[apple/xnu.git] / iokit / bsddev / IOKitBSDInit.cpp

/*
 * Copyright (c) 1998-2000 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 * 
 * The contents of this file constitute Original Code as defined in and
 * are subject to the Apple Public Source License Version 1.1 (the
 * "License").  You may not use this file except in compliance with the
 * License.  Please obtain a copy of the License at
 * http://www.apple.com/publicsource and read it before using this file.
 * 
 * This Original Code and all software distributed under the License are
 * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
 * License for the specific language governing rights and limitations
 * under the License.
 * 
 * @APPLE_LICENSE_HEADER_END@
 */
#include <IOKit/IOBSD.h>
#include <IOKit/IOLib.h>
#include <IOKit/IOService.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>

// how long to wait for matching root device, secs
#define ROOTDEVICETIMEOUT	60


kern_return_t
IOKitBSDInit( void )
{
    IOLog("IOKitBSDInit\n");

    IOService::publishResource("IOBSD");
 
    return( kIOReturnSuccess );
}

OSDictionary * IOBSDNameMatching( const char * name )
{
    OSDictionary *	dict;
    const OSSymbol *	str = 0;

    do {

	dict = IOService::serviceMatching( gIOServiceKey );
	if( !dict)
	    continue;
        str = OSSymbol::withCString( name );
	if( !str)
	    continue;
        dict->setObject( kIOBSDNameKey, (OSObject *) str );
        str->release();

        return( dict );

    } while( false );

    if( dict)
	dict->release();
    if( str)
	str->release();

    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 * IONetworkNamePrefixMatching( const char * prefix )
{
    OSDictionary *	 matching;
    OSDictionary *   propDict = 0;
    const OSSymbol * str      = 0;

    do {
        matching = IOService::serviceMatching( "IONetworkInterface" );
        if ( matching == 0 )
            continue;

        propDict = OSDictionary::withCapacity(1);
        if ( propDict == 0 )
            continue;

        str = OSSymbol::withCString( prefix );
        if ( str == 0 )
            continue;

        propDict->setObject( "IOInterfaceNamePrefix", (OSObject *) str );
        str->release();
        str = 0;

        if ( matching->setObject( gIOPropertyMatchKey,
                                  (OSObject *) propDict ) != true )
            continue;

        propDict->release();
        propDict = 0;

        return( matching );

    } while ( false );

    if ( matching ) matching->release();
    if ( propDict ) propDict->release();
    if ( str      ) str->release();

    return( 0 );
}

static bool IORegisterNetworkInterface( IOService * netif )
{
    // A network interface is typically named and registered
    // with BSD after receiving a request from a user space
    // "namer". However, for cases when the system needs to
    // root from the network, this registration task must be
    // done inside the kernel and completed before the root
    // device is handed to BSD.

    IOService *    stack;
    OSNumber *     zero    = 0;
    OSString *     path    = 0;
    OSDictionary * dict    = 0;
    char *         pathBuf = 0;
    int            len;
    enum { kMaxPathLen = 512 };

    do {
        stack = IOService::waitForService(
                IOService::serviceMatching("IONetworkStack") );
        if ( stack == 0 ) break;

        dict = OSDictionary::withCapacity(3);
        if ( dict == 0 ) break;

        zero = OSNumber::withNumber((UInt64) 0, 32);
        if ( zero == 0 ) break;

        pathBuf = (char *) IOMalloc( kMaxPathLen );
        if ( pathBuf == 0 ) break;

        len = kMaxPathLen;
        if ( netif->getPath( pathBuf, &len, gIOServicePlane )
             == false ) break;

        path = OSString::withCStringNoCopy( pathBuf );
        if ( path == 0 ) break;

        dict->setObject( "IOInterfaceUnit", zero );
        dict->setObject( kIOPathMatchKey,   path );

        stack->setProperties( dict );
    }
    while ( false );

    if ( zero ) zero->release();
    if ( path ) path->release();
    if ( dict ) dict->release();
    if ( pathBuf ) IOFree(pathBuf, kMaxPathLen);

	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"
    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 )) );

    } while( false );

    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,
				dev_t * root, u_int32_t * oflags )
{
    mach_timespec_t	t;
    IOService *		service;
    IORegistryEntry *	regEntry;
    OSDictionary *	matching = 0;
    OSString *		iostr;
    OSNumber *		off;
    OSData *		data = 0;

    UInt32		flags = 0;
    int			minor, major;
    char *		rdBootVar;
    enum {		kMaxPathBuf = 512, kMaxBootVar = 128 };
    char *		str;
    const char *	look = 0;
    int			len;
    bool		forceNet = false;
    bool		debugInfoPrintedOnce = false;

    static int		mountAttempts = 0;

    if( mountAttempts++)
	IOSleep( 5 * 1000 );

    str = (char *) IOMalloc( kMaxPathBuf + kMaxBootVar );
    if( !str)
	return( kIOReturnNoMemory );
    rdBootVar = str + kMaxPathBuf;

    if (!PE_parse_boot_arg("rd", rdBootVar )
     && !PE_parse_boot_arg("rootdev", rdBootVar ))
	rdBootVar[0] = 0;

    do {
        if( (regEntry = IORegistryEntry::fromPath( "/chosen", gIODTPlane ))) {
	    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)
        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();
	}
    }

    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] ) {
	// by BSD name
	look = rdBootVar;
	if( look[0] == '*')
	    look++;
    
	if ( strncmp( look, "en", strlen( "en" )) == 0 ) {
	    matching = IONetworkNamePrefixMatching( "en" );
	} else if ( strncmp( look, "cdrom", strlen( "cdrom" )) == 0 ) { 
	    matching = IOCDMatching( look );
	} else {
	    matching = IOBSDNameMatching( look );
	}
    }

    if( !matching) {
        OSString * astring;
	// any UFS
        matching = IOService::serviceMatching( "IOMedia" );
        astring = OSString::withCStringNoCopy("Apple_UFS");
        if ( astring ) {
            matching->setObject("Content", astring);
            astring->release();
        }
    }

    if( true && matching) {
        OSSerialize * s = OSSerialize::withCapacity( 5 );

        if( matching->serialize( s )) {
            IOLog( "Waiting on %s\n", s->text() );
            s->release();
        }
    }

    do {
        t.tv_sec = ROOTDEVICETIMEOUT;
        t.tv_nsec = 0;
	matching->retain();
        service = IOService::waitForService( matching, &t );
	if( (!service) || (mountAttempts == 10)) {
            PE_display_icon( 0, "noroot");
            IOLog( "Still waiting for root device\n" );

            if( !debugInfoPrintedOnce) {
                debugInfoPrintedOnce = true;
                if( gIOKitDebug & kIOLogDTree) {
                    IOLog("\nDT plane:\n");
                    IOPrintPlane( gIODTPlane );
                }
                if( gIOKitDebug & kIOLogServiceTree) {
                    IOLog("\nService plane:\n");
                    IOPrintPlane( gIOServicePlane );
                }
                if( gIOKitDebug & kIOLogMemory)
                    IOPrintMemory();
            }
	}
    } while( !service);
    matching->release();

    major = 0;
    minor = 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
    // assigned.

    if ( service
    &&   service->metaCast( "IONetworkInterface" )
    &&   !IORegisterNetworkInterface( service ) )
    {
        service = 0;
    }

    if( service) {

	len = kMaxPathBuf;
	service->getPath( str, &len, gIOServicePlane );
	IOLog( "Got boot device = %s\n", str );

	iostr = (OSString *) service->getProperty( kIOBSDNameKey );
	if( iostr)
	    strcpy( rootName, iostr->getCStringNoCopy() );
	off = (OSNumber *) service->getProperty( kIOBSDMajorKey );
	if( off)
	    major = off->unsigned32BitValue();
	off = (OSNumber *) service->getProperty( kIOBSDMinorKey );
	if( off)
	    minor = off->unsigned32BitValue();

	if( service->metaCast( "IONetworkInterface" ))
	    flags |= 1;

    } else {

	IOLog( "Wait for root failed\n" );
        strcpy( rootName, "en0");
        flags |= 1;
    }

    IOLog( "BSD root: %s", rootName );
    if( major)
	IOLog(", major %d, minor %d\n", major, minor );
    else
	IOLog("\n");

    *root = makedev( major, minor );
    *oflags = flags;

    IOFree( str,  kMaxPathBuf + kMaxBootVar );

    if( (gIOKitDebug & (kIOLogDTree | kIOLogServiceTree | kIOLogMemory)) && !debugInfoPrintedOnce) {

	IOService::getPlatform()->waitQuiet();
        if( gIOKitDebug & kIOLogDTree) {
            IOLog("\nDT plane:\n");
            IOPrintPlane( gIODTPlane );
        }
        if( gIOKitDebug & kIOLogServiceTree) {
            IOLog("\nService plane:\n");
            IOPrintPlane( gIOServicePlane );
        }
        if( gIOKitDebug & kIOLogMemory)
            IOPrintMemory();
    }

    return( kIOReturnSuccess );
}

void *
IOBSDRegistryEntryForDeviceTree(char * path)
{
    return (IORegistryEntry::fromPath(path, gIODTPlane));
}

void
IOBSDRegistryEntryRelease(void * entry)
{
    IORegistryEntry * regEntry = (IORegistryEntry *)entry;

    if (regEntry)
	regEntry->release();
    return;
}

const void *
IOBSDRegistryEntryGetData(void * entry, char * property_name, 
			  int * packet_length)
{
    OSData *		data;
    IORegistryEntry * 	regEntry = (IORegistryEntry *)entry;

    data = (OSData *) regEntry->getProperty(property_name);
    if (data) {
	*packet_length = data->getLength();
        return (data->getBytesNoCopy());
    }
    return (NULL);
}

} /* extern "C" */
Commit	Line	Data
1c79356b A	1	/*
	2	* Copyright (c) 1998-2000 Apple Computer, Inc. All rights reserved.
	3	*
	4	* @APPLE_LICENSE_HEADER_START@
	5	*
	6	* The contents of this file constitute Original Code as defined in and
	7	* are subject to the Apple Public Source License Version 1.1 (the
	8	* "License"). You may not use this file except in compliance with the
	9	* License. Please obtain a copy of the License at
	10	* http://www.apple.com/publicsource and read it before using this file.
	11	*
	12	* This Original Code and all software distributed under the License are
	13	* distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
	14	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
	15	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
	16	* FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
	17	* License for the specific language governing rights and limitations
	18	* under the License.
	19	*
	20	* @APPLE_LICENSE_HEADER_END@
	21	*/
	22	#include <IOKit/IOBSD.h>
	23	#include <IOKit/IOLib.h>
	24	#include <IOKit/IOService.h>
	25	#include <IOKit/IODeviceTreeSupport.h>
	26	#include <IOKit/IOKitKeys.h>
1c79356b A	27	#include <IOKit/IOPlatformExpert.h>
	28
	29	#include <sys/disklabel.h>
	30
	31	extern "C" {
	32
	33	#include <pexpert/pexpert.h>
	34	#include <kern/clock.h>
	35
	36	// how long to wait for matching root device, secs
	37	#define ROOTDEVICETIMEOUT 60
	38
	39
	40	kern_return_t
	41	IOKitBSDInit( void )
	42	{
	43	IOLog("IOKitBSDInit\n");
	44
	45	IOService::publishResource("IOBSD");
	46
	47	return( kIOReturnSuccess );
	48	}
	49
	50	OSDictionary * IOBSDNameMatching( const char * name )
	51	{
	52	OSDictionary * dict;
	53	const OSSymbol * str = 0;
	54
	55	do {
	56
	57	dict = IOService::serviceMatching( gIOServiceKey );
	58	if( !dict)
	59	continue;
	60	str = OSSymbol::withCString( name );
	61	if( !str)
	62	continue;
	63	dict->setObject( kIOBSDNameKey, (OSObject *) str );
	64	str->release();
	65
	66	return( dict );
	67
	68	} while( false );
	69
	70	if( dict)
	71	dict->release();
	72	if( str)
	73	str->release();
	74
	75	return( 0 );
	76	}
	77
0b4e3aa0 A	78	OSDictionary * IOCDMatching( const char * name )
	79	{
	80	OSDictionary * dict;
	81	const OSSymbol * str;
	82
	83	dict = IOService::serviceMatching( "IOMedia" );
	84	if( dict == 0 ) {
	85	IOLog("Unable to find IOMedia\n");
	86	return 0;
	87	}
	88
	89	str = OSSymbol::withCString( "CD_ROM_Mode_1" );
	90	if( str == 0 ) {
	91	dict->release();
	92	return 0;
	93	}
	94
	95	dict->setObject( "Content", (OSObject *)str );
	96	str->release();
	97	return( dict );
	98	}
	99
1c79356b A	100	OSDictionary * IONetworkMatching( const char * path,
	101	char * buf, int maxLen )
	102	{
	103	OSDictionary * matching = 0;
	104	OSDictionary * dict;
	105	OSString * str;
	106	char * comp;
	107	const char * skip;
	108	int len;
	109
	110	do {
	111
	112	len = strlen( kIODeviceTreePlane ":" );
	113	maxLen -= len;
	114	if( maxLen < 0)
	115	continue;
	116
	117	strcpy( buf, kIODeviceTreePlane ":" );
	118	comp = buf + len;
	119
	120	// remove parameters following ':' from the path
	121	skip = strchr( path, ':');
	122	if( !skip)
	123	continue;
	124
	125	len = skip - path;
	126	maxLen -= len;
	127	if( maxLen < 0)
	128	continue;
	129	strncpy( comp, path, len );
	130	comp[ len ] = 0;
	131
	132	matching = IOService::serviceMatching( "IONetworkInterface" );
	133	if( !matching)
	134	continue;
	135	dict = IOService::addLocation( matching );
	136	if( !dict)
	137	continue;
	138
	139	str = OSString::withCString( buf );
	140	if( !str)
	141	continue;
	142	dict->setObject( kIOPathMatchKey, str );
	143	str->release();
	144
	145	return( matching );
	146
	147	} while( false );
	148
	149	if( matching)
	150	matching->release();
	151
	152	return( 0 );
	153	}
	154
	155	OSDictionary * IONetworkNamePrefixMatching( const char * prefix )
	156	{
	157	OSDictionary * matching;
	158	OSDictionary * propDict = 0;
	159	const OSSymbol * str = 0;
	160
	161	do {
	162	matching = IOService::serviceMatching( "IONetworkInterface" );
	163	if ( matching == 0 )
164	continue;
165
166	propDict = OSDictionary::withCapacity(1);
167	if ( propDict == 0 )
168	continue;
169
170	str = OSSymbol::withCString( prefix );
171	if ( str == 0 )
172	continue;
173
0b4e3aa0	174	propDict->setObject( "IOInterfaceNamePrefix", (OSObject *) str );
1c79356b A	175	str->release();
	176	str = 0;
	177
	178	if ( matching->setObject( gIOPropertyMatchKey,
	179	(OSObject *) propDict ) != true )
	180	continue;
	181
	182	propDict->release();
	183	propDict = 0;
	184
	185	return( matching );
	186
	187	} while ( false );
	188
	189	if ( matching ) matching->release();
	190	if ( propDict ) propDict->release();
	191	if ( str ) str->release();
	192
	193	return( 0 );
	194	}
	195
0b4e3aa0	196	static bool IORegisterNetworkInterface( IOService * netif )
1c79356b	197	{
0b4e3aa0 A	198	// A network interface is typically named and registered
	199	// with BSD after receiving a request from a user space
	200	// "namer". However, for cases when the system needs to
	201	// root from the network, this registration task must be
	202	// done inside the kernel and completed before the root
	203	// device is handed to BSD.
	204
	205	IOService * stack;
	206	OSNumber * zero = 0;
	207	OSString * path = 0;
	208	OSDictionary * dict = 0;
	209	char * pathBuf = 0;
	210	int len;
	211	enum { kMaxPathLen = 512 };
1c79356b	212
0b4e3aa0 A	213	do {
	214	stack = IOService::waitForService(
	215	IOService::serviceMatching("IONetworkStack") );
	216	if ( stack == 0 ) break;
1c79356b	217
0b4e3aa0 A	218	dict = OSDictionary::withCapacity(3);
0b4e3aa0 A	219	if ( dict == 0 ) break;
1c79356b	220
0b4e3aa0 A	221	zero = OSNumber::withNumber((UInt64) 0, 32);
0b4e3aa0 A	222	if ( zero == 0 ) break;
1c79356b	223
0b4e3aa0 A	224	pathBuf = (char *) IOMalloc( kMaxPathLen );
	225	if ( pathBuf == 0 ) break;
	226
	227	len = kMaxPathLen;
	228	if ( netif->getPath( pathBuf, &len, gIOServicePlane )
	229	== false ) break;
	230
	231	path = OSString::withCStringNoCopy( pathBuf );
	232	if ( path == 0 ) break;
	233
	234	dict->setObject( "IOInterfaceUnit", zero );
	235	dict->setObject( kIOPathMatchKey, path );
	236
	237	stack->setProperties( dict );
	238	}
	239	while ( false );
	240
	241	if ( zero ) zero->release();
	242	if ( path ) path->release();
	243	if ( dict ) dict->release();
	244	if ( pathBuf ) IOFree(pathBuf, kMaxPathLen);
	245
	246	return ( netif->getProperty( kIOBSDNameKey ) != 0 );
1c79356b A	247	}
	248
	249	OSDictionary * IODiskMatching( const char * path, char * buf, int maxLen )
	250	{
	251	const char * look;
	252	const char * alias;
	253	char * comp;
	254	long unit = -1;
	255	long partition = -1;
	256	char c;
	257
	258	// scan the tail of the path for "@unit:partition"
	259	do {
	260	// Have to get the full path to the controller - an alias may
	261	// tell us next to nothing, like "hd:8"
	262	alias = IORegistryEntry::dealiasPath( &path, gIODTPlane );
	263
	264	look = path + strlen( path);
	265	c = ':';
	266	while( look != path) {
	267	if( *(--look) == c) {
	268	if( c == ':') {
	269	partition = strtol( look + 1, 0, 0 );
	270	c = '@';
	271	} else if( c == '@') {
	272	unit = strtol( look + 1, 0, 16 );
	273	c = '/';
	274	} else if( c == '/') {
	275	c = 0;
	276	break;
	277	}
	278	}
	279
	280	if( alias && (look == path)) {
	281	path = alias;
	282	look = path + strlen( path);
	283	alias = 0;
	284	}
	285	}
	286	if( c \|\| unit == -1 \|\| partition == -1)
	287	continue;
	288
	289	maxLen -= strlen( "{" kIOPathMatchKey "='" kIODeviceTreePlane ":" );
	290	maxLen -= ( alias ? strlen( alias ) : 0 ) + (look - path);
	291	maxLen -= strlen( "/@hhhhhhhh:dddddddddd';}" );
	292
	293	if( maxLen > 0) {
	294	sprintf( buf, "{" kIOPathMatchKey "='" kIODeviceTreePlane ":" );
	295	comp = buf + strlen( buf );
	296
	297	if( alias) {
	298	strcpy( comp, alias );
	299	comp += strlen( alias );
	300	}
	301
	302	if ( (look - path)) {
	303	strncpy( comp, path, look - path);
	304	comp += look - path;
	305	}
	306
	307	sprintf( comp, "/@%lx:%ld';}", unit, partition );
	308	} else
	309	continue;
	310
311	return( OSDynamicCast(OSDictionary, OSUnserialize( buf, 0 )) );
312
313	} while( false );
314
315	return( 0 );
316	}
317
318	OSDictionary * IOOFPathMatching( const char * path, char * buf, int maxLen )
319	{
320	/* need to look up path, get device type,
321	call matching help based on device type */
322
323	return( IODiskMatching( path, buf, maxLen ));
324
325	}
326
327	kern_return_t IOFindBSDRoot( char * rootName,
328	dev_t * root, u_int32_t * oflags )
329	{
330	mach_timespec_t t;
331	IOService * service;
332	IORegistryEntry * regEntry;
333	OSDictionary * matching = 0;
334	OSString * iostr;
335	OSNumber * off;
336	OSData * data = 0;
337
338	UInt32 flags = 0;
339	int minor, major;
340	char * rdBootVar;
341	enum { kMaxPathBuf = 512, kMaxBootVar = 128 };
342	char * str;
343	const char * look = 0;
344	int len;
345	bool forceNet = false;
0b4e3aa0	346	bool debugInfoPrintedOnce = false;
1c79356b A	347
	348	static int mountAttempts = 0;
	349
	350	if( mountAttempts++)
	351	IOSleep( 5 * 1000 );
	352
	353	str = (char *) IOMalloc( kMaxPathBuf + kMaxBootVar );
	354	if( !str)
	355	return( kIOReturnNoMemory );
	356	rdBootVar = str + kMaxPathBuf;
	357
	358	if (!PE_parse_boot_arg("rd", rdBootVar )
	359	&& !PE_parse_boot_arg("rootdev", rdBootVar ))
	360	rdBootVar[0] = 0;
	361
	362	do {
	363	if( (regEntry = IORegistryEntry::fromPath( "/chosen", gIODTPlane ))) {
	364	data = (OSData *) regEntry->getProperty( "rootpath" );
	365	regEntry->release();
	366	if( data)
	367	continue;
	368	}
	369	if( (regEntry = IORegistryEntry::fromPath( "/options", gIODTPlane ))) {
	370	data = (OSData *) regEntry->getProperty( "boot-file" );
	371	regEntry->release();
	372	if( data)
	373	continue;
	374	}
	375	} while( false );
	376
	377	if( data)
	378	look = (const char *) data->getBytesNoCopy();
	379
	380	if( rdBootVar[0] == '*') {
	381	look = rdBootVar + 1;
	382	forceNet = false;
	383	} else {
	384	if( (regEntry = IORegistryEntry::fromPath( "/", gIODTPlane ))) {
	385	forceNet = (0 != regEntry->getProperty( "net-boot" ));
	386	regEntry->release();
	387	}
	388	}
	389
	390	if( look) {
	391	// from OpenFirmware path
	392	IOLog("From path: \"%s\", ", look);
	393
0b4e3aa0 A	394	if( forceNet \|\| (0 == strncmp( look, "enet", strlen( "enet" ))) ) {
	395	matching = IONetworkMatching( look, str, kMaxPathBuf );
	396	} else {
1c79356b	397	matching = IODiskMatching( look, str, kMaxPathBuf );
0b4e3aa0	398	}
1c79356b A	399	}
	400
	401	if( (!matching) && rdBootVar[0] ) {
	402	// by BSD name
	403	look = rdBootVar;
	404	if( look[0] == '*')
	405	look++;
	406
0b4e3aa0 A	407	if ( strncmp( look, "en", strlen( "en" )) == 0 ) {
	408	matching = IONetworkNamePrefixMatching( "en" );
	409	} else if ( strncmp( look, "cdrom", strlen( "cdrom" )) == 0 ) {
	410	matching = IOCDMatching( look );
	411	} else {
	412	matching = IOBSDNameMatching( look );
	413	}
1c79356b A	414	}
	415
	416	if( !matching) {
	417	OSString * astring;
	418	// any UFS
	419	matching = IOService::serviceMatching( "IOMedia" );
	420	astring = OSString::withCStringNoCopy("Apple_UFS");
	421	if ( astring ) {
0b4e3aa0	422	matching->setObject("Content", astring);
1c79356b A	423	astring->release();
	424	}
	425	}
	426
	427	if( true && matching) {
	428	OSSerialize * s = OSSerialize::withCapacity( 5 );
	429
	430	if( matching->serialize( s )) {
	431	IOLog( "Waiting on %s\n", s->text() );
	432	s->release();
	433	}
	434	}
	435
1c79356b A	436	do {
	437	t.tv_sec = ROOTDEVICETIMEOUT;
	438	t.tv_nsec = 0;
	439	matching->retain();
	440	service = IOService::waitForService( matching, &t );
	441	if( (!service) \|\| (mountAttempts == 10)) {
	442	PE_display_icon( 0, "noroot");
	443	IOLog( "Still waiting for root device\n" );
0b4e3aa0 A	444
	445	if( !debugInfoPrintedOnce) {
	446	debugInfoPrintedOnce = true;
	447	if( gIOKitDebug & kIOLogDTree) {
	448	IOLog("\nDT plane:\n");
	449	IOPrintPlane( gIODTPlane );
	450	}
	451	if( gIOKitDebug & kIOLogServiceTree) {
	452	IOLog("\nService plane:\n");
	453	IOPrintPlane( gIOServicePlane );
	454	}
	455	if( gIOKitDebug & kIOLogMemory)
	456	IOPrintMemory();
	457	}
1c79356b A	458	}
	459	} while( !service);
	460	matching->release();
	461
	462	major = 0;
	463	minor = 0;
	464
	465	// If the IOService we matched to is a subclass of IONetworkInterface,
	466	// then make sure it has been registered with BSD and has a BSD name
	467	// assigned.
	468
	469	if ( service
	470	&& service->metaCast( "IONetworkInterface" )
0b4e3aa0	471	&& !IORegisterNetworkInterface( service ) )
1c79356b A	472	{
	473	service = 0;
	474	}
1c79356b A	475
	476	if( service) {
	477
	478	len = kMaxPathBuf;
	479	service->getPath( str, &len, gIOServicePlane );
	480	IOLog( "Got boot device = %s\n", str );
	481
	482	iostr = (OSString *) service->getProperty( kIOBSDNameKey );
	483	if( iostr)
	484	strcpy( rootName, iostr->getCStringNoCopy() );
	485	off = (OSNumber *) service->getProperty( kIOBSDMajorKey );
	486	if( off)
	487	major = off->unsigned32BitValue();
	488	off = (OSNumber *) service->getProperty( kIOBSDMinorKey );
	489	if( off)
	490	minor = off->unsigned32BitValue();
	491
	492	if( service->metaCast( "IONetworkInterface" ))
	493	flags \|= 1;
	494
	495	} else {
	496
	497	IOLog( "Wait for root failed\n" );
	498	strcpy( rootName, "en0");
	499	flags \|= 1;
	500	}
	501
	502	IOLog( "BSD root: %s", rootName );
	503	if( major)
	504	IOLog(", major %d, minor %d\n", major, minor );
	505	else
	506	IOLog("\n");
	507
	508	*root = makedev( major, minor );
	509	*oflags = flags;
	510
	511	IOFree( str, kMaxPathBuf + kMaxBootVar );
	512
0b4e3aa0	513	if( (gIOKitDebug & (kIOLogDTree \| kIOLogServiceTree \| kIOLogMemory)) && !debugInfoPrintedOnce) {
1c79356b	514
0b4e3aa0	515	IOService::getPlatform()->waitQuiet();
1c79356b A	516	if( gIOKitDebug & kIOLogDTree) {
	517	IOLog("\nDT plane:\n");
	518	IOPrintPlane( gIODTPlane );
	519	}
	520	if( gIOKitDebug & kIOLogServiceTree) {
	521	IOLog("\nService plane:\n");
	522	IOPrintPlane( gIOServicePlane );
	523	}
	524	if( gIOKitDebug & kIOLogMemory)
	525	IOPrintMemory();
	526	}
	527
	528	return( kIOReturnSuccess );
	529	}
	530
9bccf70c A	531	void *
	532	IOBSDRegistryEntryForDeviceTree(char * path)
	533	{
	534	return (IORegistryEntry::fromPath(path, gIODTPlane));
	535	}
	536
	537	void
	538	IOBSDRegistryEntryRelease(void * entry)
	539	{
	540	IORegistryEntry * regEntry = (IORegistryEntry *)entry;
	541
	542	if (regEntry)
	543	regEntry->release();
	544	return;
	545	}
	546
	547	const void *
	548	IOBSDRegistryEntryGetData(void * entry, char * property_name,
	549	int * packet_length)
	550	{
	551	OSData * data;
	552	IORegistryEntry * regEntry = (IORegistryEntry *)entry;
	553
	554	data = (OSData *) regEntry->getProperty(property_name);
	555	if (data) {
	556	*packet_length = data->getLength();
	557	return (data->getBytesNoCopy());
	558	}
	559	return (NULL);
	560	}
	561
1c79356b	562	} /* extern "C" */