mirror of
https://github.com/darlinghq/darling-dyld.git
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95 lines
3.0 KiB
C++
95 lines
3.0 KiB
C++
/*
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* Copyright (c) 2020 Apple Inc. All rights reserved.
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*
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* @APPLE_LICENSE_HEADER_START@
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*
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* This file contains Original Code and/or Modifications of Original Code
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* as defined in and that are subject to the Apple Public Source License
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* Version 2.0 (the 'License'). You may not use this file except in
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* compliance with the License. Please obtain a copy of the License at
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* http://www.opensource.apple.com/apsl/ and read it before using this
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* file.
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*
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* The Original Code and all software distributed under the License are
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* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
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* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
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* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
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* Please see the License for the specific language governing rights and
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* limitations under the License.
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*
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* @APPLE_LICENSE_HEADER_END@
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*/
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#ifndef __DYLD_ROOTS_CHECKER_H__
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#define __DYLD_ROOTS_CHECKER_H__
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#include <TargetConditionals.h>
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#if TARGET_OS_OSX && (BUILDING_DYLD || BUILDING_CLOSURE_UTIL) && !TARGET_OS_SIMULATOR
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#define DYLD_SIMULATOR_ROOTS_SUPPORT 1
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#else
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#define DYLD_SIMULATOR_ROOTS_SUPPORT 0
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#endif
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class DyldSharedCache;
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namespace dyld3 {
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namespace closure {
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class FileSystem;
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struct Image;
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}
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#define VIS_HIDDEN __attribute__((visibility("hidden")))
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class VIS_HIDDEN RootsChecker
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{
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public:
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RootsChecker() = default;
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// Does a on-disk binary represent a root.
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// If the cache expects dylibs on disk, then so long as the dylib matches
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// the mod time and inode in the cache, it is not a root.
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// For the macOS simulator support dylibs, which are on disk, whether they
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// are roots depends on the state we are tracking in the comm page.
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// For all other dylibs and all other platforms, on-disk dylibs are always roots
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bool onDiskFileIsRoot(const char* path, const DyldSharedCache* cache, const closure::Image* image,
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const closure::FileSystem* fileSystem,
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uint64_t inode, uint64_t modtime) const;
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#if DYLD_SIMULATOR_ROOTS_SUPPORT
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static bool uuidMatchesSharedCache(const char* path, const closure::FileSystem* fileSystem,
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const DyldSharedCache* cache);
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void setLibsystemKernelIsRoot(bool v) {
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libsystemKernelIsRoot = v;
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}
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void setLibsystemPlatformIsRoot(bool v) {
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libsystemPlatformIsRoot = v;
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}
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void setLibsystemPThreadIsRoot(bool v) {
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libsystemPThreadIsRoot = v;
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}
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void setFileSystemCanBeModified(bool v) {
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fileSystemCanBeModified = v;
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}
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#endif
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private:
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// By default, assume nothing is a root, but that the file system is writable.
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// This should be conservatively correct.
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#if DYLD_SIMULATOR_ROOTS_SUPPORT
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bool libsystemKernelIsRoot = false;
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bool libsystemPlatformIsRoot = false;
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bool libsystemPThreadIsRoot = false;
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bool fileSystemCanBeModified = true;
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#endif
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};
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} // namespace dyld3
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#endif // __DYLD_ROOTS_CHECKER_H__
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