mirror of
https://github.com/darlinghq/darling-dyld.git
synced 2025-02-17 05:27:46 +00:00
117 lines
5.3 KiB
C++
117 lines
5.3 KiB
C++
/*
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* Copyright (c) 2017 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_PATH_OVERRIDES_H__
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#define __DYLD_PATH_OVERRIDES_H__
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#include <stdint.h>
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#include "Logging.h"
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#include "MachOFile.h"
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namespace dyld3 {
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namespace closure {
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class VIS_HIDDEN PathPool
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{
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public:
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static PathPool* allocate();
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static void deallocate(PathPool* pool);
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const char* add(const char* path);
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void forEachPath(void (^handler)(const char* path)) const;
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bool contains(const char* path) const;
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private:
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enum { kAllocationSize = 32*1024 };
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PathPool* _next;
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char* _current;
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size_t _bytesFree;
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char _buffer[];
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};
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class VIS_HIDDEN PathOverrides
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{
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public:
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#if !BUILDING_LIBDYLD
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// libdyld is never unloaded
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~PathOverrides();
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#endif
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enum class FallbackPathMode { classic, restricted, none };
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void setFallbackPathHandling(FallbackPathMode mode);
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void setEnvVars(const char* envp[], const dyld3::MachOFile* mainExe, const char* mainExePath);
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void setMainExecutable(const dyld3::MachOFile* mainExe, const char* mainExePath);
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void forEachPathVariant(const char* requestedPath, bool pathIsInDyldCacheWhichCannotBeOverridden, void (^handler)(const char* possiblePath, bool isFallbackPath, bool& stop),
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Platform plat=MachOFile::currentPlatform()) const;
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void forEachEnvVar(void (^handler)(const char* envVar)) const;
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void forEachExecutableEnvVar(void (^handler)(const char* envVar)) const;
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void forEachInsertedDylib(void (^handler)(const char* dylibPath, bool &stop)) const;
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private:
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void setString(const char*& var, const char* value);
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const char* addString(const char* str);
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static void forEachInColonList(const char* list1, const char* list2, void (^callback)(const char* path, bool& stop));
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void addEnvVar(const char* keyEqualsValue, bool forExecutable);
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const char* getFrameworkPartialPath(const char* path) const;
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static const char* getLibraryLeafName(const char* path);
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void handleListEnvVar(const char* key, const char** list, void (^handler)(const char* envVar)) const;
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void handleEnvVar(const char* key, const char* value, void (^handler)(const char* envVar)) const;
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void forEachDylibFallback(Platform platform, void (^handler)(const char* fallbackDir, bool& stop)) const;
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void forEachFrameworkFallback(Platform platform, void (^handler)(const char* fallbackDir, bool& stop)) const;
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void forEachImageSuffix(const char* path, bool isFallbackPath, bool pathIsInDyldCacheWhichCannotBeOverridden, bool& stop, void (^handler)(const char* possiblePath, bool isFallbackPath, bool& stop)) const;
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void addSuffix(const char* path, const char* suffix, char* result) const;
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PathPool* _pathPool = nullptr;
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const char* _dylibPathOverridesEnv = nullptr;
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const char* _frameworkPathOverridesEnv = nullptr;
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const char* _dylibPathFallbacksEnv = nullptr;
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const char* _frameworkPathFallbacksEnv = nullptr;
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const char* _dylibPathOverridesExeLC = nullptr;
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const char* _frameworkPathOverridesExeLC = nullptr;
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const char* _dylibPathFallbacksExeLC = nullptr;
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const char* _frameworkPathFallbacksExeLC = nullptr;
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const char* _insertedDylibs = nullptr;
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const char* _imageSuffix = nullptr;
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const char* _rootPath = nullptr; // simulator only
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FallbackPathMode _fallbackPathMode = FallbackPathMode::classic;
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};
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#if BUILDING_LIBDYLD
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extern PathOverrides gPathOverrides;
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#endif
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} // namespace closure
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} // namespace dyld3
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#endif // __DYLD_PATH_OVERRIDES_H__
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