Open Menu / dyld / SharedCacheRuntime.h
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/*
 * Copyright (c) 2017 Apple Inc. All rights reserved.
 *
 * @APPLE_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
 * compliance with the License. Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this
 * file.
 *
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
 * Please see the License for the specific language governing rights and
 * limitations under the License.
 *
 * @APPLE_LICENSE_HEADER_END@
 */



#ifndef __DYLD_SHARED_CACHE_RUNTIME_H__
#define __DYLD_SHARED_CACHE_RUNTIME_H__

#include <string.h>
#include <stdint.h>
#include "MachOFile.h"

class DyldSharedCache;

namespace dyld3 {

struct SharedCacheOptions {
    // Note we look in the default cache dir first, and then the fallback, if not null
    int             cacheDirFD = -1;
    bool            forcePrivate;
    bool            useHaswell;
    bool            verbose;
    bool            disableASLR;
    bool            enableReadOnlyDataConst;
    bool            preferCustomerCache;
    bool            forceDevCache;
    bool            isTranslated;
    bool            usePageInLinking;
    Platform        platform;
};

struct SharedCacheLoadInfo {
    const DyldSharedCache*      loadAddress     = nullptr;
    long                        slide           = 0;
    const char*                 errorMessage    = nullptr;
    bool                        cacheFileFound  = false;
    uint64_t                    FSID            = 0;
    uint64_t                    FSObjID         = 0;
    bool                        development     = false;
};

bool loadDyldCache(const SharedCacheOptions& options, SharedCacheLoadInfo* results);

struct SharedCacheFindDylibResults {
    const mach_header*          mhInCache;
    const char*                 pathInCache;
    long                        slideInCache;
};

bool findInSharedCacheImage(const SharedCacheLoadInfo& loadInfo, const char* dylibPathToFind, SharedCacheFindDylibResults* results);

bool pathIsInSharedCacheImage(const SharedCacheLoadInfo& loadInfo, const char* dylibPathToFind);

void deallocateExistingSharedCache();

} // namespace dyld3

#endif // __DYLD_SHARED_CACHE_RUNTIME_H__