__private_extern__ void _CFPlugInRemovePlugInInstance(CFPlugInRef plugIn) {
if (__CFBundleGetPlugInData(plugIn)->_isPlugIn) {
/* MF:!!! Assert that instanceCount > 0. */
__CFBundleGetPlugInData(plugIn)->_instanceCount--;
if (__CFBundleGetPlugInData(plugIn)->_instanceCount == 0 && __CFBundleGetPlugInData(plugIn)->_loadOnDemand) {
// We unload the code lazily because the code that caused this function to be called is probably code from the plugin itself. If we unload now, we will hose things.
//CFBundleUnloadExecutable(plugIn);
_CFBundleScheduleForUnloading(CFPlugInGetBundle(plugIn));
}
/* Instances also retain the CFPlugIn */
/* MF:!!! This will cause immediate unloading if it was the last ref on the plugin. */
CFRelease(plugIn);
}
}
static kern_return_t
IOFindPlugIns( io_service_t service,
CFUUIDRef pluginType,
CFArrayRef * factories, CFArrayRef * plists )
{
CFURLRef url;
CFPlugInRef onePlugin;
CFBundleRef bundle;
CFDictionaryRef plist;
CFDictionaryRef matching;
CFDictionaryRef pluginTypes;
CFMutableStringRef path;
LookUUIDContext context;
CFStringRef pluginName;
boolean_t matches;
kern_return_t kr = kIOReturnSuccess;
// -- loadables
onePlugin = NULL;
pluginName = NULL;
path = NULL;
url = NULL;
do {
pluginTypes = IORegistryEntryCreateCFProperty( service, CFSTR(kIOCFPlugInTypesKey),
kCFAllocatorDefault, kNilOptions );
if( !pluginTypes )
continue;
// look up UUID key this way - otherwise string case matters
// CFShow( pluginTypes );
context.key = pluginType;
context.result = 0;
CFDictionaryApplyFunction( pluginTypes, &_IOGetWithUUIDKey, &context);
pluginName = (CFStringRef) context.result;
if( !pluginName)
continue;
path = CFStringCreateMutable( kCFAllocatorDefault, 0 );
if( !path)
continue;
CFStringAppendCString(path,
"/System/Library/Extensions/",
kCFStringEncodingMacRoman);
CFStringAppend(path, pluginName);
url = CFURLCreateWithFileSystemPath(NULL, path,
kCFURLPOSIXPathStyle, TRUE);
if( !url)
continue;
onePlugin = CFPlugInCreate(NULL, url);
} while( false );
// if (pluginName && (!onePlugin))
// printf("Could not create CFPluginRef.\n");
if( url)
CFRelease( url );
if( path)
CFRelease( path );
if( pluginTypes )
CFRelease( pluginTypes );
// --
if( onePlugin
&& (bundle = CFPlugInGetBundle(onePlugin))
&& (plist = CFBundleGetInfoDictionary(bundle))
&& (matching = (CFDictionaryRef)
CFDictionaryGetValue(plist, CFSTR("Personality")))) {
kr = IOServiceMatchPropertyTable( service, matching, &matches);
if( kr != kIOReturnSuccess)
matches = FALSE;
} else
matches = TRUE;
if( matches) {
if( onePlugin)
*factories = CFPlugInFindFactoriesForPlugInTypeInPlugIn(pluginType, onePlugin);
else
*factories = 0;//CFPlugInFindFactoriesForPlugInType(pluginType);
} else
*factories = 0;
*plists = 0;
return( kr );
}
__private_extern__ void _CFPlugInAddPlugInInstance(CFPlugInRef plugIn) {
if (__CFBundleGetPlugInData(plugIn)->_isPlugIn) {
if (__CFBundleGetPlugInData(plugIn)->_instanceCount == 0 && __CFBundleGetPlugInData(plugIn)->_loadOnDemand) _CFBundleUnscheduleForUnloading(CFPlugInGetBundle(plugIn)); // Make sure we are not scheduled for unloading
__CFBundleGetPlugInData(plugIn)->_instanceCount++;
/* Instances also retain the CFBundle */
CFRetain(plugIn);
}
}
