IOBlockStorageDevice.cpp [plain text]
#include <IOKit/IOLib.h>
#include <IOKit/IOUserClient.h>
#include <IOKit/storage/IOBlockStorageDevice.h>
#define super IOService
OSDefineMetaClassAndAbstractStructors(IOBlockStorageDevice,IOService)
bool
IOBlockStorageDevice::init(OSDictionary * properties)
{
bool result;
result = super::init(properties);
if (result) {
result = setProperty(kIOBlockStorageDeviceTypeKey,
kIOBlockStorageDeviceTypeGeneric);
}
return(result);
}
OSObject *
IOBlockStorageDevice::getProperty(const OSSymbol * key) const
{
OSObject *obj = NULL;
if (key->isEqualTo(kIOBlockStorageDeviceWriteCacheStateKey)) {
bool enabled;
IOReturn result;
result = ((IOBlockStorageDevice *)this)->getWriteCacheState(&enabled);
if (result == kIOReturnSuccess) {
obj = (enabled) ? kOSBooleanTrue : kOSBooleanFalse;
}
} else {
obj = super::getProperty(key);
}
return(obj);
}
IOReturn
IOBlockStorageDevice::setProperties(OSObject * properties)
{
OSDictionary *dict;
OSObject *obj;
IOReturn result;
result = super::setProperties(properties);
if (result != kIOReturnUnsupported) {
return(result);
}
result = IOUserClient::clientHasPrivilege(current_task(),kIOClientPrivilegeAdministrator);
if (result != kIOReturnSuccess) {
return(result);
}
dict = OSDynamicCast(OSDictionary,properties);
if (!dict) {
return(kIOReturnBadArgument);
}
obj = dict->getObject(kIOBlockStorageDeviceWriteCacheStateKey);
if (obj) {
if (OSDynamicCast(OSBoolean,obj)) {
result = setWriteCacheState((obj == kOSBooleanTrue));
} else {
result = kIOReturnBadArgument;
}
return(result);
}
return(kIOReturnUnsupported);
}
IOReturn
IOBlockStorageDevice::getWriteCacheState(bool *enabled)
{
return(kIOReturnUnsupported);
}
IOReturn
IOBlockStorageDevice::setWriteCacheState(bool enabled)
{
return(kIOReturnUnsupported);
}
#ifdef __x86_64__
IOReturn
IOBlockStorageDevice::doLockUnlockMedia(bool doLock)
{
return(kIOReturnUnsupported);
}
IOReturn
IOBlockStorageDevice::reportLockability(bool *isLockable)
{
return(kIOReturnUnsupported);
}
IOReturn
IOBlockStorageDevice::reportPollRequirements(bool *pollRequired,
bool *pollIsExpensive)
{
return(kIOReturnUnsupported);
}
#endif
IOReturn
IOBlockStorageDevice::requestIdle(void)
{
return(kIOReturnUnsupported);
}
#ifdef __x86_64__
IOReturn
IOBlockStorageDevice::doDiscard(UInt64 block, UInt64 nblks)
{
return(kIOReturnUnsupported);
}
#endif
IOReturn
IOBlockStorageDevice::doUnmap(IOBlockStorageDeviceExtent * extents,
UInt32 extentsCount,
IOStorageUnmapOptions options)
{
#ifdef __x86_64__
if (options) {
return(kIOReturnUnsupported);
} else {
UInt32 i;
for (i = 0; i < extentsCount; i++) {
IOReturn result;
result = doDiscard(extents[i].blockStart, extents[i].blockCount);
if (result != kIOReturnSuccess) {
return(result);
}
}
}
return(kIOReturnSuccess);
#else
return(kIOReturnUnsupported);
#endif
}
IOReturn
IOBlockStorageDevice::doSetPriority(IOBlockStorageDeviceExtent * extents,
UInt32 extentsCount,
IOStoragePriority priority)
{
return(kIOReturnUnsupported);
}
IOReturn
IOBlockStorageDevice::doSynchronizeCache(void)
{
return(kIOReturnUnsupported);
}
IOReturn
IOBlockStorageDevice::doSynchronize(UInt64 block,
UInt64 nblks,
IOStorageSynchronizeOptions options)
{
return(doSynchronizeCache());
}
OSMetaClassDefineReservedUsed(IOBlockStorageDevice, 0);
OSMetaClassDefineReservedUsed(IOBlockStorageDevice, 1);
OSMetaClassDefineReservedUsed(IOBlockStorageDevice, 2);
OSMetaClassDefineReservedUnused(IOBlockStorageDevice, 3);
OSMetaClassDefineReservedUnused(IOBlockStorageDevice, 4);
OSMetaClassDefineReservedUnused(IOBlockStorageDevice, 5);
OSMetaClassDefineReservedUnused(IOBlockStorageDevice, 6);
OSMetaClassDefineReservedUnused(IOBlockStorageDevice, 7);
OSMetaClassDefineReservedUnused(IOBlockStorageDevice, 8);
OSMetaClassDefineReservedUnused(IOBlockStorageDevice, 9);
OSMetaClassDefineReservedUnused(IOBlockStorageDevice, 10);
OSMetaClassDefineReservedUnused(IOBlockStorageDevice, 11);
OSMetaClassDefineReservedUnused(IOBlockStorageDevice, 12);
OSMetaClassDefineReservedUnused(IOBlockStorageDevice, 13);
OSMetaClassDefineReservedUnused(IOBlockStorageDevice, 14);
OSMetaClassDefineReservedUnused(IOBlockStorageDevice, 15);
OSMetaClassDefineReservedUnused(IOBlockStorageDevice, 16);
OSMetaClassDefineReservedUnused(IOBlockStorageDevice, 17);
OSMetaClassDefineReservedUnused(IOBlockStorageDevice, 18);
OSMetaClassDefineReservedUnused(IOBlockStorageDevice, 19);
OSMetaClassDefineReservedUnused(IOBlockStorageDevice, 20);
OSMetaClassDefineReservedUnused(IOBlockStorageDevice, 21);
OSMetaClassDefineReservedUnused(IOBlockStorageDevice, 22);
OSMetaClassDefineReservedUnused(IOBlockStorageDevice, 23);
OSMetaClassDefineReservedUnused(IOBlockStorageDevice, 24);
OSMetaClassDefineReservedUnused(IOBlockStorageDevice, 25);
OSMetaClassDefineReservedUnused(IOBlockStorageDevice, 26);
OSMetaClassDefineReservedUnused(IOBlockStorageDevice, 27);
OSMetaClassDefineReservedUnused(IOBlockStorageDevice, 28);
OSMetaClassDefineReservedUnused(IOBlockStorageDevice, 29);
OSMetaClassDefineReservedUnused(IOBlockStorageDevice, 30);
OSMetaClassDefineReservedUnused(IOBlockStorageDevice, 31);