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--- dyld/dyld-210.2.3/launch-cache/dyld_shared_cache_util.cpp
+++ /dev/null
@@ -1,501 +0,0 @@
-/* -*- mode: C++; c-basic-offset: 4; tab-width: 4 -*-
- *
- * Copyright (c) 2009-2010 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 <vector>
-#include <map>
-#include <set>
-
-#include "dsc_iterator.h"
-#include "dyld_cache_format.h"
-#include "Architectures.hpp"
-#include "MachOFileAbstraction.hpp"
-#include "CacheFileAbstraction.hpp"
-
-
-#define OP_NULL 0
-#define OP_LIST_DEPENDENCIES 1
-#define OP_LIST_DYLIBS 2
-#define OP_LIST_LINKEDIT 3
-
-#define UUID_BYTES 16
-
-// Define this here so we can work with or without block support
-typedef void (*segment_callback_t)(const char* dylib, const char* segName, uint64_t offset, uint64_t sizem,
- uint64_t mappedddress, uint64_t slide, void* userData);
-
-struct seg_callback_args {
- char *target_path;
- uint32_t target_found;
- void *mapped_cache;
- uint32_t op;
- uint8_t print_uuids;
- uint8_t print_vmaddrs;
- uint8_t print_dylib_versions;
-};
-
-void usage() {
- fprintf(stderr, "Usage: dscutil -list [ -uuid ] [-vmaddr] | -dependents <dylib-path> [ -versions ] | -linkedit [ shared-cache-file ]\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_7K__
- return IPHONE_DYLD_SHARED_CACHE_DIR DYLD_SHARED_CACHE_BASE_NAME "armv7k";
-#else
- #error unsupported architecture
-#endif
-}
-
-/*
- * Get a vector of all the load commands from the header pointed to by headerAddr
- */
-template <typename A>
-std::vector<macho_load_command<typename A::P>* > get_load_cmds(void *headerAddr) {
- typedef typename A::P P;
- typedef typename A::P::E E;
-
- std::vector<macho_load_command<P>* > cmd_vector;
-
- const macho_header<P>* mh = (const macho_header<P>*)headerAddr;
- 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++) {
- cmd_vector.push_back((macho_load_command<P>*)cmd);
- cmd = (const macho_load_command<P>*)(((uint8_t*)cmd)+cmd->cmdsize());
- }
- return cmd_vector;
-}
-
-/*
- * List dependencies from the mach-o header at headerAddr
- * in the same format as 'otool -L'
- */
-template <typename A>
-void list_dependencies(const char *dylib, void *headerAddr, uint8_t print_dylib_versions) {
- typedef typename A::P P;
- typedef typename A::P::E E;
-
- std::vector< macho_load_command<P>* > cmds;
- cmds = get_load_cmds<A>(headerAddr);
- for(typename std::vector<macho_load_command<P>*>::iterator it = cmds.begin(); it != cmds.end(); ++it) {
- uint32_t cmdType = (*it)->cmd();
- if (cmdType == LC_LOAD_DYLIB ||
- cmdType == LC_ID_DYLIB ||
- cmdType == LC_LOAD_WEAK_DYLIB ||
- cmdType == LC_REEXPORT_DYLIB ||
- cmdType == LC_LOAD_UPWARD_DYLIB) {
- macho_dylib_command<P>* dylib_cmd = (macho_dylib_command<P>*)*it;
- const char *name = dylib_cmd->name();
- uint32_t compat_vers = dylib_cmd->compatibility_version();
- uint32_t current_vers = dylib_cmd->current_version();
-
- if (print_dylib_versions) {
- printf("\t%s", 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", name);
- }
- }
- }
-}
-
-/*
- * Print out a dylib from the shared cache, optionally including the UUID
- */
-template <typename A>
-void print_dylib(const char *dylib, void *headerAddr, uint64_t slide, struct seg_callback_args *args) {
- typedef typename A::P P;
- typedef typename A::P::E E;
- char uuid_str[UUID_BYTES*3];
- uint8_t got_uuid = 0;
- uint64_t vmaddr = 0;
-
- std::vector< macho_load_command<P>* > cmds;
- cmds = get_load_cmds<A>(headerAddr);
- for(typename std::vector<macho_load_command<P>*>::iterator it = cmds.begin(); it != cmds.end(); ++it) {
- uint32_t cmdType = (*it)->cmd();
- if (cmdType == LC_UUID) {
- macho_uuid_command<P>* uuid_cmd = (macho_uuid_command<P>*)*it;
- const uint8_t *uuid = uuid_cmd->uuid();
- sprintf(uuid_str, "<%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]);
- got_uuid = 1;
- }
- else if (cmdType == LC_SEGMENT) {
- macho_segment_command<P>* seg_cmd = (macho_segment_command<P>*)*it;
- if (strcmp(seg_cmd->segname(), "__TEXT") == 0) {
- vmaddr = seg_cmd->vmaddr();
- }
- }
- }
-
- if (args->print_vmaddrs)
- printf("0x%08llX ", vmaddr+slide);
- if (args->print_uuids) {
- if (got_uuid)
- printf("%s ", uuid_str);
- else
- printf("< no uuid in dylib > ");
- }
- printf("%s\n", dylib);
-}
-
-
-uint64_t sLinkeditBase = 0;
-std::map<uint32_t, char*> sPageToContent;
-
-
-
-
-static void add_linkedit(uint32_t pageStart, uint32_t pageEnd, char* message)
-{
- for (uint32_t p = pageStart; p <= pageEnd; p += 4096) {
- std::map<uint32_t, char*>::iterator pos = sPageToContent.find(p);
- if ( pos == sPageToContent.end() ) {
- sPageToContent[p] = strdup(message);
- }
- else {
- char* oldMessage = pos->second;
- char* newMesssage;
- asprintf(&newMesssage, "%s, %s", oldMessage, message);
- sPageToContent[p] = newMesssage;
- free(oldMessage);
- }
- }
-}
-
-
-/*
- * get LINKEDIT info for dylib
- */
-template <typename A>
-void process_linkedit(const char* dylib, void* headerAddr) {
- typedef typename A::P P;
- typedef typename A::P::E E;
- // filter out symlinks by only handling first path found for each mach header
- static std::set<void*> seenImages;
- if ( seenImages.count(headerAddr) != 0 )
- return;
- seenImages.insert(headerAddr);
- const macho_header<P>* mh = (const macho_header<P>*)headerAddr;
- 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(dylib, '/') + 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);
- }
- // 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);
- }
- // 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);
- }
- // 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);
- }
- }
- cmd = (const macho_load_command<P>*)(((uint8_t*)cmd)+cmd->cmdsize());
- }
-}
-
-
-
-/*
- * This callback is used with dsc_iterator, and called once for each segment in the target shared cache
- */
-template <typename A>
-void segment_callback(const char *dylib, const char *segName, uint64_t offset, uint64_t sizem,
- uint64_t mappedAddress, uint64_t slide, void *userData) {
- typedef typename A::P P;
- typedef typename A::P::E E;
- struct seg_callback_args *args = (struct seg_callback_args *)userData;
- if (strncmp(segName, "__TEXT", 6) == 0) {
- int target_match = args->target_path ? (strcmp(args->target_path, dylib) == 0) : 0;
- if (!args->target_path || target_match) {
- if (target_match) {
- args->target_found = 1;
- }
- void *headerAddr = (void*)((long)args->mapped_cache + (long)offset);
- switch (args->op) {
- case OP_LIST_DEPENDENCIES:
- list_dependencies<A>(dylib, headerAddr, args->print_dylib_versions);
- break;
- case OP_LIST_DYLIBS:
- print_dylib<A>(dylib, headerAddr, slide, args);
- break;
- case OP_LIST_LINKEDIT:
- process_linkedit<A>(dylib, headerAddr);
- default:
- break;
- }
- }
- }
- else if (strncmp(segName, "__LINKEDIT", 6) == 0) {
- sLinkeditBase = mappedAddress - offset;
- }
-}
-
-
-
-
-int main (int argc, char **argv) {
- struct seg_callback_args args;
- const char *shared_cache_path = NULL;
- void *mapped_cache;
- struct stat statbuf;
- int cache_fd;
- char c;
- bool print_slide_info = false;
-
- args.target_path = NULL;
- args.op = OP_NULL;
- args.print_uuids = 0;
- args.print_vmaddrs = 0;
- args.print_dylib_versions = 0;
- args.target_found = 0;
-
- for (uint32_t optind = 1; optind < argc; optind++) {
- char *opt = argv[optind];
- if (opt[0] == '-') {
- if (strcmp(opt, "-list") == 0) {
- if (args.op) {
- fprintf(stderr, "Error: select one of -list or -dependents\n");
- usage();
- exit(1);
- }
- args.op = OP_LIST_DYLIBS;
- } else if (strcmp(opt, "-dependents") == 0) {
- if (args.op) {
- fprintf(stderr, "Error: select one of -list or -dependents\n");
- usage();
- exit(1);
- }
- if (!(++optind < argc)) {
- fprintf(stderr, "Error: option -depdendents requires an argument\n");
- usage();
- exit(1);
- }
- args.op = OP_LIST_DEPENDENCIES;
- args.target_path = argv[optind];
- } else if (strcmp(opt, "-uuid") == 0) {
- args.print_uuids = 1;
- } else if (strcmp(opt, "-versions") == 0) {
- args.print_dylib_versions = 1;
- } else if (strcmp(opt, "-vmaddr") == 0) {
- args.print_vmaddrs = 1;
- } else if (strcmp(opt, "-linkedit") == 0) {
- args.op = OP_LIST_LINKEDIT;
- } else if (strcmp(opt, "-slide_info") == 0) {
- print_slide_info = true;
- } else {
- fprintf(stderr, "Error: unrecognized option %s\n", opt);
- usage();
- exit(1);
- }
- } else {
- shared_cache_path = opt;
- }
- }
-
- if ( !print_slide_info ) {
- if (args.op == OP_NULL) {
- fprintf(stderr, "Error: select one of -list or -dependents\n");
- usage();
- exit(1);
- }
-
- if (args.print_uuids && args.op != OP_LIST_DYLIBS)
- fprintf(stderr, "Warning: -uuid option ignored outside of -list mode\n");
- if (args.print_vmaddrs && args.op != OP_LIST_DYLIBS)
- fprintf(stderr, "Warning: -vmaddr option ignored outside of -list mode\n");
- if (args.print_dylib_versions && args.op != OP_LIST_DEPENDENCIES)
- fprintf(stderr, "Warning: -versions option ignored outside of -dependents mode\n");
-
- if (args.op == OP_LIST_DEPENDENCIES && !args.target_path) {
- fprintf(stderr, "Error: -dependents given, but no dylib path specified\n");
- usage();
- exit(1);
- }
- }
-
- if (!shared_cache_path)
- shared_cache_path = default_shared_cache_path();
-
- if (stat(shared_cache_path, &statbuf)) {
- fprintf(stderr, "Error: stat failed for dyld shared cache at %s\n", shared_cache_path);
- exit(1);
- }
-
- cache_fd = open(shared_cache_path, O_RDONLY);
- if (cache_fd < 0) {
- fprintf(stderr, "Error: failed to open shared cache file at %s\n", shared_cache_path);
- exit(1);
- }
- mapped_cache = mmap(NULL, statbuf.st_size, PROT_READ, MAP_PRIVATE, cache_fd, 0);
- if (mapped_cache == MAP_FAILED) {
- fprintf(stderr, "Error: mmap() for shared cache at %s failed, errno=%d\n", shared_cache_path, errno);
- exit(1);
- }
-
- if ( print_slide_info ) {
- const dyldCacheHeader<LittleEndian>* header = (dyldCacheHeader<LittleEndian>*)mapped_cache;
- if ( (strcmp(header->magic(), "dyld_v1 x86_64") != 0)
- && (strcmp(header->magic(), "dyld_v1 armv6") != 0)
- && (strcmp(header->magic(), "dyld_v1 armv7") != 0)
- && (strcmp(header->magic(), "dyld_v1 armv7f") != 0)
- && (strcmp(header->magic(), "dyld_v1 armv7k") != 0) ) {
- fprintf(stderr, "Error: unrecognized dyld shared cache magic or arch does not support sliding\n");
- exit(1);
- }
- 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*)mapped_cache + 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*)mapped_cache+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 {
- segment_callback_t callback;
- if ( strcmp((char*)mapped_cache, "dyld_v1 i386") == 0 )
- callback = segment_callback<x86>;
- else if ( strcmp((char*)mapped_cache, "dyld_v1 x86_64") == 0 )
- callback = segment_callback<x86_64>;
- else if ( strcmp((char*)mapped_cache, "dyld_v1 armv5") == 0 )
- callback = segment_callback<arm>;
- else if ( strcmp((char*)mapped_cache, "dyld_v1 armv6") == 0 )
- callback = segment_callback<arm>;
- else if ( strcmp((char*)mapped_cache, "dyld_v1 armv7") == 0 )
- callback = segment_callback<arm>;
- else if ( strcmp((char*)mapped_cache, "dyld_v1 armv7f") == 0 )
- callback = segment_callback<arm>;
- else if ( strcmp((char*)mapped_cache, "dyld_v1 armv7k") == 0 )
- callback = segment_callback<arm>;
- else {
- fprintf(stderr, "Error: unrecognized dyld shared cache magic.\n");
- exit(1);
- }
-
- args.mapped_cache = mapped_cache;
-
- #if __BLOCKS__
- // Shim to allow building for the host
- void *argsPtr = &args;
- dyld_shared_cache_iterate_segments_with_slide(mapped_cache,
- ^(const char* dylib, const char* segName, uint64_t offset, uint64_t size, uint64_t mappedddress, uint64_t slide ) {
- (callback)(dylib, segName, offset, size, mappedddress, slide, argsPtr);
- });
- #else
- dyld_shared_cache_iterate_segments_with_slide_nb(mapped_cache, callback, &args);
- #endif
-
- if (args.op == OP_LIST_LINKEDIT) {
- // dump -linkedit information
- for (std::map<uint32_t, char*>::iterator it = sPageToContent.begin(); it != sPageToContent.end(); ++it) {
- printf("0x%0llX %s\n", sLinkeditBase+it->first, it->second);
- }
- }
-
-
- if (args.target_path && !args.target_found) {
- fprintf(stderr, "Error: could not find '%s' in the shared cache at\n %s\n", args.target_path, shared_cache_path);
- exit(1);
- }
- }
- return 0;
-}