bool FileNVRAM::start(IOService *provider)
{
bool earlyInit = false;
LOG(NOTICE, "start() called (%d)\n", mInitComplete);
//start is called upon wake for some reason.
if (mInitComplete)
{
return true;
}
if (!super::start(provider))
{
return false;
}
LOG(NOTICE, "start() called (%d)\n", mInitComplete);
// mFilePath = NULL; // no know file
mLoggingLevel = NOTICE; // start with logging disabled, can be update for debug
mInitComplete = false; // Don't resync anything that's already in the file system.
mSafeToSync = false; // Don't sync untill later
// We should be root right now... cache this for later.
mCtx = vfs_context_current();
// Register Power modes
PMinit();
registerPowerDriver(this, sPowerStates, sizeof(sPowerStates) / sizeof(IOPMPowerState));
provider->joinPMtree(this);
IORegistryEntry* bootnvram = IORegistryEntry::fromPath(NVRAM_FILE_DT_LOCATION, gIODTPlane);
IORegistryEntry* root = IORegistryEntry::fromPath("/", gIODTPlane);
// Create the command gate.
mCommandGate = IOCommandGate::commandGate( this, dispatchCommand);
getWorkLoop()->addEventSource( mCommandGate );
// Replace the IOService dicionary with an empty one, clean out variables we don't want.
OSDictionary* dict = OSDictionary::withCapacity(1);
if (!dict)
{
return false;
}
setPropertyTable(dict);
if (bootnvram)
{
copyEntryProperties(NULL, bootnvram);
bootnvram->detachFromParent(root, gIODTPlane);
}
else
{
IOTimerEventSource* mTimer = IOTimerEventSource::timerEventSource(this, timeoutOccurred);
if (mTimer)
{
getWorkLoop()->addEventSource( mTimer);
mTimer->setTimeoutMS(50); // callback isn't being setup right, causes a panic
mSafeToSync = false;
}
else
{
earlyInit = true;
}
}
// We don't have initial NVRAM data from the bootloader, or we couldn't schedule a
// timer to read in /Extra/NVRAM/nvram.plist, so start up immediately.
if (earlyInit == true)
{
mSafeToSync = true;
registerNVRAM();
}
mInitComplete = true;
return true;
}
