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iokit/bsddev/IOKitBSDInit.cpp xnu-344.49 xnu-2050.9.2
--- xnu/xnu-344.49/iokit/bsddev/IOKitBSDInit.cpp
+++ xnu/xnu-2050.9.2/iokit/bsddev/IOKitBSDInit.cpp
@@ -1,16 +1,19 @@
 /*
- * Copyright (c) 1998-2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 1998-2011 Apple Inc. All rights reserved.
  *
- * @APPLE_LICENSE_HEADER_START@
- * 
- * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
  * 
  * This file contains Original Code and/or Modifications of Original Code
  * as defined in and that are subject to the Apple Public Source License
  * Version 2.0 (the 'License'). You may not use this file except in
- * compliance with the License. Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this
- * file.
+ * compliance with the License. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * unlawful or unlicensed copies of an Apple operating system, or to
+ * circumvent, violate, or enable the circumvention or violation of, any
+ * terms of an Apple operating system software license agreement.
+ * 
+ * Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this file.
  * 
  * The Original Code and all software distributed under the License are
  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
@@ -20,34 +23,103 @@
  * Please see the License for the specific language governing rights and
  * limitations under the License.
  * 
- * @APPLE_LICENSE_HEADER_END@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  */
 #include <IOKit/IOBSD.h>
 #include <IOKit/IOLib.h>
 #include <IOKit/IOService.h>
+#include <IOKit/IOCatalogue.h>
 #include <IOKit/IODeviceTreeSupport.h>
 #include <IOKit/IOKitKeys.h>
 #include <IOKit/IOPlatformExpert.h>
 
-#include <sys/disklabel.h>
-
 extern "C" {
 
 #include <pexpert/pexpert.h>
 #include <kern/clock.h>
+#include <uuid/uuid.h>
 
 // how long to wait for matching root device, secs
-#define ROOTDEVICETIMEOUT	60
-
+#if DEBUG
+#define ROOTDEVICETIMEOUT       120
+#else
+#define ROOTDEVICETIMEOUT       60
+#endif
+
+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 void di_root_ramfile(IORegistryEntry * entry);
 
 kern_return_t
 IOKitBSDInit( void )
 {
-    IOLog("IOKitBSDInit\n");
-
     IOService::publishResource("IOBSD");
- 
+
     return( kIOReturnSuccess );
+}
+
+void
+IOServicePublishResource( const char * property, boolean_t value )
+{
+    if ( value)
+        IOService::publishResource( property, kOSBooleanTrue );
+    else
+        IOService::getResourceService()->removeProperty( property );
+}
+
+boolean_t
+IOServiceWaitForMatchingResource( const char * property, uint64_t timeout )
+{
+    OSDictionary *	dict = 0;
+    IOService *         match = 0;
+    boolean_t		found = false;
+    
+    do {
+        
+        dict = IOService::resourceMatching( property );
+        if( !dict)
+            continue;
+        match = IOService::waitForMatchingService( dict, timeout );
+        if ( match)
+            found = true;
+        
+    } while( false );
+    
+    if( dict)
+        dict->release();
+    if( match)
+        match->release();
+    
+    return( found );
+}
+
+boolean_t
+IOCatalogueMatchingDriversPresent( const char * property )
+{
+    OSDictionary *	dict = 0;
+    OSOrderedSet *	set = 0;
+    SInt32		generationCount = 0;
+    boolean_t		found = false;
+    
+    do {
+        
+        dict = OSDictionary::withCapacity(1);
+        if( !dict)
+            continue;
+        dict->setObject( property, kOSBooleanTrue );
+        set = gIOCatalogue->findDrivers( dict, &generationCount );
+        if ( set && (set->getCount() > 0))
+            found = true;
+        
+    } while( false );
+    
+    if( dict)
+        dict->release();
+    if( set)
+        set->release();
+    
+    return( found );
 }
 
 OSDictionary * IOBSDNameMatching( const char * name )
@@ -78,81 +150,9 @@
     return( 0 );
 }
 
-OSDictionary * IOCDMatching( const char * name )
-{
-    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", (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;
-
-	strcpy( buf, kIODeviceTreePlane ":" );
-	comp = buf + len;
-
-        // remove parameters following ':' from the path
-        skip = strchr( path, ':');
-	if( !skip)
-	    continue;
-
-        len = skip - path;
-	maxLen -= len;
-	if( maxLen < 0)
-	    continue;
-        strncpy( comp, path, len );
-        comp[ len ] = 0;
-
-	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 * IOUUIDMatching( void )
+{
+    return IOService::resourceMatching( "boot-uuid-media" );
 }
 
 OSDictionary * IONetworkNamePrefixMatching( const char * prefix )
@@ -160,7 +160,8 @@
     OSDictionary *	 matching;
     OSDictionary *   propDict = 0;
     const OSSymbol * str      = 0;
-
+	char networkType[128];
+	
     do {
         matching = IOService::serviceMatching( "IONetworkInterface" );
         if ( matching == 0 )
@@ -177,6 +178,18 @@
         propDict->setObject( "IOInterfaceNamePrefix", (OSObject *) str );
         str->release();
         str = 0;
+
+		// see if we're contrained to netroot off of specific network type
+		if(PE_parse_boot_argn( "network-type", networkType, 128 ))
+		{
+			str = OSSymbol::withCString( networkType );
+			if(str)
+			{
+				propDict->setObject( "IONetworkRootType", str);
+				str->release();
+				str = 0;
+			}
+		}
 
         if ( matching->setObject( gIOPropertyMatchKey,
                                   (OSObject *) propDict ) != true )
@@ -249,85 +262,52 @@
 	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;
-    char         c;
-
-    // scan the tail of the path for "@unit:partition"
+OSDictionary * IOOFPathMatching( const char * path, char * buf, int maxLen )
+{
+    OSDictionary *	matching;
+    OSString *		str;
+    char *		comp;
+    int			len;
+
     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, 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;
-
-        maxLen -= strlen( "{" kIOPathMatchKey "='" kIODeviceTreePlane ":" );
-        maxLen -= ( alias ? strlen( alias ) : 0 ) + (look - path);
-        maxLen -= strlen( "/@hhhhhhhh:dddddddddd';}" );
-
-        if( maxLen > 0) {
-            sprintf( buf, "{" kIOPathMatchKey "='" kIODeviceTreePlane ":" );
-            comp = buf + strlen( buf );
-
-            if( alias) {
-                strcpy( comp, alias );
-                comp += strlen( alias );
-            }
-
-            if ( (look - path)) {
-                strncpy( comp, path, look - path);
-                comp += look - path;
-            }
-
-            sprintf( comp, "/@%lx:%ld';}", unit, partition );
-        } else
-            continue;
-
-        return( OSDynamicCast(OSDictionary, OSUnserialize( buf, 0 )) );
+
+	len = strlen( kIODeviceTreePlane ":" );
+	maxLen -= len;
+	if( maxLen <= 0)
+	    continue;
+
+	strlcpy( buf, kIODeviceTreePlane ":", len + 1 );
+	comp = buf + len;
+
+	len = strlen( path );
+	maxLen -= len;
+	if( maxLen <= 0)
+	    continue;
+	strlcpy( comp, path, len + 1 );
+
+	matching = OSDictionary::withCapacity( 1 );
+	if( !matching)
+	    continue;
+
+	str = OSString::withCString( buf );
+	if( !str)
+	    continue;
+        matching->setObject( kIOPathMatchKey, str );
+	str->release();
+
+	return( matching );
 
     } while( false );
 
+    if( matching)
+        matching->release();
+
     return( 0 );
 }
 
-OSDictionary * IOOFPathMatching( const char * path, char * buf, int maxLen )
-{
-    /* need to look up path, get device type,
-        call matching help based on device type */
-
-    return( IODiskMatching( path, buf, maxLen ));
-
-}
-
-kern_return_t IOFindBSDRoot( char * rootName,
+static int didRam = 0;
+
+kern_return_t IOFindBSDRoot( char * rootName, unsigned int rootNameSize,
 				dev_t * root, u_int32_t * oflags )
 {
     mach_timespec_t	t;
@@ -339,16 +319,20 @@
     OSData *		data = 0;
 
     UInt32		flags = 0;
-    int			minor, major;
+    int			mnr, mjr;
+    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;
+                                    
 
     if( mountAttempts++)
 	IOSleep( 5 * 1000 );
@@ -358,50 +342,93 @@
 	return( kIOReturnNoMemory );
     rdBootVar = str + kMaxPathBuf;
 
-    if (!PE_parse_boot_arg("rd", rdBootVar )
-     && !PE_parse_boot_arg("rootdev", rdBootVar ))
+    if (!PE_parse_boot_argn("rd", rdBootVar, kMaxBootVar )
+     && !PE_parse_boot_argn("rootdev", rdBootVar, kMaxBootVar ))
 	rdBootVar[0] = 0;
 
     do {
-        if( (regEntry = IORegistryEntry::fromPath( "/chosen", gIODTPlane ))) {
-	    data = (OSData *) regEntry->getProperty( "rootpath" );
+	if( (regEntry = IORegistryEntry::fromPath( "/chosen", gIODTPlane ))) {
+	    di_root_ramfile(regEntry);
+            data = OSDynamicCast(OSData, regEntry->getProperty( "root-matching" ));
+            if (data) {
+               matching = OSDynamicCast(OSDictionary, OSUnserializeXML((char *)data->getBytesNoCopy()));
+                if (matching) {
+                    continue;
+                }
+            }
+
+	    data = (OSData *) regEntry->getProperty( "boot-uuid" );
+	    if( data) {
+		uuidStr = (const char*)data->getBytesNoCopy();
+		OSString *uuidString = OSString::withCString( uuidStr );
+
+		// match the boot-args boot-uuid processing below
+		if( uuidString) {
+		    IOLog("rooting via boot-uuid from /chosen: %s\n", uuidStr);
+		    IOService::publishResource( "boot-uuid", uuidString );
+		    uuidString->release();
+		    matching = IOUUIDMatching();
+		    mediaProperty = "boot-uuid-media";
+		    regEntry->release();
+		    continue;
+		} else {
+		    uuidStr = NULL;
+		}
+	    }
 	    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)
-        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. 
+//
+
+	if(!didRam) {												/* Have we already build this ram disk? */
+		didRam = 1;												/* Remember we did this */
+		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 */
+				UInt32		*ramdParms = 0;
+				ramdParms = (UInt32 *)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 */
+		}
 	}
-    }
-
-    if( look) {
-	// from OpenFirmware path
-	IOLog("From path: \"%s\", ", look);
-
-	if( forceNet || (0 == strncmp( look, "enet", strlen( "enet" ))) ) {
-            matching = IONetworkMatching( look, str, kMaxPathBuf );
-        } else {
-            matching = IODiskMatching( look, str, kMaxPathBuf );
-        }
-    }
-
-    if( (!matching) && rdBootVar[0] ) {
+	
+//
+//	Now check if we are trying to root on a memory device
+//
+
+	if((rdBootVar[0] == 'm') && (rdBootVar[1] == 'd') && (rdBootVar[3] == 0)) {
+		dchar = xchar = rdBootVar[2];							/* Get the actual device */
+		if((xchar >= '0') && (xchar <= '9')) xchar = xchar - '0';	/* If digit, convert */
+		else {
+			xchar = xchar & ~' ';								/* Fold to upper case */
+			if((xchar >= 'A') && (xchar <= 'F')) {				/* Is this a valid digit? */
+				xchar = (xchar & 0xF) + 9;						/* Convert the hex digit */
+				dchar = dchar | ' ';							/* Fold to lower case */
+			}
+			else xchar = -1;									/* Show bogus */
+		}
+		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 */
+				goto iofrootx;									/* Join common exit... */
+			}
+			panic("IOFindBSDRoot: specified root memory device, %s, has not been configured\n", rdBootVar);	/* Not there */
+		}
+	}
+
+      if( (!matching) && rdBootVar[0] ) {
 	// by BSD name
 	look = rdBootVar;
 	if( look[0] == '*')
@@ -409,18 +436,37 @@
     
 	if ( strncmp( look, "en", strlen( "en" )) == 0 ) {
 	    matching = IONetworkNamePrefixMatching( "en" );
-	} else if ( strncmp( look, "cdrom", strlen( "cdrom" )) == 0 ) { 
-	    matching = IOCDMatching( look );
+	} else if ( strncmp( look, "uuid", strlen( "uuid" )) == 0 ) {
+            char *uuid;
+            OSString *uuidString;
+
+            uuid = (char *)IOMalloc( kMaxBootVar );
+                  
+            if ( uuid ) {
+                if (!PE_parse_boot_argn( "boot-uuid", uuid, kMaxBootVar )) {
+                    panic( "rd=uuid but no boot-uuid=<value> specified" ); 
+                } 
+                uuidString = OSString::withCString( uuid );
+                if ( uuidString ) {
+                    IOService::publishResource( "boot-uuid", uuidString );
+                    uuidString->release();
+                    IOLog( "\nWaiting for boot volume with UUID %s\n", uuid );
+                    matching = IOUUIDMatching();
+                    mediaProperty = "boot-uuid-media";
+                }
+                IOFree( uuid, kMaxBootVar );
+            }
 	} else {
 	    matching = IOBSDNameMatching( look );
 	}
     }
 
     if( !matching) {
-        OSString * astring;
-	// any UFS
+	OSString * astring;
+	// Match any HFS media
+	
         matching = IOService::serviceMatching( "IOMedia" );
-        astring = OSString::withCStringNoCopy("Apple_UFS");
+        astring = OSString::withCStringNoCopy("Apple_HFS");
         if ( astring ) {
             matching->setObject("Content", astring);
             astring->release();
@@ -462,8 +508,12 @@
     } while( !service);
     matching->release();
 
-    major = 0;
-    minor = 0;
+    if ( service && mediaProperty ) {
+        service = (IOService *)service->getProperty(mediaProperty);
+    }
+
+    mjr = 0;
+    mnr = 0;
 
     // If the IOService we matched to is a subclass of IONetworkInterface,
     // then make sure it has been registered with BSD and has a BSD name
@@ -484,13 +534,13 @@
 
 	iostr = (OSString *) service->getProperty( kIOBSDNameKey );
 	if( iostr)
-	    strcpy( rootName, iostr->getCStringNoCopy() );
+	    strlcpy( rootName, iostr->getCStringNoCopy(), rootNameSize );
 	off = (OSNumber *) service->getProperty( kIOBSDMajorKey );
 	if( off)
-	    major = off->unsigned32BitValue();
+	    mjr = off->unsigned32BitValue();
 	off = (OSNumber *) service->getProperty( kIOBSDMinorKey );
 	if( off)
-	    minor = off->unsigned32BitValue();
+	    mnr = off->unsigned32BitValue();
 
 	if( service->metaCast( "IONetworkInterface" ))
 	    flags |= 1;
@@ -498,21 +548,22 @@
     } else {
 
 	IOLog( "Wait for root failed\n" );
-        strcpy( rootName, "en0");
+        strlcpy( rootName, "en0", rootNameSize );
         flags |= 1;
     }
 
     IOLog( "BSD root: %s", rootName );
-    if( major)
-	IOLog(", major %d, minor %d\n", major, minor );
+    if( mjr)
+	IOLog(", major %d, minor %d\n", mjr, mnr );
     else
 	IOLog("\n");
 
-    *root = makedev( major, minor );
+    *root = makedev( mjr, mnr );
     *oflags = flags;
 
     IOFree( str,  kMaxPathBuf + kMaxBootVar );
 
+iofrootx:
     if( (gIOKitDebug & (kIOLogDTree | kIOLogServiceTree | kIOLogMemory)) && !debugInfoPrintedOnce) {
 
 	IOService::getPlatform()->waitQuiet();
@@ -531,6 +582,25 @@
     return( kIOReturnSuccess );
 }
 
+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 *
 IOBSDRegistryEntryForDeviceTree(char * path)
 {
@@ -562,4 +632,172 @@
     return (NULL);
 }
 
+kern_return_t IOBSDGetPlatformUUID( uuid_t uuid, mach_timespec_t timeout )
+{
+    IOService * resources;
+    OSString *  string;
+
+    resources = IOService::waitForService( IOService::resourceMatching( kIOPlatformUUIDKey ), ( timeout.tv_sec || timeout.tv_nsec ) ? &timeout : 0 );
+    if ( resources == 0 ) return KERN_OPERATION_TIMED_OUT;
+
+    string = ( OSString * ) IOService::getPlatform( )->getProvider( )->getProperty( kIOPlatformUUIDKey );
+    if ( string == 0 ) return KERN_NOT_SUPPORTED;
+
+    uuid_parse( string->getCStringNoCopy( ), uuid );
+
+    return KERN_SUCCESS;
+}
+
+kern_return_t IOBSDGetPlatformSerialNumber( char *serial_number_str, u_int32_t len )
+{
+    OSDictionary * platform_dict;
+    IOService *platform;
+    OSString *  string;
+
+    if (len < 1) {
+	    return 0;
+    }
+    serial_number_str[0] = '\0';
+
+    platform_dict = IOService::serviceMatching( "IOPlatformExpertDevice" );
+    if (platform_dict == NULL) {
+	    return KERN_NOT_SUPPORTED;
+    }
+
+    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 );
+	    }
+    }
+    
+    return KERN_SUCCESS;
+}
+
+dev_t IOBSDGetMediaWithUUID( const char *uuid_cstring, char *bsd_name, int bsd_name_len, int timeout)
+{
+    dev_t dev = 0;
+    OSDictionary *dictionary;
+    OSString *uuid_string;
+
+    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();
+    }
+
+    return dev;
+}
+
+
+void IOBSDIterateMediaWithContent(const char *content_uuid_cstring, int (*func)(const char *bsd_dev_name, const char *uuid_str, void *arg), void *arg)
+{
+    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();
+    }
+}
+
+
+int IOBSDIsMediaEjectable( const char *cdev_name )
+{
+    int ret = 0;
+    OSDictionary *dictionary;
+    OSString *dev_name;
+
+    if (strncmp(cdev_name, "/dev/", 5) == 0) {
+	    cdev_name += 5;
+    }
+
+    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();
+		}
+
+	    }
+	    dev_name->release();
+	}
+	dictionary->release();
+    }
+
+    return ret;
+}
+
 } /* extern "C" */