Source to 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/storage/IOMedia.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( kIOBSDName, (OSObject *) str );
        str->release();

        return( dict );

    } while( false );

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

    return( 0 );
}

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 * IODiskMatching( const char * path, char * buf, int maxLen )
{
    OSDictionary *	matching = 0;
    const char *	look;
    const char *	skip;
    const char *	alias;
    char *		comp;
    UInt32		unit = 0x99;
    UInt32		partition = 0xaa;
    int			len;
    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"
        skip = path;
        alias = IORegistryEntry::dealiasPath( &skip, gIODTPlane );

        look = skip + strlen( skip);
        c = ':';
        while( c && (look != skip)) {
            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;
            }

	    if( alias && (look == skip)) {
		skip = alias;
		look = skip + strlen( skip);
		alias = 0;
	    }
        }
	if( c)
	    continue;

#define diskMatch1			\
"{"					\
    kIOProviderClassKey"=IOMedia;"	\
    "'IOPath Separator'=':';"		\
    "'IOPath Extension'='%ld';"		\
    kIOLocationMatchKey"={"		\
        "IOUnit=%ld:32;"		\
        kIOLocationMatchKey"={"		\
            kIOPathMatchKey"='"