
+       gIOPolledCoreFileInterestNotifier->remove();
+       gIOPolledCoreFileInterestNotifier = 0;
+       IOClosePolledCoreFile();
     }
 
-    return dev;
+    return (kIOReturnSuccess);
 }
 
+static void
+OpenKernelCoreMedia(thread_call_param_t p0, thread_call_param_t p1)
+{
+    IOService * newService;
+    OSString  * string;
+    char        filename[16];
+
+    newService = (IOService *) p1;
+    do
+    {
+       if (gIOPolledCoreFileVars) break;
+       string = OSDynamicCast(OSString, newService->getProperty(kIOBSDNameKey));
+       if (!string) break;
+       snprintf(filename, sizeof(filename), "/dev/%s", string->getCStringNoCopy());
+       if (kIOReturnSuccess != IOOpenPolledCoreFile(filename)) break;
+       gIOPolledCoreFileInterestNotifier = newService->registerInterest(
+                               gIOGeneralInterest, &KernelCoreMediaInterest, NULL, 0);
+    }
+    while (false);
+
+    newService->release();
+}
 
-void IOBSDIterateMediaWithContent(const char *content_uuid_cstring, int (*func)(const char *bsd_dev_name, const char *uuid_str, void *arg), void *arg)
+static bool 
+NewKernelCoreMedia(void * target, void * refCon,
+                  IOService * newService,
+                  IONotifier * notifier)
 {
-    OSDictionary *dictionary;
-    OSString *content_uuid_string;
-
-    dictionary = IOService::serviceMatching( "IOMedia" );
-    if( dictionary ) {
-       content_uuid_string = OSString::withCString( content_uuid_cstring );
-       if( content_uuid_string ) {
-           IOService *service;
-           OSIterator *iter;
-
-           dictionary->setObject( "Content", content_uuid_string );
-           dictionary->retain();
-
-           iter = IOService::getMatchingServices(dictionary);
-           while (iter && (service = (IOService *)iter->getNextObject())) {
-                   if( service ) {
-                           OSString *iostr = (OSString *) service->getProperty( kIOBSDNameKey );
-                           OSString *uuidstr = (OSString *) service->getProperty( "UUID" );
-                           const char *uuid;
-
-                           if( iostr) {
-                                   if (uuidstr) {
-                                           uuid = uuidstr->getCStringNoCopy();
-                                   } else {
-                                           uuid = "00000000-0000-0000-0000-000000000000";
-                                   }
-
-                                   // call the callback
-                                   if (func && func(iostr->getCStringNoCopy(), uuid, arg) == 0) {
-                                           break;
-                                   }
-                           }
-                   }
-           }
-           if (iter)
-                   iter->release();
-           
-           content_uuid_string->release();
-       }
-       dictionary->release();
+    static volatile UInt32 onlyOneCorePartition = 0;
+    do
+    {
+       if (!OSCompareAndSwap(0, 1, &onlyOneCorePartition)) break;
+       if (gIOPolledCoreFileVars)    break;
+        if (!gIOOpenPolledCoreFileTC) break;
+        newService = newService->getProvider();
+        if (!newService)              break;
+        newService->retain();
+       thread_call_enter1(gIOOpenPolledCoreFileTC, newService);
     }
+    while (false);
+
+    return (false);
 }
 
+#endif /* IOPOLLED_COREFILE */
 
-int IOBSDIsMediaEjectable( const char *cdev_name )
+extern "C" void 
+IOBSDMountChange(struct mount * mp, uint32_t op)
 {
-    int ret = 0;
-    OSDictionary *dictionary;
-    OSString *dev_name;
+#if IOPOLLED_COREFILE
+
+    OSDictionary * bsdMatching;
+    OSDictionary * mediaMatching;
+    OSString     * string;
 
-    if (strncmp(cdev_name, "/dev/", 5) == 0) {
-           cdev_name += 5;
+    if (!gIOPolledCoreFileNotifier) do
+    {
+       if (!gIOOpenPolledCoreFileTC) gIOOpenPolledCoreFileTC = thread_call_allocate(&OpenKernelCoreMedia, NULL);
+       bsdMatching = IOService::serviceMatching("IOMediaBSDClient");
+       if (!bsdMatching) break;
+       mediaMatching = IOService::serviceMatching("IOMedia");
+       string = OSString::withCStringNoCopy("5361644D-6163-11AA-AA11-00306543ECAC");
+       if (!string || !mediaMatching) break;
+       mediaMatching->setObject("Content", string);
+       string->release();
+       bsdMatching->setObject(gIOParentMatchKey, mediaMatching);
+       mediaMatching->release();
+
+       gIOPolledCoreFileNotifier = IOService::addMatchingNotification(
+                                                 gIOFirstMatchNotification, bsdMatching, 
+                                                 &NewKernelCoreMedia, NULL, NULL, -1000);
     }
+    while (false);
 
-    dictionary = IOService::serviceMatching( "IOMedia" );
-    if( dictionary ) {
-       dev_name = OSString::withCString( cdev_name );
-       if( dev_name ) {
-           IOService *service;
-           mach_timespec_t tv = { 5, 0 };    // wait up to "timeout" seconds for the device
-
-           dictionary->setObject( kIOBSDNameKey, dev_name );
-           dictionary->retain();
-           service = IOService::waitForService( dictionary, &tv );
-           if( service ) {
-               OSBoolean *ejectable = (OSBoolean *) service->getProperty( "Ejectable" );
-
-               if( ejectable ) {
-                       ret = (int)ejectable->getValue();
-               }
+#endif /* IOPOLLED_COREFILE */
+}
 
-           }
-           dev_name->release();
-       }
-       dictionary->release();
-    }
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
 
-    return ret;
+extern "C" boolean_t 
+IOTaskHasEntitlement(task_t task, const char * entitlement)
+{
+    OSObject * obj;
+    obj = IOUserClient::copyClientEntitlement(task, entitlement);
+    if (!obj) return (false);
+    obj->release();
+    return (obj != kOSBooleanFalse);
 }
 
-} /* extern "C" */