mirror of
https://github.com/dart-lang/sdk
synced 2024-10-14 09:43:57 +00:00
ef89de9dc1
TEST=remove PROT_EXEC, see ACCERR Change-Id: I99bb5b2aba4f40dd8b6e074ed652f8cbbd69cdd6 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/336280 Reviewed-by: Martin Kustermann <kustermann@google.com> Commit-Queue: Ryan Macnak <rmacnak@google.com>
387 lines
12 KiB
C++
387 lines
12 KiB
C++
// Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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#include "platform/globals.h"
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#if defined(DART_HOST_OS_MACOS)
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#include "bin/platform.h"
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#include "bin/platform_macos.h"
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#include <CoreFoundation/CoreFoundation.h>
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#if !DART_HOST_OS_IOS
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#include <crt_externs.h>
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#endif // !DART_HOST_OS_IOS
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#include <dlfcn.h>
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#include <errno.h>
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#include <mach-o/dyld.h>
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#include <pthread.h>
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#include <signal.h>
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#include <sys/resource.h>
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#include <sys/sysctl.h>
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#include <sys/types.h>
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#include <sys/utsname.h>
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#include <unistd.h>
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#include <string>
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#include "bin/console.h"
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#include "bin/file.h"
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#include "bin/platform_macos_cocoa.h"
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namespace dart {
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namespace bin {
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const char* Platform::executable_name_ = nullptr;
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int Platform::script_index_ = 1;
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char** Platform::argv_ = nullptr;
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static const char* strcode(int si_signo, int si_code) {
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#define CASE(signo, code) \
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if (si_signo == signo && si_code == code) return #code;
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CASE(SIGILL, ILL_ILLOPC);
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CASE(SIGILL, ILL_ILLOPN);
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CASE(SIGILL, ILL_ILLADR);
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CASE(SIGILL, ILL_ILLTRP);
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CASE(SIGILL, ILL_PRVOPC);
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CASE(SIGILL, ILL_PRVREG);
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CASE(SIGILL, ILL_COPROC);
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CASE(SIGILL, ILL_BADSTK);
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CASE(SIGSEGV, SEGV_MAPERR);
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CASE(SIGSEGV, SEGV_ACCERR);
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CASE(SIGBUS, BUS_ADRALN);
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CASE(SIGBUS, BUS_ADRERR);
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CASE(SIGBUS, BUS_OBJERR);
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CASE(SIGTRAP, TRAP_BRKPT);
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CASE(SIGTRAP, TRAP_TRACE);
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#undef CASE
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return "?";
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}
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static void segv_handler(int signal, siginfo_t* siginfo, void* context) {
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Syslog::PrintErr(
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"\n===== CRASH =====\n"
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"si_signo=%s(%d), si_code=%s(%d), si_addr=%p\n",
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strsignal(siginfo->si_signo), siginfo->si_signo,
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strcode(siginfo->si_signo, siginfo->si_code), siginfo->si_code,
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siginfo->si_addr);
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Dart_DumpNativeStackTrace(context);
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Dart_PrepareToAbort();
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abort();
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}
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bool Platform::Initialize() {
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// Turn off the signal handler for SIGPIPE as it causes the process
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// to terminate on writing to a closed pipe. Without the signal
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// handler error EPIPE is set instead.
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struct sigaction act = {};
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act.sa_handler = SIG_IGN;
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if (sigaction(SIGPIPE, &act, nullptr) != 0) {
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perror("Setting signal handler failed");
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return false;
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}
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// tcsetattr raises SIGTTOU if we try to set console attributes when
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// backgrounded, which suspends the process. Ignoring the signal prevents
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// us from being suspended and lets us fail gracefully instead.
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sigset_t signal_mask;
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sigemptyset(&signal_mask);
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sigaddset(&signal_mask, SIGTTOU);
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if (sigprocmask(SIG_BLOCK, &signal_mask, nullptr) < 0) {
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perror("Setting signal handler failed");
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return false;
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}
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act.sa_flags = SA_SIGINFO;
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act.sa_sigaction = &segv_handler;
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if (sigemptyset(&act.sa_mask) != 0) {
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perror("sigemptyset() failed.");
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return false;
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}
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if (sigaddset(&act.sa_mask, SIGPROF) != 0) {
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perror("sigaddset() failed");
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return false;
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}
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if (sigaction(SIGSEGV, &act, nullptr) != 0) {
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perror("sigaction() failed.");
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return false;
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}
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if (sigaction(SIGBUS, &act, nullptr) != 0) {
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perror("sigaction() failed.");
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return false;
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}
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if (sigaction(SIGTRAP, &act, nullptr) != 0) {
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perror("sigaction() failed.");
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return false;
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}
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if (sigaction(SIGILL, &act, nullptr) != 0) {
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perror("sigaction() failed.");
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return false;
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}
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return true;
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}
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int Platform::NumberOfProcessors() {
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int32_t cpus = -1;
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size_t cpus_length = sizeof(cpus);
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if (sysctlbyname("hw.logicalcpu", &cpus, &cpus_length, nullptr, 0) == 0) {
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return cpus;
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} else {
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// Failed, fallback to using sysconf.
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return sysconf(_SC_NPROCESSORS_ONLN);
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}
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}
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const char* Platform::OperatingSystemVersion() {
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std::string version(NSProcessInfoOperatingSystemVersionString());
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return DartUtils::ScopedCopyCString(version.c_str());
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}
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const char* Platform::LibraryPrefix() {
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return "lib";
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}
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const char* Platform::LibraryExtension() {
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return "dylib";
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}
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static const char* GetLocaleName() {
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CFLocaleRef locale = CFLocaleCopyCurrent();
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CFStringRef locale_string = CFLocaleGetIdentifier(locale);
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CFIndex len = CFStringGetLength(locale_string);
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CFIndex max_len =
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CFStringGetMaximumSizeForEncoding(len, kCFStringEncodingUTF8) + 1;
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char* result = reinterpret_cast<char*>(Dart_ScopeAllocate(max_len));
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ASSERT(result != nullptr);
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bool success =
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CFStringGetCString(locale_string, result, max_len, kCFStringEncodingUTF8);
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CFRelease(locale);
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if (!success) {
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return nullptr;
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}
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return result;
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}
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static const char* GetPreferredLanguageName() {
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CFArrayRef languages = CFLocaleCopyPreferredLanguages();
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CFIndex languages_length = CFArrayGetCount(languages);
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if (languages_length < 1) {
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CFRelease(languages);
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return nullptr;
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}
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CFTypeRef item =
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reinterpret_cast<CFTypeRef>(CFArrayGetValueAtIndex(languages, 0));
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CFTypeID item_type = CFGetTypeID(item);
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ASSERT(item_type == CFStringGetTypeID());
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CFStringRef language = reinterpret_cast<CFStringRef>(item);
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CFIndex len = CFStringGetLength(language);
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CFIndex max_len =
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CFStringGetMaximumSizeForEncoding(len, kCFStringEncodingUTF8) + 1;
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char* result = reinterpret_cast<char*>(Dart_ScopeAllocate(max_len));
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ASSERT(result != nullptr);
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bool success =
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CFStringGetCString(language, result, max_len, kCFStringEncodingUTF8);
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CFRelease(languages);
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if (!success) {
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return nullptr;
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}
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return result;
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}
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const char* Platform::LocaleName() {
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// First see if there is a preferred language. If not, return the
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// current locale name.
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const char* preferred_language = GetPreferredLanguageName();
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return (preferred_language != nullptr) ? preferred_language : GetLocaleName();
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}
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bool Platform::LocalHostname(char* buffer, intptr_t buffer_length) {
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return gethostname(buffer, buffer_length) == 0;
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}
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char** Platform::Environment(intptr_t* count) {
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#if DART_HOST_OS_IOS
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// TODO(zra,chinmaygarde): On iOS, environment variables are seldom used. Wire
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// this up if someone needs it. In the meantime, we return an empty array.
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char** result;
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result = reinterpret_cast<char**>(Dart_ScopeAllocate(1 * sizeof(*result)));
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if (result == nullptr) {
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return nullptr;
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}
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result[0] = nullptr;
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*count = 0;
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return result;
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#else
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// Using environ directly is only safe as long as we do not
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// provide access to modifying environment variables.
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// On MacOS you have to do a bit of magic to get to the
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// environment strings.
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char** environ = *(_NSGetEnviron());
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intptr_t i = 0;
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char** tmp = environ;
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while (*(tmp++) != nullptr) {
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i++;
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}
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*count = i;
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char** result;
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result = reinterpret_cast<char**>(Dart_ScopeAllocate(i * sizeof(*result)));
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for (intptr_t current = 0; current < i; current++) {
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result[current] = environ[current];
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}
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return result;
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#endif
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}
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const char* Platform::GetExecutableName() {
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return executable_name_;
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}
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const char* Platform::ResolveExecutablePath() {
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// Get the required length of the buffer.
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uint32_t path_size = 0;
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if (_NSGetExecutablePath(nullptr, &path_size) == 0) {
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return nullptr;
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}
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// Allocate buffer and get executable path.
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char* path = DartUtils::ScopedCString(path_size);
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if (_NSGetExecutablePath(path, &path_size) != 0) {
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return nullptr;
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}
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// Return the canonical path as the returned path might contain symlinks.
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const char* canon_path = File::GetCanonicalPath(nullptr, path);
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return canon_path;
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}
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intptr_t Platform::ResolveExecutablePathInto(char* result, size_t result_size) {
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// Get the required length of the buffer.
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uint32_t path_size = 0;
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if (_NSGetExecutablePath(nullptr, &path_size) == 0) {
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return -1;
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}
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if (path_size > result_size) {
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return -1;
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}
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if (_NSGetExecutablePath(result, &path_size) != 0) {
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return -1;
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}
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return path_size;
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}
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void Platform::SetProcessName(const char* name) {
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pthread_setname_np(name);
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#if !defined(DART_HOST_OS_IOS)
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// Attempt to set the name displayed in ActivityMonitor.
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// https://codereview.chromium.org/659007
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class ScopedDLHandle : public ValueObject {
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public:
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explicit ScopedDLHandle(void* handle) : handle_(handle) {}
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~ScopedDLHandle() {
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if (handle_ != nullptr) dlclose(handle_);
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}
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void* get() { return handle_; }
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private:
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void* handle_;
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DISALLOW_COPY_AND_ASSIGN(ScopedDLHandle);
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};
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class ScopedCFStringRef : public ValueObject {
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public:
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explicit ScopedCFStringRef(const char* s)
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: ref_(CFStringCreateWithCString(nullptr, (s), kCFStringEncodingUTF8)) {
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}
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~ScopedCFStringRef() {
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if (ref_ != nullptr) CFRelease(ref_);
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}
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CFStringRef get() { return ref_; }
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private:
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CFStringRef ref_;
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DISALLOW_COPY_AND_ASSIGN(ScopedCFStringRef);
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};
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ScopedDLHandle application_services_handle(
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dlopen("/System/Library/Frameworks/ApplicationServices.framework/"
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"Versions/A/ApplicationServices",
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RTLD_LAZY | RTLD_LOCAL));
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if (application_services_handle.get() == nullptr) return;
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ScopedCFStringRef launch_services_bundle_name("com.apple.LaunchServices");
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CFBundleRef launch_services_bundle =
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CFBundleGetBundleWithIdentifier(launch_services_bundle_name.get());
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if (launch_services_bundle == nullptr) return;
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#define GET_FUNC(name, cstr) \
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ScopedCFStringRef name##_id(cstr); \
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*reinterpret_cast<void**>(&name) = CFBundleGetFunctionPointerForName( \
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launch_services_bundle, name##_id.get()); \
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if (name == nullptr) return;
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#define GET_DATA(name, cstr) \
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ScopedCFStringRef name##_id(cstr); \
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*reinterpret_cast<void**>(&name) = \
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CFBundleGetDataPointerForName(launch_services_bundle, name##_id.get()); \
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if (name == nullptr) return;
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CFTypeRef (*_LSGetCurrentApplicationASN)(void);
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GET_FUNC(_LSGetCurrentApplicationASN, "_LSGetCurrentApplicationASN");
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OSStatus (*_LSSetApplicationInformationItem)(int, CFTypeRef, CFStringRef,
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CFStringRef, CFDictionaryRef*);
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GET_FUNC(_LSSetApplicationInformationItem,
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"_LSSetApplicationInformationItem");
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CFDictionaryRef (*_LSApplicationCheckIn)(int, CFDictionaryRef);
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GET_FUNC(_LSApplicationCheckIn, "_LSApplicationCheckIn");
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void (*_LSSetApplicationLaunchServicesServerConnectionStatus)(uint64_t,
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void*);
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GET_FUNC(_LSSetApplicationLaunchServicesServerConnectionStatus,
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"_LSSetApplicationLaunchServicesServerConnectionStatus");
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CFStringRef* _kLSDisplayNameKey;
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GET_DATA(_kLSDisplayNameKey, "_kLSDisplayNameKey");
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if (*_kLSDisplayNameKey == nullptr) return;
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_LSSetApplicationLaunchServicesServerConnectionStatus(0, nullptr);
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_LSApplicationCheckIn(-2, CFBundleGetInfoDictionary(CFBundleGetMainBundle()));
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CFTypeRef asn;
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asn = _LSGetCurrentApplicationASN();
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if (asn == nullptr) return;
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ScopedCFStringRef cf_name(name);
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_LSSetApplicationInformationItem(-2, asn, *_kLSDisplayNameKey, cf_name.get(),
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nullptr);
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#undef GET_DATA
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#undef GET_FUNC
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#endif // !defined(DART_HOST_OS_IOS)
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}
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void Platform::Exit(int exit_code) {
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Console::RestoreConfig();
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Dart_PrepareToAbort();
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exit(exit_code);
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}
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void Platform::_Exit(int exit_code) {
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Console::RestoreConfig();
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Dart_PrepareToAbort();
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_exit(exit_code);
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}
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void Platform::SetCoreDumpResourceLimit(int value) {
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rlimit limit = {static_cast<rlim_t>(value), static_cast<rlim_t>(value)};
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setrlimit(RLIMIT_CORE, &limit);
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}
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} // namespace bin
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} // namespace dart
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#endif // defined(DART_HOST_OS_MACOS)
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