#include <IOKit/system.h>
#include <IOKit/IOService.h>
#include <libkern/OSDebug.h>
#include <libkern/c++/OSContainers.h>
#include <libkern/c++/OSKext.h>
#include <libkern/c++/OSUnserialize.h>
#include <libkern/c++/OSKext.h>
#include <libkern/Block.h>
#include <IOKit/IOCatalogue.h>
#include <IOKit/IOCommand.h>
#include <IOKit/IODeviceTreeSupport.h>
#include <IOKit/IODeviceMemory.h>
#include <IOKit/IOInterrupts.h>
#include <IOKit/IOInterruptController.h>
#include <IOKit/IOPlatformExpert.h>
#include <IOKit/IOMessage.h>
#include <IOKit/IOLib.h>
#include <IOKit/IOKitKeysPrivate.h>
#include <IOKit/IOBSD.h>
#include <IOKit/IOUserClient.h>
#include <IOKit/IOUserServer.h>
#include <IOKit/IOWorkLoop.h>
#include <IOKit/IOTimeStamp.h>
#include <IOKit/IOHibernatePrivate.h>
#include <IOKit/IOInterruptAccountingPrivate.h>
#include <IOKit/IOKernelReporters.h>
#include <IOKit/AppleKeyStoreInterface.h>
#include <IOKit/pwr_mgt/RootDomain.h>
#include <IOKit/IOCPU.h>
#include <mach/sync_policy.h>
#include <mach/thread_info.h>
#include <IOKit/assert.h>
#include <sys/errno.h>
#include <sys/kdebug.h>
#include <string.h>
#include <machine/pal_routines.h>
#define LOG kprintf
#define MATCH_DEBUG 0
#define IOSERVICE_OBFUSCATE(x) ((void *)(VM_KERNEL_ADDRPERM(x)))
#define DEBUG_NOTIFIER_LOCKED 0
enum{
kIOUserServerCheckInTimeoutSecs = 120ULL
};
#include "IOServicePrivate.h"
#include "IOKitKernelInternal.h"
#define super IORegistryEntry
OSDefineMetaClassAndStructors(IOService, IORegistryEntry)
OSDefineMetaClassAndStructors(_IOServiceNotifier, IONotifier)
OSDefineMetaClassAndStructors(_IOServiceNullNotifier, IONotifier)
OSDefineMetaClassAndStructors(_IOServiceInterestNotifier, IONotifier)
OSDefineMetaClassAndStructors(_IOConfigThread, OSObject)
OSDefineMetaClassAndStructors(_IOServiceJob, OSObject)
OSDefineMetaClassAndStructors(IOResources, IOService)
OSDefineMetaClassAndStructors(IOUserResources, IOService)
OSDefineMetaClassAndStructors(_IOOpenServiceIterator, OSIterator)
OSDefineMetaClassAndAbstractStructors(IONotifier, OSObject)
static IOPlatformExpert * gIOPlatform;
static class IOPMrootDomain * gIOPMRootDomain;
const IORegistryPlane * gIOServicePlane;
const IORegistryPlane * gIOPowerPlane;
const OSSymbol * gIODeviceMemoryKey;
const OSSymbol * gIOInterruptControllersKey;
const OSSymbol * gIOInterruptSpecifiersKey;
const OSSymbol * gIOResourcesKey;
const OSSymbol * gIOUserResourcesKey;
const OSSymbol * gIOResourceMatchKey;
const OSSymbol * gIOResourceMatchedKey;
const OSSymbol * gIOResourceIOKitKey;
const OSSymbol * gIOProviderClassKey;
const OSSymbol * gIONameMatchKey;
const OSSymbol * gIONameMatchedKey;
const OSSymbol * gIOPropertyMatchKey;
const OSSymbol * gIOPropertyExistsMatchKey;
const OSSymbol * gIOLocationMatchKey;
const OSSymbol * gIOParentMatchKey;
const OSSymbol * gIOPathMatchKey;
const OSSymbol * gIOMatchCategoryKey;
const OSSymbol * gIODefaultMatchCategoryKey;
const OSSymbol * gIOMatchedServiceCountKey;
const OSSymbol * gIOMatchedPersonalityKey;
const OSSymbol * gIORematchPersonalityKey;
const OSSymbol * gIORematchCountKey;
const OSSymbol * gIODEXTMatchCountKey;
const OSSymbol * gIOSupportedPropertiesKey;
const OSSymbol * gIOUserServicePropertiesKey;
#if !CONFIG_EMBEDDED
const OSSymbol * gIOServiceLegacyMatchingRegistryIDKey;
#endif
const OSSymbol * gIOMapperIDKey;
const OSSymbol * gIOUserClientClassKey;
const OSSymbol * gIOUserClassKey;
const OSSymbol * gIOUserServerClassKey;
const OSSymbol * gIOUserServerNameKey;
const OSSymbol * gIOUserServerTagKey;
const OSSymbol * gIOUserServerCDHashKey;
const OSSymbol * gIOUserUserClientKey;
const OSSymbol * gIOKitDebugKey;
const OSSymbol * gIOCommandPoolSizeKey;
const OSSymbol * gIOConsoleLockedKey;
const OSSymbol * gIOConsoleUsersKey;
const OSSymbol * gIOConsoleSessionUIDKey;
const OSSymbol * gIOConsoleSessionAuditIDKey;
const OSSymbol * gIOConsoleUsersSeedKey;
const OSSymbol * gIOConsoleSessionOnConsoleKey;
const OSSymbol * gIOConsoleSessionLoginDoneKey;
const OSSymbol * gIOConsoleSessionSecureInputPIDKey;
const OSSymbol * gIOConsoleSessionScreenLockedTimeKey;
const OSSymbol * gIOConsoleSessionScreenIsLockedKey;
clock_sec_t gIOConsoleLockTime;
static bool gIOConsoleLoggedIn;
#if HIBERNATION
static OSBoolean * gIOConsoleBooterLockState;
static uint32_t gIOScreenLockState;
#endif
static IORegistryEntry * gIOChosenEntry;
static int gIOResourceGenerationCount;
const OSSymbol * gIOServiceKey;
const OSSymbol * gIOPublishNotification;
const OSSymbol * gIOFirstPublishNotification;
const OSSymbol * gIOMatchedNotification;
const OSSymbol * gIOFirstMatchNotification;
const OSSymbol * gIOTerminatedNotification;
const OSSymbol * gIOWillTerminateNotification;
const OSSymbol * gIOServiceDEXTEntitlementsKey;
const OSSymbol * gIODriverKitEntitlementKey;
const OSSymbol * gIODriverKitUserClientEntitlementsKey;
const OSSymbol * gIODriverKitUserClientEntitlementAllowAnyKey;
const OSSymbol * gIOMatchDeferKey;
const OSSymbol * gIOGeneralInterest;
const OSSymbol * gIOBusyInterest;
const OSSymbol * gIOAppPowerStateInterest;
const OSSymbol * gIOPriorityPowerStateInterest;
const OSSymbol * gIOConsoleSecurityInterest;
const OSSymbol * gIOBSDKey;
const OSSymbol * gIOBSDNameKey;
const OSSymbol * gIOBSDMajorKey;
const OSSymbol * gIOBSDMinorKey;
const OSSymbol * gIOBSDUnitKey;
const OSSymbol * gAKSGetKey;
#if defined(__i386__) || defined(__x86_64__)
const OSSymbol * gIOCreateEFIDevicePathSymbol;
#endif
static OSDictionary * gNotifications;
static IORecursiveLock * gNotificationLock;
static IOService * gIOResources;
static IOService * gIOUserResources;
static IOService * gIOServiceRoot;
static OSOrderedSet * gJobs;
static semaphore_port_t gJobsSemaphore;
static IOLock * gJobsLock;
static int gOutstandingJobs;
static int gNumConfigThreads;
static int gNumWaitingThreads;
static IOLock * gIOServiceBusyLock;
bool gCPUsRunning;
bool gKextdWillTerminate;
static thread_t gIOTerminateThread;
static thread_t gIOTerminateWorkerThread;
static UInt32 gIOTerminateWork;
static OSArray * gIOTerminatePhase2List;
static OSArray * gIOStopList;
static OSArray * gIOStopProviderList;
static OSArray * gIOFinalizeList;
#if !NO_KEXTD
static OSArray * gIOMatchDeferList;
#endif
static SInt32 gIOConsoleUsersSeed;
static OSData * gIOConsoleUsersSeedValue;
extern const OSSymbol * gIODTPHandleKey;
const OSSymbol * gIOPlatformFunctionHandlerSet;
static IOLock * gIOConsoleUsersLock;
static thread_call_t gIOConsoleLockCallout;
static IONotifier * gIOServiceNullNotifier;
static uint32_t gIODextRelaunchMax = 1000;
#define LOCKREADNOTIFY() \
IORecursiveLockLock( gNotificationLock )
#define LOCKWRITENOTIFY() \
IORecursiveLockLock( gNotificationLock )
#define LOCKWRITE2READNOTIFY()
#define UNLOCKNOTIFY() \
IORecursiveLockUnlock( gNotificationLock )
#define SLEEPNOTIFY(event) \
IORecursiveLockSleep( gNotificationLock, (void *)(event), THREAD_UNINT )
#define SLEEPNOTIFYTO(event, deadline) \
IORecursiveLockSleepDeadline( gNotificationLock, (void *)(event), deadline, THREAD_UNINT )
#define WAKEUPNOTIFY(event) \
IORecursiveLockWakeup( gNotificationLock, (void *)(event), false )
#define randomDelay() \
int del = read_processor_clock(); \
del = (((int)IOThreadSelf()) ^ del ^ (del >> 10)) & 0x3ff; \
IOSleep( del );
#define queue_element(entry, element, type, field) do { \
vm_address_t __ele = (vm_address_t) (entry); \
__ele -= -4 + ((size_t)(&((type) 4)->field)); \
(element) = (type) __ele; \
} while(0)
#define iterqueue(que, elt) \
for (queue_entry_t elt = queue_first(que); \
!queue_end(que, elt); \
elt = queue_next(elt))
struct IOInterruptAccountingReporter {
IOSimpleReporter * reporter;
IOInterruptAccountingData * statistics;
};
struct ArbitrationLockQueueElement {
queue_chain_t link;
IOThread thread;
IOService * service;
unsigned count;
bool required;
bool aborted;
};
static queue_head_t gArbitrationLockQueueActive;
static queue_head_t gArbitrationLockQueueWaiting;
static queue_head_t gArbitrationLockQueueFree;
static IOLock * gArbitrationLockQueueLock;
bool
IOService::isInactive( void ) const
{
return 0 != (kIOServiceInactiveState & getState());
}
#if defined(__i386__) || defined(__x86_64__)
struct CpuDelayEntry {
IOService * fService;
UInt32 fMaxDelay;
UInt32 fDelayType;
};
enum {
kCpuDelayBusStall, kCpuDelayInterrupt,
kCpuNumDelayTypes
};
static OSData *sCpuDelayData = OSData::withCapacity(8 * sizeof(CpuDelayEntry));
static IORecursiveLock *sCpuDelayLock = IORecursiveLockAlloc();
static OSArray *sCpuLatencyHandlers[kCpuNumDelayTypes];
const OSSymbol *sCPULatencyFunctionName[kCpuNumDelayTypes];
static OSNumber * sCPULatencyHolder[kCpuNumDelayTypes];
static char sCPULatencyHolderName[kCpuNumDelayTypes][128];
static OSNumber * sCPULatencySet[kCpuNumDelayTypes];
static void
requireMaxCpuDelay(IOService * service, UInt32 ns, UInt32 delayType);
static IOReturn
setLatencyHandler(UInt32 delayType, IOService * target, bool enable);
#endif
namespace IOServicePH
{
IONotifier * fRootNotifier;
OSArray * fUserServers;
OSArray * fUserServersWait;
OSArray * fMatchingWork;
OSArray * fMatchingDelayed;
IOService * fSystemPowerAckTo;
uint32_t fSystemPowerAckRef;
uint8_t fSystemOff;
uint8_t fUserServerOff;
void lock();
void unlock();
void init(IOPMrootDomain * root);
IOReturn systemPowerChange(
void * target,
void * refCon,
UInt32 messageType, IOService * service,
void * messageArgument, vm_size_t argSize);
bool matchingStart(IOService * service);
void matchingEnd(IOService * service);
};
void
IOService::initialize( void )
{
kern_return_t err;
gIOServicePlane = IORegistryEntry::makePlane( kIOServicePlane );
gIOPowerPlane = IORegistryEntry::makePlane( kIOPowerPlane );
gIOProviderClassKey = OSSymbol::withCStringNoCopy( kIOProviderClassKey );
gIONameMatchKey = OSSymbol::withCStringNoCopy( kIONameMatchKey );
gIONameMatchedKey = OSSymbol::withCStringNoCopy( kIONameMatchedKey );
gIOPropertyMatchKey = OSSymbol::withCStringNoCopy( kIOPropertyMatchKey );
gIOPropertyExistsMatchKey = OSSymbol::withCStringNoCopy( kIOPropertyExistsMatchKey );
gIOPathMatchKey = OSSymbol::withCStringNoCopy( kIOPathMatchKey );
gIOLocationMatchKey = OSSymbol::withCStringNoCopy( kIOLocationMatchKey );
gIOParentMatchKey = OSSymbol::withCStringNoCopy( kIOParentMatchKey );
gIOMatchCategoryKey = OSSymbol::withCStringNoCopy( kIOMatchCategoryKey );
gIODefaultMatchCategoryKey = OSSymbol::withCStringNoCopy(
kIODefaultMatchCategoryKey );
gIOMatchedServiceCountKey = OSSymbol::withCStringNoCopy(
kIOMatchedServiceCountKey );
gIOMatchedPersonalityKey = OSSymbol::withCStringNoCopy(
kIOMatchedPersonalityKey );
gIORematchPersonalityKey = OSSymbol::withCStringNoCopy(
kIORematchPersonalityKey );
gIORematchCountKey = OSSymbol::withCStringNoCopy(
kIORematchCountKey );
gIODEXTMatchCountKey = OSSymbol::withCStringNoCopy(
kIODEXTMatchCountKey );
#if !CONFIG_EMBEDDED
gIOServiceLegacyMatchingRegistryIDKey = OSSymbol::withCStringNoCopy(
kIOServiceLegacyMatchingRegistryIDKey );
#endif
PE_parse_boot_argn("dextrelaunch", &gIODextRelaunchMax, sizeof(gIODextRelaunchMax));
gIOUserClientClassKey = OSSymbol::withCStringNoCopy( kIOUserClientClassKey );
gIOUserClassKey = OSSymbol::withCStringNoCopy(kIOUserClassKey);
gIOUserServerClassKey = OSSymbol::withCStringNoCopy(kIOUserServerClassKey);
gIOUserServerNameKey = OSSymbol::withCStringNoCopy(kIOUserServerNameKey);
gIOUserServerTagKey = OSSymbol::withCStringNoCopy(kIOUserServerTagKey);
gIOUserServerCDHashKey = OSSymbol::withCStringNoCopy(kIOUserServerCDHashKey);
gIOUserUserClientKey = OSSymbol::withCStringNoCopy(kIOUserUserClientKey);
gIOResourcesKey = OSSymbol::withCStringNoCopy( kIOResourcesClass );
gIOResourceMatchKey = OSSymbol::withCStringNoCopy( kIOResourceMatchKey );
gIOResourceMatchedKey = OSSymbol::withCStringNoCopy( kIOResourceMatchedKey );
gIOResourceIOKitKey = OSSymbol::withCStringNoCopy("IOKit");
gIODeviceMemoryKey = OSSymbol::withCStringNoCopy( "IODeviceMemory" );
gIOInterruptControllersKey
= OSSymbol::withCStringNoCopy("IOInterruptControllers");
gIOInterruptSpecifiersKey
= OSSymbol::withCStringNoCopy("IOInterruptSpecifiers");
gIOSupportedPropertiesKey = OSSymbol::withCStringNoCopy(kIOSupportedPropertiesKey);
gIOUserServicePropertiesKey = OSSymbol::withCStringNoCopy(kIOUserServicePropertiesKey);
gIOMapperIDKey = OSSymbol::withCStringNoCopy(kIOMapperIDKey);
gIOKitDebugKey = OSSymbol::withCStringNoCopy( kIOKitDebugKey );
gIOCommandPoolSizeKey = OSSymbol::withCStringNoCopy( kIOCommandPoolSizeKey );
gIOGeneralInterest = OSSymbol::withCStringNoCopy( kIOGeneralInterest );
gIOBusyInterest = OSSymbol::withCStringNoCopy( kIOBusyInterest );
gIOAppPowerStateInterest = OSSymbol::withCStringNoCopy( kIOAppPowerStateInterest );
gIOPriorityPowerStateInterest = OSSymbol::withCStringNoCopy( kIOPriorityPowerStateInterest );
gIOConsoleSecurityInterest = OSSymbol::withCStringNoCopy( kIOConsoleSecurityInterest );
gIOBSDKey = OSSymbol::withCStringNoCopy(kIOBSDKey);
gIOBSDNameKey = OSSymbol::withCStringNoCopy(kIOBSDNameKey);
gIOBSDMajorKey = OSSymbol::withCStringNoCopy(kIOBSDMajorKey);
gIOBSDMinorKey = OSSymbol::withCStringNoCopy(kIOBSDMinorKey);
gIOBSDUnitKey = OSSymbol::withCStringNoCopy(kIOBSDUnitKey);
gNotifications = OSDictionary::withCapacity( 1 );
gIOPublishNotification = OSSymbol::withCStringNoCopy(
kIOPublishNotification );
gIOFirstPublishNotification = OSSymbol::withCStringNoCopy(
kIOFirstPublishNotification );
gIOMatchedNotification = OSSymbol::withCStringNoCopy(
kIOMatchedNotification );
gIOFirstMatchNotification = OSSymbol::withCStringNoCopy(
kIOFirstMatchNotification );
gIOTerminatedNotification = OSSymbol::withCStringNoCopy(
kIOTerminatedNotification );
gIOWillTerminateNotification = OSSymbol::withCStringNoCopy(
kIOWillTerminateNotification );
gIOServiceKey = OSSymbol::withCStringNoCopy( kIOServiceClass);
gIOConsoleLockedKey = OSSymbol::withCStringNoCopy( kIOConsoleLockedKey);
gIOConsoleUsersKey = OSSymbol::withCStringNoCopy( kIOConsoleUsersKey);
gIOConsoleSessionUIDKey = OSSymbol::withCStringNoCopy( kIOConsoleSessionUIDKey);
gIOConsoleSessionAuditIDKey = OSSymbol::withCStringNoCopy( kIOConsoleSessionAuditIDKey);
gIOConsoleUsersSeedKey = OSSymbol::withCStringNoCopy(kIOConsoleUsersSeedKey);
gIOConsoleSessionOnConsoleKey = OSSymbol::withCStringNoCopy(kIOConsoleSessionOnConsoleKey);
gIOConsoleSessionLoginDoneKey = OSSymbol::withCStringNoCopy(kIOConsoleSessionLoginDoneKey);
gIOConsoleSessionSecureInputPIDKey = OSSymbol::withCStringNoCopy(kIOConsoleSessionSecureInputPIDKey);
gIOConsoleSessionScreenLockedTimeKey = OSSymbol::withCStringNoCopy(kIOConsoleSessionScreenLockedTimeKey);
gIOConsoleSessionScreenIsLockedKey = OSSymbol::withCStringNoCopy(kIOConsoleSessionScreenIsLockedKey);
gIOConsoleUsersSeedValue = OSData::withBytesNoCopy(&gIOConsoleUsersSeed, sizeof(gIOConsoleUsersSeed));
gIOServiceDEXTEntitlementsKey = OSSymbol::withCStringNoCopy( kIOServiceDEXTEntitlementsKey );
gIODriverKitEntitlementKey = OSSymbol::withCStringNoCopy( kIODriverKitEntitlementKey );
gIODriverKitUserClientEntitlementsKey = OSSymbol::withCStringNoCopy( kIODriverKitUserClientEntitlementsKey );
gIODriverKitUserClientEntitlementAllowAnyKey = OSSymbol::withCStringNoCopy( kIODriverKitUserClientEntitlementAllowAnyKey );
gIOMatchDeferKey = OSSymbol::withCStringNoCopy( kIOMatchDeferKey );
gIOPlatformFunctionHandlerSet = OSSymbol::withCStringNoCopy(kIOPlatformFunctionHandlerSet);
#if defined(__i386__) || defined(__x86_64__)
sCPULatencyFunctionName[kCpuDelayBusStall] = OSSymbol::withCStringNoCopy(kIOPlatformFunctionHandlerMaxBusDelay);
sCPULatencyFunctionName[kCpuDelayInterrupt] = OSSymbol::withCStringNoCopy(kIOPlatformFunctionHandlerMaxInterruptDelay);
uint32_t idx;
for (idx = 0; idx < kCpuNumDelayTypes; idx++) {
sCPULatencySet[idx] = OSNumber::withNumber(-1U, 32);
sCPULatencyHolder[idx] = OSNumber::withNumber(0ULL, 64);
assert(sCPULatencySet[idx] && sCPULatencyHolder[idx]);
}
gIOCreateEFIDevicePathSymbol = OSSymbol::withCString("CreateEFIDevicePath");
#endif
gNotificationLock = IORecursiveLockAlloc();
gAKSGetKey = OSSymbol::withCStringNoCopy(AKS_PLATFORM_FUNCTION_GETKEY);
assert( gIOServicePlane && gIODeviceMemoryKey
&& gIOInterruptControllersKey && gIOInterruptSpecifiersKey
&& gIOResourcesKey && gNotifications && gNotificationLock
&& gIOProviderClassKey && gIONameMatchKey && gIONameMatchedKey
&& gIOMatchCategoryKey && gIODefaultMatchCategoryKey
&& gIOPublishNotification && gIOMatchedNotification
&& gIOTerminatedNotification && gIOServiceKey
&& gIOConsoleUsersKey && gIOConsoleSessionUIDKey
&& gIOConsoleSessionOnConsoleKey && gIOConsoleSessionSecureInputPIDKey
&& gIOConsoleUsersSeedKey && gIOConsoleUsersSeedValue);
gJobsLock = IOLockAlloc();
gJobs = OSOrderedSet::withCapacity( 10 );
gIOServiceBusyLock = IOLockAlloc();
gIOConsoleUsersLock = IOLockAlloc();
err = semaphore_create(kernel_task, &gJobsSemaphore, SYNC_POLICY_FIFO, 0);
gIOConsoleLockCallout = thread_call_allocate(&IOService::consoleLockTimer, NULL);
IORegistryEntry::getRegistryRoot()->setProperty(gIOConsoleLockedKey, kOSBooleanTrue);
assert( gIOServiceBusyLock && gJobs && gJobsLock && gIOConsoleUsersLock
&& gIOConsoleLockCallout && (err == KERN_SUCCESS));
gIOResources = IOResources::resources();
gIOUserResources = IOUserResources::resources();
assert( gIOResources && gIOUserResources );
gIOServiceNullNotifier = OSTypeAlloc(_IOServiceNullNotifier);
assert(gIOServiceNullNotifier);
gArbitrationLockQueueLock = IOLockAlloc();
queue_init(&gArbitrationLockQueueActive);
queue_init(&gArbitrationLockQueueWaiting);
queue_init(&gArbitrationLockQueueFree);
assert( gArbitrationLockQueueLock );
gIOTerminatePhase2List = OSArray::withCapacity( 2 );
gIOStopList = OSArray::withCapacity( 16 );
gIOStopProviderList = OSArray::withCapacity( 16 );
gIOFinalizeList = OSArray::withCapacity( 16 );
#if !NO_KEXTD
gIOMatchDeferList = OSArray::withCapacity( 16 );
#endif
assert( gIOTerminatePhase2List && gIOStopList && gIOStopProviderList && gIOFinalizeList );
kernel_thread_start(&terminateThread, NULL, &gIOTerminateWorkerThread);
assert(gIOTerminateWorkerThread);
thread_set_thread_name(gIOTerminateWorkerThread, "IOServiceTerminateThread");
}
#if defined(__i386__) || defined(__x86_64__)
extern "C" {
const char *getCpuDelayBusStallHolderName(void);
const char *
getCpuDelayBusStallHolderName(void)
{
return sCPULatencyHolderName[kCpuDelayBusStall];
}
const char *getCpuInterruptDelayHolderName(void);
const char *
getCpuInterruptDelayHolderName(void)
{
return sCPULatencyHolderName[kCpuDelayInterrupt];
}
}
#endif
#if IOMATCHDEBUG
static UInt64
getDebugFlags( OSDictionary * props )
{
OSNumber * debugProp;
UInt64 debugFlags;
debugProp = OSDynamicCast( OSNumber,
props->getObject( gIOKitDebugKey ));
if (debugProp) {
debugFlags = debugProp->unsigned64BitValue();
} else {
debugFlags = gIOKitDebug;
}
return debugFlags;
}
static UInt64
getDebugFlags( IOService * inst )
{
OSObject * prop;
OSNumber * debugProp;
UInt64 debugFlags;
prop = inst->copyProperty(gIOKitDebugKey);
debugProp = OSDynamicCast(OSNumber, prop);
if (debugProp) {
debugFlags = debugProp->unsigned64BitValue();
} else {
debugFlags = gIOKitDebug;
}
OSSafeReleaseNULL(prop);
return debugFlags;
}
#endif
IOService *
IOService::probe( IOService * provider,
SInt32 * score )
{
return this;
}
bool
IOService::start( IOService * provider )
{
return true;
}
void
IOService::stop( IOService * provider )
{
if (reserved->uvars && reserved->uvars->started && reserved->uvars->userServer) {
reserved->uvars->userServer->serviceStop(this, provider);
}
}
bool
IOService::init( OSDictionary * dictionary )
{
bool ret;
ret = super::init(dictionary);
if (!ret) {
return false;
}
if (reserved) {
return true;
}
reserved = IONew(ExpansionData, 1);
if (!reserved) {
return false;
}
bzero(reserved, sizeof(*reserved));
reserved->interruptStatisticsLock = IOLockAlloc();
if (!reserved->interruptStatisticsLock) {
return false;
}
return true;
}
bool
IOService::init( IORegistryEntry * from,
const IORegistryPlane * inPlane )
{
bool ret;
ret = super::init(from, inPlane);
if (!ret) {
return false;
}
if (reserved) {
return true;
}
reserved = IONew(ExpansionData, 1);
if (!reserved) {
return false;
}
bzero(reserved, sizeof(*reserved));
reserved->interruptStatisticsLock = IOLockAlloc();
if (!reserved->interruptStatisticsLock) {
return false;
}
return true;
}
void
IOService::free( void )
{
int i = 0;
requireMaxBusStall(0);
requireMaxInterruptDelay(0);
if (getPropertyTable()) {
unregisterAllInterest();
}
PMfree();
if (reserved) {
if (reserved->interruptStatisticsArray) {
for (i = 0; i < reserved->interruptStatisticsArrayCount; i++) {
if (reserved->interruptStatisticsArray[i].reporter) {
reserved->interruptStatisticsArray[i].reporter->release();
}
}
IODelete(reserved->interruptStatisticsArray, IOInterruptAccountingReporter, reserved->interruptStatisticsArrayCount);
}
if (reserved->interruptStatisticsLock) {
IOLockFree(reserved->interruptStatisticsLock);
}
if (reserved->uvars && reserved->uvars->userServer) {
reserved->uvars->userServer->serviceFree(this);
}
IODelete(reserved, ExpansionData, 1);
}
if (_numInterruptSources && _interruptSources) {
for (i = 0; i < _numInterruptSources; i++) {
void * block = _interruptSourcesPrivate(this)[i].vectorBlock;
if (block) {
Block_release(block);
}
}
IOFree(_interruptSources,
_numInterruptSources * sizeofAllIOInterruptSource);
_interruptSources = NULL;
}
super::free();
}
bool
IOService::attach( IOService * provider )
{
bool ok;
uint32_t count;
AbsoluteTime deadline;
int waitResult = THREAD_AWAKENED;
bool wait, computeDeadline = true;
if (provider) {
if (gIOKitDebug & kIOLogAttach) {
LOG( "%s::attach(%s)\n", getName(),
provider->getName());
}
ok = false;
do{
wait = false;
provider->lockForArbitration();
if (provider->__state[0] & kIOServiceInactiveState) {
ok = false;
} else {
count = provider->getChildCount(gIOServicePlane);
wait = (count > (kIOServiceBusyMax - 4));
if (!wait) {
ok = attachToParent(provider, gIOServicePlane);
} else {
IOLog("stalling for detach from %s\n", provider->getName());
IOLockLock( gIOServiceBusyLock );
provider->__state[1] |= kIOServiceWaitDetachState;
}
}
provider->unlockForArbitration();
if (wait) {
if (computeDeadline) {
clock_interval_to_deadline(15, kSecondScale, &deadline);
computeDeadline = false;
}
assert_wait_deadline((event_t)&provider->__provider, THREAD_UNINT, deadline);
IOLockUnlock( gIOServiceBusyLock );
waitResult = thread_block(THREAD_CONTINUE_NULL);
wait = (waitResult != THREAD_TIMED_OUT);
}
}while (wait);
} else {
gIOServiceRoot = this;
ok = attachToParent( getRegistryRoot(), gIOServicePlane);
}
if (ok && !__provider) {
(void) getProvider();
}
return ok;
}
IOService *
IOService::getServiceRoot( void )
{
return gIOServiceRoot;
}
void
IOService::detach( IOService * provider )
{
IOService * newProvider = NULL;
SInt32 busy;
bool adjParent;
if (gIOKitDebug & kIOLogAttach) {
LOG("%s::detach(%s)\n", getName(), provider->getName());
}
#if !NO_KEXTD
IOLockLock(gJobsLock);
if (gIOMatchDeferList) {
auto idx = gIOMatchDeferList->getNextIndexOfObject(this, 0);
if (-1U != idx) {
gIOMatchDeferList->removeObject(idx);
}
}
if (IOServicePH::fMatchingDelayed) {
auto idx = IOServicePH::fMatchingDelayed->getNextIndexOfObject(this, 0);
if (-1U != idx) {
IOServicePH::fMatchingDelayed->removeObject(idx);
}
}
IOLockUnlock(gJobsLock);
#endif
lockForArbitration();
uint64_t regID1 = provider->getRegistryEntryID();
uint64_t regID2 = getRegistryEntryID();
IOServiceTrace(
IOSERVICE_DETACH,
(uintptr_t) regID1,
(uintptr_t) (regID1 >> 32),
(uintptr_t) regID2,
(uintptr_t) (regID2 >> 32));
adjParent = ((busy = (__state[1] & kIOServiceBusyStateMask))
&& (provider == getProvider()));
detachFromParent( provider, gIOServicePlane );
if (busy) {
newProvider = getProvider();
if (busy && (__state[1] & kIOServiceTermPhase3State) && (NULL == newProvider)) {
_adjustBusy( -busy );
}
}
if (kIOServiceInactiveState & __state[0]) {
getMetaClass()->removeInstance(this);
IORemoveServicePlatformActions(this);
}
unlockForArbitration();
if (newProvider && adjParent) {
newProvider->lockForArbitration();
newProvider->_adjustBusy(1);
newProvider->unlockForArbitration();
}
if (provider->lockForArbitration( true )) {
if (kIOServiceStartState & __state[1]) {
provider->scheduleTerminatePhase2();
}
if (adjParent) {
provider->_adjustBusy( -1 );
}
if ((provider->__state[1] & kIOServiceTermPhase3State)
&& (NULL == provider->getClient())) {
provider->scheduleFinalize(false);
}
IOLockLock( gIOServiceBusyLock );
if (kIOServiceWaitDetachState & provider->__state[1]) {
provider->__state[1] &= ~kIOServiceWaitDetachState;
thread_wakeup(&provider->__provider);
}
IOLockUnlock( gIOServiceBusyLock );
provider->unlockForArbitration();
}
}
void
IOService::registerService( IOOptionBits options )
{
char * pathBuf;
const char * path;
char * skip;
int len;
enum { kMaxPathLen = 256 };
enum { kMaxChars = 63 };
IORegistryEntry * parent = this;
IORegistryEntry * root = getRegistryRoot();
while (parent && (parent != root)) {
parent = parent->getParentEntry( gIOServicePlane);
}
if (parent != root) {
IOLog("%s: not registry member at registerService()\n", getName());
return;
}
if (gIOPlatform && (!gIOPlatform->platformAdjustService(this))) {
return;
}
IOInstallServicePlatformActions(this);
if ((this != gIOResources)
&& (kIOLogRegister & gIOKitDebug)) {
pathBuf = (char *) IOMalloc( kMaxPathLen );
IOLog( "Registering: " );
len = kMaxPathLen;
if (pathBuf && getPath( pathBuf, &len, gIOServicePlane)) {
path = pathBuf;
if (len > kMaxChars) {
IOLog("..");
len -= kMaxChars;
path += len;
if ((skip = strchr( path, '/'))) {
path = skip;
}
}
} else {
path = getName();
}
IOLog( "%s\n", path );
if (pathBuf) {
IOFree( pathBuf, kMaxPathLen );
}
}
startMatching( options );
}
void
IOService::startMatching( IOOptionBits options )
{
IOService * provider;
UInt32 prevBusy = 0;
bool needConfig;
bool needWake = false;
bool ok;
bool sync;
bool waitAgain;
lockForArbitration();
sync = (options & kIOServiceSynchronous)
|| ((provider = getProvider())
&& (provider->__state[1] & kIOServiceSynchronousState));
if (options & kIOServiceAsynchronous) {
sync = false;
}
needConfig = (0 == (__state[1] & (kIOServiceNeedConfigState | kIOServiceConfigRunning)))
&& (0 == (__state[0] & kIOServiceInactiveState));
__state[1] |= kIOServiceNeedConfigState;
if (needConfig) {
needWake = (0 != (kIOServiceSyncPubState & __state[1]));
}
if (sync) {
__state[1] |= kIOServiceSynchronousState;
} else {
__state[1] &= ~kIOServiceSynchronousState;
}
if (needConfig) {
prevBusy = _adjustBusy( 1 );
}
unlockForArbitration();
if (needConfig) {
if (needWake) {
IOLockLock( gIOServiceBusyLock );
thread_wakeup((event_t) this );
IOLockUnlock( gIOServiceBusyLock );
} else if (!sync || (kIOServiceAsynchronous & options)) {
ok = (NULL != _IOServiceJob::startJob( this, kMatchNubJob, options ));
} else {
do {
if ((__state[1] & kIOServiceNeedConfigState)) {
doServiceMatch( options );
}
lockForArbitration();
IOLockLock( gIOServiceBusyLock );
waitAgain = ((prevBusy < (__state[1] & kIOServiceBusyStateMask))
&& (0 == (__state[0] & kIOServiceInactiveState)));
if (waitAgain) {
__state[1] |= kIOServiceSyncPubState | kIOServiceBusyWaiterState;
} else {
__state[1] &= ~kIOServiceSyncPubState;
}
unlockForArbitration();
if (waitAgain) {
assert_wait((event_t) this , THREAD_UNINT);
}
IOLockUnlock( gIOServiceBusyLock );
if (waitAgain) {
thread_block(THREAD_CONTINUE_NULL);
}
} while (waitAgain);
}
}
}
void
IOService::startDeferredMatches(void)
{
#if !NO_KEXTD
OSArray * array;
IOLockLock(gJobsLock);
array = gIOMatchDeferList;
gIOMatchDeferList = NULL;
IOLockUnlock(gJobsLock);
if (array) {
IOLog("deferred rematching count %d\n", array->getCount());
array->iterateObjects(^bool (OSObject * obj)
{
((IOService *)obj)->startMatching(kIOServiceAsynchronous);
return false;
});
array->release();
}
#endif
}
void
IOService::kextdLaunched(void)
{
#if !NO_KEXTD
IOServiceTrace(IOSERVICE_KEXTD_READY, 0, 0, 0, 0);
startDeferredMatches();
getServiceRoot()->adjustBusy(-1);
IOService::publishUserResource(gIOResourceIOKitKey);
#endif
}
IOReturn
IOService::catalogNewDrivers( OSOrderedSet * newTables )
{
OSDictionary * table;
OSSet * set;
OSSet * allSet = NULL;
IOService * service;
#if IOMATCHDEBUG
SInt32 count = 0;
#endif
newTables->retain();
while ((table = (OSDictionary *) newTables->getFirstObject())) {
LOCKWRITENOTIFY();
set = (OSSet *) copyExistingServices( table,
kIOServiceRegisteredState,
kIOServiceExistingSet);
UNLOCKNOTIFY();
if (set) {
#if IOMATCHDEBUG
count += set->getCount();
#endif
if (allSet) {
allSet->merge((const OSSet *) set);
set->release();
} else {
allSet = set;
}
}
#if IOMATCHDEBUG
if (getDebugFlags( table ) & kIOLogMatch) {
LOG("Matching service count = %ld\n", (long)count);
}
#endif
newTables->removeObject(table);
}
if (allSet) {
while ((service = (IOService *) allSet->getAnyObject())) {
service->startMatching(kIOServiceAsynchronous);
allSet->removeObject(service);
}
allSet->release();
}
newTables->release();
return kIOReturnSuccess;
}
_IOServiceJob *
_IOServiceJob::startJob( IOService * nub, int type,
IOOptionBits options )
{
_IOServiceJob * job;
job = new _IOServiceJob;
if (job && !job->init()) {
job->release();
job = NULL;
}
if (job) {
job->type = type;
job->nub = nub;
job->options = options;
nub->retain(); pingConfig( job );
}
return job;
}
bool
IOService::matchPropertyTable( OSDictionary * table, SInt32 * score )
{
return matchPropertyTable(table);
}
bool
IOService::matchPropertyTable( OSDictionary * table )
{
return true;
}
IOReturn
IOService::getResources( void )
{
return kIOReturnSuccess;
}
IOService *
IOService::getProvider( void ) const
{
IOService * self = (IOService *) this;
IOService * parent;
SInt32 generation;
generation = getRegistryEntryGenerationCount();
if (__providerGeneration == generation) {
return __provider;
}
parent = (IOService *) getParentEntry( gIOServicePlane);
if (parent == IORegistryEntry::getRegistryRoot()) {
parent = NULL;
}
self->__provider = parent;
OSMemoryBarrier();
self->__providerGeneration = generation;
return parent;
}
IOWorkLoop *
IOService::getWorkLoop() const
{
IOService *provider = getProvider();
if (provider) {
return provider->getWorkLoop();
} else {
return NULL;
}
}
OSIterator *
IOService::getProviderIterator( void ) const
{
return getParentIterator( gIOServicePlane);
}
IOService *
IOService::getClient( void ) const
{
return (IOService *) getChildEntry( gIOServicePlane);
}
OSIterator *
IOService::getClientIterator( void ) const
{
return getChildIterator( gIOServicePlane);
}
OSIterator *
_IOOpenServiceIterator::iterator( OSIterator * _iter,
const IOService * client,
const IOService * provider )
{
_IOOpenServiceIterator * inst;
if (!_iter) {
return NULL;
}
inst = new _IOOpenServiceIterator;
if (inst && !inst->init()) {
inst->release();
inst = NULL;
}
if (inst) {
inst->iter = _iter;
inst->client = client;
inst->provider = provider;
}
return inst;
}
void
_IOOpenServiceIterator::free()
{
iter->release();
if (last) {
last->unlockForArbitration();
}
OSIterator::free();
}
OSObject *
_IOOpenServiceIterator::getNextObject()
{
IOService * next;
if (last) {
last->unlockForArbitration();
}
while ((next = (IOService *) iter->getNextObject())) {
next->lockForArbitration();
if ((client && (next->isOpen( client )))
|| (provider && (provider->isOpen( next )))) {
break;
}
next->unlockForArbitration();
}
last = next;
return next;
}
bool
_IOOpenServiceIterator::isValid()
{
return iter->isValid();
}
void
_IOOpenServiceIterator::reset()
{
if (last) {
last->unlockForArbitration();
last = NULL;
}
iter->reset();
}
OSIterator *
IOService::getOpenProviderIterator( void ) const
{
return _IOOpenServiceIterator::iterator( getProviderIterator(), this, NULL );
}
OSIterator *
IOService::getOpenClientIterator( void ) const
{
return _IOOpenServiceIterator::iterator( getClientIterator(), NULL, this );
}
IOReturn
IOService::callPlatformFunction( const OSSymbol * functionName,
bool waitForFunction,
void *param1, void *param2,
void *param3, void *param4 )
{
IOReturn result = kIOReturnUnsupported;
IOService *provider;
if (functionName == gIOPlatformQuiesceActionKey ||
functionName == gIOPlatformActiveActionKey) {
if (gEnforceQuiesceSafety) {
panic("Class %s passed the quiesce/active action to IOService",
getMetaClass()->getClassName());
}
}
if (gIOPlatformFunctionHandlerSet == functionName) {
#if defined(__i386__) || defined(__x86_64__)
const OSSymbol * functionHandlerName = (const OSSymbol *) param1;
IOService * target = (IOService *) param2;
bool enable = (param3 != NULL);
if (sCPULatencyFunctionName[kCpuDelayBusStall] == functionHandlerName) {
result = setLatencyHandler(kCpuDelayBusStall, target, enable);
} else if (sCPULatencyFunctionName[kCpuDelayInterrupt] == param1) {
result = setLatencyHandler(kCpuDelayInterrupt, target, enable);
}
#endif
}
if ((kIOReturnUnsupported == result) && (provider = getProvider())) {
result = provider->callPlatformFunction(functionName, waitForFunction,
param1, param2, param3, param4);
}
return result;
}
IOReturn
IOService::callPlatformFunction( const char * functionName,
bool waitForFunction,
void *param1, void *param2,
void *param3, void *param4 )
{
IOReturn result = kIOReturnNoMemory;
const OSSymbol *functionSymbol = OSSymbol::withCString(functionName);
if (functionSymbol != NULL) {
result = callPlatformFunction(functionSymbol, waitForFunction,
param1, param2, param3, param4);
functionSymbol->release();
}
return result;
}
IOPlatformExpert *
IOService::getPlatform( void )
{
return gIOPlatform;
}
class IOPMrootDomain *
IOService::getPMRootDomain( void )
{
return gIOPMRootDomain;
}
IOService *
IOService::getResourceService( void )
{
return gIOResources;
}
void
IOService::setPlatform( IOPlatformExpert * platform)
{
gIOPlatform = platform;
gIOResources->attachToParent( gIOServiceRoot, gIOServicePlane );
gIOUserResources->attachToParent( gIOServiceRoot, gIOServicePlane );
#if defined(__i386__) || defined(__x86_64__)
static const char * keys[kCpuNumDelayTypes] = {
kIOPlatformMaxBusDelay, kIOPlatformMaxInterruptDelay };
const OSObject * objs[2];
OSArray * array;
uint32_t idx;
for (idx = 0; idx < kCpuNumDelayTypes; idx++) {
objs[0] = sCPULatencySet[idx];
objs[1] = sCPULatencyHolder[idx];
array = OSArray::withObjects(objs, 2);
if (!array) {
break;
}
platform->setProperty(keys[idx], array);
array->release();
}
#endif
}
void
IOService::setPMRootDomain( class IOPMrootDomain * rootDomain)
{
gIOPMRootDomain = rootDomain;
publishResource(gIOResourceIOKitKey);
IOServicePH::init(rootDomain);
}
bool
IOService::lockForArbitration( bool isSuccessRequired )
{
bool found;
bool success;
ArbitrationLockQueueElement * element;
ArbitrationLockQueueElement * active;
ArbitrationLockQueueElement * waiting;
enum { kPutOnFreeQueue, kPutOnActiveQueue, kPutOnWaitingQueue } action;
IOTakeLock( gArbitrationLockQueueLock );
if (!queue_empty( &gArbitrationLockQueueFree )) {
queue_remove_first( &gArbitrationLockQueueFree,
element,
ArbitrationLockQueueElement *,
link );
} else {
element = IONew( ArbitrationLockQueueElement, 1 );
assert( element );
}
element->thread = IOThreadSelf();
element->service = this;
element->count = 1;
element->required = isSuccessRequired;
element->aborted = false;
found = false;
queue_iterate( &gArbitrationLockQueueActive,
active,
ArbitrationLockQueueElement *,
link )
{
if (active->service == element->service) {
found = true;
break;
}
}
if (found) { if (active->thread != element->thread) { ArbitrationLockQueueElement * victim = NULL;
while (1) {
found = false;
queue_iterate( &gArbitrationLockQueueWaiting,
waiting,
ArbitrationLockQueueElement *,
link )
{
if (waiting->thread == active->thread) {
assert( false == waiting->aborted );
found = true;
break;
}
}
if (found) { if (false == waiting->required) {
victim = waiting;
}
found = false;
queue_iterate( &gArbitrationLockQueueActive,
active, ArbitrationLockQueueElement *,
link )
{
if (active->service == waiting->service) {
found = true;
break;
}
}
assert( found );
if (active->thread == element->thread) {
if (false == element->required) { success = false; break; } else { if (victim) {
victim->aborted = true;
queue_remove( &gArbitrationLockQueueWaiting,
victim,
ArbitrationLockQueueElement *,
link );
IOLockWakeup( gArbitrationLockQueueLock,
victim,
true );
success = true; break; } else {
panic("I/O Kit: Unrecoverable deadlock.");
}
}
} else {
}
} else { success = true; break; }
}
if (success) { kern_return_t wait_result;
queue_enter( &gArbitrationLockQueueWaiting,
element,
ArbitrationLockQueueElement *,
link );
restart_sleep: wait_result = assert_wait( element,
element->required ? THREAD_UNINT
: THREAD_INTERRUPTIBLE );
IOUnlock( gArbitrationLockQueueLock );
if (wait_result == THREAD_WAITING) {
wait_result = thread_block(THREAD_CONTINUE_NULL);
}
if (THREAD_INTERRUPTED == wait_result) {
IOTakeLock( gArbitrationLockQueueLock );
found = false;
queue_iterate( &gArbitrationLockQueueWaiting,
waiting, ArbitrationLockQueueElement *,
link )
{
if (waiting == element) {
found = true;
break;
}
}
if (found) { if (false == element->required) {
element->aborted = true;
queue_remove( &gArbitrationLockQueueWaiting,
element,
ArbitrationLockQueueElement *,
link );
} else { goto restart_sleep;
}
}
IOUnlock( gArbitrationLockQueueLock );
wait_result = THREAD_AWAKENED;
}
assert( THREAD_AWAKENED == wait_result );
if (element->aborted) {
assert( false == element->required );
IOTakeLock( gArbitrationLockQueueLock );
action = kPutOnFreeQueue;
success = false;
} else { return true;
}
} else { action = kPutOnFreeQueue;
}
} else { active->count++;
action = kPutOnFreeQueue;
success = true;
}
} else { action = kPutOnActiveQueue;
success = true;
}
if (kPutOnActiveQueue == action) {
queue_enter( &gArbitrationLockQueueActive,
element,
ArbitrationLockQueueElement *,
link );
} else if (kPutOnFreeQueue == action) {
queue_enter( &gArbitrationLockQueueFree,
element,
ArbitrationLockQueueElement *,
link );
} else {
assert( 0 ); }
IOUnlock( gArbitrationLockQueueLock );
return success;
}
void
IOService::unlockForArbitration( void )
{
bool found;
ArbitrationLockQueueElement * element;
IOTakeLock( gArbitrationLockQueueLock );
found = false;
queue_iterate( &gArbitrationLockQueueActive,
element,
ArbitrationLockQueueElement *,
link )
{
if (element->service == this) {
found = true;
break;
}
}
assert( found );
if (element->count > 1) {
element->count--;
} else {
queue_remove( &gArbitrationLockQueueActive,
element,
ArbitrationLockQueueElement *,
link );
queue_enter( &gArbitrationLockQueueFree,
element,
ArbitrationLockQueueElement *,
link );
found = false;
queue_iterate( &gArbitrationLockQueueWaiting,
element,
ArbitrationLockQueueElement *,
link )
{
if (element->service == this) {
found = true;
break;
}
}
if (found) { queue_remove( &gArbitrationLockQueueWaiting,
element,
ArbitrationLockQueueElement *,
link );
queue_enter( &gArbitrationLockQueueActive,
element,
ArbitrationLockQueueElement *,
link );
IOLockWakeup( gArbitrationLockQueueLock,
element,
true );
}
}
IOUnlock( gArbitrationLockQueueLock );
}
uint32_t
IOService::isLockedForArbitration(IOService * service)
{
#if DEBUG_NOTIFIER_LOCKED
uint32_t count;
ArbitrationLockQueueElement * active;
IOLockLock(gArbitrationLockQueueLock);
count = 0;
queue_iterate(&gArbitrationLockQueueActive,
active,
ArbitrationLockQueueElement *,
link)
{
if ((active->thread == IOThreadSelf())
&& (!service || (active->service == service))) {
count += 0x10000;
count += active->count;
}
}
IOLockUnlock(gArbitrationLockQueueLock);
return count;
#else
return 0;
#endif
}
void
IOService::applyToProviders( IOServiceApplierFunction applier,
void * context )
{
applyToParents((IORegistryEntryApplierFunction) applier,
context, gIOServicePlane );
}
void
IOService::applyToClients( IOServiceApplierFunction applier,
void * context )
{
applyToChildren((IORegistryEntryApplierFunction) applier,
context, gIOServicePlane );
}
IOReturn
IOService::messageClient( UInt32 type, OSObject * client,
void * argument, vm_size_t argSize )
{
IOReturn ret;
IOService * service;
_IOServiceInterestNotifier * notify;
if ((service = OSDynamicCast( IOService, client))) {
ret = service->message( type, this, argument );
} else if ((notify = OSDynamicCast( _IOServiceInterestNotifier, client))) {
_IOServiceNotifierInvocation invocation;
bool willNotify;
invocation.thread = current_thread();
LOCKWRITENOTIFY();
willNotify = (0 != (kIOServiceNotifyEnable & notify->state));
if (willNotify) {
queue_enter( ¬ify->handlerInvocations, &invocation,
_IOServiceNotifierInvocation *, link );
}
UNLOCKNOTIFY();
if (willNotify) {
ret = (*notify->handler)( notify->target, notify->ref,
type, this, argument, argSize );
LOCKWRITENOTIFY();
queue_remove( ¬ify->handlerInvocations, &invocation,
_IOServiceNotifierInvocation *, link );
if (kIOServiceNotifyWaiter & notify->state) {
notify->state &= ~kIOServiceNotifyWaiter;
WAKEUPNOTIFY( notify );
}
UNLOCKNOTIFY();
} else {
ret = kIOReturnSuccess;
}
} else {
ret = kIOReturnBadArgument;
}
return ret;
}
static void
applyToInterestNotifiers(const IORegistryEntry *target,
const OSSymbol * typeOfInterest,
OSObjectApplierFunction applier,
void * context )
{
OSArray * copyArray = NULL;
OSObject * prop;
LOCKREADNOTIFY();
prop = target->copyProperty(typeOfInterest);
IOCommand *notifyList = OSDynamicCast(IOCommand, prop);
if (notifyList) {
copyArray = OSArray::withCapacity(1);
iterqueue(¬ifyList->fCommandChain, entry) {
_IOServiceInterestNotifier * notify;
queue_element(entry, notify, _IOServiceInterestNotifier *, chain);
copyArray->setObject(notify);
}
}
UNLOCKNOTIFY();
if (copyArray) {
unsigned int index;
OSObject * next;
for (index = 0; (next = copyArray->getObject( index )); index++) {
(*applier)(next, context);
}
copyArray->release();
}
OSSafeReleaseNULL(prop);
}
void
IOService::applyToInterested( const OSSymbol * typeOfInterest,
OSObjectApplierFunction applier,
void * context )
{
if (gIOGeneralInterest == typeOfInterest) {
applyToClients((IOServiceApplierFunction) applier, context );
}
applyToInterestNotifiers(this, typeOfInterest, applier, context);
}
struct MessageClientsContext {
IOService * service;
UInt32 type;
void * argument;
vm_size_t argSize;
IOReturn ret;
};
static void
messageClientsApplier( OSObject * object, void * ctx )
{
IOReturn ret;
MessageClientsContext * context = (MessageClientsContext *) ctx;
ret = context->service->messageClient( context->type,
object, context->argument, context->argSize );
if (kIOReturnSuccess != ret) {
context->ret = ret;
}
}
IOReturn
IOService::messageClients( UInt32 type,
void * argument, vm_size_t argSize )
{
MessageClientsContext context;
context.service = this;
context.type = type;
context.argument = argument;
context.argSize = argSize;
context.ret = kIOReturnSuccess;
applyToInterested( gIOGeneralInterest,
&messageClientsApplier, &context );
return context.ret;
}
IOReturn
IOService::acknowledgeNotification( IONotificationRef notification,
IOOptionBits response )
{
return kIOReturnUnsupported;
}
IONotifier *
IOService::registerInterest( const OSSymbol * typeOfInterest,
IOServiceInterestHandler handler, void * target, void * ref )
{
_IOServiceInterestNotifier * notify = NULL;
IOReturn rc = kIOReturnError;
notify = new _IOServiceInterestNotifier;
if (!notify) {
return NULL;
}
if (notify->init()) {
rc = registerInterestForNotifier(notify, typeOfInterest,
handler, target, ref);
}
if (rc != kIOReturnSuccess) {
notify->release();
notify = NULL;
}
return notify;
}
static IOReturn
IOServiceInterestHandlerToBlock( void * target __unused, void * refCon,
UInt32 messageType, IOService * provider,
void * messageArgument, vm_size_t argSize )
{
return ((IOServiceInterestHandlerBlock) refCon)(messageType, provider, messageArgument, argSize);
}
IONotifier *
IOService::registerInterest(const OSSymbol * typeOfInterest,
IOServiceInterestHandlerBlock handler)
{
IONotifier * notify;
void * block;
block = Block_copy(handler);
if (!block) {
return NULL;
}
notify = registerInterest(typeOfInterest, &IOServiceInterestHandlerToBlock, NULL, block);
if (!notify) {
Block_release(block);
}
return notify;
}
IOReturn
IOService::registerInterestForNotifier( IONotifier *svcNotify, const OSSymbol * typeOfInterest,
IOServiceInterestHandler handler, void * target, void * ref )
{
IOReturn rc = kIOReturnSuccess;
_IOServiceInterestNotifier *notify = NULL;
if (!svcNotify || !(notify = OSDynamicCast(_IOServiceInterestNotifier, svcNotify))) {
return kIOReturnBadArgument;
}
notify->handler = handler;
notify->target = target;
notify->ref = ref;
if ((typeOfInterest != gIOGeneralInterest)
&& (typeOfInterest != gIOBusyInterest)
&& (typeOfInterest != gIOAppPowerStateInterest)
&& (typeOfInterest != gIOConsoleSecurityInterest)
&& (typeOfInterest != gIOPriorityPowerStateInterest)) {
return kIOReturnBadArgument;
}
lockForArbitration();
if (0 == (__state[0] & kIOServiceInactiveState)) {
notify->state = kIOServiceNotifyEnable;
LOCKWRITENOTIFY();
IOCommand * notifyList;
OSObject * obj = copyProperty( typeOfInterest );
if (!(notifyList = OSDynamicCast(IOCommand, obj))) {
notifyList = OSTypeAlloc(IOCommand);
if (notifyList) {
notifyList->init();
bool ok = setProperty( typeOfInterest, notifyList);
notifyList->release();
if (!ok) {
notifyList = NULL;
}
}
}
if (obj) {
obj->release();
}
if (notifyList) {
enqueue(¬ifyList->fCommandChain, ¬ify->chain);
notify->retain(); }
UNLOCKNOTIFY();
} else {
rc = kIOReturnNotReady;
}
unlockForArbitration();
return rc;
}
static void
cleanInterestList( OSObject * head )
{
IOCommand *notifyHead = OSDynamicCast(IOCommand, head);
if (!notifyHead) {
return;
}
LOCKWRITENOTIFY();
while (queue_entry_t entry = dequeue(¬ifyHead->fCommandChain)) {
queue_next(entry) = queue_prev(entry) = NULL;
_IOServiceInterestNotifier * notify;
queue_element(entry, notify, _IOServiceInterestNotifier *, chain);
notify->release();
}
UNLOCKNOTIFY();
}
void
IOService::unregisterAllInterest( void )
{
OSObject * prop;
prop = copyProperty(gIOGeneralInterest);
cleanInterestList(prop);
OSSafeReleaseNULL(prop);
prop = copyProperty(gIOBusyInterest);
cleanInterestList(prop);
OSSafeReleaseNULL(prop);
prop = copyProperty(gIOAppPowerStateInterest);
cleanInterestList(prop);
OSSafeReleaseNULL(prop);
prop = copyProperty(gIOPriorityPowerStateInterest);
cleanInterestList(prop);
OSSafeReleaseNULL(prop);
prop = copyProperty(gIOConsoleSecurityInterest);
cleanInterestList(prop);
OSSafeReleaseNULL(prop);
}
void
_IOServiceInterestNotifier::wait()
{
_IOServiceNotifierInvocation * next;
bool doWait;
do {
doWait = false;
queue_iterate( &handlerInvocations, next,
_IOServiceNotifierInvocation *, link) {
if (next->thread != current_thread()) {
doWait = true;
break;
}
}
if (doWait) {
state |= kIOServiceNotifyWaiter;
SLEEPNOTIFY(this);
}
} while (doWait);
}
void
_IOServiceInterestNotifier::free()
{
assert( queue_empty( &handlerInvocations ));
if (handler == &IOServiceInterestHandlerToBlock) {
Block_release(ref);
}
OSObject::free();
}
void
_IOServiceInterestNotifier::remove()
{
LOCKWRITENOTIFY();
if (queue_next( &chain )) {
remqueue(&chain);
queue_next( &chain) = queue_prev( &chain) = NULL;
release();
}
state &= ~kIOServiceNotifyEnable;
wait();
UNLOCKNOTIFY();
release();
}
bool
_IOServiceInterestNotifier::disable()
{
bool ret;
LOCKWRITENOTIFY();
ret = (0 != (kIOServiceNotifyEnable & state));
state &= ~kIOServiceNotifyEnable;
if (ret) {
wait();
}
UNLOCKNOTIFY();
return ret;
}
void
_IOServiceInterestNotifier::enable( bool was )
{
LOCKWRITENOTIFY();
if (was) {
state |= kIOServiceNotifyEnable;
} else {
state &= ~kIOServiceNotifyEnable;
}
UNLOCKNOTIFY();
}
bool
_IOServiceInterestNotifier::init()
{
queue_init( &handlerInvocations );
return OSObject::init();
}
#define tailQ(o) setObject(o)
#define headQ(o) setObject(0, o)
#define TLOG(fmt, args...) { if(kIOLogYield & gIOKitDebug) { IOLog("[%llx] ", thread_tid(current_thread())); IOLog(fmt, ## args); }}
static void
_workLoopAction( IOWorkLoop::Action action,
IOService * service,
void * p0 = NULL, void * p1 = NULL,
void * p2 = NULL, void * p3 = NULL )
{
IOWorkLoop * wl;
if ((wl = service->getWorkLoop())) {
wl->retain();
wl->runAction( action, service, p0, p1, p2, p3 );
wl->release();
} else {
(*action)( service, p0, p1, p2, p3 );
}
}
bool
IOService::requestTerminate( IOService * provider, IOOptionBits options )
{
bool ok;
ok = isParent( provider, gIOServicePlane, true);
if (ok) {
provider->terminateClient( this, options | kIOServiceRecursing );
ok = (0 != (kIOServiceInactiveState & __state[0]));
}
return ok;
}
bool
IOService::terminatePhase1( IOOptionBits options )
{
IOService * victim;
IOService * client;
IOService * rematchProvider;
OSIterator * iter;
OSArray * makeInactive;
OSArray * waitingInactive;
IOOptionBits callerOptions;
int waitResult = THREAD_AWAKENED;
bool wait;
bool ok;
bool didInactive;
bool startPhase2 = false;
TLOG("%s[0x%qx]::terminatePhase1(%08llx)\n", getName(), getRegistryEntryID(), (long long)options);
callerOptions = options;
rematchProvider = NULL;
uint64_t regID = getRegistryEntryID();
IOServiceTrace(
IOSERVICE_TERMINATE_PHASE1,
(uintptr_t) regID,
(uintptr_t) (regID >> 32),
(uintptr_t) this,
(uintptr_t) options);
if (options & kIOServiceRecursing) {
lockForArbitration();
if (0 == (kIOServiceInactiveState & __state[0])) {
__state[0] |= kIOServiceInactiveState;
__state[1] |= kIOServiceRecursing | kIOServiceTermPhase1State;
}
unlockForArbitration();
return true;
}
makeInactive = OSArray::withCapacity( 16 );
waitingInactive = OSArray::withCapacity( 16 );
if (!makeInactive || !waitingInactive) {
return false;
}
victim = this;
victim->retain();
while (victim) {
didInactive = victim->lockForArbitration( true );
if (didInactive) {
uint64_t regID1 = victim->getRegistryEntryID();
IOServiceTrace(IOSERVICE_TERM_SET_INACTIVE,
(uintptr_t) regID1,
(uintptr_t) (regID1 >> 32),
(uintptr_t) victim->__state[1],
(uintptr_t) 0);
enum { kRP1 = kIOServiceRecursing | kIOServiceTermPhase1State };
didInactive = (kRP1 == (victim->__state[1] & kRP1))
|| (0 == (victim->__state[0] & kIOServiceInactiveState));
if (!didInactive) {
if (-1U == waitingInactive->getNextIndexOfObject(victim, 0)) {
do{
IOLockLock(gIOServiceBusyLock);
wait = (victim->__state[1] & kIOServiceTermPhase1State);
if (wait) {
TLOG("%s[0x%qx]::waitPhase1(%s[0x%qx])\n",
getName(), getRegistryEntryID(), victim->getName(), victim->getRegistryEntryID());
victim->__state[1] |= kIOServiceTerm1WaiterState;
victim->unlockForArbitration();
assert_wait((event_t)&victim->__state[1], THREAD_UNINT);
}
IOLockUnlock(gIOServiceBusyLock);
if (wait) {
waitResult = thread_block(THREAD_CONTINUE_NULL);
TLOG("%s[0x%qx]::did waitPhase1(%s[0x%qx])\n",
getName(), getRegistryEntryID(), victim->getName(), victim->getRegistryEntryID());
victim->lockForArbitration();
}
}while (wait && (waitResult != THREAD_TIMED_OUT));
}
} else {
victim->__state[0] |= kIOServiceInactiveState;
victim->__state[0] &= ~(kIOServiceRegisteredState | kIOServiceMatchedState
| kIOServiceFirstPublishState | kIOServiceFirstMatchState);
victim->__state[1] &= ~kIOServiceRecursing;
victim->__state[1] |= kIOServiceTermPhase1State;
waitingInactive->headQ(victim);
if (victim == this) {
if (kIOServiceTerminateNeedWillTerminate & options) {
victim->__state[1] |= kIOServiceNeedWillTerminate;
}
}
victim->_adjustBusy( 1 );
if ((options & kIOServiceTerminateWithRematch) && (victim == this)) {
OSObject * obj;
OSObject * rematchProps;
OSNumber * num;
uint32_t count;
rematchProvider = getProvider();
if (rematchProvider) {
obj = rematchProvider->copyProperty(gIORematchCountKey);
num = OSDynamicCast(OSNumber, obj);
count = 0;
if (num) {
count = num->unsigned32BitValue();
count++;
}
num = OSNumber::withNumber(count, 32);
rematchProvider->setProperty(gIORematchCountKey, num);
rematchProps = copyProperty(gIOMatchedPersonalityKey);
rematchProvider->setProperty(gIORematchPersonalityKey, rematchProps);
OSSafeReleaseNULL(num);
OSSafeReleaseNULL(rematchProps);
OSSafeReleaseNULL(obj);
}
}
}
victim->unlockForArbitration();
}
if (victim == this) {
options &= ~kIOServiceTerminateWithRematch;
startPhase2 = didInactive;
}
if (didInactive) {
OSArray * notifiers;
notifiers = victim->copyNotifiers(gIOTerminatedNotification, 0, 0xffffffff);
victim->invokeNotifiers(¬ifiers);
IOUserClient::destroyUserReferences( victim );
iter = victim->getClientIterator();
if (iter) {
while ((client = (IOService *) iter->getNextObject())) {
TLOG("%s[0x%qx]::requestTerminate(%s[0x%qx], %08llx)\n",
client->getName(), client->getRegistryEntryID(),
victim->getName(), victim->getRegistryEntryID(), (long long)options);
ok = client->requestTerminate( victim, options );
TLOG("%s[0x%qx]::requestTerminate(%s[0x%qx], ok = %d)\n",
client->getName(), client->getRegistryEntryID(),
victim->getName(), victim->getRegistryEntryID(), ok);
uint64_t regID1 = client->getRegistryEntryID();
uint64_t regID2 = victim->getRegistryEntryID();
IOServiceTrace(
(ok ? IOSERVICE_TERMINATE_REQUEST_OK
: IOSERVICE_TERMINATE_REQUEST_FAIL),
(uintptr_t) regID1,
(uintptr_t) (regID1 >> 32),
(uintptr_t) regID2,
(uintptr_t) (regID2 >> 32));
if (ok) {
makeInactive->setObject( client );
}
}
iter->release();
}
}
victim->release();
victim = (IOService *) makeInactive->getObject(0);
if (victim) {
victim->retain();
makeInactive->removeObject(0);
}
}
makeInactive->release();
while ((victim = (IOService *) waitingInactive->getObject(0))) {
victim->retain();
waitingInactive->removeObject(0);
victim->lockForArbitration();
victim->__state[1] &= ~kIOServiceTermPhase1State;
if (kIOServiceTerm1WaiterState & victim->__state[1]) {
victim->__state[1] &= ~kIOServiceTerm1WaiterState;
TLOG("%s[0x%qx]::wakePhase1\n", victim->getName(), victim->getRegistryEntryID());
IOLockLock( gIOServiceBusyLock );
thread_wakeup((event_t) &victim->__state[1]);
IOLockUnlock( gIOServiceBusyLock );
}
victim->unlockForArbitration();
victim->release();
}
waitingInactive->release();
if (startPhase2) {
retain();
lockForArbitration();
scheduleTerminatePhase2(options);
unlockForArbitration();
release();
}
if (rematchProvider) {
DKLOG(DKS " rematching after dext crash\n", DKN(rematchProvider));
rematchProvider->registerService();
}
return true;
}
void
IOService::setTerminateDefer(IOService * provider, bool defer)
{
lockForArbitration();
if (defer) {
__state[1] |= kIOServiceStartState;
} else {
__state[1] &= ~kIOServiceStartState;
}
unlockForArbitration();
if (provider && !defer) {
provider->lockForArbitration();
provider->scheduleTerminatePhase2();
provider->unlockForArbitration();
}
}
void
IOService::waitToBecomeTerminateThread(void)
{
IOLockAssert(gJobsLock, kIOLockAssertOwned);
bool wait;
do {
wait = (gIOTerminateThread != THREAD_NULL);
if (wait) {
IOLockSleep(gJobsLock, &gIOTerminateThread, THREAD_UNINT);
}
} while (wait);
gIOTerminateThread = current_thread();
}
void
IOService::scheduleTerminatePhase2( IOOptionBits options )
{
AbsoluteTime deadline;
uint64_t regID1;
int waitResult = THREAD_AWAKENED;
bool wait = false, haveDeadline = false;
if (!(__state[0] & kIOServiceInactiveState)) {
return;
}
regID1 = getRegistryEntryID();
IOServiceTrace(
IOSERVICE_TERM_SCHED_PHASE2,
(uintptr_t) regID1,
(uintptr_t) (regID1 >> 32),
(uintptr_t) __state[1],
(uintptr_t) options);
if (__state[1] & kIOServiceTermPhase1State) {
return;
}
retain();
unlockForArbitration();
options |= kIOServiceRequired;
IOLockLock( gJobsLock );
if ((options & kIOServiceSynchronous)
&& (current_thread() != gIOTerminateThread)) {
waitToBecomeTerminateThread();
gIOTerminatePhase2List->setObject( this );
gIOTerminateWork++;
do {
while (gIOTerminateWork) {
terminateWorker( options );
}
wait = (0 != (__state[1] & kIOServiceBusyStateMask));
if (wait) {
if (!haveDeadline) {
clock_interval_to_deadline( 15, kSecondScale, &deadline );
haveDeadline = true;
}
gIOTerminateThread = NULL;
IOLockWakeup( gJobsLock, (event_t) &gIOTerminateThread, false);
waitResult = IOLockSleepDeadline( gJobsLock, &gIOTerminateWork,
deadline, THREAD_UNINT );
if (__improbable(waitResult == THREAD_TIMED_OUT)) {
IOLog("%s[0x%qx]::terminate(kIOServiceSynchronous): THREAD_TIMED_OUT. "
"Attempting to auto-resolve your deadlock. PLEASE FIX!\n", getName(), getRegistryEntryID());
}
waitToBecomeTerminateThread();
}
} while (gIOTerminateWork || (wait && (waitResult != THREAD_TIMED_OUT)));
gIOTerminateThread = NULL;
IOLockWakeup( gJobsLock, (event_t) &gIOTerminateThread, false);
} else {
gIOTerminatePhase2List->setObject( this );
if (0 == gIOTerminateWork++) {
assert(gIOTerminateWorkerThread);
IOLockWakeup(gJobsLock, (event_t)&gIOTerminateWork, false );
}
}
IOLockUnlock( gJobsLock );
lockForArbitration();
release();
}
__attribute__((__noreturn__))
void
IOService::terminateThread( void * arg, wait_result_t waitResult )
{
IOLockLock(gJobsLock);
while (true) {
if (gIOTerminateThread != gIOTerminateWorkerThread) {
waitToBecomeTerminateThread();
}
while (gIOTerminateWork) {
terminateWorker((uintptr_t)arg );
}
gIOTerminateThread = NULL;
IOLockWakeup( gJobsLock, (event_t) &gIOTerminateThread, false);
IOLockSleep(gJobsLock, &gIOTerminateWork, THREAD_UNINT);
}
}
void
IOService::scheduleStop( IOService * provider )
{
uint64_t regID1 = getRegistryEntryID();
uint64_t regID2 = provider->getRegistryEntryID();
TLOG("%s[0x%qx]::scheduleStop(%s[0x%qx])\n", getName(), regID1, provider->getName(), regID2);
IOServiceTrace(
IOSERVICE_TERMINATE_SCHEDULE_STOP,
(uintptr_t) regID1,
(uintptr_t) (regID1 >> 32),
(uintptr_t) regID2,
(uintptr_t) (regID2 >> 32));
IOLockLock( gJobsLock );
gIOStopList->tailQ( this );
gIOStopProviderList->tailQ( provider );
if (0 == gIOTerminateWork++) {
assert(gIOTerminateWorkerThread);
IOLockWakeup(gJobsLock, (event_t)&gIOTerminateWork, false );
}
IOLockUnlock( gJobsLock );
}
void
IOService::scheduleFinalize(bool now)
{
uint64_t regID1 = getRegistryEntryID();
TLOG("%s[0x%qx]::scheduleFinalize\n", getName(), regID1);
IOServiceTrace(
IOSERVICE_TERMINATE_SCHEDULE_FINALIZE,
(uintptr_t) regID1,
(uintptr_t) (regID1 >> 32),
0, 0);
if (now || IOUserClient::finalizeUserReferences(this)) {
IOLockLock( gJobsLock );
gIOFinalizeList->tailQ(this);
if (0 == gIOTerminateWork++) {
assert(gIOTerminateWorkerThread);
IOLockWakeup(gJobsLock, (event_t)&gIOTerminateWork, false );
}
IOLockUnlock( gJobsLock );
}
}
bool
IOService::willTerminate( IOService * provider, IOOptionBits options )
{
if (reserved->uvars) {
IOUserServer::serviceWillTerminate(this, provider, options);
}
return true;
}
bool
IOService::didTerminate( IOService * provider, IOOptionBits options, bool * defer )
{
if (reserved->uvars) {
IOUserServer::serviceDidTerminate(this, provider, options, defer);
}
if (false == *defer) {
if (lockForArbitration( true )) {
if (false == provider->handleIsOpen( this )) {
scheduleStop( provider );
}
else {
message( kIOMessageServiceIsRequestingClose, provider, (void *)(uintptr_t) options );
if (false == provider->handleIsOpen( this )) {
scheduleStop( provider );
}
}
unlockForArbitration();
}
}
return true;
}
void
IOService::actionWillTerminate( IOService * victim, IOOptionBits options,
OSArray * doPhase2List,
bool user,
void *unused3 __unused)
{
OSIterator * iter;
IOService * client;
bool ok;
uint64_t regID1, regID2 = victim->getRegistryEntryID();
iter = victim->getClientIterator();
if (iter) {
while ((client = (IOService *) iter->getNextObject())) {
if (user != (NULL != client->reserved->uvars)) {
continue;
}
regID1 = client->getRegistryEntryID();
TLOG("%s[0x%qx]::willTerminate(%s[0x%qx], %08llx)\n",
client->getName(), regID1,
victim->getName(), regID2, (long long)options);
IOServiceTrace(
IOSERVICE_TERMINATE_WILL,
(uintptr_t) regID1,
(uintptr_t) (regID1 >> 32),
(uintptr_t) regID2,
(uintptr_t) (regID2 >> 32));
ok = client->willTerminate( victim, options );
doPhase2List->tailQ( client );
}
iter->release();
}
}
void
IOService::actionDidTerminate( IOService * victim, IOOptionBits options,
void *unused1 __unused, void *unused2 __unused,
void *unused3 __unused )
{
OSIterator * iter;
IOService * client;
bool defer;
uint64_t regID1, regID2 = victim->getRegistryEntryID();
victim->messageClients( kIOMessageServiceIsTerminated, (void *)(uintptr_t) options );
iter = victim->getClientIterator();
if (iter) {
while ((client = (IOService *) iter->getNextObject())) {
regID1 = client->getRegistryEntryID();
TLOG("%s[0x%qx]::didTerminate(%s[0x%qx], %08llx)\n",
client->getName(), regID1,
victim->getName(), regID2, (long long)options);
defer = false;
client->didTerminate( victim, options, &defer );
IOServiceTrace(
(defer ? IOSERVICE_TERMINATE_DID_DEFER
: IOSERVICE_TERMINATE_DID),
(uintptr_t) regID1,
(uintptr_t) (regID1 >> 32),
(uintptr_t) regID2,
(uintptr_t) (regID2 >> 32));
TLOG("%s[0x%qx]::didTerminate(%s[0x%qx], defer %d)\n",
client->getName(), regID1,
victim->getName(), regID2, defer);
}
iter->release();
}
}
void
IOService::actionWillStop( IOService * victim, IOOptionBits options,
void *unused1 __unused, void *unused2 __unused,
void *unused3 __unused )
{
OSIterator * iter;
IOService * provider;
bool ok;
uint64_t regID1, regID2 = victim->getRegistryEntryID();
iter = victim->getProviderIterator();
if (iter) {
while ((provider = (IOService *) iter->getNextObject())) {
regID1 = provider->getRegistryEntryID();
TLOG("%s[0x%qx]::willTerminate(%s[0x%qx], %08llx)\n",
victim->getName(), regID2,
provider->getName(), regID1, (long long)options);
IOServiceTrace(
IOSERVICE_TERMINATE_WILL,
(uintptr_t) regID2,
(uintptr_t) (regID2 >> 32),
(uintptr_t) regID1,
(uintptr_t) (regID1 >> 32));
ok = victim->willTerminate( provider, options );
}
iter->release();
}
}
void
IOService::actionDidStop( IOService * victim, IOOptionBits options,
void *unused1 __unused, void *unused2 __unused,
void *unused3 __unused )
{
OSIterator * iter;
IOService * provider;
bool defer = false;
uint64_t regID1, regID2 = victim->getRegistryEntryID();
iter = victim->getProviderIterator();
if (iter) {
while ((provider = (IOService *) iter->getNextObject())) {
regID1 = provider->getRegistryEntryID();
TLOG("%s[0x%qx]::didTerminate(%s[0x%qx], %08llx)\n",
victim->getName(), regID2,
provider->getName(), regID1, (long long)options);
victim->didTerminate( provider, options, &defer );
IOServiceTrace(
(defer ? IOSERVICE_TERMINATE_DID_DEFER
: IOSERVICE_TERMINATE_DID),
(uintptr_t) regID2,
(uintptr_t) (regID2 >> 32),
(uintptr_t) regID1,
(uintptr_t) (regID1 >> 32));
TLOG("%s[0x%qx]::didTerminate(%s[0x%qx], defer %d)\n",
victim->getName(), regID2,
provider->getName(), regID1, defer);
}
iter->release();
}
}
void
IOService::actionFinalize( IOService * victim, IOOptionBits options,
void *unused1 __unused, void *unused2 __unused,
void *unused3 __unused )
{
uint64_t regID1 = victim->getRegistryEntryID();
TLOG("%s[0x%qx]::finalize(%08llx)\n", victim->getName(), regID1, (long long)options);
IOServiceTrace(
IOSERVICE_TERMINATE_FINALIZE,
(uintptr_t) regID1,
(uintptr_t) (regID1 >> 32),
0, 0);
victim->finalize( options );
}
void
IOService::actionStop( IOService * provider, IOService * client,
void *unused1 __unused, void *unused2 __unused,
void *unused3 __unused )
{
uint64_t regID1 = provider->getRegistryEntryID();
uint64_t regID2 = client->getRegistryEntryID();
TLOG("%s[0x%qx]::stop(%s[0x%qx])\n", client->getName(), regID2, provider->getName(), regID1);
IOServiceTrace(
IOSERVICE_TERMINATE_STOP,
(uintptr_t) regID1,
(uintptr_t) (regID1 >> 32),
(uintptr_t) regID2,
(uintptr_t) (regID2 >> 32));
client->stop( provider );
if (provider->isOpen( client )) {
provider->close( client );
}
TLOG("%s[0x%qx]::detach(%s[0x%qx])\n", client->getName(), regID2, provider->getName(), regID1);
client->detach( provider );
}
void
IOService::terminateWorker( IOOptionBits options )
{
OSArray * doPhase2List;
OSArray * didPhase2List;
OSSet * freeList;
OSIterator * iter;
UInt32 workDone;
IOService * victim;
IOService * client;
IOService * provider;
unsigned int idx;
bool moreToDo;
bool doPhase2;
bool doPhase3;
options |= kIOServiceRequired;
doPhase2List = OSArray::withCapacity( 16 );
didPhase2List = OSArray::withCapacity( 16 );
freeList = OSSet::withCapacity( 16 );
if ((NULL == doPhase2List) || (NULL == didPhase2List) || (NULL == freeList)) {
return;
}
do {
workDone = gIOTerminateWork;
while ((victim = (IOService *) gIOTerminatePhase2List->getObject(0))) {
victim->retain();
gIOTerminatePhase2List->removeObject(0);
IOLockUnlock( gJobsLock );
uint64_t regID1 = victim->getRegistryEntryID();
IOServiceTrace(
IOSERVICE_TERM_START_PHASE2,
(uintptr_t) regID1,
(uintptr_t) (regID1 >> 32),
(uintptr_t) 0,
(uintptr_t) 0);
while (victim) {
doPhase2 = victim->lockForArbitration( true );
if (doPhase2) {
doPhase2 = (0 != (kIOServiceInactiveState & victim->__state[0]));
if (doPhase2) {
uint64_t regID1 = victim->getRegistryEntryID();
IOServiceTrace(
IOSERVICE_TERM_TRY_PHASE2,
(uintptr_t) regID1,
(uintptr_t) (regID1 >> 32),
(uintptr_t) victim->__state[1],
(uintptr_t) 0);
doPhase2 = (0 == (victim->__state[1] &
(kIOServiceTermPhase1State
| kIOServiceTermPhase2State
| kIOServiceConfigState)));
if (doPhase2 && (iter = victim->getClientIterator())) {
while (doPhase2 && (client = (IOService *) iter->getNextObject())) {
doPhase2 = (0 == (client->__state[1] & kIOServiceStartState));
if (!doPhase2) {
uint64_t regID1 = client->getRegistryEntryID();
IOServiceTrace(
IOSERVICE_TERM_UC_DEFER,
(uintptr_t) regID1,
(uintptr_t) (regID1 >> 32),
(uintptr_t) client->__state[1],
(uintptr_t) 0);
TLOG("%s[0x%qx]::defer phase2(%s[0x%qx])\n",
victim->getName(), victim->getRegistryEntryID(),
client->getName(), client->getRegistryEntryID());
}
}
iter->release();
}
if (doPhase2) {
victim->__state[1] |= kIOServiceTermPhase2State;
}
}
victim->unlockForArbitration();
}
if (doPhase2) {
if (kIOServiceNeedWillTerminate & victim->__state[1]) {
if (NULL == victim->reserved->uvars) {
_workLoopAction((IOWorkLoop::Action) &actionWillStop,
victim, (void *)(uintptr_t) options);
} else {
actionWillStop(victim, options, NULL, NULL, NULL);
}
}
OSArray * notifiers;
notifiers = victim->copyNotifiers(gIOWillTerminateNotification, 0, 0xffffffff);
victim->invokeNotifiers(¬ifiers);
_workLoopAction((IOWorkLoop::Action) &actionWillTerminate,
victim,
(void *)(uintptr_t) options,
(void *)(uintptr_t) doPhase2List,
(void *)(uintptr_t) false);
actionWillTerminate(
victim, options, doPhase2List, true, NULL);
didPhase2List->headQ( victim );
}
victim->release();
victim = (IOService *) doPhase2List->getObject(0);
if (victim) {
victim->retain();
doPhase2List->removeObject(0);
}
}
while ((victim = (IOService *) didPhase2List->getObject(0))) {
bool scheduleFinalize = false;
if (victim->lockForArbitration( true )) {
victim->__state[1] |= kIOServiceTermPhase3State;
scheduleFinalize = (NULL == victim->getClient());
victim->unlockForArbitration();
}
_workLoopAction((IOWorkLoop::Action) &actionDidTerminate,
victim, (void *)(uintptr_t) options );
if (kIOServiceNeedWillTerminate & victim->__state[1]) {
_workLoopAction((IOWorkLoop::Action) &actionDidStop,
victim, (void *)(uintptr_t) options, NULL );
}
if (scheduleFinalize) {
victim->scheduleFinalize(false);
}
didPhase2List->removeObject(0);
}
IOLockLock( gJobsLock );
}
do {
doPhase3 = false;
while ((victim = (IOService *) gIOFinalizeList->getObject(0))) {
bool sendFinal = false;
IOLockUnlock( gJobsLock );
if (victim->lockForArbitration(true)) {
sendFinal = (0 == (victim->__state[1] & kIOServiceFinalized));
if (sendFinal) {
victim->__state[1] |= kIOServiceFinalized;
}
victim->unlockForArbitration();
}
if (sendFinal) {
_workLoopAction((IOWorkLoop::Action) &actionFinalize,
victim, (void *)(uintptr_t) options );
}
IOLockLock( gJobsLock );
freeList->setObject( victim );
gIOFinalizeList->removeObject(0);
}
for (idx = 0;
(!doPhase3) && (client = (IOService *) gIOStopList->getObject(idx));) {
provider = (IOService *) gIOStopProviderList->getObject(idx);
assert( provider );
uint64_t regID1 = provider->getRegistryEntryID();
uint64_t regID2 = client->getRegistryEntryID();
if (!provider->isChild( client, gIOServicePlane )) {
TLOG("%s[0x%qx]::nop stop(%s[0x%qx])\n", client->getName(), regID2, provider->getName(), regID1);
IOServiceTrace(
IOSERVICE_TERMINATE_STOP_NOP,
(uintptr_t) regID1,
(uintptr_t) (regID1 >> 32),
(uintptr_t) regID2,
(uintptr_t) (regID2 >> 32));
} else {
bool deferStop = (0 != (kIOServiceInactiveState & client->__state[0]));
IOLockUnlock( gJobsLock );
if (deferStop && client->lockForArbitration(true)) {
deferStop = (0 == (client->__state[1] & kIOServiceFinalized));
client->unlockForArbitration();
if (deferStop) {
TLOG("%s[0x%qx]::defer stop()\n", client->getName(), regID2);
IOServiceTrace(IOSERVICE_TERMINATE_STOP_DEFER,
(uintptr_t) regID1,
(uintptr_t) (regID1 >> 32),
(uintptr_t) regID2,
(uintptr_t) (regID2 >> 32));
idx++;
IOLockLock( gJobsLock );
continue;
}
}
_workLoopAction((IOWorkLoop::Action) &actionStop,
provider, (void *) client );
IOLockLock( gJobsLock );
doPhase3 = true;
}
freeList->setObject( client );
freeList->setObject( provider );
gIOStopList->removeObject( idx );
gIOStopProviderList->removeObject( idx );
idx = 0;
}
} while (doPhase3);
gIOTerminateWork -= workDone;
moreToDo = (gIOTerminateWork != 0);
if (!moreToDo) {
TLOG("iokit terminate done, %d stops remain\n", gIOStopList->getCount());
IOServiceTrace(
IOSERVICE_TERMINATE_DONE,
(uintptr_t) gIOStopList->getCount(), 0, 0, 0);
}
} while (moreToDo);
IOLockUnlock( gJobsLock );
freeList->release();
doPhase2List->release();
didPhase2List->release();
IOLockLock( gJobsLock );
}
bool
IOService::finalize( IOOptionBits options )
{
OSIterator * iter;
IOService * provider;
uint64_t regID1, regID2 = getRegistryEntryID();
iter = getProviderIterator();
assert( iter );
if (iter) {
while ((provider = (IOService *) iter->getNextObject())) {
if (0 == (__state[1] & kIOServiceTermPhase3State)) {
regID1 = provider->getRegistryEntryID();
TLOG("%s[0x%qx]::stop1(%s[0x%qx])\n", getName(), regID2, provider->getName(), regID1);
IOServiceTrace(
IOSERVICE_TERMINATE_STOP,
(uintptr_t) regID1,
(uintptr_t) (regID1 >> 32),
(uintptr_t) regID2,
(uintptr_t) (regID2 >> 32));
stop( provider );
if (provider->isOpen( this )) {
provider->close( this );
}
detach( provider );
} else {
if (provider->lockForArbitration( true )) {
if (0 == (provider->__state[1] & kIOServiceTermPhase3State)) {
scheduleStop( provider );
}
provider->unlockForArbitration();
}
}
}
iter->release();
}
return true;
}
#undef tailQ
#undef headQ
void
IOService::doServiceTerminate( IOOptionBits options )
{
}
bool
IOService::terminateClient( IOService * client, IOOptionBits options )
{
bool ok;
if (client->isParent( this, gIOServicePlane, true)) {
ok = client->terminate( options );
} else {
ok = true;
}
return ok;
}
bool
IOService::terminate( IOOptionBits options )
{
options |= kIOServiceTerminate;
return terminatePhase1( options );
}
struct ServiceOpenMessageContext {
IOService * service;
UInt32 type;
IOService * excludeClient;
IOOptionBits options;
};
static void
serviceOpenMessageApplier( OSObject * object, void * ctx )
{
ServiceOpenMessageContext * context = (ServiceOpenMessageContext *) ctx;
if (object != context->excludeClient) {
context->service->messageClient( context->type, object, (void *)(uintptr_t) context->options );
}
}
bool
IOService::open( IOService * forClient,
IOOptionBits options,
void * arg )
{
bool ok;
ServiceOpenMessageContext context;
context.service = this;
context.type = kIOMessageServiceIsAttemptingOpen;
context.excludeClient = forClient;
context.options = options;
applyToInterested( gIOGeneralInterest,
&serviceOpenMessageApplier, &context );
if (false == lockForArbitration(false)) {
return false;
}
ok = (0 == (__state[0] & kIOServiceInactiveState));
if (ok) {
ok = handleOpen( forClient, options, arg );
}
if (ok && forClient && forClient->reserved->uvars && forClient->reserved->uvars->userServer) {
forClient->reserved->uvars->userServer->serviceOpen(this, forClient);
}
unlockForArbitration();
return ok;
}
void
IOService::close( IOService * forClient,
IOOptionBits options )
{
bool wasClosed;
bool last = false;
lockForArbitration();
wasClosed = handleIsOpen( forClient );
if (wasClosed) {
handleClose( forClient, options );
last = (__state[1] & kIOServiceTermPhase3State);
if (forClient && forClient->reserved->uvars && forClient->reserved->uvars->userServer) {
forClient->reserved->uvars->userServer->serviceClose(this, forClient);
}
}
unlockForArbitration();
if (last) {
forClient->scheduleStop( this );
} else if (wasClosed) {
ServiceOpenMessageContext context;
context.service = this;
context.type = kIOMessageServiceWasClosed;
context.excludeClient = forClient;
context.options = options;
applyToInterested( gIOGeneralInterest,
&serviceOpenMessageApplier, &context );
}
}
bool
IOService::isOpen( const IOService * forClient ) const
{
IOService * self = (IOService *) this;
bool ok;
self->lockForArbitration();
ok = handleIsOpen( forClient );
self->unlockForArbitration();
return ok;
}
bool
IOService::handleOpen( IOService * forClient,
IOOptionBits options,
void * arg )
{
bool ok;
ok = (NULL == __owner);
if (ok) {
__owner = forClient;
} else if (options & kIOServiceSeize) {
ok = (kIOReturnSuccess == messageClient( kIOMessageServiceIsRequestingClose,
__owner, (void *)(uintptr_t) options ));
if (ok && (NULL == __owner)) {
__owner = forClient;
} else {
ok = false;
}
}
return ok;
}
void
IOService::handleClose( IOService * forClient,
IOOptionBits options )
{
if (__owner == forClient) {
__owner = NULL;
}
}
bool
IOService::handleIsOpen( const IOService * forClient ) const
{
if (forClient) {
return __owner == forClient;
} else {
return __owner != forClient;
}
}
static SInt32
IONotifyOrdering( const OSMetaClassBase * inObj1, const OSMetaClassBase * inObj2, void * ref )
{
const _IOServiceNotifier * obj1 = (const _IOServiceNotifier *) inObj1;
const _IOServiceNotifier * obj2 = (const _IOServiceNotifier *) inObj2;
SInt32 val1;
SInt32 val2;
val1 = 0;
val2 = 0;
if (obj1) {
val1 = obj1->priority;
}
if (obj2) {
val2 = obj2->priority;
}
return val1 - val2;
}
static SInt32
IOServiceObjectOrder( const OSObject * entry, void * ref)
{
OSDictionary * dict;
IOService * service;
_IOServiceNotifier * notify;
OSSymbol * key = (OSSymbol *) ref;
OSNumber * offset;
OSObject * prop;
SInt32 result;
prop = NULL;
result = kIODefaultProbeScore;
if ((dict = OSDynamicCast( OSDictionary, entry))) {
offset = OSDynamicCast(OSNumber, dict->getObject( key ));
} else if ((notify = OSDynamicCast( _IOServiceNotifier, entry))) {
return notify->priority;
} else if ((service = OSDynamicCast( IOService, entry))) {
prop = service->copyProperty(key);
offset = OSDynamicCast(OSNumber, prop);
} else {
assert( false );
offset = NULL;
}
if (offset) {
result = offset->unsigned32BitValue();
}
OSSafeReleaseNULL(prop);
return result;
}
SInt32
IOServiceOrdering( const OSMetaClassBase * inObj1, const OSMetaClassBase * inObj2, void * ref )
{
const OSObject * obj1 = (const OSObject *) inObj1;
const OSObject * obj2 = (const OSObject *) inObj2;
SInt32 val1;
SInt32 val2;
val1 = 0;
val2 = 0;
if (obj1) {
val1 = IOServiceObjectOrder( obj1, ref );
}
if (obj2) {
val2 = IOServiceObjectOrder( obj2, ref );
}
return val1 - val2;
}
IOService *
IOService::copyClientWithCategory( const OSSymbol * category )
{
IOService * service = NULL;
OSIterator * iter;
const OSSymbol * nextCat;
iter = getClientIterator();
if (iter) {
while ((service = (IOService *) iter->getNextObject())) {
if (kIOServiceInactiveState & service->__state[0]) {
continue;
}
nextCat = (const OSSymbol *) OSDynamicCast( OSSymbol,
service->getProperty( gIOMatchCategoryKey ));
if (category == nextCat) {
service->retain();
break;
}
}
iter->release();
}
return service;
}
IOService *
IOService::getClientWithCategory( const OSSymbol * category )
{
IOService *
service = copyClientWithCategory(category);
if (service) {
service->release();
}
return service;
}
bool
IOService::invokeNotifier( _IOServiceNotifier * notify )
{
_IOServiceNotifierInvocation invocation;
bool willNotify;
bool ret = true;
invocation.thread = current_thread();
#if DEBUG_NOTIFIER_LOCKED
uint32_t count;
if ((count = isLockedForArbitration(0))) {
IOLog("[%s, 0x%x]\n", notify->type->getCStringNoCopy(), count);
panic("[%s, 0x%x]\n", notify->type->getCStringNoCopy(), count);
}
#endif
LOCKWRITENOTIFY();
willNotify = (0 != (kIOServiceNotifyEnable & notify->state));
if (willNotify) {
queue_enter( ¬ify->handlerInvocations, &invocation,
_IOServiceNotifierInvocation *, link );
}
UNLOCKNOTIFY();
if (willNotify) {
ret = (*notify->handler)(notify->target, notify->ref, this, notify);
LOCKWRITENOTIFY();
queue_remove( ¬ify->handlerInvocations, &invocation,
_IOServiceNotifierInvocation *, link );
if (kIOServiceNotifyWaiter & notify->state) {
notify->state &= ~kIOServiceNotifyWaiter;
WAKEUPNOTIFY( notify );
}
UNLOCKNOTIFY();
}
return ret;
}
bool
IOService::invokeNotifiers(OSArray * willSend[])
{
OSArray * array;
_IOServiceNotifier * notify;
bool ret = true;
array = *willSend;
if (!array) {
return true;
}
*willSend = NULL;
for (unsigned int idx = 0;
(notify = (_IOServiceNotifier *) array->getObject(idx));
idx++) {
ret &= invokeNotifier(notify);
}
array->release();
return ret;
}
void
IOService::probeCandidates( OSOrderedSet * matches )
{
OSDictionary * match = NULL;
OSSymbol * symbol;
IOService * inst;
IOService * newInst;
OSDictionary * props;
SInt32 score;
OSNumber * newPri;
OSOrderedSet * familyMatches = NULL;
OSOrderedSet * startList;
OSSet * kexts = NULL;
OSObject * kextRef;
OSDictionary * startDict = NULL;
const OSSymbol * category;
OSIterator * iter;
_IOServiceNotifier * notify;
OSObject * nextMatch = NULL;
bool started;
bool needReloc = false;
bool matchDeferred = false;
#if IOMATCHDEBUG
SInt64 debugFlags;
#endif
IOService * client = NULL;
OSObject * prop1;
OSObject * prop2;
OSDictionary * rematchPersonality;
OSNumber * num;
uint32_t count;
uint32_t dextCount;
bool isDext;
bool categoryConsumed;
prop2 = NULL;
count = 0;
prop1 = copyProperty(gIORematchPersonalityKey);
rematchPersonality = OSDynamicCast(OSDictionary, prop1);
if (rematchPersonality) {
prop2 = copyProperty(gIORematchCountKey);
num = OSDynamicCast(OSNumber, prop2);
if (num) {
count = num->unsigned32BitValue();
}
OSSafeReleaseNULL(prop2);
}
dextCount = 0;
assert( matches );
while (!needReloc
&& (nextMatch = matches->getFirstObject())) {
nextMatch->retain();
matches->removeObject(nextMatch);
if ((notify = OSDynamicCast( _IOServiceNotifier, nextMatch ))) {
if (0 == (__state[0] & kIOServiceInactiveState)) {
invokeNotifier( notify );
}
nextMatch->release();
nextMatch = NULL;
continue;
} else if (!(match = OSDynamicCast( OSDictionary, nextMatch ))) {
nextMatch->release();
nextMatch = NULL;
continue;
}
props = NULL;
#if IOMATCHDEBUG
debugFlags = getDebugFlags( match );
#endif
do {
isDext = (NULL != match->getObject(gIOUserServerNameKey));
if (isDext && !(kIODKEnable & gIODKDebug)) {
continue;
}
category = OSDynamicCast( OSSymbol,
match->getObject( gIOMatchCategoryKey ));
if (NULL == category) {
category = gIODefaultMatchCategoryKey;
}
client = copyClientWithCategory(category);
categoryConsumed = (client != NULL);
if (categoryConsumed) {
#if IOMATCHDEBUG
if ((debugFlags & kIOLogMatch) && (this != gIOResources)) {
LOG("%s: match category %s exists\n", getName(),
category->getCStringNoCopy());
}
#endif
OSSafeReleaseNULL(client);
if (!isDext) {
break;
}
}
props = OSDictionary::withDictionary(match, match->getCount());
if (NULL == props) {
break;
}
props->setCapacityIncrement(1);
if (false == matchPassive(props, kIOServiceChangesOK | kIOServiceClassDone)) {
break;
}
if (isDext) {
dextCount++;
if (categoryConsumed) {
break;
}
}
if (rematchPersonality) {
bool personalityMatch = match->isEqualTo(rematchPersonality);
if (count > gIODextRelaunchMax) {
personalityMatch = !personalityMatch;
}
if (!personalityMatch) {
break;
}
}
needReloc = (false == gIOCatalogue->isModuleLoaded( match, &kextRef ));
if (needReloc) {
#if IOMATCHDEBUG
if (debugFlags & kIOLogCatalogue) {
LOG("%s: stalling for module\n", getName());
}
#endif
break;
}
if (kextRef) {
if (NULL == kexts) {
kexts = OSSet::withCapacity(1);
}
if (kexts) {
kexts->setObject(kextRef);
kextRef->release();
}
}
if (isDext) {
props->setObject(gIOMatchedPersonalityKey, match);
}
if (NULL == familyMatches) {
familyMatches = OSOrderedSet::withCapacity( 1,
IOServiceOrdering, (void *) gIOProbeScoreKey );
}
if (familyMatches) {
familyMatches->setObject( props );
}
} while (false);
OSSafeReleaseNULL(nextMatch);
OSSafeReleaseNULL(props);
}
matches->release();
matches = NULL;
if (familyMatches) {
while (!needReloc
&& (props = (OSDictionary *) familyMatches->getFirstObject())) {
props->retain();
familyMatches->removeObject( props );
inst = NULL;
newInst = NULL;
#if IOMATCHDEBUG
debugFlags = getDebugFlags( props );
#endif
do {
symbol = OSDynamicCast( OSSymbol,
props->getObject( gIOClassKey));
if (!symbol) {
continue;
}
inst = (IOService *) OSMetaClass::allocClassWithName( symbol);
if (!inst || !OSDynamicCast(IOService, inst)) {
IOLog("Couldn't alloc class \"%s\"\n",
symbol->getCStringNoCopy());
continue;
}
if (!(inst->init( props ))) {
#if IOMATCHDEBUG
if (debugFlags & kIOLogStart) {
IOLog("%s::init fails\n", symbol->getCStringNoCopy());
}
#endif
continue;
}
if (__state[1] & kIOServiceSynchronousState) {
inst->__state[1] |= kIOServiceSynchronousState;
}
category = OSDynamicCast( OSSymbol,
props->getObject( gIOMatchCategoryKey ));
if (NULL == category) {
category = gIODefaultMatchCategoryKey;
}
inst->setProperty( gIOMatchCategoryKey, (OSObject *) category );
if (!(inst->attach( this ))) {
continue;
}
score = familyMatches->orderObject( props );
#if IOMATCHDEBUG
if (debugFlags & kIOLogProbe) {
LOG("%s::probe(%s)\n",
inst->getMetaClass()->getClassName(), getName());
}
#endif
newInst = inst->probe( this, &score );
inst->detach( this );
if (NULL == newInst) {
#if IOMATCHDEBUG
if (debugFlags & kIOLogProbe) {
IOLog("%s::probe fails\n", symbol->getCStringNoCopy());
}
#endif
continue;
}
newPri = OSNumber::withNumber( score, 32 );
if (newPri) {
newInst->setProperty( gIOProbeScoreKey, newPri );
newPri->release();
}
if (NULL == startDict) {
startDict = OSDictionary::withCapacity( 1 );
}
assert( startDict );
startList = (OSOrderedSet *)
startDict->getObject( category );
if (NULL == startList) {
startList = OSOrderedSet::withCapacity( 1,
IOServiceOrdering, (void *) gIOProbeScoreKey );
if (startDict && startList) {
startDict->setObject( category, startList );
startList->release();
}
}
assert( startList );
if (startList) {
startList->setObject( newInst );
}
} while (false);
props->release();
if (inst) {
inst->release();
}
}
familyMatches->release();
familyMatches = NULL;
}
iter = OSCollectionIterator::withCollection( startDict );
if (iter) {
while ((category = (const OSSymbol *) iter->getNextObject())) {
startList = (OSOrderedSet *) startDict->getObject( category );
assert( startList );
if (!startList) {
continue;
}
started = false;
while (true && !matchDeferred
&& (inst = (IOService *)startList->getFirstObject())) {
inst->retain();
startList->removeObject(inst);
#if IOMATCHDEBUG
debugFlags = getDebugFlags( inst );
if (debugFlags & kIOLogStart) {
if (started) {
LOG( "match category exists, skipping " );
}
LOG( "%s::start(%s) <%d>\n", inst->getName(),
getName(), inst->getRetainCount());
}
#endif
if (false == started) {
#if !NO_KEXTD
IOLockLock(gJobsLock);
matchDeferred = (gIOMatchDeferList
&& (kOSBooleanTrue == inst->getProperty(gIOMatchDeferKey)));
if (matchDeferred && (-1U == gIOMatchDeferList->getNextIndexOfObject(this, 0))) {
gIOMatchDeferList->setObject(this);
}
IOLockUnlock(gJobsLock);
if (matchDeferred) {
symbol = OSDynamicCast(OSSymbol, inst->getProperty(gIOClassKey));
IOLog("%s(0x%qx): matching deferred by %s\n",
getName(), getRegistryEntryID(),
symbol ? symbol->getCStringNoCopy() : "");
}
#endif
if (!matchDeferred) {
started = startCandidate( inst );
#if IOMATCHDEBUG
if ((debugFlags & kIOLogStart) && (false == started)) {
LOG( "%s::start(%s) <%d> failed\n", inst->getName(), getName(),
inst->getRetainCount());
}
#endif
}
}
inst->release();
}
}
iter->release();
}
OSSafeReleaseNULL(prop1);
if (dextCount) {
num = OSNumber::withNumber(dextCount, 32);
setProperty(gIODEXTMatchCountKey, num);
OSSafeReleaseNULL(num);
} else if (rematchPersonality) {
removeProperty(gIODEXTMatchCountKey);
}
if (kexts) {
OSKext::dropMatchingReferences(kexts);
OSSafeReleaseNULL(kexts);
}
lockForArbitration();
SInt32 adjBusy = 0;
uint64_t regID = getRegistryEntryID();
if (needReloc) {
adjBusy = (__state[1] & kIOServiceModuleStallState) ? 0 : 1;
if (adjBusy) {
IOServiceTrace(
IOSERVICE_MODULESTALL,
(uintptr_t) regID,
(uintptr_t) (regID >> 32),
(uintptr_t) this,
0);
__state[1] |= kIOServiceModuleStallState;
}
} else if (__state[1] & kIOServiceModuleStallState) {
IOServiceTrace(
IOSERVICE_MODULEUNSTALL,
(uintptr_t) regID,
(uintptr_t) (regID >> 32),
(uintptr_t) this,
0);
__state[1] &= ~kIOServiceModuleStallState;
adjBusy = -1;
}
if (adjBusy) {
_adjustBusy( adjBusy );
}
unlockForArbitration();
if (startDict) {
startDict->release();
}
}
static
__attribute__((noinline, not_tail_called))
IOService *
__WAITING_FOR_USER_SERVER__(OSDictionary * matching)
{
IOService * server;
server = IOService::waitForMatchingService(matching, kIOUserServerCheckInTimeoutSecs * NSEC_PER_SEC);
return server;
}
void
IOService::willShutdown()
{
gKextdWillTerminate = true;
#if !NO_KEXTD
getPlatform()->waitQuiet(30 * NSEC_PER_SEC);
#endif
OSKext::willShutdown();
}
void
IOServicePH::init(IOPMrootDomain * root)
{
fUserServers = OSArray::withCapacity(4);
fMatchingWork = OSArray::withCapacity(4);
assert(fUserServers && fMatchingWork);
fRootNotifier = root->registerInterest(
gIOPriorityPowerStateInterest, &IOServicePH::systemPowerChange, NULL, NULL);
assert(fRootNotifier);
}
void
IOServicePH::lock()
{
IOLockLock(gJobsLock);
}
void
IOServicePH::unlock()
{
IOLockUnlock(gJobsLock);
}
void
IOServicePH::serverAdd(IOUserServer * server)
{
uint32_t idx;
lock();
idx = fUserServers->getNextIndexOfObject(server, 0);
if (idx == -1U) {
fUserServers->setObject(server);
}
unlock();
}
void
IOServicePH::serverRemove(IOUserServer * server)
{
uint32_t idx;
lock();
idx = fUserServers->getNextIndexOfObject(server, 0);
if (idx != -1U) {
fUserServers->removeObject(idx);
}
unlock();
}
void
IOServicePH::serverAck(IOUserServer * server)
{
uint32_t idx;
IOService * ackTo;
uint32_t ackToRef;
ackTo = NULL;
lock();
if (server && fUserServersWait) {
idx = fUserServersWait->getNextIndexOfObject(server, 0);
if (idx != -1U) {
fUserServersWait->removeObject(idx);
if (0 == fUserServersWait->getCount()) {
OSSafeReleaseNULL(fUserServersWait);
}
}
}
if (!fUserServersWait && !fMatchingWork->getCount()) {
ackTo = fSystemPowerAckTo;
ackToRef = fSystemPowerAckRef;
fSystemPowerAckTo = NULL;
}
unlock();
if (ackTo) {
DKLOG("allowPowerChange\n");
ackTo->allowPowerChange((uintptr_t) ackToRef);
}
}
bool
IOServicePH::matchingStart(IOService * service)
{
uint32_t idx;
bool ok;
lock();
ok = !fSystemOff;
if (ok) {
idx = fMatchingWork->getNextIndexOfObject(service, 0);
if (idx == -1U) {
fMatchingWork->setObject(service);
}
} else {
if (!fMatchingDelayed) {
fMatchingDelayed = OSArray::withObjects((const OSObject **) &service, 1, 1);
} else {
idx = fMatchingDelayed->getNextIndexOfObject(service, 0);
if (idx == -1U) {
fMatchingDelayed->setObject(service);
}
}
}
unlock();
return ok;
}
void
IOServicePH::matchingEnd(IOService * service)
{
uint32_t idx;
OSArray * notifyServers;
OSArray * deferredMatches;
notifyServers = NULL;
deferredMatches = NULL;
lock();
if (service) {
idx = fMatchingWork->getNextIndexOfObject(service, 0);
if (idx != -1U) {
fMatchingWork->removeObject(idx);
}
}
if ((fUserServerOff != fSystemOff) && fUserServers->getCount()) {
if (fSystemOff) {
if (0 == fMatchingWork->getCount()) {
fUserServersWait = OSArray::withArray(fUserServers);
notifyServers = OSArray::withArray(fUserServers);
fUserServerOff = fSystemOff;
}
} else {
notifyServers = OSArray::withArray(fUserServers);
fUserServerOff = fSystemOff;
}
}
if (!fSystemOff && fMatchingDelayed) {
deferredMatches = fMatchingDelayed;
fMatchingDelayed = NULL;
}
unlock();
if (notifyServers) {
notifyServers->iterateObjects(^bool (OSObject * obj) {
IOUserServer * us;
us = (typeof(us))obj;
us->systemPower(fSystemOff);
return false;
});
OSSafeReleaseNULL(notifyServers);
}
if (deferredMatches) {
DKLOG("sleep deferred rematching count %d\n", deferredMatches->getCount());
deferredMatches->iterateObjects(^bool (OSObject * obj)
{
((IOService *)obj)->startMatching(kIOServiceAsynchronous);
return false;
});
deferredMatches->release();
}
serverAck(NULL);
}
IOReturn
IOServicePH::systemPowerChange(
void * target,
void * refCon,
UInt32 messageType, IOService * service,
void * messageArgument, vm_size_t argSize)
{
IOReturn ret;
IOUserServer * us;
IOPMSystemCapabilityChangeParameters * params;
us = NULL;
switch (messageType) {
case kIOMessageSystemCapabilityChange:
params = (typeof params)messageArgument;
if (kIODKLogPM & gIODKDebug) {
IOLog("IOServicePH::kIOMessageSystemCapabilityChange: %s%s 0x%x->0x%x\n",
params->changeFlags & kIOPMSystemCapabilityWillChange ? "will" : "",
params->changeFlags & kIOPMSystemCapabilityDidChange ? "did" : "",
params->fromCapabilities,
params->toCapabilities);
}
if ((params->changeFlags & kIOPMSystemCapabilityWillChange) &&
(params->fromCapabilities & kIOPMSystemCapabilityCPU) &&
((params->toCapabilities & kIOPMSystemCapabilityCPU) == 0)) {
lock();
fSystemOff = true;
fSystemPowerAckRef = params->notifyRef;
fSystemPowerAckTo = service;
unlock();
matchingEnd(NULL);
params->maxWaitForReply = 60 * 1000 * 1000;
ret = kIOReturnSuccess;
} else if ((params->changeFlags & kIOPMSystemCapabilityWillChange) &&
((params->fromCapabilities & kIOPMSystemCapabilityCPU) == 0) &&
(params->toCapabilities & kIOPMSystemCapabilityCPU)) {
lock();
fSystemOff = false;
unlock();
matchingEnd(NULL);
params->maxWaitForReply = 0;
ret = kIOReturnSuccess;
} else {
params->maxWaitForReply = 0;
ret = kIOReturnSuccess;
}
break;
default:
ret = kIOReturnUnsupported;
break;
}
return ret;
}
bool
IOService::startCandidate( IOService * service )
{
bool ok;
OSObject * obj;
OSObject * prop;
IOUserServer * userServer;
bool ph;
userServer = NULL;
obj = service->copyProperty(gIOUserServerNameKey);
if (obj && (this == gIOResources)) {
ok = false;
} else {
ok = service->attach( this );
}
if (!ok) {
return false;
}
if ((this != gIOResources) && (this != gIOUserResources)) {
checkResources();
service->checkResources();
}
ph = false;
{
OSString * bundleID;
OSString * serverName;
OSString * str;
const OSSymbol * sym;
OSDictionary * matching;
IOService * server;
OSNumber * serverTag;
uint64_t entryID;
if ((serverName = OSDynamicCast(OSString, obj))) {
obj = service->copyProperty(gIOModuleIdentifierKey);
bundleID = OSDynamicCast(OSString, obj);
entryID = service->getRegistryEntryID();
serverTag = OSNumber::withNumber(entryID, 64);
if (gKextdWillTerminate) {
DKLOG("%s disabled in shutdown\n", serverName->getCStringNoCopy());
service->detach(this);
OSSafeReleaseNULL(obj);
return false;
}
ph = IOServicePH::matchingStart(this);
if (!ph) {
DKLOG("%s deferred in sleep\n", serverName->getCStringNoCopy());
service->detach(this);
OSSafeReleaseNULL(obj);
return false;
}
prop = service->copyProperty(gIOUserClassKey);
str = OSDynamicCast(OSString, prop);
if (str) {
service->setName(str);
}
OSSafeReleaseNULL(prop);
if (!(kIODKDisableDextLaunch & gIODKDebug)) {
OSKext::requestDaemonLaunch(bundleID, serverName, serverTag);
}
sym = OSSymbol::withString(serverName);
matching = serviceMatching(gIOUserServerClassKey);
propertyMatching(gIOUserServerNameKey, sym, matching);
if (!(kIODKDisableDextTag & gIODKDebug)) {
propertyMatching(gIOUserServerTagKey, serverTag, matching);
}
server = __WAITING_FOR_USER_SERVER__(matching);
matching->release();
OSSafeReleaseNULL(serverTag);
OSSafeReleaseNULL(serverName);
userServer = OSDynamicCast(IOUserServer, server);
if (!userServer) {
service->detach(this);
IOServicePH::matchingEnd(this);
DKLOG(DKS " user server timeout\n", DKN(service));
return false;
}
if (!(kIODKDisableCDHashChecking & gIODKDebug)) {
if (!userServer->serviceMatchesCDHash(service)) {
service->detach(this);
IOServicePH::matchingEnd(this);
userServer->exit("CDHash check failed");
userServer->release();
return false;
}
}
OSKext *kext = OSKext::lookupKextWithIdentifier(bundleID);
if (!kext) {
const char *name = bundleID->getCStringNoCopy();
IOLog("%s Could not find OSKext for %s\n", __func__, name);
goto skip_log;
}
userServer->setTaskLoadTag(kext);
userServer->setDriverKitUUID(kext);
OSKext::OSKextLogDriverKitInfoLoad(kext);
skip_log:
OSSafeReleaseNULL(bundleID);
OSSafeReleaseNULL(kext);
if (!(kIODKDisableEntitlementChecking & gIODKDebug)) {
if (!userServer->checkEntitlements(this, service)) {
service->detach(this);
IOServicePH::matchingEnd(this);
userServer->exit("Entitlements check failed");
userServer->release();
return false;
}
}
userServer->serviceAttach(service, this);
}
}
AbsoluteTime startTime;
AbsoluteTime endTime;
UInt64 nano;
if (kIOLogStart & gIOKitDebug) {
clock_get_uptime(&startTime);
}
ok = service->start(this);
if (kIOLogStart & gIOKitDebug) {
clock_get_uptime(&endTime);
if (CMP_ABSOLUTETIME(&endTime, &startTime) > 0) {
SUB_ABSOLUTETIME(&endTime, &startTime);
absolutetime_to_nanoseconds(endTime, &nano);
if (nano > 500000000ULL) {
IOLog("%s::start took %ld ms\n", service->getName(), (long)(UInt32)(nano / 1000000ULL));
}
}
}
if (userServer) {
userServer->serviceStarted(service, this, ok);
userServer->release();
}
if (!ok) {
service->detach( this );
}
if (ph) {
IOServicePH::matchingEnd(this);
}
return ok;
}
void
IOService::publishResource( const char * key, OSObject * value )
{
const OSSymbol * sym;
if ((sym = OSSymbol::withCString( key))) {
publishResource( sym, value);
sym->release();
}
}
void
IOService::publishResource( const OSSymbol * key, OSObject * value )
{
if (NULL == value) {
value = (OSObject *) gIOServiceKey;
}
gIOResources->setProperty( key, value);
if (IORecursiveLockHaveLock( gNotificationLock)) {
return;
}
gIOResourceGenerationCount++;
gIOResources->registerService();
}
void
IOService::publishUserResource( const OSSymbol * key, OSObject * value )
{
if (NULL == value) {
value = (OSObject *) gIOServiceKey;
}
gIOUserResources->setProperty( key, value);
if (IORecursiveLockHaveLock( gNotificationLock)) {
return;
}
gIOResourceGenerationCount++;
gIOUserResources->registerService();
}
bool
IOService::addNeededResource( const char * key )
{
OSObject * resourcesProp;
OSSet * set;
OSString * newKey;
bool ret;
resourcesProp = copyProperty( gIOResourceMatchKey );
if (!resourcesProp) {
return false;
}
newKey = OSString::withCString( key );
if (!newKey) {
resourcesProp->release();
return false;
}
set = OSDynamicCast( OSSet, resourcesProp );
if (!set) {
set = OSSet::withCapacity( 1 );
if (set) {
set->setObject( resourcesProp );
}
} else {
set->retain();
}
set->setObject( newKey );
newKey->release();
ret = setProperty( gIOResourceMatchKey, set );
set->release();
resourcesProp->release();
return ret;
}
bool
IOService::checkResource( OSObject * matching )
{
OSString * str;
OSDictionary * table;
if ((str = OSDynamicCast( OSString, matching ))) {
if (gIOResources->getProperty( str )) {
return true;
}
}
if (str) {
table = resourceMatching( str );
} else if ((table = OSDynamicCast( OSDictionary, matching ))) {
table->retain();
} else {
IOLog("%s: Can't match using: %s\n", getName(),
matching->getMetaClass()->getClassName());
return true;
}
if (gIOKitDebug & kIOLogConfig) {
LOG("config(%p): stalling %s\n", IOSERVICE_OBFUSCATE(IOThreadSelf()), getName());
}
waitForService( table );
if (gIOKitDebug & kIOLogConfig) {
LOG("config(%p): waking\n", IOSERVICE_OBFUSCATE(IOThreadSelf()));
}
return true;
}
bool
IOService::checkResources( void )
{
OSObject * resourcesProp;
OSSet * set;
OSIterator * iter;
bool ok;
resourcesProp = copyProperty( gIOResourceMatchKey );
if (NULL == resourcesProp) {
return true;
}
if ((set = OSDynamicCast( OSSet, resourcesProp ))) {
iter = OSCollectionIterator::withCollection( set );
ok = (NULL != iter);
while (ok && (resourcesProp = iter->getNextObject())) {
ok = checkResource( resourcesProp );
}
if (iter) {
iter->release();
}
} else {
ok = checkResource( resourcesProp );
}
OSSafeReleaseNULL(resourcesProp);
return ok;
}
void
_IOConfigThread::configThread( int configThreadId )
{
_IOConfigThread * inst;
do {
if (!(inst = new _IOConfigThread)) {
continue;
}
if (!inst->init()) {
continue;
}
thread_t thread;
if (KERN_SUCCESS != kernel_thread_start(&_IOConfigThread::main, inst, &thread)) {
continue;
}
char threadName[MAXTHREADNAMESIZE];
snprintf(threadName, sizeof(threadName), "IOConfigThread_%d", configThreadId);
thread_set_thread_name(thread, threadName);
thread_deallocate(thread);
return;
} while (false);
if (inst) {
inst->release();
}
return;
}
void
IOService::doServiceMatch( IOOptionBits options )
{
_IOServiceNotifier * notify;
OSIterator * iter;
OSOrderedSet * matches;
OSArray * resourceKeys = NULL;
SInt32 catalogGeneration;
bool keepGuessing = true;
bool reRegistered = true;
bool didRegister;
OSArray * notifiers[2] = {NULL};
while (keepGuessing) {
matches = gIOCatalogue->findDrivers( this, &catalogGeneration );
if (matches) {
lockForArbitration();
if (0 == (__state[0] & kIOServiceFirstPublishState)) {
getMetaClass()->addInstance(this);
notifiers[0] = copyNotifiers(gIOFirstPublishNotification,
kIOServiceFirstPublishState, 0xffffffff );
}
LOCKREADNOTIFY();
__state[1] &= ~kIOServiceNeedConfigState;
__state[1] |= kIOServiceConfigState | kIOServiceConfigRunning;
didRegister = (0 == (kIOServiceRegisteredState & __state[0]));
__state[0] |= kIOServiceRegisteredState;
keepGuessing &= (0 == (__state[0] & kIOServiceInactiveState));
if (reRegistered && keepGuessing) {
iter = OSCollectionIterator::withCollection((OSOrderedSet *)
gNotifications->getObject( gIOPublishNotification ));
if (iter) {
while ((notify = (_IOServiceNotifier *)
iter->getNextObject())) {
if (matchPassive(notify->matching, 0)
&& (kIOServiceNotifyEnable & notify->state)) {
matches->setObject( notify );
}
}
iter->release();
}
}
UNLOCKNOTIFY();
unlockForArbitration();
invokeNotifiers(¬ifiers[0]);
if (keepGuessing && matches->getCount() && (kIOReturnSuccess == getResources())) {
if ((this == gIOResources) || (this == gIOUserResources)) {
if (resourceKeys) {
resourceKeys->release();
}
resourceKeys = copyPropertyKeys();
}
probeCandidates( matches );
} else {
matches->release();
}
}
lockForArbitration();
reRegistered = (0 != (__state[1] & kIOServiceNeedConfigState));
keepGuessing =
(reRegistered || (catalogGeneration !=
gIOCatalogue->getGenerationCount()))
&& (0 == (__state[0] & kIOServiceInactiveState));
if (keepGuessing) {
unlockForArbitration();
}
}
if ((0 == (__state[0] & kIOServiceInactiveState))
&& (0 == (__state[1] & kIOServiceModuleStallState))) {
if (resourceKeys) {
setProperty(gIOResourceMatchedKey, resourceKeys);
}
notifiers[0] = copyNotifiers(gIOMatchedNotification,
kIOServiceMatchedState, 0xffffffff);
if (0 == (__state[0] & kIOServiceFirstMatchState)) {
notifiers[1] = copyNotifiers(gIOFirstMatchNotification,
kIOServiceFirstMatchState, 0xffffffff);
}
}
__state[1] &= ~kIOServiceConfigRunning;
unlockForArbitration();
if (resourceKeys) {
resourceKeys->release();
}
invokeNotifiers(¬ifiers[0]);
invokeNotifiers(¬ifiers[1]);
lockForArbitration();
__state[1] &= ~kIOServiceConfigState;
scheduleTerminatePhase2();
_adjustBusy( -1 );
unlockForArbitration();
}
UInt32
IOService::_adjustBusy( SInt32 delta )
{
IOService * next;
UInt32 count;
UInt32 result;
bool wasQuiet, nowQuiet, needWake;
next = this;
result = __state[1] & kIOServiceBusyStateMask;
if (delta) {
do {
if (next != this) {
next->lockForArbitration();
}
count = next->__state[1] & kIOServiceBusyStateMask;
wasQuiet = (0 == count);
if (((delta < 0) && wasQuiet) || ((delta > 0) && (kIOServiceBusyMax == count))) {
OSReportWithBacktrace("%s: bad busy count (%d,%d)\n", next->getName(), count, delta);
} else {
count += delta;
}
next->__state[1] = (next->__state[1] & ~kIOServiceBusyStateMask) | count;
nowQuiet = (0 == count);
needWake = (0 != (kIOServiceBusyWaiterState & next->__state[1]));
if (needWake) {
next->__state[1] &= ~kIOServiceBusyWaiterState;
IOLockLock( gIOServiceBusyLock );
thread_wakeup((event_t) next);
IOLockUnlock( gIOServiceBusyLock );
}
if (next != this) {
next->unlockForArbitration();
}
if ((wasQuiet || nowQuiet)) {
uint64_t regID = next->getRegistryEntryID();
IOServiceTrace(
((wasQuiet ) ? IOSERVICE_BUSY : IOSERVICE_NONBUSY),
(uintptr_t) regID,
(uintptr_t) (regID >> 32),
(uintptr_t) next,
0);
if (wasQuiet) {
next->__timeBusy = mach_absolute_time();
} else {
next->__accumBusy += mach_absolute_time() - next->__timeBusy;
next->__timeBusy = 0;
}
MessageClientsContext context;
context.service = next;
context.type = kIOMessageServiceBusyStateChange;
context.argument = (void *) wasQuiet;
context.argSize = 0;
applyToInterestNotifiers( next, gIOBusyInterest,
&messageClientsApplier, &context );
#if !NO_KEXTD
if (nowQuiet && (next == gIOServiceRoot)) {
OSKext::considerUnloads();
IOServiceTrace(IOSERVICE_REGISTRY_QUIET, 0, 0, 0, 0);
}
#endif
}
delta = nowQuiet ? -1 : +1;
} while ((wasQuiet || nowQuiet) && (next = next->getProvider()));
}
return result;
}
void
IOService::adjustBusy( SInt32 delta )
{
lockForArbitration();
_adjustBusy( delta );
unlockForArbitration();
}
uint64_t
IOService::getAccumulatedBusyTime( void )
{
uint64_t accumBusy = __accumBusy;
uint64_t timeBusy = __timeBusy;
uint64_t nano;
do{
accumBusy = __accumBusy;
timeBusy = __timeBusy;
if (timeBusy) {
accumBusy += mach_absolute_time() - timeBusy;
}
}while (timeBusy != __timeBusy);
absolutetime_to_nanoseconds(*(AbsoluteTime *)&accumBusy, &nano);
return nano;
}
UInt32
IOService::getBusyState( void )
{
return __state[1] & kIOServiceBusyStateMask;
}
IOReturn
IOService::waitForState( UInt32 mask, UInt32 value,
mach_timespec_t * timeout )
{
panic("waitForState");
return kIOReturnUnsupported;
}
IOReturn
IOService::waitForState( UInt32 mask, UInt32 value,
uint64_t timeout )
{
bool wait;
int waitResult = THREAD_AWAKENED;
bool computeDeadline = true;
AbsoluteTime abstime;
do {
lockForArbitration();
IOLockLock( gIOServiceBusyLock );
wait = (value != (__state[1] & mask));
if (wait) {
__state[1] |= kIOServiceBusyWaiterState;
unlockForArbitration();
if (timeout != UINT64_MAX) {
if (computeDeadline) {
AbsoluteTime nsinterval;
nanoseconds_to_absolutetime(timeout, &nsinterval );
clock_absolutetime_interval_to_deadline(nsinterval, &abstime);
computeDeadline = false;
}
assert_wait_deadline((event_t)this, THREAD_UNINT, __OSAbsoluteTime(abstime));
} else {
assert_wait((event_t)this, THREAD_UNINT );
}
} else {
unlockForArbitration();
}
IOLockUnlock( gIOServiceBusyLock );
if (wait) {
waitResult = thread_block(THREAD_CONTINUE_NULL);
}
} while (wait && (waitResult != THREAD_TIMED_OUT));
if (waitResult == THREAD_TIMED_OUT) {
return kIOReturnTimeout;
} else {
return kIOReturnSuccess;
}
}
IOReturn
IOService::waitQuiet( uint64_t timeout )
{
IOReturn ret;
uint32_t loops;
char * string = NULL;
char * panicString = NULL;
size_t len;
size_t panicStringLen;
uint64_t time;
uint64_t nano;
bool kextdWait;
bool dopanic;
#if KASAN
enum { kTimeoutExtensions = 8 };
#else
enum { kTimeoutExtensions = 4 };
#endif
time = mach_absolute_time();
kextdWait = false;
for (loops = 0; loops < kTimeoutExtensions; loops++) {
ret = waitForState( kIOServiceBusyStateMask, 0, timeout );
if (loops && (kIOReturnSuccess == ret)) {
time = mach_absolute_time() - time;
absolutetime_to_nanoseconds(*(AbsoluteTime *)&time, &nano);
IOLog("busy extended ok[%d], (%llds, %llds)\n",
loops, timeout / 1000000000ULL, nano / 1000000000ULL);
break;
} else if (kIOReturnTimeout != ret) {
break;
} else if (timeout < (4100ull * NSEC_PER_SEC)) {
break;
}
{
IORegistryIterator * iter;
OSOrderedSet * set;
OSOrderedSet * leaves;
IOService * next;
IOService * nextParent;
char * s;
size_t l;
len = 256;
panicStringLen = 256;
if (!string) {
string = IONew(char, len);
}
if (!panicString) {
panicString = IONew(char, panicStringLen);
}
set = NULL;
kextdWait = OSKext::isWaitingKextd();
iter = IORegistryIterator::iterateOver(this, gIOServicePlane, kIORegistryIterateRecursively);
leaves = OSOrderedSet::withCapacity(4);
if (iter) {
set = iter->iterateAll();
}
if (string && panicString && leaves && set) {
string[0] = panicString[0] = 0;
set->setObject(this);
while ((next = (IOService *) set->getLastObject())) {
if (next->getBusyState()) {
if (kIOServiceModuleStallState & next->__state[1]) {
kextdWait = true;
}
leaves->setObject(next);
nextParent = next;
while ((nextParent = nextParent->getProvider())) {
set->removeObject(nextParent);
leaves->removeObject(nextParent);
}
}
set->removeObject(next);
}
s = string;
while ((next = (IOService *) leaves->getLastObject())) {
l = snprintf(s, len, "%s'%s'", ((s == string) ? "" : ", "), next->getName());
if (l >= len) {
break;
}
s += l;
len -= l;
leaves->removeObject(next);
}
}
OSSafeReleaseNULL(leaves);
OSSafeReleaseNULL(set);
OSSafeReleaseNULL(iter);
}
dopanic = ((loops >= (kTimeoutExtensions - 1)) && (kIOWaitQuietPanics & gIOKitDebug));
snprintf(panicString, panicStringLen,
"%s[%d], (%llds): %s",
kextdWait ? "kextd stall" : "busy timeout",
loops, timeout / 1000000000ULL,
string ? string : "");
IOLog("%s\n", panicString);
if (dopanic) {
panic("%s", panicString);
} else if (!loops) {
getPMRootDomain()->startSpinDump(1);
}
}
if (string) {
IODelete(string, char, 256);
}
if (panicString) {
IODelete(panicString, char, panicStringLen);
}
return ret;
}
IOReturn
IOService::waitQuiet( mach_timespec_t * timeout )
{
uint64_t timeoutNS;
if (timeout) {
timeoutNS = timeout->tv_sec;
timeoutNS *= kSecondScale;
timeoutNS += timeout->tv_nsec;
} else {
timeoutNS = UINT64_MAX;
}
return waitQuiet(timeoutNS);
}
bool
IOService::serializeProperties( OSSerialize * s ) const
{
#if 0
((IOService *)this)->setProperty(((IOService *)this)->__state,
sizeof(__state), "__state");
#endif
return super::serializeProperties(s);
}
void
_IOConfigThread::main(void * arg, wait_result_t result)
{
_IOConfigThread * self = (_IOConfigThread *) arg;
_IOServiceJob * job;
IOService * nub;
bool alive = true;
kern_return_t kr;
thread_precedence_policy_data_t precedence = { -1 };
kr = thread_policy_set(current_thread(),
THREAD_PRECEDENCE_POLICY,
(thread_policy_t) &precedence,
THREAD_PRECEDENCE_POLICY_COUNT);
if (KERN_SUCCESS != kr) {
IOLog("thread_policy_set(%d)\n", kr);
}
do {
semaphore_wait( gJobsSemaphore );
IOTakeLock( gJobsLock );
job = (_IOServiceJob *) gJobs->getFirstObject();
job->retain();
gJobs->removeObject(job);
if (job) {
gOutstandingJobs--;
gNumWaitingThreads--; }
IOUnlock( gJobsLock );
if (job) {
nub = job->nub;
if (gIOKitDebug & kIOLogConfig) {
LOG("config(%p): starting on %s, %d\n",
IOSERVICE_OBFUSCATE(IOThreadSelf()), job->nub->getName(), job->type);
}
switch (job->type) {
case kMatchNubJob:
nub->doServiceMatch( job->options );
break;
default:
LOG("config(%p): strange type (%d)\n",
IOSERVICE_OBFUSCATE(IOThreadSelf()), job->type );
break;
}
nub->release();
job->release();
IOTakeLock( gJobsLock );
alive = (gOutstandingJobs > gNumWaitingThreads);
if (alive) {
gNumWaitingThreads++; }
else {
if (0 == --gNumConfigThreads) {
IOLockWakeup( gJobsLock, (event_t) &gNumConfigThreads, false );
}
}
IOUnlock( gJobsLock );
}
} while (alive);
if (gIOKitDebug & kIOLogConfig) {
LOG("config(%p): terminating\n", IOSERVICE_OBFUSCATE(IOThreadSelf()));
}
self->release();
}
IOReturn
IOService::waitMatchIdle( UInt32 msToWait )
{
bool wait;
int waitResult = THREAD_AWAKENED;
bool computeDeadline = true;
AbsoluteTime deadline;
IOLockLock( gJobsLock );
do {
wait = (0 != gNumConfigThreads);
if (wait) {
if (msToWait) {
if (computeDeadline) {
clock_interval_to_deadline(
msToWait, kMillisecondScale, &deadline );
computeDeadline = false;
}
waitResult = IOLockSleepDeadline( gJobsLock, &gNumConfigThreads,
deadline, THREAD_UNINT );
} else {
waitResult = IOLockSleep( gJobsLock, &gNumConfigThreads,
THREAD_UNINT );
}
}
} while (wait && (waitResult != THREAD_TIMED_OUT));
IOLockUnlock( gJobsLock );
if (waitResult == THREAD_TIMED_OUT) {
return kIOReturnTimeout;
} else {
return kIOReturnSuccess;
}
}
void
IOService::cpusRunning(void)
{
gCPUsRunning = true;
}
void
_IOServiceJob::pingConfig( _IOServiceJob * job )
{
int count;
bool create;
assert( job );
IOTakeLock( gJobsLock );
gOutstandingJobs++;
gJobs->setLastObject( job );
count = gNumWaitingThreads;
create = ((gOutstandingJobs > count)
&& ((gNumConfigThreads < kMaxConfigThreads)
|| (job->nub == gIOResources)
|| !gCPUsRunning));
if (create) {
gNumConfigThreads++;
gNumWaitingThreads++;
}
IOUnlock( gJobsLock );
job->release();
if (create) {
if (gIOKitDebug & kIOLogConfig) {
LOG("config(%d): creating\n", gNumConfigThreads - 1);
}
_IOConfigThread::configThread(gNumConfigThreads - 1);
}
semaphore_signal( gJobsSemaphore );
}
struct IOServiceMatchContext {
OSDictionary * table;
OSObject * result;
uint32_t options;
uint32_t state;
uint32_t count;
uint32_t done;
};
bool
IOService::instanceMatch(const OSObject * entry, void * context)
{
IOServiceMatchContext * ctx = (typeof(ctx))context;
IOService * service = (typeof(service))entry;
OSDictionary * table = ctx->table;
uint32_t options = ctx->options;
uint32_t state = ctx->state;
uint32_t done;
bool match;
done = 0;
do{
match = ((state == (state & service->__state[0]))
&& (0 == (service->__state[0] & kIOServiceInactiveState)));
if (!match) {
break;
}
ctx->count += table->getCount();
match = service->matchInternal(table, options, &done);
ctx->done += done;
}while (false);
if (!match) {
return false;
}
if ((kIONotifyOnce & options) && (ctx->done == ctx->count)) {
service->retain();
ctx->result = service;
return true;
} else if (!ctx->result) {
ctx->result = OSSet::withObjects((const OSObject **) &service, 1, 1);
} else {
((OSSet *)ctx->result)->setObject(service);
}
return false;
}
OSObject *
IOService::copyExistingServices( OSDictionary * matching,
IOOptionBits inState, IOOptionBits options )
{
OSObject * current = NULL;
OSIterator * iter;
IOService * service;
OSObject * obj;
OSString * str;
if (!matching) {
return NULL;
}
#if MATCH_DEBUG
OSSerialize * s = OSSerialize::withCapacity(128);
matching->serialize(s);
#endif
if ((obj = matching->getObject(gIOProviderClassKey))
&& gIOResourcesKey
&& gIOResourcesKey->isEqualTo(obj)
&& (service = gIOResources)) {
if ((inState == (service->__state[0] & inState))
&& (0 == (service->__state[0] & kIOServiceInactiveState))
&& service->matchPassive(matching, options)) {
if (options & kIONotifyOnce) {
service->retain();
current = service;
} else {
current = OSSet::withObjects((const OSObject **) &service, 1, 1 );
}
}
} else {
IOServiceMatchContext ctx;
ctx.table = matching;
ctx.state = inState;
ctx.count = 0;
ctx.done = 0;
ctx.options = options;
ctx.result = NULL;
if ((str = OSDynamicCast(OSString, obj))) {
const OSSymbol * sym = OSSymbol::withString(str);
OSMetaClass::applyToInstancesOfClassName(sym, instanceMatch, &ctx);
sym->release();
} else {
IOService::gMetaClass.applyToInstances(instanceMatch, &ctx);
}
current = ctx.result;
options |= kIOServiceInternalDone | kIOServiceClassDone;
if (current && (ctx.done != ctx.count)) {
OSSet *
source = OSDynamicCast(OSSet, current);
current = NULL;
while ((service = (IOService *) source->getAnyObject())) {
if (service->matchPassive(matching, options)) {
if (options & kIONotifyOnce) {
service->retain();
current = service;
break;
}
if (current) {
((OSSet *)current)->setObject( service );
} else {
current = OSSet::withObjects(
(const OSObject **) &service, 1, 1 );
}
}
source->removeObject(service);
}
source->release();
}
}
#if MATCH_DEBUG
{
OSObject * _current = 0;
iter = IORegistryIterator::iterateOver( gIOServicePlane,
kIORegistryIterateRecursively );
if (iter) {
do {
iter->reset();
while ((service = (IOService *) iter->getNextObject())) {
if ((inState == (service->__state[0] & inState))
&& (0 == (service->__state[0] & kIOServiceInactiveState))
&& service->matchPassive(matching, 0)) {
if (options & kIONotifyOnce) {
service->retain();
_current = service;
break;
}
if (_current) {
((OSSet *)_current)->setObject( service );
} else {
_current = OSSet::withObjects(
(const OSObject **) &service, 1, 1 );
}
}
}
} while (!service && !iter->isValid());
iter->release();
}
if (((current != 0) != (_current != 0))
|| (current && _current && !current->isEqualTo(_current))) {
OSSerialize * s1 = OSSerialize::withCapacity(128);
OSSerialize * s2 = OSSerialize::withCapacity(128);
current->serialize(s1);
_current->serialize(s2);
kprintf("**mismatch** %p %p\n%s\n%s\n%s\n", IOSERVICE_OBFUSCATE(current),
IOSERVICE_OBFUSCATE(_current), s->text(), s1->text(), s2->text());
s1->release();
s2->release();
}
if (_current) {
_current->release();
}
}
s->release();
#endif
if (current && (0 == (options & (kIONotifyOnce | kIOServiceExistingSet)))) {
iter = OSCollectionIterator::withCollection((OSSet *)current );
current->release();
current = iter;
}
return current;
}
OSIterator *
IOService::getMatchingServices( OSDictionary * matching )
{
OSIterator * iter;
LOCKWRITENOTIFY();
iter = (OSIterator *) copyExistingServices( matching,
kIOServiceMatchedState );
UNLOCKNOTIFY();
return iter;
}
IOService *
IOService::copyMatchingService( OSDictionary * matching )
{
IOService * service;
LOCKWRITENOTIFY();
service = (IOService *) copyExistingServices( matching,
kIOServiceMatchedState, kIONotifyOnce );
UNLOCKNOTIFY();
return service;
}
struct _IOServiceMatchingNotificationHandlerRef {
IOServiceNotificationHandler handler;
void * ref;
};
static bool
_IOServiceMatchingNotificationHandler( void * target, void * refCon,
IOService * newService,
IONotifier * notifier )
{
return (*((_IOServiceNotifier *) notifier)->compatHandler)(target, refCon, newService);
}
IONotifier *
IOService::setNotification(
const OSSymbol * type, OSDictionary * matching,
IOServiceMatchingNotificationHandler handler, void * target, void * ref,
SInt32 priority )
{
_IOServiceNotifier * notify = NULL;
OSOrderedSet * set;
if (!matching) {
return NULL;
}
notify = new _IOServiceNotifier;
if (notify && !notify->init()) {
notify->release();
notify = NULL;
}
if (notify) {
notify->handler = handler;
notify->target = target;
notify->type = type;
notify->matching = matching;
matching->retain();
if (handler == &_IOServiceMatchingNotificationHandler) {
notify->compatHandler = ((_IOServiceMatchingNotificationHandlerRef *)ref)->handler;
notify->ref = ((_IOServiceMatchingNotificationHandlerRef *)ref)->ref;
} else {
notify->ref = ref;
}
notify->priority = priority;
notify->state = kIOServiceNotifyEnable;
queue_init( ¬ify->handlerInvocations );
if (NULL == (set = (OSOrderedSet *) gNotifications->getObject( type ))) {
set = OSOrderedSet::withCapacity( 1,
IONotifyOrdering, NULL );
if (set) {
gNotifications->setObject( type, set );
set->release();
}
}
notify->whence = set;
if (set) {
set->setObject( notify );
}
}
return notify;
}
IONotifier *
IOService::doInstallNotification(
const OSSymbol * type, OSDictionary * matching,
IOServiceMatchingNotificationHandler handler,
void * target, void * ref,
SInt32 priority, OSIterator ** existing )
{
OSIterator * exist;
IONotifier * notify;
IOOptionBits inState;
if (!matching) {
return NULL;
}
if (type == gIOPublishNotification) {
inState = kIOServiceRegisteredState;
} else if (type == gIOFirstPublishNotification) {
inState = kIOServiceFirstPublishState;
} else if (type == gIOMatchedNotification) {
inState = kIOServiceMatchedState;
} else if (type == gIOFirstMatchNotification) {
inState = kIOServiceFirstMatchState;
} else if ((type == gIOTerminatedNotification) || (type == gIOWillTerminateNotification)) {
inState = 0;
} else {
return NULL;
}
notify = setNotification( type, matching, handler, target, ref, priority );
if (inState) {
exist = (OSIterator *) copyExistingServices( matching, inState );
} else {
exist = NULL;
}
*existing = exist;
return notify;
}
#if !defined(__LP64__)
IONotifier *
IOService::installNotification(const OSSymbol * type, OSDictionary * matching,
IOServiceNotificationHandler handler,
void * target, void * refCon,
SInt32 priority, OSIterator ** existing )
{
IONotifier * result;
_IOServiceMatchingNotificationHandlerRef ref;
ref.handler = handler;
ref.ref = refCon;
result = (_IOServiceNotifier *) installNotification( type, matching,
&_IOServiceMatchingNotificationHandler,
target, &ref, priority, existing );
if (result) {
matching->release();
}
return result;
}
#endif
IONotifier *
IOService::installNotification(
const OSSymbol * type, OSDictionary * matching,
IOServiceMatchingNotificationHandler handler,
void * target, void * ref,
SInt32 priority, OSIterator ** existing )
{
IONotifier * notify;
LOCKWRITENOTIFY();
notify = doInstallNotification( type, matching, handler, target, ref,
priority, existing );
if (notify) {
notify->retain();
}
UNLOCKNOTIFY();
return notify;
}
IONotifier *
IOService::addNotification(
const OSSymbol * type, OSDictionary * matching,
IOServiceNotificationHandler handler,
void * target, void * refCon,
SInt32 priority )
{
IONotifier * result;
_IOServiceMatchingNotificationHandlerRef ref;
ref.handler = handler;
ref.ref = refCon;
result = addMatchingNotification(type, matching, &_IOServiceMatchingNotificationHandler,
target, &ref, priority);
if (result) {
matching->release();
}
return result;
}
IONotifier *
IOService::addMatchingNotification(
const OSSymbol * type, OSDictionary * matching,
IOServiceMatchingNotificationHandler handler,
void * target, void * ref,
SInt32 priority )
{
OSIterator * existing = NULL;
IONotifier * ret;
_IOServiceNotifier * notify;
IOService * next;
ret = notify = (_IOServiceNotifier *) installNotification( type, matching,
handler, target, ref, priority, &existing );
if (!ret) {
return NULL;
}
if (existing) {
while ((next = (IOService *) existing->getNextObject())) {
if (0 == (next->__state[0] & kIOServiceInactiveState)) {
next->invokeNotifier( notify );
}
}
existing->release();
}
LOCKWRITENOTIFY();
bool removed = (NULL == notify->whence);
notify->release();
if (removed) {
ret = gIOServiceNullNotifier;
}
UNLOCKNOTIFY();
return ret;
}
static bool
IOServiceMatchingNotificationHandlerToBlock( void * target __unused, void * refCon,
IOService * newService,
IONotifier * notifier )
{
return ((IOServiceMatchingNotificationHandlerBlock) refCon)(newService, notifier);
}
IONotifier *
IOService::addMatchingNotification(
const OSSymbol * type, OSDictionary * matching,
SInt32 priority,
IOServiceMatchingNotificationHandlerBlock handler)
{
IONotifier * notify;
void * block;
block = Block_copy(handler);
if (!block) {
return NULL;
}
notify = addMatchingNotification(type, matching,
&IOServiceMatchingNotificationHandlerToBlock, NULL, block, priority);
if (!notify) {
Block_release(block);
}
return notify;
}
bool
IOService::syncNotificationHandler(
void * , void * ref,
IOService * newService,
IONotifier * notifier )
{
LOCKWRITENOTIFY();
if (!*((IOService **) ref)) {
newService->retain();
(*(IOService **) ref) = newService;
WAKEUPNOTIFY(ref);
}
UNLOCKNOTIFY();
return false;
}
IOService *
IOService::waitForMatchingService( OSDictionary * matching,
uint64_t timeout)
{
IONotifier * notify = NULL;
SInt32 priority = 0;
IOService * result;
if (!matching) {
return NULL;
}
result = NULL;
LOCKWRITENOTIFY();
do{
result = (IOService *) copyExistingServices( matching,
kIOServiceMatchedState, kIONotifyOnce );
if (result) {
break;
}
notify = IOService::setNotification( gIOMatchedNotification, matching,
&IOService::syncNotificationHandler, (void *) NULL,
&result, priority );
if (!notify) {
break;
}
if (UINT64_MAX != timeout) {
AbsoluteTime deadline;
nanoseconds_to_absolutetime(timeout, &deadline);
clock_absolutetime_interval_to_deadline(deadline, &deadline);
SLEEPNOTIFYTO(&result, deadline);
} else {
SLEEPNOTIFY(&result);
}
}while (false);
UNLOCKNOTIFY();
if (notify) {
notify->remove(); }
return result;
}
IOService *
IOService::waitForService( OSDictionary * matching,
mach_timespec_t * timeout )
{
IOService * result;
uint64_t timeoutNS;
if (timeout) {
timeoutNS = timeout->tv_sec;
timeoutNS *= kSecondScale;
timeoutNS += timeout->tv_nsec;
} else {
timeoutNS = UINT64_MAX;
}
result = waitForMatchingService(matching, timeoutNS);
matching->release();
if (result) {
result->release();
}
return result;
}
__dead2
void
IOService::deliverNotification( const OSSymbol * type,
IOOptionBits orNewState, IOOptionBits andNewState )
{
panic("deliverNotification");
}
OSArray *
IOService::copyNotifiers(const OSSymbol * type,
IOOptionBits orNewState, IOOptionBits andNewState )
{
_IOServiceNotifier * notify;
OSIterator * iter;
OSArray * willSend = NULL;
lockForArbitration();
if ((0 == (__state[0] & kIOServiceInactiveState))
|| (type == gIOTerminatedNotification)
|| (type == gIOWillTerminateNotification)) {
LOCKREADNOTIFY();
iter = OSCollectionIterator::withCollection((OSOrderedSet *)
gNotifications->getObject( type ));
if (iter) {
while ((notify = (_IOServiceNotifier *) iter->getNextObject())) {
if (matchPassive(notify->matching, 0)
&& (kIOServiceNotifyEnable & notify->state)) {
if (NULL == willSend) {
willSend = OSArray::withCapacity(8);
}
if (willSend) {
willSend->setObject( notify );
}
}
}
iter->release();
}
__state[0] = (__state[0] | orNewState) & andNewState;
UNLOCKNOTIFY();
}
unlockForArbitration();
return willSend;
}
IOOptionBits
IOService::getState( void ) const
{
return __state[0];
}
OSDictionary *
IOService::serviceMatching( const OSString * name,
OSDictionary * table )
{
const OSString * str;
str = OSSymbol::withString(name);
if (!str) {
return NULL;
}
if (!table) {
table = OSDictionary::withCapacity( 2 );
}
if (table) {
table->setObject(gIOProviderClassKey, (OSObject *)str );
}
str->release();
return table;
}
OSDictionary *
IOService::serviceMatching( const char * name,
OSDictionary * table )
{
const OSString * str;
str = OSSymbol::withCString( name );
if (!str) {
return NULL;
}
table = serviceMatching( str, table );
str->release();
return table;
}
OSDictionary *
IOService::nameMatching( const OSString * name,
OSDictionary * table )
{
if (!table) {
table = OSDictionary::withCapacity( 2 );
}
if (table) {
table->setObject( gIONameMatchKey, (OSObject *)name );
}
return table;
}
OSDictionary *
IOService::nameMatching( const char * name,
OSDictionary * table )
{
const OSString * str;
str = OSSymbol::withCString( name );
if (!str) {
return NULL;
}
table = nameMatching( str, table );
str->release();
return table;
}
OSDictionary *
IOService::resourceMatching( const OSString * str,
OSDictionary * table )
{
table = serviceMatching( gIOResourcesKey, table );
if (table) {
table->setObject( gIOResourceMatchKey, (OSObject *) str );
}
return table;
}
OSDictionary *
IOService::resourceMatching( const char * name,
OSDictionary * table )
{
const OSSymbol * str;
str = OSSymbol::withCString( name );
if (!str) {
return NULL;
}
table = resourceMatching( str, table );
str->release();
return table;
}
OSDictionary *
IOService::propertyMatching( const OSSymbol * key, const OSObject * value,
OSDictionary * table )
{
OSDictionary * properties;
properties = OSDictionary::withCapacity( 2 );
if (!properties) {
return NULL;
}
properties->setObject( key, value );
if (!table) {
table = OSDictionary::withCapacity( 2 );
}
if (table) {
table->setObject( gIOPropertyMatchKey, properties );
}
properties->release();
return table;
}
OSDictionary *
IOService::registryEntryIDMatching( uint64_t entryID,
OSDictionary * table )
{
OSNumber * num;
num = OSNumber::withNumber( entryID, 64 );
if (!num) {
return NULL;
}
if (!table) {
table = OSDictionary::withCapacity( 2 );
}
if (table) {
table->setObject( gIORegistryEntryIDKey, num );
}
if (num) {
num->release();
}
return table;
}
void
_IOServiceNotifier::wait()
{
_IOServiceNotifierInvocation * next;
bool doWait;
do {
doWait = false;
queue_iterate( &handlerInvocations, next,
_IOServiceNotifierInvocation *, link) {
if (next->thread != current_thread()) {
doWait = true;
break;
}
}
if (doWait) {
state |= kIOServiceNotifyWaiter;
SLEEPNOTIFY(this);
}
} while (doWait);
}
void
_IOServiceNotifier::free()
{
assert( queue_empty( &handlerInvocations ));
if (handler == &IOServiceMatchingNotificationHandlerToBlock) {
Block_release(ref);
}
OSObject::free();
}
void
_IOServiceNotifier::remove()
{
LOCKWRITENOTIFY();
if (whence) {
whence->removeObject((OSObject *) this );
whence = NULL;
}
if (matching) {
matching->release();
matching = NULL;
}
state &= ~kIOServiceNotifyEnable;
wait();
UNLOCKNOTIFY();
release();
}
bool
_IOServiceNotifier::disable()
{
bool ret;
LOCKWRITENOTIFY();
ret = (0 != (kIOServiceNotifyEnable & state));
state &= ~kIOServiceNotifyEnable;
if (ret) {
wait();
}
UNLOCKNOTIFY();
return ret;
}
void
_IOServiceNotifier::enable( bool was )
{
LOCKWRITENOTIFY();
if (was) {
state |= kIOServiceNotifyEnable;
} else {
state &= ~kIOServiceNotifyEnable;
}
UNLOCKNOTIFY();
}
void
_IOServiceNullNotifier::taggedRetain(const void *tag) const
{
}
void
_IOServiceNullNotifier::taggedRelease(const void *tag, const int when) const
{
}
void
_IOServiceNullNotifier::free()
{
}
void
_IOServiceNullNotifier::wait()
{
}
void
_IOServiceNullNotifier::remove()
{
}
void
_IOServiceNullNotifier::enable(bool was)
{
}
bool
_IOServiceNullNotifier::disable()
{
return false;
}
IOService *
IOResources::resources( void )
{
IOResources * inst;
inst = new IOResources;
if (inst && !inst->init()) {
inst->release();
inst = NULL;
}
return inst;
}
bool
IOResources::init( OSDictionary * dictionary )
{
if (!IOService::init()) {
return false;
}
const char *property_name;
int property_value;
pal_get_resource_property( &property_name, &property_value );
if (property_name) {
OSNumber *num;
const OSSymbol * sym;
if ((num = OSNumber::withNumber(property_value, 32)) != NULL) {
if ((sym = OSSymbol::withCString( property_name)) != NULL) {
this->setProperty( sym, num );
sym->release();
}
num->release();
}
}
return true;
}
IOReturn
IOResources::newUserClient(task_t owningTask, void * securityID,
UInt32 type, OSDictionary * properties,
IOUserClient ** handler)
{
return kIOReturnUnsupported;
}
IOWorkLoop *
IOResources::getWorkLoop() const
{
if (this == (IOResources *) gIOResources) {
return getPlatform()->getWorkLoop();
} else {
return IOService::getWorkLoop();
}
}
static bool
IOResourcesMatchPropertyTable(IOService * resources, OSDictionary * table)
{
OSObject * prop;
OSString * str;
OSSet * set;
OSIterator * iter;
OSObject * obj;
OSArray * keys;
bool ok = true;
prop = table->getObject( gIOResourceMatchKey );
str = OSDynamicCast( OSString, prop );
if (str) {
ok = (NULL != resources->getProperty( str ));
} else if ((set = OSDynamicCast( OSSet, prop))) {
iter = OSCollectionIterator::withCollection( set );
ok = (iter != NULL);
while (ok && (str = OSDynamicCast( OSString, iter->getNextObject()))) {
ok = (NULL != resources->getProperty( str ));
}
if (iter) {
iter->release();
}
} else if ((prop = table->getObject(gIOResourceMatchedKey))) {
obj = resources->copyProperty(gIOResourceMatchedKey);
keys = OSDynamicCast(OSArray, obj);
ok = false;
if (keys) {
ok = ((-1U) != keys->getNextIndexOfObject(prop, 0));
}
OSSafeReleaseNULL(obj);
}
return ok;
}
bool
IOResources::matchPropertyTable( OSDictionary * table )
{
return IOResourcesMatchPropertyTable(this, table);
}
IOService *
IOUserResources::resources( void )
{
IOUserResources * inst;
inst = OSTypeAlloc(IOUserResources);
if (inst && !inst->init()) {
inst->release();
inst = NULL;
}
return inst;
}
bool
IOUserResources::init( OSDictionary * dictionary )
{
if (!IOService::init()) {
return false;
}
return true;
}
IOReturn
IOUserResources::newUserClient(task_t owningTask, void * securityID,
UInt32 type, OSDictionary * properties,
IOUserClient ** handler)
{
return kIOReturnUnsupported;
}
IOWorkLoop *
IOUserResources::getWorkLoop() const
{
return getPlatform()->getWorkLoop();
}
bool
IOUserResources::matchPropertyTable( OSDictionary * table )
{
return IOResourcesMatchPropertyTable(this, table);
}
void
IOService::consoleLockTimer(thread_call_param_t p0, thread_call_param_t p1)
{
IOService::updateConsoleUsers(NULL, 0);
}
void
IOService::updateConsoleUsers(OSArray * consoleUsers, IOMessage systemMessage)
{
IORegistryEntry * regEntry;
OSObject * locked = kOSBooleanFalse;
uint32_t idx;
bool publish;
OSDictionary * user;
static IOMessage sSystemPower;
clock_sec_t now = 0;
clock_usec_t microsecs;
regEntry = IORegistryEntry::getRegistryRoot();
if (!gIOChosenEntry) {
gIOChosenEntry = IORegistryEntry::fromPath("/chosen", gIODTPlane);
}
IOLockLock(gIOConsoleUsersLock);
if (systemMessage) {
sSystemPower = systemMessage;
#if HIBERNATION
if (kIOMessageSystemHasPoweredOn == systemMessage) {
uint32_t lockState = IOHibernateWasScreenLocked();
switch (lockState) {
case 0:
break;
case kIOScreenLockLocked:
case kIOScreenLockFileVaultDialog:
gIOConsoleBooterLockState = kOSBooleanTrue;
break;
case kIOScreenLockNoLock:
gIOConsoleBooterLockState = NULL;
break;
case kIOScreenLockUnlocked:
default:
gIOConsoleBooterLockState = kOSBooleanFalse;
break;
}
}
#endif
}
if (consoleUsers) {
OSNumber * num = NULL;
bool loginLocked = true;
gIOConsoleLoggedIn = false;
for (idx = 0;
(user = OSDynamicCast(OSDictionary, consoleUsers->getObject(idx)));
idx++) {
gIOConsoleLoggedIn |= ((kOSBooleanTrue == user->getObject(gIOConsoleSessionOnConsoleKey))
&& (kOSBooleanTrue == user->getObject(gIOConsoleSessionLoginDoneKey)));
loginLocked &= (kOSBooleanTrue == user->getObject(gIOConsoleSessionScreenIsLockedKey));
if (!num) {
num = OSDynamicCast(OSNumber, user->getObject(gIOConsoleSessionScreenLockedTimeKey));
}
}
#if HIBERNATION
if (!loginLocked) {
gIOConsoleBooterLockState = NULL;
}
IOLog("IOConsoleUsers: time(%d) %ld->%d, lin %d, llk %d, \n",
(num != NULL), gIOConsoleLockTime, (num ? num->unsigned32BitValue() : 0),
gIOConsoleLoggedIn, loginLocked);
#endif
gIOConsoleLockTime = num ? num->unsigned32BitValue() : 0;
}
if (!gIOConsoleLoggedIn
|| (kIOMessageSystemWillSleep == sSystemPower)
|| (kIOMessageSystemPagingOff == sSystemPower)) {
locked = kOSBooleanTrue;
}
#if HIBERNATION
else if (gIOConsoleBooterLockState) {
locked = gIOConsoleBooterLockState;
}
#endif
else if (gIOConsoleLockTime) {
clock_get_calendar_microtime(&now, µsecs);
if (gIOConsoleLockTime > now) {
AbsoluteTime deadline;
clock_interval_to_deadline(gIOConsoleLockTime - now, kSecondScale, &deadline);
thread_call_enter_delayed(gIOConsoleLockCallout, deadline);
} else {
locked = kOSBooleanTrue;
}
}
publish = (consoleUsers || (locked != regEntry->getProperty(gIOConsoleLockedKey)));
if (publish) {
regEntry->setProperty(gIOConsoleLockedKey, locked);
if (consoleUsers) {
regEntry->setProperty(gIOConsoleUsersKey, consoleUsers);
}
OSIncrementAtomic( &gIOConsoleUsersSeed );
}
#if HIBERNATION
if (gIOChosenEntry) {
if (locked == kOSBooleanTrue) {
gIOScreenLockState = kIOScreenLockLocked;
} else if (gIOConsoleLockTime) {
gIOScreenLockState = kIOScreenLockUnlocked;
} else {
gIOScreenLockState = kIOScreenLockNoLock;
}
gIOChosenEntry->setProperty(kIOScreenLockStateKey, &gIOScreenLockState, sizeof(gIOScreenLockState));
IOLog("IOConsoleUsers: gIOScreenLockState %d, hs %d, bs %d, now %ld, sm 0x%x\n",
gIOScreenLockState, gIOHibernateState, (gIOConsoleBooterLockState != NULL), now, systemMessage);
}
#endif
IOLockUnlock(gIOConsoleUsersLock);
if (publish) {
publishResource( gIOConsoleUsersSeedKey, gIOConsoleUsersSeedValue );
MessageClientsContext context;
context.service = getServiceRoot();
context.type = kIOMessageConsoleSecurityChange;
context.argument = (void *) regEntry;
context.argSize = 0;
applyToInterestNotifiers(getServiceRoot(), gIOConsoleSecurityInterest,
&messageClientsApplier, &context );
}
}
IOReturn
IOResources::setProperties( OSObject * properties )
{
IOReturn err;
const OSSymbol * key;
OSDictionary * dict;
OSCollectionIterator * iter;
err = IOUserClient::clientHasPrivilege(current_task(), kIOClientPrivilegeAdministrator);
if (kIOReturnSuccess != err) {
return err;
}
dict = OSDynamicCast(OSDictionary, properties);
if (NULL == dict) {
return kIOReturnBadArgument;
}
iter = OSCollectionIterator::withCollection( dict);
if (NULL == iter) {
return kIOReturnBadArgument;
}
while ((key = OSDynamicCast(OSSymbol, iter->getNextObject()))) {
if (gIOConsoleUsersKey == key) {
do{
OSArray * consoleUsers;
consoleUsers = OSDynamicCast(OSArray, dict->getObject(key));
if (!consoleUsers) {
continue;
}
IOService::updateConsoleUsers(consoleUsers, 0);
}while (false);
}
publishResource( key, dict->getObject(key));
}
iter->release();
return kIOReturnSuccess;
}
bool
IOService::compareProperty( OSDictionary * matching,
const char * key )
{
OSObject * value;
OSObject * prop;
bool ok;
value = matching->getObject( key );
if (value) {
prop = copyProperty(key);
ok = value->isEqualTo(prop);
if (prop) {
prop->release();
}
} else {
ok = true;
}
return ok;
}
bool
IOService::compareProperty( OSDictionary * matching,
const OSString * key )
{
OSObject * value;
OSObject * prop;
bool ok;
value = matching->getObject( key );
if (value) {
prop = copyProperty(key);
ok = value->isEqualTo(prop);
if (prop) {
prop->release();
}
} else {
ok = true;
}
return ok;
}
bool
IOService::compareProperties( OSDictionary * matching,
OSCollection * keys )
{
OSCollectionIterator * iter;
const OSString * key;
bool ok = true;
if (!matching || !keys) {
return false;
}
iter = OSCollectionIterator::withCollection( keys );
if (iter) {
while (ok && (key = OSDynamicCast( OSString, iter->getNextObject()))) {
ok = compareProperty( matching, key );
}
iter->release();
}
keys->release();
return ok;
}
OSDictionary *
IOService::addLocation( OSDictionary * table )
{
OSDictionary * dict;
if (!table) {
return NULL;
}
dict = OSDictionary::withCapacity( 1 );
if (dict) {
bool ok = table->setObject( gIOLocationMatchKey, dict );
dict->release();
if (!ok) {
dict = NULL;
}
}
return dict;
}
IOService *
IOService::matchLocation( IOService * )
{
IOService * parent;
parent = getProvider();
if (parent) {
parent = parent->matchLocation( this );
}
return parent;
}
bool
IOService::matchInternal(OSDictionary * table, uint32_t options, uint32_t * did)
{
OSString * matched;
OSObject * obj;
OSString * str;
IORegistryEntry * entry;
OSNumber * num;
bool match = true;
bool changesOK = (0 != (kIOServiceChangesOK & options));
uint32_t count;
uint32_t done;
do{
count = table->getCount();
done = 0;
str = OSDynamicCast(OSString, table->getObject(gIOProviderClassKey));
if (str) {
done++;
match = ((kIOServiceClassDone & options) || (NULL != metaCast(str)));
#if MATCH_DEBUG
match = (0 != metaCast( str ));
if ((kIOServiceClassDone & options) && !match) {
panic("classDone");
}
#endif
if ((!match) || (done == count)) {
break;
}
}
obj = table->getObject( gIONameMatchKey );
if (obj) {
done++;
match = compareNames( obj, changesOK ? &matched : NULL );
if (!match) {
break;
}
if (changesOK && matched) {
table->setObject( gIONameMatchedKey, matched );
matched->release();
}
if (done == count) {
break;
}
}
str = OSDynamicCast( OSString, table->getObject( gIOLocationMatchKey ));
if (str) {
const OSSymbol * sym;
done++;
match = false;
sym = copyLocation();
if (sym) {
match = sym->isEqualTo( str );
sym->release();
}
if ((!match) || (done == count)) {
break;
}
}
obj = table->getObject( gIOPropertyMatchKey );
if (obj) {
OSDictionary * dict;
OSDictionary * nextDict;
OSIterator * iter;
done++;
match = false;
dict = dictionaryWithProperties();
if (dict) {
nextDict = OSDynamicCast( OSDictionary, obj);
if (nextDict) {
iter = NULL;
} else {
iter = OSCollectionIterator::withCollection(
OSDynamicCast(OSCollection, obj));
}
while (nextDict
|| (iter && (NULL != (nextDict = OSDynamicCast(OSDictionary,
iter->getNextObject()))))) {
match = dict->isEqualTo( nextDict, nextDict);
if (match) {
break;
}
nextDict = NULL;
}
dict->release();
if (iter) {
iter->release();
}
}
if ((!match) || (done == count)) {
break;
}
}
obj = table->getObject( gIOPropertyExistsMatchKey );
if (obj) {
OSDictionary * dict;
OSString * nextKey;
OSIterator * iter;
done++;
match = false;
dict = dictionaryWithProperties();
if (dict) {
nextKey = OSDynamicCast( OSString, obj);
if (nextKey) {
iter = NULL;
} else {
iter = OSCollectionIterator::withCollection(
OSDynamicCast(OSCollection, obj));
}
while (nextKey
|| (iter && (NULL != (nextKey = OSDynamicCast(OSString,
iter->getNextObject()))))) {
match = (NULL != dict->getObject(nextKey));
if (match) {
break;
}
nextKey = NULL;
}
dict->release();
if (iter) {
iter->release();
}
}
if ((!match) || (done == count)) {
break;
}
}
str = OSDynamicCast( OSString, table->getObject( gIOPathMatchKey ));
if (str) {
done++;
entry = IORegistryEntry::fromPath( str->getCStringNoCopy());
match = (this == entry);
if (entry) {
entry->release();
}
if ((!match) || (done == count)) {
break;
}
}
num = OSDynamicCast( OSNumber, table->getObject( gIORegistryEntryIDKey ));
if (num) {
done++;
match = (getRegistryEntryID() == num->unsigned64BitValue());
if ((!match) || (done == count)) {
break;
}
}
num = OSDynamicCast( OSNumber, table->getObject( gIOMatchedServiceCountKey ));
if (num) {
OSIterator * iter;
IOService * service = NULL;
UInt32 serviceCount = 0;
done++;
iter = getClientIterator();
if (iter) {
while ((service = (IOService *) iter->getNextObject())) {
if (kIOServiceInactiveState & service->__state[0]) {
continue;
}
if (NULL == service->getProperty( gIOMatchCategoryKey )) {
continue;
}
++serviceCount;
}
iter->release();
}
match = (serviceCount == num->unsigned32BitValue());
if ((!match) || (done == count)) {
break;
}
}
#define propMatch(key) \
obj = table->getObject(key); \
if (obj) \
{ \
OSObject * prop; \
done++; \
prop = copyProperty(key); \
match = obj->isEqualTo(prop); \
if (prop) prop->release(); \
if ((!match) || (done == count)) break; \
}
propMatch(gIOBSDNameKey)
propMatch(gIOBSDMajorKey)
propMatch(gIOBSDMinorKey)
propMatch(gIOBSDUnitKey)
#undef propMatch
}while (false);
if (did) {
*did = done;
}
return match;
}
bool
IOService::passiveMatch( OSDictionary * table, bool changesOK )
{
return matchPassive(table, changesOK ? kIOServiceChangesOK : 0);
}
bool
IOService::matchPassive(OSDictionary * table, uint32_t options)
{
IOService * where;
OSDictionary * nextTable;
SInt32 score;
OSNumber * newPri;
bool match = true;
bool matchParent = false;
uint32_t count;
uint32_t done;
assert( table );
#if !CONFIG_EMBEDDED
OSArray* aliasServiceRegIds = NULL;
IOService* foundAlternateService = NULL;
#endif
#if MATCH_DEBUG
OSDictionary * root = table;
#endif
where = this;
do{
do{
count = table->getCount();
if (!(kIOServiceInternalDone & options)) {
match = where->matchInternal(table, options, &done);
if ((!match) || (done == count)) {
break;
}
}
score = IOServiceObjectOrder( table, (void *) gIOProbeScoreKey);
match = where->matchPropertyTable( table, &score );
if (!match) {
#if IOMATCHDEBUG
if (kIOLogMatch & getDebugFlags( table )) {
LOG("%s: family specific matching fails\n", where->getName());
}
#endif
break;
}
if (kIOServiceChangesOK & options) {
newPri = OSNumber::withNumber( score, 32 );
if (newPri) {
table->setObject( gIOProbeScoreKey, newPri );
newPri->release();
}
}
options = 0;
matchParent = false;
nextTable = OSDynamicCast(OSDictionary,
table->getObject( gIOParentMatchKey ));
if (nextTable) {
match = false;
matchParent = true;
table = nextTable;
break;
}
table = OSDynamicCast(OSDictionary,
table->getObject( gIOLocationMatchKey ));
if (table) {
match = false;
where = where->getProvider();
if (where && (where = where->matchLocation(where))) {
continue;
}
}
break;
}while (true);
if (match == true) {
break;
}
if (matchParent == true) {
#if !CONFIG_EMBEDDED
OSObject * prop = where->copyProperty(gIOServiceLegacyMatchingRegistryIDKey);
OSNumber * alternateRegistryID = OSDynamicCast(OSNumber, prop);
if (alternateRegistryID != NULL) {
if (aliasServiceRegIds == NULL) {
aliasServiceRegIds = OSArray::withCapacity(sizeof(alternateRegistryID));
}
aliasServiceRegIds->setObject(alternateRegistryID);
}
OSSafeReleaseNULL(prop);
#endif
} else {
break;
}
where = where->getProvider();
#if !CONFIG_EMBEDDED
if (where == NULL) {
if (aliasServiceRegIds != NULL) {
unsigned int numAliasedServices = aliasServiceRegIds->getCount();
if (numAliasedServices != 0) {
OSNumber* alternateRegistryID = OSDynamicCast(OSNumber, aliasServiceRegIds->getObject(numAliasedServices - 1));
if (alternateRegistryID != NULL) {
OSDictionary* alternateMatchingDict = IOService::registryEntryIDMatching(alternateRegistryID->unsigned64BitValue());
aliasServiceRegIds->removeObject(numAliasedServices - 1);
if (alternateMatchingDict != NULL) {
OSSafeReleaseNULL(foundAlternateService);
foundAlternateService = IOService::copyMatchingService(alternateMatchingDict);
alternateMatchingDict->release();
if (foundAlternateService != NULL) {
where = foundAlternateService;
}
}
}
}
}
}
#endif
}while (where != NULL);
#if !CONFIG_EMBEDDED
OSSafeReleaseNULL(foundAlternateService);
OSSafeReleaseNULL(aliasServiceRegIds);
#endif
#if MATCH_DEBUG
if (where != this) {
OSSerialize * s = OSSerialize::withCapacity(128);
root->serialize(s);
kprintf("parent match 0x%llx, %d,\n%s\n", getRegistryEntryID(), match, s->text());
s->release();
}
#endif
return match;
}
IOReturn
IOService::newUserClient( task_t owningTask, void * securityID,
UInt32 type, OSDictionary * properties,
IOUserClient ** handler )
{
const OSSymbol *userClientClass = NULL;
IOUserClient *client;
OSObject *prop;
OSObject *temp;
if (reserved && reserved->uvars && reserved->uvars->userServer) {
return reserved->uvars->userServer->serviceNewUserClient(this, owningTask, securityID, type, properties, handler);
}
if (kIOReturnSuccess == newUserClient( owningTask, securityID, type, handler )) {
return kIOReturnSuccess;
}
prop = copyProperty(gIOUserClientClassKey);
if (prop) {
if (OSDynamicCast(OSSymbol, prop)) {
userClientClass = (const OSSymbol *) prop;
} else if (OSDynamicCast(OSString, prop)) {
userClientClass = OSSymbol::withString((OSString *) prop);
if (userClientClass) {
setProperty(gIOUserClientClassKey,
(OSObject *) userClientClass);
}
}
}
if (!userClientClass) {
OSSafeReleaseNULL(prop);
return kIOReturnUnsupported;
}
temp = OSMetaClass::allocClassWithName(userClientClass);
OSSafeReleaseNULL(prop);
if (!temp) {
return kIOReturnNoMemory;
}
if (OSDynamicCast(IOUserClient, temp)) {
client = (IOUserClient *) temp;
} else {
temp->release();
return kIOReturnUnsupported;
}
if (!client->initWithTask(owningTask, securityID, type, properties)) {
client->release();
return kIOReturnBadArgument;
}
if (!client->attach(this)) {
client->release();
return kIOReturnUnsupported;
}
if (!client->start(this)) {
client->detach(this);
client->release();
return kIOReturnUnsupported;
}
*handler = client;
return kIOReturnSuccess;
}
IOReturn
IOService::newUserClient( task_t owningTask, void * securityID,
UInt32 type, IOUserClient ** handler )
{
return kIOReturnUnsupported;
}
IOReturn
IOService::requestProbe( IOOptionBits options )
{
return kIOReturnUnsupported;
}
const char *
IOService::stringFromReturn( IOReturn rtn )
{
static const IONamedValue IOReturn_values[] = {
{kIOReturnSuccess, "success" },
{kIOReturnError, "general error" },
{kIOReturnNoMemory, "memory allocation error" },
{kIOReturnNoResources, "resource shortage" },
{kIOReturnIPCError, "Mach IPC failure" },
{kIOReturnNoDevice, "no such device" },
{kIOReturnNotPrivileged, "privilege violation" },
{kIOReturnBadArgument, "invalid argument" },
{kIOReturnLockedRead, "device is read locked" },
{kIOReturnLockedWrite, "device is write locked" },
{kIOReturnExclusiveAccess, "device is exclusive access" },
{kIOReturnBadMessageID, "bad IPC message ID" },
{kIOReturnUnsupported, "unsupported function" },
{kIOReturnVMError, "virtual memory error" },
{kIOReturnInternalError, "internal driver error" },
{kIOReturnIOError, "I/O error" },
{kIOReturnCannotLock, "cannot acquire lock" },
{kIOReturnNotOpen, "device is not open" },
{kIOReturnNotReadable, "device is not readable" },
{kIOReturnNotWritable, "device is not writeable" },
{kIOReturnNotAligned, "alignment error" },
{kIOReturnBadMedia, "media error" },
{kIOReturnStillOpen, "device is still open" },
{kIOReturnRLDError, "rld failure" },
{kIOReturnDMAError, "DMA failure" },
{kIOReturnBusy, "device is busy" },
{kIOReturnTimeout, "I/O timeout" },
{kIOReturnOffline, "device is offline" },
{kIOReturnNotReady, "device is not ready" },
{kIOReturnNotAttached, "device/channel is not attached" },
{kIOReturnNoChannels, "no DMA channels available" },
{kIOReturnNoSpace, "no space for data" },
{kIOReturnPortExists, "device port already exists" },
{kIOReturnCannotWire, "cannot wire physical memory" },
{kIOReturnNoInterrupt, "no interrupt attached" },
{kIOReturnNoFrames, "no DMA frames enqueued" },
{kIOReturnMessageTooLarge, "message is too large" },
{kIOReturnNotPermitted, "operation is not permitted" },
{kIOReturnNoPower, "device is without power" },
{kIOReturnNoMedia, "media is not present" },
{kIOReturnUnformattedMedia, "media is not formatted" },
{kIOReturnUnsupportedMode, "unsupported mode" },
{kIOReturnUnderrun, "data underrun" },
{kIOReturnOverrun, "data overrun" },
{kIOReturnDeviceError, "device error" },
{kIOReturnNoCompletion, "no completion routine" },
{kIOReturnAborted, "operation was aborted" },
{kIOReturnNoBandwidth, "bus bandwidth would be exceeded" },
{kIOReturnNotResponding, "device is not responding" },
{kIOReturnInvalid, "unanticipated driver error" },
{0, NULL }
};
return IOFindNameForValue(rtn, IOReturn_values);
}
int
IOService::errnoFromReturn( IOReturn rtn )
{
if (unix_err(err_get_code(rtn)) == rtn) {
return err_get_code(rtn);
}
switch (rtn) {
case kIOReturnSuccess:
return 0;
case kIOReturnNoMemory:
return ENOMEM;
case kIOReturnNoDevice:
return ENXIO;
case kIOReturnVMError:
return EFAULT;
case kIOReturnNotPermitted:
return EPERM;
case kIOReturnNotPrivileged:
return EACCES;
case kIOReturnIOError:
return EIO;
case kIOReturnNotWritable:
return EROFS;
case kIOReturnBadArgument:
return EINVAL;
case kIOReturnUnsupported:
return ENOTSUP;
case kIOReturnBusy:
return EBUSY;
case kIOReturnNoPower:
return EPWROFF;
case kIOReturnDeviceError:
return EDEVERR;
case kIOReturnTimeout:
return ETIMEDOUT;
case kIOReturnMessageTooLarge:
return EMSGSIZE;
case kIOReturnNoSpace:
return ENOSPC;
case kIOReturnCannotLock:
return ENOLCK;
case kIOReturnBadMessageID:
case kIOReturnNoCompletion:
case kIOReturnNotAligned:
return EINVAL;
case kIOReturnNotReady:
return EBUSY;
case kIOReturnRLDError:
return EBADMACHO;
case kIOReturnPortExists:
case kIOReturnStillOpen:
return EEXIST;
case kIOReturnExclusiveAccess:
case kIOReturnLockedRead:
case kIOReturnLockedWrite:
case kIOReturnNotOpen:
case kIOReturnNotReadable:
return EACCES;
case kIOReturnCannotWire:
case kIOReturnNoResources:
return ENOMEM;
case kIOReturnAborted:
case kIOReturnOffline:
case kIOReturnNotResponding:
return EBUSY;
case kIOReturnBadMedia:
case kIOReturnNoMedia:
case kIOReturnNotAttached:
case kIOReturnUnformattedMedia:
return ENXIO; case kIOReturnDMAError:
case kIOReturnOverrun:
case kIOReturnUnderrun:
return EIO; case kIOReturnNoBandwidth:
case kIOReturnNoChannels:
case kIOReturnNoFrames:
case kIOReturnNoInterrupt:
return EIO; case kIOReturnError:
case kIOReturnInternalError:
case kIOReturnInvalid:
return EIO; case kIOReturnIPCError:
return EIO; default:
return EIO; }
}
IOReturn
IOService::message( UInt32 type, IOService * provider,
void * argument )
{
return kIOReturnUnsupported;
}
IOItemCount
IOService::getDeviceMemoryCount( void )
{
OSArray * array;
IOItemCount count;
array = OSDynamicCast( OSArray, getProperty( gIODeviceMemoryKey));
if (array) {
count = array->getCount();
} else {
count = 0;
}
return count;
}
IODeviceMemory *
IOService::getDeviceMemoryWithIndex( unsigned int index )
{
OSArray * array;
IODeviceMemory * range;
array = OSDynamicCast( OSArray, getProperty( gIODeviceMemoryKey));
if (array) {
range = (IODeviceMemory *) array->getObject( index );
} else {
range = NULL;
}
return range;
}
IOMemoryMap *
IOService::mapDeviceMemoryWithIndex( unsigned int index,
IOOptionBits options )
{
IODeviceMemory * range;
IOMemoryMap * map;
range = getDeviceMemoryWithIndex( index );
if (range) {
map = range->map( options );
} else {
map = NULL;
}
return map;
}
OSArray *
IOService::getDeviceMemory( void )
{
return OSDynamicCast( OSArray, getProperty( gIODeviceMemoryKey));
}
void
IOService::setDeviceMemory( OSArray * array )
{
setProperty( gIODeviceMemoryKey, array);
}
void
IOService::
setCPUSnoopDelay(UInt32 __unused ns)
{
#if defined(__i386__) || defined(__x86_64__)
ml_set_maxsnoop(ns);
#endif
}
UInt32
IOService::
getCPUSnoopDelay()
{
#if defined(__i386__) || defined(__x86_64__)
return ml_get_maxsnoop();
#else
return 0;
#endif
}
#if defined(__i386__) || defined(__x86_64__)
static void
requireMaxCpuDelay(IOService * service, UInt32 ns, UInt32 delayType)
{
static const UInt kNoReplace = -1U; UInt replace = kNoReplace;
bool setCpuDelay = false;
IORecursiveLockLock(sCpuDelayLock);
UInt count = sCpuDelayData->getLength() / sizeof(CpuDelayEntry);
CpuDelayEntry *entries = (CpuDelayEntry *) sCpuDelayData->getBytesNoCopy();
IOService * holder = NULL;
if (ns) {
const CpuDelayEntry ne = {service, ns, delayType};
holder = service;
for (UInt i = 0; i < count; i++) {
IOService *thisService = entries[i].fService;
bool sameType = (delayType == entries[i].fDelayType);
if ((service == thisService) && sameType) {
replace = i;
} else if (!thisService) {
if (kNoReplace == replace) {
replace = i;
}
} else if (sameType) {
const UInt32 thisMax = entries[i].fMaxDelay;
if (thisMax < ns) {
ns = thisMax;
holder = thisService;
}
}
}
setCpuDelay = true;
if (kNoReplace == replace) {
sCpuDelayData->appendBytes(&ne, sizeof(ne));
} else {
entries[replace] = ne;
}
} else {
ns = -1U;
for (UInt i = 0; i < count; i++) {
IOService *thisService = entries[i].fService;
if (thisService && (delayType == entries[i].fDelayType)) {
UInt32 thisMax = entries[i].fMaxDelay;
if (service == thisService) {
replace = i;
} else if (thisMax < ns) {
ns = thisMax;
holder = thisService;
}
}
}
if (kNoReplace != replace) {
entries[replace].fService = NULL; setCpuDelay = true;
}
}
if (setCpuDelay) {
if (holder && debug_boot_arg) {
strlcpy(sCPULatencyHolderName[delayType], holder->getName(), sizeof(sCPULatencyHolderName[delayType]));
}
if (delayType == kCpuDelayBusStall) {
ml_set_maxbusdelay(ns);
} else if (delayType == kCpuDelayInterrupt) {
ml_set_maxintdelay(ns);
}
sCPULatencyHolder[delayType]->setValue(holder ? holder->getRegistryEntryID() : 0);
sCPULatencySet[delayType]->setValue(ns);
OSArray * handlers = sCpuLatencyHandlers[delayType];
IOService * target;
if (handlers) {
for (unsigned int idx = 0;
(target = (IOService *) handlers->getObject(idx));
idx++) {
target->callPlatformFunction(sCPULatencyFunctionName[delayType], false,
(void *) (uintptr_t) ns, holder,
NULL, NULL);
}
}
}
IORecursiveLockUnlock(sCpuDelayLock);
}
static IOReturn
setLatencyHandler(UInt32 delayType, IOService * target, bool enable)
{
IOReturn result = kIOReturnNotFound;
OSArray * array;
unsigned int idx;
IORecursiveLockLock(sCpuDelayLock);
do{
if (enable && !sCpuLatencyHandlers[delayType]) {
sCpuLatencyHandlers[delayType] = OSArray::withCapacity(4);
}
array = sCpuLatencyHandlers[delayType];
if (!array) {
break;
}
idx = array->getNextIndexOfObject(target, 0);
if (!enable) {
if (-1U != idx) {
array->removeObject(idx);
result = kIOReturnSuccess;
}
} else {
if (-1U != idx) {
result = kIOReturnExclusiveAccess;
break;
}
array->setObject(target);
UInt count = sCpuDelayData->getLength() / sizeof(CpuDelayEntry);
CpuDelayEntry *entries = (CpuDelayEntry *) sCpuDelayData->getBytesNoCopy();
UInt32 ns = -1U; IOService * holder = NULL;
for (UInt i = 0; i < count; i++) {
if (entries[i].fService
&& (delayType == entries[i].fDelayType)
&& (entries[i].fMaxDelay < ns)) {
ns = entries[i].fMaxDelay;
holder = entries[i].fService;
}
}
target->callPlatformFunction(sCPULatencyFunctionName[delayType], false,
(void *) (uintptr_t) ns, holder,
NULL, NULL);
result = kIOReturnSuccess;
}
}while (false);
IORecursiveLockUnlock(sCpuDelayLock);
return result;
}
#endif
void
IOService::
requireMaxBusStall(UInt32 __unused ns)
{
#if defined(__i386__) || defined(__x86_64__)
requireMaxCpuDelay(this, ns, kCpuDelayBusStall);
#endif
}
void
IOService::
requireMaxInterruptDelay(uint32_t __unused ns)
{
#if defined(__i386__) || defined(__x86_64__)
requireMaxCpuDelay(this, ns, kCpuDelayInterrupt);
#endif
}
IOReturn
IOService::resolveInterrupt(IOService *nub, int source)
{
IOInterruptController *interruptController;
OSArray *array;
OSData *data;
OSSymbol *interruptControllerName;
long numSources;
IOInterruptSource *interruptSources;
array = OSDynamicCast(OSArray, nub->getProperty(gIOInterruptControllersKey));
if (array == NULL) {
return kIOReturnNoResources;
}
if (nub->_interruptSources == NULL) {
numSources = array->getCount();
interruptSources = (IOInterruptSource *)IOMalloc(
numSources * sizeofAllIOInterruptSource);
if (interruptSources == NULL) {
return kIOReturnNoMemory;
}
bzero(interruptSources, numSources * sizeofAllIOInterruptSource);
nub->_numInterruptSources = numSources;
nub->_interruptSources = interruptSources;
return kIOReturnSuccess;
}
interruptControllerName = OSDynamicCast(OSSymbol, array->getObject(source));
if (interruptControllerName == NULL) {
return kIOReturnNoResources;
}
interruptController = getPlatform()->lookUpInterruptController(interruptControllerName);
if (interruptController == NULL) {
return kIOReturnNoResources;
}
array = OSDynamicCast(OSArray, nub->getProperty(gIOInterruptSpecifiersKey));
if (array == NULL) {
return kIOReturnNoResources;
}
data = OSDynamicCast(OSData, array->getObject(source));
if (data == NULL) {
return kIOReturnNoResources;
}
interruptSources = nub->_interruptSources;
interruptSources[source].interruptController = interruptController;
interruptSources[source].vectorData = data;
return kIOReturnSuccess;
}
IOReturn
IOService::lookupInterrupt(int source, bool resolve, IOInterruptController **interruptController)
{
IOReturn ret;
if (_interruptSources == NULL) {
ret = resolveInterrupt(this, source);
if (ret != kIOReturnSuccess) {
return ret;
}
}
if ((source < 0) || (source >= _numInterruptSources)) {
return kIOReturnNoInterrupt;
}
*interruptController = _interruptSources[source].interruptController;
if (*interruptController == NULL) {
if (!resolve) {
return kIOReturnNoInterrupt;
}
ret = resolveInterrupt(this, source);
if (ret != kIOReturnSuccess) {
return ret;
}
*interruptController = _interruptSources[source].interruptController;
}
return kIOReturnSuccess;
}
IOReturn
IOService::registerInterrupt(int source, OSObject *target,
IOInterruptAction handler,
void *refCon)
{
IOInterruptController *interruptController;
IOReturn ret;
ret = lookupInterrupt(source, true, &interruptController);
if (ret != kIOReturnSuccess) {
return ret;
}
return interruptController->registerInterrupt(this, source, target,
(IOInterruptHandler)handler,
refCon);
}
static void
IOServiceInterruptActionToBlock( OSObject * target, void * refCon,
IOService * nub, int source )
{
((IOInterruptActionBlock)(refCon))(nub, source);
}
IOReturn
IOService::registerInterruptBlock(int source, OSObject *target,
IOInterruptActionBlock handler)
{
IOReturn ret;
void * block;
block = Block_copy(handler);
if (!block) {
return kIOReturnNoMemory;
}
ret = registerInterrupt(source, target, &IOServiceInterruptActionToBlock, block);
if (kIOReturnSuccess != ret) {
Block_release(block);
return ret;
}
_interruptSourcesPrivate(this)[source].vectorBlock = block;
return ret;
}
IOReturn
IOService::unregisterInterrupt(int source)
{
IOReturn ret;
IOInterruptController *interruptController;
void *block;
ret = lookupInterrupt(source, false, &interruptController);
if (ret != kIOReturnSuccess) {
return ret;
}
block = _interruptSourcesPrivate(this)[source].vectorBlock;
ret = interruptController->unregisterInterrupt(this, source);
if ((kIOReturnSuccess == ret) && (block = _interruptSourcesPrivate(this)[source].vectorBlock)) {
_interruptSourcesPrivate(this)[source].vectorBlock = NULL;
Block_release(block);
}
return ret;
}
IOReturn
IOService::addInterruptStatistics(IOInterruptAccountingData * statistics, int source)
{
IOReportLegend * legend = NULL;
IOInterruptAccountingData * oldValue = NULL;
IOInterruptAccountingReporter * newArray = NULL;
char subgroupName[64];
int newArraySize = 0;
int i = 0;
if (source < 0) {
return kIOReturnBadArgument;
}
if (source > IA_INDEX_MAX) {
panic("addInterruptStatistics called for an excessively large index (%d)", source);
}
IOLockLock(reserved->interruptStatisticsLock);
if (!reserved->interruptStatisticsArray) {
reserved->interruptStatisticsArray = IONew(IOInterruptAccountingReporter, 1);
assert(reserved->interruptStatisticsArray);
reserved->interruptStatisticsArrayCount = 1;
bzero(reserved->interruptStatisticsArray, sizeof(*reserved->interruptStatisticsArray));
}
if (source >= reserved->interruptStatisticsArrayCount) {
newArraySize = (reserved->interruptStatisticsArrayCount << 1);
while (newArraySize <= source) {
newArraySize = (newArraySize << 1);
}
newArray = IONew(IOInterruptAccountingReporter, newArraySize);
assert(newArray);
bzero(newArray, newArraySize * sizeof(*newArray));
memcpy(newArray, reserved->interruptStatisticsArray, reserved->interruptStatisticsArrayCount * sizeof(*newArray));
IODelete(reserved->interruptStatisticsArray, IOInterruptAccountingReporter, reserved->interruptStatisticsArrayCount);
reserved->interruptStatisticsArray = newArray;
reserved->interruptStatisticsArrayCount = newArraySize;
}
if (!reserved->interruptStatisticsArray[source].reporter) {
reserved->interruptStatisticsArray[source].reporter = IOSimpleReporter::with(this, kIOReportCategoryPower, kIOReportUnitNone);
for (i = 0; i < IA_NUM_INTERRUPT_ACCOUNTING_STATISTICS; i++) {
if (IA_GET_STATISTIC_ENABLED(i)) {
reserved->interruptStatisticsArray[source].reporter->addChannel(IA_GET_CHANNEL_ID(source, i), kInterruptAccountingStatisticNameArray[i]);
}
}
OSObject * prop = copyProperty(kIOReportLegendKey);
legend = IOReportLegend::with(OSDynamicCast(OSArray, prop));
OSSafeReleaseNULL(prop);
snprintf(subgroupName, sizeof(subgroupName), "%s %d", getName(), source);
subgroupName[sizeof(subgroupName) - 1] = 0;
legend->addReporterLegend(reserved->interruptStatisticsArray[source].reporter, kInterruptAccountingGroupName, subgroupName);
setProperty(kIOReportLegendKey, legend->getLegend());
legend->release();
setProperty(kIOReportLegendPublicKey, true);
}
oldValue = reserved->interruptStatisticsArray[source].statistics;
if (oldValue) {
panic("addInterruptStatistics call for index %d would have clobbered existing statistics", source);
}
reserved->interruptStatisticsArray[source].statistics = statistics;
interruptAccountingDataInheritChannels(reserved->interruptStatisticsArray[source].statistics, reserved->interruptStatisticsArray[source].reporter);
IOLockUnlock(reserved->interruptStatisticsLock);
return kIOReturnSuccess;
}
IOReturn
IOService::removeInterruptStatistics(int source)
{
IOInterruptAccountingData * value = NULL;
if (source < 0) {
return kIOReturnBadArgument;
}
IOLockLock(reserved->interruptStatisticsLock);
if (source >= reserved->interruptStatisticsArrayCount) {
panic("removeInterruptStatistics called for index %d, which was never registered", source);
}
assert(reserved->interruptStatisticsArray);
value = reserved->interruptStatisticsArray[source].statistics;
if (!value) {
panic("removeInterruptStatistics called for empty index %d", source);
}
interruptAccountingDataUpdateChannels(reserved->interruptStatisticsArray[source].statistics, reserved->interruptStatisticsArray[source].reporter);
reserved->interruptStatisticsArray[source].statistics = NULL;
IOLockUnlock(reserved->interruptStatisticsLock);
return kIOReturnSuccess;
}
IOReturn
IOService::getInterruptType(int source, int *interruptType)
{
IOInterruptController *interruptController;
IOReturn ret;
ret = lookupInterrupt(source, true, &interruptController);
if (ret != kIOReturnSuccess) {
return ret;
}
return interruptController->getInterruptType(this, source, interruptType);
}
IOReturn
IOService::enableInterrupt(int source)
{
IOInterruptController *interruptController;
IOReturn ret;
ret = lookupInterrupt(source, false, &interruptController);
if (ret != kIOReturnSuccess) {
return ret;
}
return interruptController->enableInterrupt(this, source);
}
IOReturn
IOService::disableInterrupt(int source)
{
IOInterruptController *interruptController;
IOReturn ret;
ret = lookupInterrupt(source, false, &interruptController);
if (ret != kIOReturnSuccess) {
return ret;
}
return interruptController->disableInterrupt(this, source);
}
IOReturn
IOService::causeInterrupt(int source)
{
IOInterruptController *interruptController;
IOReturn ret;
ret = lookupInterrupt(source, false, &interruptController);
if (ret != kIOReturnSuccess) {
return ret;
}
return interruptController->causeInterrupt(this, source);
}
IOReturn
IOService::configureReport(IOReportChannelList *channelList,
IOReportConfigureAction action,
void *result,
void *destination)
{
unsigned cnt;
for (cnt = 0; cnt < channelList->nchannels; cnt++) {
if (channelList->channels[cnt].channel_id == kPMPowerStatesChID) {
if (pwrMgt) {
configurePowerStatesReport(action, result);
} else {
return kIOReturnUnsupported;
}
} else if (channelList->channels[cnt].channel_id == kPMCurrStateChID) {
if (pwrMgt) {
configureSimplePowerReport(action, result);
} else {
return kIOReturnUnsupported;
}
}
}
IOLockLock(reserved->interruptStatisticsLock);
for (cnt = 0; cnt < (unsigned) reserved->interruptStatisticsArrayCount; cnt++) {
if (reserved->interruptStatisticsArray[cnt].reporter) {
if (reserved->interruptStatisticsArray[cnt].statistics) {
interruptAccountingDataUpdateChannels(reserved->interruptStatisticsArray[cnt].statistics, reserved->interruptStatisticsArray[cnt].reporter);
}
reserved->interruptStatisticsArray[cnt].reporter->configureReport(channelList, action, result, destination);
}
}
IOLockUnlock(reserved->interruptStatisticsLock);
return kIOReturnSuccess;
}
IOReturn
IOService::updateReport(IOReportChannelList *channelList,
IOReportUpdateAction action,
void *result,
void *destination)
{
unsigned cnt;
for (cnt = 0; cnt < channelList->nchannels; cnt++) {
if (channelList->channels[cnt].channel_id == kPMPowerStatesChID) {
if (pwrMgt) {
updatePowerStatesReport(action, result, destination);
} else {
return kIOReturnUnsupported;
}
} else if (channelList->channels[cnt].channel_id == kPMCurrStateChID) {
if (pwrMgt) {
updateSimplePowerReport(action, result, destination);
} else {
return kIOReturnUnsupported;
}
}
}
IOLockLock(reserved->interruptStatisticsLock);
for (cnt = 0; cnt < (unsigned) reserved->interruptStatisticsArrayCount; cnt++) {
if (reserved->interruptStatisticsArray[cnt].reporter) {
if (reserved->interruptStatisticsArray[cnt].statistics) {
interruptAccountingDataUpdateChannels(reserved->interruptStatisticsArray[cnt].statistics, reserved->interruptStatisticsArray[cnt].reporter);
}
reserved->interruptStatisticsArray[cnt].reporter->updateReport(channelList, action, result, destination);
}
}
IOLockUnlock(reserved->interruptStatisticsLock);
return kIOReturnSuccess;
}
uint64_t
IOService::getAuthorizationID( void )
{
return reserved->authorizationID;
}
IOReturn
IOService::setAuthorizationID( uint64_t authorizationID )
{
OSObject * entitlement;
IOReturn status;
entitlement = IOUserClient::copyClientEntitlement( current_task(), "com.apple.private.iokit.IOServiceSetAuthorizationID" );
if (entitlement) {
if (entitlement == kOSBooleanTrue) {
reserved->authorizationID = authorizationID;
status = kIOReturnSuccess;
} else {
status = kIOReturnNotPrivileged;
}
entitlement->release();
} else {
status = kIOReturnNotPrivileged;
}
return status;
}
#if __LP64__
OSMetaClassDefineReservedUsed(IOService, 0);
OSMetaClassDefineReservedUsed(IOService, 1);
OSMetaClassDefineReservedUnused(IOService, 2);
OSMetaClassDefineReservedUnused(IOService, 3);
OSMetaClassDefineReservedUnused(IOService, 4);
OSMetaClassDefineReservedUnused(IOService, 5);
OSMetaClassDefineReservedUnused(IOService, 6);
OSMetaClassDefineReservedUnused(IOService, 7);
#else
OSMetaClassDefineReservedUsed(IOService, 0);
OSMetaClassDefineReservedUsed(IOService, 1);
OSMetaClassDefineReservedUsed(IOService, 2);
OSMetaClassDefineReservedUsed(IOService, 3);
OSMetaClassDefineReservedUsed(IOService, 4);
OSMetaClassDefineReservedUsed(IOService, 5);
OSMetaClassDefineReservedUsed(IOService, 6);
OSMetaClassDefineReservedUsed(IOService, 7);
#endif
OSMetaClassDefineReservedUnused(IOService, 8);
OSMetaClassDefineReservedUnused(IOService, 9);
OSMetaClassDefineReservedUnused(IOService, 10);
OSMetaClassDefineReservedUnused(IOService, 11);
OSMetaClassDefineReservedUnused(IOService, 12);
OSMetaClassDefineReservedUnused(IOService, 13);
OSMetaClassDefineReservedUnused(IOService, 14);
OSMetaClassDefineReservedUnused(IOService, 15);
OSMetaClassDefineReservedUnused(IOService, 16);
OSMetaClassDefineReservedUnused(IOService, 17);
OSMetaClassDefineReservedUnused(IOService, 18);
OSMetaClassDefineReservedUnused(IOService, 19);
OSMetaClassDefineReservedUnused(IOService, 20);
OSMetaClassDefineReservedUnused(IOService, 21);
OSMetaClassDefineReservedUnused(IOService, 22);
OSMetaClassDefineReservedUnused(IOService, 23);
OSMetaClassDefineReservedUnused(IOService, 24);
OSMetaClassDefineReservedUnused(IOService, 25);
OSMetaClassDefineReservedUnused(IOService, 26);
OSMetaClassDefineReservedUnused(IOService, 27);
OSMetaClassDefineReservedUnused(IOService, 28);
OSMetaClassDefineReservedUnused(IOService, 29);
OSMetaClassDefineReservedUnused(IOService, 30);
OSMetaClassDefineReservedUnused(IOService, 31);
OSMetaClassDefineReservedUnused(IOService, 32);
OSMetaClassDefineReservedUnused(IOService, 33);
OSMetaClassDefineReservedUnused(IOService, 34);
OSMetaClassDefineReservedUnused(IOService, 35);
OSMetaClassDefineReservedUnused(IOService, 36);
OSMetaClassDefineReservedUnused(IOService, 37);
OSMetaClassDefineReservedUnused(IOService, 38);
OSMetaClassDefineReservedUnused(IOService, 39);
OSMetaClassDefineReservedUnused(IOService, 40);
OSMetaClassDefineReservedUnused(IOService, 41);
OSMetaClassDefineReservedUnused(IOService, 42);
OSMetaClassDefineReservedUnused(IOService, 43);
OSMetaClassDefineReservedUnused(IOService, 44);
OSMetaClassDefineReservedUnused(IOService, 45);
OSMetaClassDefineReservedUnused(IOService, 46);
OSMetaClassDefineReservedUnused(IOService, 47);