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--- dyld/dyld-239.4/launch-cache/dyld_shared_cache_util.cpp
+++ /dev/null
@@ -1,532 +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 <stdio.h>
-#include <unistd.h>
-#include <sys/stat.h>
-#include <string.h>
-#include <fcntl.h>
-#include <stdlib.h>
-#include <errno.h>
-#include <sys/mman.h>
-#include <sys/syslimits.h>
-#include <mach-o/arch.h>
-#include <mach-o/loader.h>
-
-#include <map>
-
-#include "dsc_iterator.h"
-#include "dyld_cache_format.h"
-#include "Architectures.hpp"
-#include "MachOFileAbstraction.hpp"
-#include "CacheFileAbstraction.hpp"
-
-
-enum Mode {
- modeNone,
- modeList,
- modeMap,
- modeDependencies,
- modeSlideInfo,
- modeLinkEdit,
- modeInfo
-};
-
-struct Options {
- Mode mode;
- const char* dependentsOfPath;
- const void* mappedCache;
- bool printUUIDs;
- bool printVMAddrs;
- bool printDylibVersions;
-};
-
-struct Results {
- std::map<uint32_t, const char*> pageToContent;
- uint64_t linkeditBase;
- bool dependentTargetFound;
-};
-
-
-
-
-
-void usage() {
- fprintf(stderr, "Usage: dyld_shared_cache_util -list [ -uuid ] [-vmaddr] | -dependents <dylib-path> [ -versions ] | -linkedit | -map [ shared-cache-file ] | -slide_info | -info\n");
-}
-
-/*
- * Get the path to the native shared cache for this host
- */
-static const char* default_shared_cache_path() {
-#if __i386__
- return MACOSX_DYLD_SHARED_CACHE_DIR DYLD_SHARED_CACHE_BASE_NAME "i386";
-#elif __x86_64__
- return MACOSX_DYLD_SHARED_CACHE_DIR DYLD_SHARED_CACHE_BASE_NAME "x86_64";
-#elif __ARM_ARCH_5TEJ__
- return IPHONE_DYLD_SHARED_CACHE_DIR DYLD_SHARED_CACHE_BASE_NAME "armv5";
-#elif __ARM_ARCH_6K__
- return IPHONE_DYLD_SHARED_CACHE_DIR DYLD_SHARED_CACHE_BASE_NAME "armv6";
-#elif __ARM_ARCH_7A__
- return IPHONE_DYLD_SHARED_CACHE_DIR DYLD_SHARED_CACHE_BASE_NAME "armv7";
-#elif __ARM_ARCH_7F__
- return IPHONE_DYLD_SHARED_CACHE_DIR DYLD_SHARED_CACHE_BASE_NAME "armv7f";
-#elif __ARM_ARCH_7S__
- return IPHONE_DYLD_SHARED_CACHE_DIR DYLD_SHARED_CACHE_BASE_NAME "armv7s";
-#elif __ARM_ARCH_7K__
- return IPHONE_DYLD_SHARED_CACHE_DIR DYLD_SHARED_CACHE_BASE_NAME "armv7k";
-#else
- #error unsupported architecture
-#endif
-}
-
-typedef void (*segment_callback_t)(const dyld_shared_cache_dylib_info* dylibInfo, const dyld_shared_cache_segment_info* segInfo,
- const Options& options, Results& results);
-
-
-
-/*
- * List dependencies from the mach-o header at headerAddr
- * in the same format as 'otool -L'
- */
-template <typename A>
-void print_dependencies(const dyld_shared_cache_dylib_info* dylibInfo, const dyld_shared_cache_segment_info* segInfo,
- const Options& options, Results& results) {
- typedef typename A::P P;
- typedef typename A::P::E E;
-
- if ( strcmp(options.dependentsOfPath, dylibInfo->path) != 0 )
- return;
- if ( strcmp(segInfo->name, "__TEXT") != 0 )
- return;
-
- const macho_dylib_command<P>* dylib_cmd;
- const macho_header<P>* mh = (const macho_header<P>*)dylibInfo->machHeader;
- const macho_load_command<P>* const cmds = (macho_load_command<P>*)((uintptr_t)dylibInfo->machHeader + sizeof(macho_header<P>));
- const uint32_t cmd_count = mh->ncmds();
- const macho_load_command<P>* cmd = cmds;
- for (uint32_t i = 0; i < cmd_count; ++i) {
- switch ( cmd->cmd() ) {
- case LC_LOAD_DYLIB:
- case LC_ID_DYLIB:
- case LC_REEXPORT_DYLIB:
- case LC_LOAD_WEAK_DYLIB:
- case LC_LOAD_UPWARD_DYLIB:
- dylib_cmd = (macho_dylib_command<P>*)cmd;
- if ( options.printDylibVersions ) {
- uint32_t compat_vers = dylib_cmd->compatibility_version();
- uint32_t current_vers = dylib_cmd->current_version();
- printf("\t%s", dylib_cmd->name());
- if ( compat_vers != 0xFFFFFFFF ) {
- printf("(compatibility version %u.%u.%u, current version %u.%u.%u)\n",
- (compat_vers >> 16),
- (compat_vers >> 8) & 0xff,
- (compat_vers) & 0xff,
- (current_vers >> 16),
- (current_vers >> 8) & 0xff,
- (current_vers) & 0xff);
- }
- else {
- printf("\n");
- }
- }
- else {
- printf("\t%s\n", dylib_cmd->name());
- }
- break;
- }
- cmd = (const macho_load_command<P>*)(((uint8_t*)cmd)+cmd->cmdsize());
- }
- results.dependentTargetFound = true;
-}
-
-/*
- * Print out a dylib from the shared cache, optionally including the UUID or unslid load address
- */
-template <typename A>
-void print_list(const dyld_shared_cache_dylib_info* dylibInfo, const dyld_shared_cache_segment_info* segInfo,
- const Options& options, Results& results)
-{
- if ( strcmp(segInfo->name, "__TEXT") != 0 )
- return;
-
- if ( options.printVMAddrs )
- printf("0x%08llX ", segInfo->address);
- if ( options.printUUIDs ) {
- if ( dylibInfo->uuid != NULL ) {
- const uint8_t* uuid = (uint8_t*)dylibInfo->uuid;;
- printf("<%02X%02X%02X%02X-%02X%02X-%02X%02X-%02X%02X-%02X%02X%02X%02X%02X%02X> ",
- uuid[0], uuid[1], uuid[2], uuid[3],
- uuid[4], uuid[5], uuid[6], uuid[7],
- uuid[8], uuid[9], uuid[10], uuid[11],
- uuid[12], uuid[13], uuid[14], uuid[15]);
- }
- else
- printf("< no uuid in dylib > ");
- }
- if ( dylibInfo->isAlias )
- printf("[alias] %s\n", dylibInfo->path);
- else
- printf("%s\n", dylibInfo->path);
-}
-
-
-
-
-static void add_linkedit(uint32_t pageStart, uint32_t pageEnd, const char* message, Results& results)
-{
- for (uint32_t p = pageStart; p <= pageEnd; p += 4096) {
- std::map<uint32_t, const char*>::iterator pos = results.pageToContent.find(p);
- if ( pos == results.pageToContent.end() ) {
- results.pageToContent[p] = strdup(message);
- }
- else {
- const char* oldMessage = pos->second;
- char* newMesssage;
- asprintf(&newMesssage, "%s, %s", oldMessage, message);
- results.pageToContent[p] = newMesssage;
- ::free((void*)oldMessage);
- }
- }
-}
-
-
-/*
- * get LINKEDIT info for dylib
- */
-template <typename A>
-void process_linkedit(const dyld_shared_cache_dylib_info* dylibInfo, const dyld_shared_cache_segment_info* segInfo,
- const Options& options, Results& results) {
- typedef typename A::P P;
- typedef typename A::P::E E;
- // filter out symlinks
- if ( dylibInfo->isAlias )
- return;
- const macho_header<P>* mh = (const macho_header<P>*)dylibInfo->machHeader;
- uint32_t ncmds = mh->ncmds();
- const macho_load_command<P>* const cmds = (macho_load_command<P>*)((long)mh + sizeof(macho_header<P>));
- const macho_load_command<P>* cmd = cmds;
- for (uint32_t i = 0; i < ncmds; i++) {
- if ( cmd->cmd() == LC_DYLD_INFO_ONLY ) {
- macho_dyld_info_command<P>* dyldInfo = (macho_dyld_info_command<P>*)cmd;
- char message[1000];
- const char* shortName = strrchr(dylibInfo->path, '/') + 1;
- // add export trie info
- if ( dyldInfo->export_size() != 0 ) {
- //printf("export_off=0x%X\n", dyldInfo->export_off());
- uint32_t exportPageOffsetStart = dyldInfo->export_off() & (-4096);
- uint32_t exportPageOffsetEnd = (dyldInfo->export_off() + dyldInfo->export_size()) & (-4096);
- sprintf(message, "exports from %s", shortName);
- add_linkedit(exportPageOffsetStart, exportPageOffsetEnd, message, results);
- }
- // add binding info
- if ( dyldInfo->bind_size() != 0 ) {
- uint32_t bindPageOffsetStart = dyldInfo->bind_off() & (-4096);
- uint32_t bindPageOffsetEnd = (dyldInfo->bind_off() + dyldInfo->bind_size()) & (-4096);
- sprintf(message, "bindings from %s", shortName);
- add_linkedit(bindPageOffsetStart, bindPageOffsetEnd, message, results);
- }
- // add lazy binding info
- if ( dyldInfo->lazy_bind_size() != 0 ) {
- uint32_t lazybindPageOffsetStart = dyldInfo->lazy_bind_off() & (-4096);
- uint32_t lazybindPageOffsetEnd = (dyldInfo->lazy_bind_off() + dyldInfo->lazy_bind_size()) & (-4096);
- sprintf(message, "lazy bindings from %s", shortName);
- add_linkedit(lazybindPageOffsetStart, lazybindPageOffsetEnd, message, results);
- }
- // add weak binding info
- if ( dyldInfo->weak_bind_size() != 0 ) {
- uint32_t weakbindPageOffsetStart = dyldInfo->weak_bind_off() & (-4096);
- uint32_t weakbindPageOffsetEnd = (dyldInfo->weak_bind_off() + dyldInfo->weak_bind_size()) & (-4096);
- sprintf(message, "weak bindings from %s", shortName);
- add_linkedit(weakbindPageOffsetStart, weakbindPageOffsetEnd, message, results);
- }
- }
- cmd = (const macho_load_command<P>*)(((uint8_t*)cmd)+cmd->cmdsize());
- }
-}
-
-
-/*
- * Print out a .map file similar to what update_dyld_shared_cache created when the cache file was built
- */
-template <typename A>
-void print_map(const dyld_shared_cache_dylib_info* dylibInfo, const dyld_shared_cache_segment_info* segInfo, const Options& options, Results& results) {
- if ( !dylibInfo->isAlias )
- printf("0x%08llX - 0x%08llX %s %s\n", segInfo->address, segInfo->address + segInfo->fileSize, segInfo->name, dylibInfo->path);
-}
-
-
-static void checkMode(Mode mode) {
- if ( mode != modeNone ) {
- fprintf(stderr, "Error: select one of: -list, -dependents, -info, -slide_info, -linkedit, or -map\n");
- usage();
- exit(1);
- }
-}
-
-int main (int argc, const char* argv[]) {
-
- const char* sharedCachePath = default_shared_cache_path();
-
- Options options;
- options.mode = modeNone;
- options.printUUIDs = false;
- options.printVMAddrs = false;
- options.printDylibVersions = false;
- options.dependentsOfPath = NULL;
-
- for (uint32_t i = 1; i < argc; i++) {
- const char* opt = argv[i];
- if (opt[0] == '-') {
- if (strcmp(opt, "-list") == 0) {
- checkMode(options.mode);
- options.mode = modeList;
- }
- else if (strcmp(opt, "-dependents") == 0) {
- checkMode(options.mode);
- options.mode = modeDependencies;
- options.dependentsOfPath = argv[++i];
- if ( i >= argc ) {
- fprintf(stderr, "Error: option -depdendents requires an argument\n");
- usage();
- exit(1);
- }
- }
- else if (strcmp(opt, "-linkedit") == 0) {
- checkMode(options.mode);
- options.mode = modeLinkEdit;
- }
- else if (strcmp(opt, "-info") == 0) {
- checkMode(options.mode);
- options.mode = modeInfo;
- }
- else if (strcmp(opt, "-slide_info") == 0) {
- checkMode(options.mode);
- options.mode = modeSlideInfo;
- }
- else if (strcmp(opt, "-map") == 0) {
- checkMode(options.mode);
- options.mode = modeMap;
- }
- else if (strcmp(opt, "-uuid") == 0) {
- options.printUUIDs = true;
- }
- else if (strcmp(opt, "-versions") == 0) {
- options.printDylibVersions = true;
- }
- else if (strcmp(opt, "-vmaddr") == 0) {
- options.printVMAddrs = true;
- }
- else {
- fprintf(stderr, "Error: unrecognized option %s\n", opt);
- usage();
- exit(1);
- }
- }
- else {
- sharedCachePath = opt;
- }
- }
-
- if ( options.mode == modeNone ) {
- fprintf(stderr, "Error: select one of -list, -dependents, -info, -linkedit, or -map\n");
- usage();
- exit(1);
- }
-
- if ( options.mode != modeSlideInfo ) {
- if ( options.printUUIDs && (options.mode != modeList) )
- fprintf(stderr, "Warning: -uuid option ignored outside of -list mode\n");
-
- if ( options.printVMAddrs && (options.mode != modeList) )
- fprintf(stderr, "Warning: -vmaddr option ignored outside of -list mode\n");
-
- if ( options.printDylibVersions && (options.mode != modeDependencies) )
- fprintf(stderr, "Warning: -versions option ignored outside of -dependents mode\n");
-
- if ( (options.mode == modeDependencies) && (options.dependentsOfPath == NULL) ) {
- fprintf(stderr, "Error: -dependents given, but no dylib path specified\n");
- usage();
- exit(1);
- }
- }
-
- struct stat statbuf;
- if ( ::stat(sharedCachePath, &statbuf) == -1 ) {
- fprintf(stderr, "Error: stat() failed for dyld shared cache at %s, errno=%d\n", sharedCachePath, errno);
- exit(1);
- }
-
- int cache_fd = ::open(sharedCachePath, O_RDONLY);
- if ( cache_fd < 0 ) {
- fprintf(stderr, "Error: open() failed for shared cache file at %s, errno=%d\n", sharedCachePath, errno);
- exit(1);
- }
- options.mappedCache = ::mmap(NULL, statbuf.st_size, PROT_READ, MAP_PRIVATE, cache_fd, 0);
- if (options.mappedCache == MAP_FAILED) {
- fprintf(stderr, "Error: mmap() for shared cache at %s failed, errno=%d\n", sharedCachePath, errno);
- exit(1);
- }
-
- if ( options.mode == modeSlideInfo ) {
- const dyldCacheHeader<LittleEndian>* header = (dyldCacheHeader<LittleEndian>*)options.mappedCache;
- if ( header->slideInfoOffset() == 0 ) {
- fprintf(stderr, "Error: dyld shared cache does not contain slide info\n");
- exit(1);
- }
- const dyldCacheFileMapping<LittleEndian>* mappings = (dyldCacheFileMapping<LittleEndian>*)((char*)options.mappedCache + header->mappingOffset());
- const dyldCacheFileMapping<LittleEndian>* dataMapping = &mappings[1];
- uint64_t dataStartAddress = dataMapping->address();
- uint64_t dataSize = dataMapping->size();
- const dyldCacheSlideInfo<LittleEndian>* slideInfoHeader = (dyldCacheSlideInfo<LittleEndian>*)((char*)options.mappedCache+header->slideInfoOffset());
- printf("slide info version=%d\n", slideInfoHeader->version());
- printf("toc_count=%d, data page count=%lld\n", slideInfoHeader->toc_count(), dataSize/4096);
- const dyldCacheSlideInfoEntry* entries = (dyldCacheSlideInfoEntry*)((char*)slideInfoHeader + slideInfoHeader->entries_offset());
- for(int i=0; i < slideInfoHeader->toc_count(); ++i) {
- printf("0x%08llX: [% 5d,% 5d] ", dataStartAddress + i*4096, i, slideInfoHeader->toc(i));
- const dyldCacheSlideInfoEntry* entry = &entries[slideInfoHeader->toc(i)];
- for(int j=0; j < slideInfoHeader->entries_size(); ++j)
- printf("%02X", entry->bits[j]);
- printf("\n");
- }
- }
- else if ( options.mode == modeInfo ) {
- const dyldCacheHeader<LittleEndian>* header = (dyldCacheHeader<LittleEndian>*)options.mappedCache;
- printf("uuid: ");
- if ( header->mappingOffset() >= 0x68 ) {
- const uint8_t* uuid = header->uuid();
- printf("%02X%02X%02X%02X-%02X%02X-%02X%02X-%02X%02X-%02X%02X%02X%02X%02X%02X\n",
- uuid[0], uuid[1], uuid[2], uuid[3],
- uuid[4], uuid[5], uuid[6], uuid[7],
- uuid[8], uuid[9], uuid[10], uuid[11],
- uuid[12], uuid[13], uuid[14], uuid[15]);
- }
- else {
- printf("n/a\n");
- }
- printf("image count: %u\n", header->imagesCount());
- printf("mappings:\n");
- const dyldCacheFileMapping<LittleEndian>* mappings = (dyldCacheFileMapping<LittleEndian>*)((char*)options.mappedCache + header->mappingOffset());
- for (uint32_t i=0; i < header->mappingCount(); ++i) {
- if ( mappings[i].init_prot() & VM_PROT_EXECUTE )
- printf(" __TEXT %lluMB\n", mappings[i].size()/(1024*1024));
- else if ( mappings[i]. init_prot() & VM_PROT_WRITE )
- printf(" __DATA %lluMB\n", mappings[i].size()/(1024*1024));
- else if ( mappings[i].init_prot() & VM_PROT_READ )
- printf(" __LINKEDIT %lluMB\n", mappings[i].size()/(1024*1024));
- }
- }
- else {
- segment_callback_t callback;
- if ( strcmp((char*)options.mappedCache, "dyld_v1 i386") == 0 ) {
- switch ( options.mode ) {
- case modeList:
- callback = print_list<x86>;
- break;
- case modeMap:
- callback = print_map<x86>;
- break;
- case modeDependencies:
- callback = print_dependencies<x86>;
- break;
- case modeLinkEdit:
- callback = process_linkedit<x86>;
- break;
- case modeNone:
- case modeInfo:
- case modeSlideInfo:
- break;
- }
- }
- else if ( strcmp((char*)options.mappedCache, "dyld_v1 x86_64") == 0 ) {
- switch ( options.mode ) {
- case modeList:
- callback = print_list<x86_64>;
- break;
- case modeMap:
- callback = print_map<x86_64>;
- break;
- case modeDependencies:
- callback = print_dependencies<x86_64>;
- break;
- case modeLinkEdit:
- callback = process_linkedit<x86_64>;
- break;
- case modeNone:
- case modeInfo:
- case modeSlideInfo:
- break;
- }
- }
- else if ( (strncmp((char*)options.mappedCache, "dyld_v1 armv", 14) == 0)
- || (strncmp((char*)options.mappedCache, "dyld_v1 armv", 13) == 0) ) {
- switch ( options.mode ) {
- case modeList:
- callback = print_list<arm>;
- break;
- case modeMap:
- callback = print_map<arm>;
- break;
- case modeDependencies:
- callback = print_dependencies<arm>;
- break;
- case modeLinkEdit:
- callback = process_linkedit<arm>;
- break;
- case modeNone:
- case modeInfo:
- case modeSlideInfo:
- break;
- }
- }
- else {
- fprintf(stderr, "Error: unrecognized dyld shared cache magic.\n");
- exit(1);
- }
-
- __block Results results;
- results.dependentTargetFound = false;
- int iterateResult = dyld_shared_cache_iterate(options.mappedCache, statbuf.st_size,
- ^(const dyld_shared_cache_dylib_info* dylibInfo, const dyld_shared_cache_segment_info* segInfo ) {
- (callback)(dylibInfo, segInfo, options, results);
- });
- if ( iterateResult != 0 ) {
- fprintf(stderr, "Error: malformed shared cache file\n");
- exit(1);
- }
-
- if ( options.mode == modeLinkEdit ) {
- // dump -linkedit information
- for (std::map<uint32_t, const char*>::iterator it = results.pageToContent.begin(); it != results.pageToContent.end(); ++it) {
- printf("0x%08X %s\n", it->first, it->second);
- }
- }
-
- if ( (options.mode == modeDependencies) && options.dependentsOfPath && !results.dependentTargetFound) {
- fprintf(stderr, "Error: could not find '%s' in the shared cache at\n %s\n", options.dependentsOfPath, sharedCachePath);
- exit(1);
- }
- }
- return 0;
-}