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* Copyright (c) 2024 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
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* may not be used to create, or enable the creation or redistribution of,
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*
* Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this file.
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#include <IOKit/IOProviderPropertyMerger.h>
#include <IOKit/IOService.h>
#define super IOService
OSDefineMetaClassAndStructors(IOProviderPropertyMerger, IOService);
bool
IOProviderPropertyMerger::init(OSDictionary * dictionary)
{
OSDictionary *mergeProperties = OSDynamicCast(OSDictionary, dictionary->getObject(kIOProviderMergePropertiesKey));
OSDictionary *parentMergeProperties = OSDynamicCast(OSDictionary, dictionary->getObject(kIOProviderParentMergePropertiesKey));
// remove security-sensitive properties from the dictionary used to merge properties to provider
if (mergeProperties) {
mergeProperties->removeObject(gIOServiceDEXTEntitlementsKey);
}
if (parentMergeProperties) {
parentMergeProperties->removeObject(gIOServiceDEXTEntitlementsKey);
}
return super::init(dictionary);
}
bool
IOProviderPropertyMerger::setProperty(const OSSymbol * aKey, OSObject * anObject)
{
// Disallow modifying security-sensitive properties
if (aKey->isEqualTo(kIOProviderMergePropertiesKey) || aKey->isEqualTo(kIOProviderParentMergePropertiesKey)) {
return false;
}
return super::setProperty(aKey, anObject);
}
void
IOProviderPropertyMerger::setPropertyTable(OSDictionary * dict __unused)
{
// Disallow changing the entire property table since that can change security-sensitive properties
}