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--- dyld/dyld-1340/other-tools/MiscFileUtils.cpp
+++ /dev/null
@@ -1,178 +0,0 @@
-/* -*- mode: C++; c-basic-offset: 4; tab-width: 4 -*-
- *
- * Copyright (c) 2009-2012 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@
- */
-
-#include "MiscFileUtils.h"
-
-// mach_o
-#include "Archive.h"
-#include "Error.h"
-#include "Header.h"
-#include "Universal.h"
-
-#include <fcntl.h>
-#include <sys/mman.h>
-#include <sys/stat.h>
-#include <unistd.h>
-
-#include <AvailabilityMacros.h>
-#include <mach-o/dyld_introspection.h>
-#include <mach-o/dyld_priv.h>
-
-using mach_o::Archive;
-using mach_o::Error;
-using mach_o::Header;
-using mach_o::Universal;
-
-namespace other_tools
-{
-
-bool withReadOnlyMappedFile(const char* path, void (^handler)(std::span<const uint8_t>))
-{
- struct stat statbuf;
- if ( ::stat(path, &statbuf) == -1 )
- return false;
- int fd = ::open(path, O_RDONLY, 0);
- if ( fd == -1 )
- return false;
- const void* mapping = ::mmap(nullptr, (size_t)statbuf.st_size, PROT_READ, MAP_PRIVATE, fd, 0);
- ::close(fd);
- if ( mapping == MAP_FAILED )
- return false;
-
- handler(std::span((uint8_t*)mapping, (size_t)statbuf.st_size));
-
- ::munmap((void*)mapping, (size_t)statbuf.st_size);
- return true;
-}
-
-
-static bool inStringVector(const std::span<const char*>& vect, const char* target)
-{
- for (const char* str : vect) {
- if ( strcmp(str, target) == 0 )
- return true;
- }
- return false;
-}
-
-void forSelectedSliceInPaths(std::span<const char*> paths, std::span<const char*> archFilter,
- void (^handler)(const char* path, const Header* slice, size_t len))
-{
- forSelectedSliceInPaths(paths, archFilter, /* dyld cache */ nullptr, handler);
-}
-
-void forSelectedSliceInPaths(std::span<const char*> paths, std::span<const char*> archFilter, const DyldSharedCache* dyldCache,
- void (^handler)(const char* path, const Header* slice, size_t len))
-{
- const auto handleArchive = [handler](const char* path, const Archive& ar) {
- Error err1 = ar.forEachMachO(^(const Archive::Member& m, const mach_o::Header * header, bool &stop) {
- char objPath[PATH_MAX];
- snprintf(objPath, sizeof(objPath), "%s(%s)", path, m.name.data());
- handler(objPath, header, m.contents.size());
- });
- if ( err1.hasError() )
- fprintf(stderr, "malformed archive '%s': %s\n", path, err1.message());
- };
-
- for (const char* path : paths) {
- bool found = withReadOnlyMappedFile(path, ^(std::span<const uint8_t> buffer) {
- if ( const Universal* uni = Universal::isUniversal(buffer) ) {
- uni->forEachSlice(^(Universal::Slice slice, bool& stopSlice) {
- const char* sliceArchName = slice.arch.name();
- if ( archFilter.empty() || inStringVector(archFilter, sliceArchName) ) {
- if ( std::optional<Archive> ar = Archive::isArchive(slice.buffer) ) {
- handleArchive(path, *ar);
- }
- else if ( Header::isMachO(slice.buffer) ) {
- handler(path, (Header*)slice.buffer.data(), slice.buffer.size());
- }
- else {
- fprintf(stderr, "%s slice in %s is not a mach-o\n", sliceArchName, path);
- }
- }
- });
- }
- else if ( const Header* mh = Header::isMachO(buffer) ) {
- if ( archFilter.empty() || inStringVector(archFilter, mh->archName()) )
- handler(path, (Header*)buffer.data(), buffer.size());
- }
- else if ( std::optional<Archive> ar = Archive::isArchive(buffer) ) {
- handleArchive(path, *ar);
- }
- });
-
- // dyld_for_each_installed_shared_cache() only available in macOS 12 aligned platforms
- // and we only build this code for earlier versions on macOS
- if ( !found ) {
- size_t cacheLen;
- if ( dyldCache == nullptr )
- dyldCache = (DyldSharedCache*)_dyld_get_shared_cache_range(&cacheLen);
-#if !TARGET_OS_OSX || (MAC_OS_X_VERSION_MIN_REQUIRED >= 120000)
- __block const DyldSharedCache* dyldCacheDK = nullptr;
- __block const char* currentArch = dyldCache->archName();
- if ( strncmp(path, "/System/DriverKit/", 18) == 0 ) {
- if ( dyldCacheDK == nullptr ) {
- dyld_for_each_installed_shared_cache(^(dyld_shared_cache_t cacheRef) {
- //__block bool firstCacheFile = false;
- dyld_shared_cache_for_each_file(cacheRef, ^(const char* aCacheFilePath) {
- // skip non-driverkit caches
- if ( strncmp(aCacheFilePath, "/System/DriverKit/", 18) != 0 )
- return;
-
- // skip cache files for all but matching arch with no extension
- const char* founddk = strstr(aCacheFilePath, currentArch);
- if ( founddk == nullptr || strlen(founddk) != strlen(currentArch) )
- return;
-
- std::vector<const DyldSharedCache*> dyldCaches = DyldSharedCache::mapCacheFiles(aCacheFilePath);
- if ( dyldCaches.empty() )
- return;
- dyldCacheDK = dyldCaches.front();
- });
- });
- }
- if ( dyldCacheDK != nullptr ) {
- uint32_t imageIndex;
- if ( dyldCacheDK->hasImagePath(path, imageIndex) ) {
- const mach_header* mh = dyldCacheDK->getIndexedImageEntry(imageIndex);
- handler(path, (Header*)mh, (size_t)(-1));
- }
- }
- }
- else
-#endif
-
- if ( dyldCache != nullptr ) {
- // see if path is in current dyld shared cache
- uint32_t imageIndex;
- if ( dyldCache->hasImagePath(path, imageIndex) ) {
- const mach_header* mh = dyldCache->getIndexedImageEntry(imageIndex);
- handler(path, (Header*)mh, (size_t)(-1));
- }
- }
- }
- }
-}
-
-} // namespace other_tools