extern "C" {
#include <machine/machine_routines.h>
#include <libkern/kernel_mach_header.h>
#include <kern/host.h>
#include <security/mac_data.h>
};
#include <libkern/c++/OSContainers.h>
#include <libkern/c++/OSUnserialize.h>
#include <libkern/c++/OSKext.h>
#include <libkern/OSKextLibPrivate.h>
#include <IOKit/IODeviceTreeSupport.h>
#include <IOKit/IOService.h>
#include <IOKit/IOCatalogue.h>
#include <IOKit/IOLib.h>
#include <IOKit/assert.h>
#if PRAGMA_MARK
#pragma mark Internal Declarations
#endif
#define CATALOGTEST 0
IOCatalogue * gIOCatalogue;
const OSSymbol * gIOClassKey;
const OSSymbol * gIOProbeScoreKey;
const OSSymbol * gIOModuleIdentifierKey;
IOLock * gIOCatalogLock;
#if PRAGMA_MARK
#pragma mark Utility functions
#endif
static void
UniqueProperties(OSDictionary * dict)
{
OSString * data;
data = OSDynamicCast(OSString, dict->getObject(gIOClassKey));
if (data) {
const OSSymbol *classSymbol = OSSymbol::withString(data);
dict->setObject( gIOClassKey, (OSSymbol *) classSymbol);
classSymbol->release();
}
data = OSDynamicCast(OSString, dict->getObject(gIOMatchCategoryKey));
if (data) {
const OSSymbol *classSymbol = OSSymbol::withString(data);
dict->setObject(gIOMatchCategoryKey, (OSSymbol *) classSymbol);
classSymbol->release();
}
return;
}
static void
AddNewImports(OSOrderedSet * set, OSDictionary * dict)
{
set->setObject(dict);
}
#if PRAGMA_MARK
#pragma mark IOCatalogue class implementation
#endif
#define super OSObject
OSDefineMetaClassAndStructors(IOCatalogue, OSObject)
void IOCatalogue::initialize(void)
{
OSArray * array;
OSString * errorString;
bool rc;
extern const char * gIOKernelConfigTables;
array = OSDynamicCast(OSArray, OSUnserialize(gIOKernelConfigTables, &errorString));
if (!array && errorString) {
IOLog("KernelConfigTables syntax error: %s\n",
errorString->getCStringNoCopy());
errorString->release();
}
gIOClassKey = OSSymbol::withCStringNoCopy( kIOClassKey );
gIOProbeScoreKey = OSSymbol::withCStringNoCopy( kIOProbeScoreKey );
gIOModuleIdentifierKey = OSSymbol::withCStringNoCopy( kCFBundleIdentifierKey );
assert( array && gIOClassKey && gIOProbeScoreKey
&& gIOModuleIdentifierKey);
gIOCatalogue = new IOCatalogue;
assert(gIOCatalogue);
rc = gIOCatalogue->init(array);
assert(rc);
array->release();
}
bool IOCatalogue::init(OSArray * initArray)
{
OSDictionary * dict;
if ( !super::init() )
return false;
generation = 1;
array = initArray;
array->retain();
kernelTables = OSCollectionIterator::withCollection( array );
gIOCatalogLock = IOLockAlloc();
lock = gIOCatalogLock;
#if __ppc__ || __i386__
kld_lock = NULL;
#endif
kernelTables->reset();
while( (dict = (OSDictionary *) kernelTables->getNextObject())) {
UniqueProperties(dict);
if( 0 == dict->getObject( gIOClassKey ))
IOLog("Missing or bad \"%s\" key\n",
gIOClassKey->getCStringNoCopy());
}
#if CATALOGTEST
AbsoluteTime deadline;
clock_interval_to_deadline( 1000, kMillisecondScale );
thread_call_func_delayed( ping, this, deadline );
#endif
return true;
}
void IOCatalogue::free( void )
{
if ( array )
array->release();
if ( kernelTables )
kernelTables->release();
super::free();
}
#if CATALOGTEST
static int hackLimit;
enum { kDriversPerIter = 4 };
void
IOCatalogue::ping(thread_call_param_t arg, thread_call_param_t)
{
IOCatalogue * self = (IOCatalogue *) arg;
OSOrderedSet * set;
OSDictionary * table;
int newLimit;
set = OSOrderedSet::withCapacity( 1 );
IOLockLock( &self->lock );
for( newLimit = 0; newLimit < kDriversPerIter; newLimit++) {
table = (OSDictionary *) self->array->getObject(
hackLimit + newLimit );
if( table) {
set->setLastObject( table );
OSSymbol * sym = (OSSymbol *) table->getObject(gIOClassKey);
kprintf("enabling %s\n", sym->getCStringNoCopy());
} else {
newLimit--;
break;
}
}
IOService::catalogNewDrivers( set );
hackLimit += newLimit;
self->generation++;
IOLockUnlock( &self->lock );
if( kDriversPerIter == newLimit) {
AbsoluteTime deadline;
clock_interval_to_deadline(500, kMillisecondScale);
thread_call_func_delayed(ping, this, deadline);
}
}
#endif
OSOrderedSet *
IOCatalogue::findDrivers(
IOService * service,
SInt32 * generationCount)
{
OSDictionary * nextTable;
OSOrderedSet * set;
OSString * imports;
set = OSOrderedSet::withCapacity( 1, IOServiceOrdering,
(void *)gIOProbeScoreKey );
if( !set )
return( 0 );
IOLockLock(lock);
kernelTables->reset();
#if CATALOGTEST
int hackIndex = 0;
#endif
while( (nextTable = (OSDictionary *) kernelTables->getNextObject())) {
#if CATALOGTEST
if( hackIndex++ > hackLimit)
break;
#endif
imports = OSDynamicCast( OSString,
nextTable->getObject( gIOProviderClassKey ));
if( imports && service->metaCast( imports ))
set->setObject( nextTable );
}
*generationCount = getGenerationCount();
IOLockUnlock(lock);
return( set );
}
OSOrderedSet *
IOCatalogue::findDrivers(
OSDictionary * matching,
SInt32 * generationCount)
{
OSDictionary * dict;
OSOrderedSet * set;
UniqueProperties(matching);
set = OSOrderedSet::withCapacity( 1, IOServiceOrdering,
(void *)gIOProbeScoreKey );
IOLockLock(lock);
kernelTables->reset();
while ( (dict = (OSDictionary *) kernelTables->getNextObject()) ) {
if ( dict->isEqualTo(matching, matching) )
set->setObject(dict);
}
*generationCount = getGenerationCount();
IOLockUnlock(lock);
return set;
}
bool IOCatalogue::addDrivers(
OSArray * drivers,
bool doNubMatching)
{
bool result = false;
OSCollectionIterator * iter = NULL; OSOrderedSet * set = NULL; OSDictionary * dict = NULL; OSArray * persons = NULL;
persons = OSDynamicCast(OSArray, drivers);
if (!persons) {
goto finish;
}
set = OSOrderedSet::withCapacity( 10, IOServiceOrdering,
(void *)gIOProbeScoreKey );
if (!set) {
goto finish;
}
iter = OSCollectionIterator::withCollection(persons);
if (!iter) {
goto finish;
}
result = true;
IOLockLock(lock);
while ( (dict = (OSDictionary *) iter->getNextObject()) ) {
SInt count;
UniqueProperties(dict);
count = array->getCount();
while (count--) {
OSDictionary * driver;
driver = (OSDictionary *)array->getObject(count);
if (dict->isEqualTo(driver)) {
break;
}
}
if (count >= 0) {
continue;
}
result = array->setObject(dict);
if (!result) {
break;
}
AddNewImports(set, dict);
}
if (doNubMatching && (set->getCount() > 0)) {
IOService::catalogNewDrivers(set);
generation++;
}
IOLockUnlock(lock);
finish:
if (set) set->release();
if (iter) iter->release();
return result;
}
bool
IOCatalogue::removeDrivers(
OSDictionary * matching,
bool doNubMatching)
{
OSCollectionIterator * tables;
OSDictionary * dict;
OSOrderedSet * set;
OSArray * arrayCopy;
if ( !matching )
return false;
set = OSOrderedSet::withCapacity(10,
IOServiceOrdering,
(void *)gIOProbeScoreKey);
if ( !set )
return false;
arrayCopy = OSArray::withCapacity(100);
if ( !arrayCopy ) {
set->release();
return false;
}
tables = OSCollectionIterator::withCollection(arrayCopy);
arrayCopy->release();
if ( !tables ) {
set->release();
return false;
}
UniqueProperties( matching );
IOLockLock(lock);
kernelTables->reset();
arrayCopy->merge(array);
array->flushCollection();
tables->reset();
while ( (dict = (OSDictionary *)tables->getNextObject()) ) {
if ( dict->isEqualTo(matching, matching) ) {
AddNewImports( set, dict );
continue;
}
array->setObject(dict);
}
if ( doNubMatching && (set->getCount() > 0) ) {
IOService::catalogNewDrivers(set);
generation++;
}
IOLockUnlock(lock);
set->release();
tables->release();
return true;
}
SInt32 IOCatalogue::getGenerationCount(void) const
{
return( generation );
}
bool IOCatalogue::isModuleLoaded(OSString * moduleName) const
{
return isModuleLoaded(moduleName->getCStringNoCopy());
}
bool IOCatalogue::isModuleLoaded(const char * moduleName) const
{
OSReturn ret;
ret = OSKext::loadKextWithIdentifier(moduleName);
if (kOSKextReturnDeferred == ret) {
return false;
}
return true;
}
bool IOCatalogue::isModuleLoaded(OSDictionary * driver) const
{
OSString * moduleName = NULL;
OSString * publisherName = NULL;
if ( !driver )
return false;
publisherName = OSDynamicCast(OSString,
driver->getObject(kIOPersonalityPublisherKey));
OSKext::recordIdentifierRequest(publisherName);
moduleName = OSDynamicCast(OSString, driver->getObject(gIOModuleIdentifierKey));
if ( moduleName )
return isModuleLoaded(moduleName);
return true;
}
void IOCatalogue::moduleHasLoaded(OSString * moduleName)
{
OSDictionary * dict;
dict = OSDictionary::withCapacity(2);
dict->setObject(gIOModuleIdentifierKey, moduleName);
startMatching(dict);
dict->release();
(void) OSKext::setDeferredLoadSucceeded();
(void) OSKext::considerRebuildOfPrelinkedKernel();
}
void IOCatalogue::moduleHasLoaded(const char * moduleName)
{
OSString * name;
name = OSString::withCString(moduleName);
moduleHasLoaded(name);
name->release();
}
IOReturn IOCatalogue::unloadModule(OSString * moduleName) const
{
return OSKext::removeKextWithIdentifier(moduleName->getCStringNoCopy());
}
static IOReturn _terminateDrivers(OSDictionary * matching)
{
OSDictionary * dict;
OSIterator * iter;
IOService * service;
IOReturn ret;
if ( !matching )
return kIOReturnBadArgument;
ret = kIOReturnSuccess;
dict = 0;
iter = IORegistryIterator::iterateOver(gIOServicePlane,
kIORegistryIterateRecursively);
if ( !iter )
return kIOReturnNoMemory;
UniqueProperties( matching );
do {
iter->reset();
while( (service = (IOService *)iter->getNextObject()) ) {
dict = service->getPropertyTable();
if ( !dict )
continue;
if ( !dict->isEqualTo(matching, matching) )
continue;
if ( !service->terminate(kIOServiceRequired|kIOServiceSynchronous) ) {
ret = kIOReturnUnsupported;
break;
}
}
} while( !service && !iter->isValid());
iter->release();
return ret;
}
static IOReturn _removeDrivers( OSArray * array, OSDictionary * matching )
{
OSCollectionIterator * tables;
OSDictionary * dict;
OSArray * arrayCopy;
IOReturn ret = kIOReturnSuccess;
arrayCopy = OSArray::withCapacity(100);
if ( !arrayCopy )
return kIOReturnNoMemory;
tables = OSCollectionIterator::withCollection(arrayCopy);
arrayCopy->release();
if ( !tables )
return kIOReturnNoMemory;
arrayCopy->merge(array);
array->flushCollection();
tables->reset();
while ( (dict = (OSDictionary *)tables->getNextObject()) ) {
if ( dict->isEqualTo(matching, matching) )
continue;
array->setObject(dict);
}
tables->release();
return ret;
}
IOReturn IOCatalogue::terminateDrivers(OSDictionary * matching)
{
IOReturn ret;
ret = _terminateDrivers(matching);
IOLockLock(lock);
if (kIOReturnSuccess == ret)
ret = _removeDrivers(array, matching);
kernelTables->reset();
IOLockUnlock(lock);
return ret;
}
IOReturn IOCatalogue::terminateDriversForModule(
OSString * moduleName,
bool unload)
{
IOReturn ret;
OSDictionary * dict;
bool isLoaded = false;
if (OSKext::isKextWithIdentifierLoaded(moduleName->getCStringNoCopy())) {
isLoaded = true;
if (!OSKext::canUnloadKextWithIdentifier(moduleName,
false)) {
ret = kOSKextReturnInUse;
goto finish;
}
}
dict = OSDictionary::withCapacity(1);
if (!dict) {
ret = kIOReturnNoMemory;
goto finish;
}
dict->setObject(gIOModuleIdentifierKey, moduleName);
ret = _terminateDrivers(dict);
IOLockLock(lock);
if (kIOReturnSuccess == ret) {
ret = _removeDrivers(array, dict);
}
kernelTables->reset();
if (unload && isLoaded && ret == kIOReturnSuccess) {
ret = unloadModule(moduleName);
}
IOLockUnlock(lock);
dict->release();
finish:
return ret;
}
IOReturn IOCatalogue::terminateDriversForModule(
const char * moduleName,
bool unload)
{
OSString * name;
IOReturn ret;
name = OSString::withCString(moduleName);
if ( !name )
return kIOReturnNoMemory;
ret = terminateDriversForModule(name, unload);
name->release();
return ret;
}
bool IOCatalogue::startMatching( OSDictionary * matching )
{
OSDictionary * dict;
OSOrderedSet * set;
if ( !matching )
return false;
set = OSOrderedSet::withCapacity(10, IOServiceOrdering,
(void *)gIOProbeScoreKey);
if ( !set )
return false;
IOLockLock(lock);
kernelTables->reset();
while ( (dict = (OSDictionary *)kernelTables->getNextObject()) ) {
if ( dict->isEqualTo(matching, matching) )
AddNewImports(set, dict);
}
if ( set->getCount() > 0 ) {
IOService::catalogNewDrivers(set);
generation++;
}
IOLockUnlock(lock);
set->release();
return true;
}
void IOCatalogue::reset(void)
{
IOLog("Resetting IOCatalogue.\n");
}
bool IOCatalogue::serialize(OSSerialize * s) const
{
if ( !s )
return false;
return super::serialize(s);
}
bool IOCatalogue::serializeData(IOOptionBits kind, OSSerialize * s) const
{
kern_return_t kr = kIOReturnSuccess;
switch ( kind )
{
case kIOCatalogGetContents:
if (!array->serialize(s))
kr = kIOReturnNoMemory;
break;
case kIOCatalogGetModuleDemandList:
kr = KERN_NOT_SUPPORTED;
break;
case kIOCatalogGetCacheMissList:
kr = KERN_NOT_SUPPORTED;
break;
case kIOCatalogGetROMMkextList:
kr = KERN_NOT_SUPPORTED;
break;
default:
kr = kIOReturnBadArgument;
break;
}
return kr;
}
#if PRAGMA_MARK
#pragma mark Obsolete Kext Loading Stuff
#endif
#if __ppc__ || __i386__
bool IOCatalogue::recordStartupExtensions(void)
{ return false; }
bool IOCatalogue::addExtensionsFromArchive(OSData * mkext)
{ return KERN_NOT_SUPPORTED; }
kern_return_t IOCatalogue::removeKernelLinker(void)
{ return KERN_NOT_SUPPORTED; }
#endif