/*
* Copyright (c) 2012 The Chromium Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#define NACL_LOG_MODULE_NAME "Plugin::ServiceRuntime"
#include "ppapi/native_client/src/trusted/plugin/service_runtime.h"
#include <string.h>
#include <set>
#include <string>
#include <utility>
#include "base/compiler_specific.h"
#include "native_client/src/include/checked_cast.h"
#include "native_client/src/include/portability_io.h"
#include "native_client/src/include/portability_string.h"
#include "native_client/src/include/nacl_macros.h"
#include "native_client/src/include/nacl_scoped_ptr.h"
#include "native_client/src/include/nacl_string.h"
#include "native_client/src/shared/platform/nacl_check.h"
#include "native_client/src/shared/platform/nacl_log.h"
#include "native_client/src/shared/platform/nacl_sync.h"
#include "native_client/src/shared/platform/nacl_sync_checked.h"
#include "native_client/src/shared/platform/nacl_sync_raii.h"
#include "native_client/src/shared/platform/scoped_ptr_refcount.h"
#include "native_client/src/trusted/desc/nacl_desc_imc.h"
// remove when we no longer need to cast the DescWrapper below.
#include "native_client/src/trusted/desc/nacl_desc_io.h"
#include "native_client/src/trusted/desc/nrd_xfer.h"
#include "native_client/src/trusted/nonnacl_util/sel_ldr_launcher.h"
// This is here due to a Windows API collision; plugin.h through
// file_downloader.h transitively includes Instance.h which defines a
// PostMessage method, so this undef must appear before any of those.
#ifdef PostMessage
#undef PostMessage
#endif
#include "native_client/src/public/imc_types.h"
#include "native_client/src/trusted/service_runtime/nacl_error_code.h"
#include "native_client/src/trusted/validator/nacl_file_info.h"
#include "ppapi/c/pp_errors.h"
#include "ppapi/cpp/core.h"
#include "ppapi/cpp/completion_callback.h"
#include "ppapi/native_client/src/trusted/plugin/manifest.h"
#include "ppapi/native_client/src/trusted/plugin/plugin.h"
#include "ppapi/native_client/src/trusted/plugin/plugin_error.h"
#include "ppapi/native_client/src/trusted/plugin/pnacl_options.h"
#include "ppapi/native_client/src/trusted/plugin/pnacl_resources.h"
#include "ppapi/native_client/src/trusted/plugin/sel_ldr_launcher_chrome.h"
#include "ppapi/native_client/src/trusted/plugin/srpc_client.h"
#include "ppapi/native_client/src/trusted/weak_ref/call_on_main_thread.h"
namespace {
// For doing crude quota enforcement on writes to temp files.
// We do not allow a temp file bigger than 128 MB for now.
// There is currently a limit of 32M for nexe text size, so 128M
// should be plenty for static data
const int64_t kMaxTempQuota = 0x8000000;
} // namespace
namespace plugin {
PluginReverseInterface::PluginReverseInterface(
nacl::WeakRefAnchor* anchor,
Plugin* plugin,
const Manifest* manifest,
ServiceRuntime* service_runtime,
pp::CompletionCallback init_done_cb,
pp::CompletionCallback crash_cb)
: anchor_(anchor),
plugin_(plugin),
manifest_(manifest),
service_runtime_(service_runtime),
shutting_down_(false),
init_done_cb_(init_done_cb),
crash_cb_(crash_cb) {
NaClXMutexCtor(&mu_);
NaClXCondVarCtor(&cv_);
}
PluginReverseInterface::~PluginReverseInterface() {
NaClCondVarDtor(&cv_);
NaClMutexDtor(&mu_);
}
void PluginReverseInterface::ShutDown() {
NaClLog(4, "PluginReverseInterface::Shutdown: entered\n");
nacl::MutexLocker take(&mu_);
shutting_down_ = true;
NaClXCondVarBroadcast(&cv_);
NaClLog(4, "PluginReverseInterface::Shutdown: broadcasted, exiting\n");
}
void PluginReverseInterface::Log(nacl::string message) {
LogToJavaScriptConsoleResource* continuation =
new LogToJavaScriptConsoleResource(message);
CHECK(continuation != NULL);
NaClLog(4, "PluginReverseInterface::Log(%s)\n", message.c_str());
plugin::WeakRefCallOnMainThread(
anchor_,
0, /* delay in ms */
this,
&plugin::PluginReverseInterface::Log_MainThreadContinuation,
continuation);
}
void PluginReverseInterface::DoPostMessage(nacl::string message) {
PostMessageResource* continuation = new PostMessageResource(message);
CHECK(continuation != NULL);
NaClLog(4, "PluginReverseInterface::DoPostMessage(%s)\n", message.c_str());
plugin::WeakRefCallOnMainThread(
anchor_,
0, /* delay in ms */
this,
&plugin::PluginReverseInterface::PostMessage_MainThreadContinuation,
continuation);
}
void PluginReverseInterface::StartupInitializationComplete() {
NaClLog(4, "PluginReverseInterface::StartupInitializationComplete\n");
if (init_done_cb_.pp_completion_callback().func != NULL) {
NaClLog(4,
"PluginReverseInterface::StartupInitializationComplete:"
" invoking CB\n");
pp::Module::Get()->core()->CallOnMainThread(0, init_done_cb_, PP_OK);
} else {
NaClLog(1,
"PluginReverseInterface::StartupInitializationComplete:"
" init_done_cb_ not valid, skipping.\n");
}
}
void PluginReverseInterface::Log_MainThreadContinuation(
LogToJavaScriptConsoleResource* p,
int32_t err) {
UNREFERENCED_PARAMETER(err);
NaClLog(4,
"PluginReverseInterface::Log_MainThreadContinuation(%s)\n",
p->message.c_str());
plugin_->AddToConsole(p->message);
}
void PluginReverseInterface::PostMessage_MainThreadContinuation(
PostMessageResource* p,
int32_t err) {
UNREFERENCED_PARAMETER(err);
NaClLog(4,
"PluginReverseInterface::PostMessage_MainThreadContinuation(%s)\n",
p->message.c_str());
plugin_->PostMessage(std::string("DEBUG_POSTMESSAGE:") + p->message);
}
bool PluginReverseInterface::EnumerateManifestKeys(
std::set<nacl::string>* out_keys) {
Manifest const* mp = manifest_;
if (!mp->GetFileKeys(out_keys)) {
return false;
}
return true;
}
// TODO(bsy): OpenManifestEntry should use the manifest to ResolveKey
// and invoke StreamAsFile with a completion callback that invokes
// GetPOSIXFileDesc.
bool PluginReverseInterface::OpenManifestEntry(nacl::string url_key,
struct NaClFileInfo* info) {
ErrorInfo error_info;
bool op_complete = false; // NB: mu_ and cv_ also controls access to this!
// The to_open object is owned by the weak ref callback. Because this function
// waits for the callback to finish, the to_open object will be deallocated on
// the main thread before this function can return. The pointers it contains
// to stack variables will not leak.
OpenManifestEntryResource* to_open =
new OpenManifestEntryResource(url_key, info,
&error_info, &op_complete);
CHECK(to_open != NULL);
NaClLog(4, "PluginReverseInterface::OpenManifestEntry: %s\n",
url_key.c_str());
// This assumes we are not on the main thread. If false, we deadlock.
plugin::WeakRefCallOnMainThread(
anchor_,
0,
this,
&plugin::PluginReverseInterface::OpenManifestEntry_MainThreadContinuation,
to_open);
NaClLog(4,
"PluginReverseInterface::OpenManifestEntry:"
" waiting on main thread\n");
bool shutting_down;
do {
nacl::MutexLocker take(&mu_);
for (;;) {
NaClLog(4,
"PluginReverseInterface::OpenManifestEntry:"
" got lock, checking shutdown and completion: (%s, %s)\n",
shutting_down_ ? "yes" : "no",
op_complete ? "yes" : "no");
shutting_down = shutting_down_;
if (op_complete || shutting_down) {
NaClLog(4,
"PluginReverseInterface::OpenManifestEntry:"
" done!\n");
break;
}
NaClXCondVarWait(&cv_, &mu_);
}
} while (0);
if (shutting_down) {
NaClLog(4,
"PluginReverseInterface::OpenManifestEntry:"
" plugin is shutting down\n");
return false;
}
// out_desc has the returned descriptor if successful, else -1.
// The caller is responsible for not closing *out_desc. If it is
// closed prematurely, then another open could re-use the OS
// descriptor, confusing the opened_ map. If the caller is going to
// want to make a NaClDesc object and transfer it etc., then the
// caller should DUP the descriptor (but remember the original
// value) for use by the NaClDesc object, which closes when the
// object is destroyed.
NaClLog(4,
"PluginReverseInterface::OpenManifestEntry:"
" *out_desc = %d\n",
info->desc);
if (info->desc == -1) {
// TODO(bsy,ncbray): what else should we do with the error? This
// is a runtime error that may simply be a programming error in
// the untrusted code, or it may be something else wrong w/ the
// manifest.
NaClLog(4,
"OpenManifestEntry: failed for key %s, code %d (%s)\n",
url_key.c_str(),
error_info.error_code(),
error_info.message().c_str());
}
return true;
}
// Transfer point from OpenManifestEntry() which runs on the main thread
// (Some PPAPI actions -- like StreamAsFile -- can only run on the main thread).
// OpenManifestEntry() is waiting on a condvar for this continuation to
// complete. We Broadcast and awaken OpenManifestEntry() whenever we are done
// either here, or in a later MainThreadContinuation step, if there are
// multiple steps.
void PluginReverseInterface::OpenManifestEntry_MainThreadContinuation(
OpenManifestEntryResource* p,
int32_t err) {
OpenManifestEntryResource *open_cont;
UNREFERENCED_PARAMETER(err);
// CallOnMainThread continuations always called with err == PP_OK.
NaClLog(4, "Entered OpenManifestEntry_MainThreadContinuation\n");
std::string mapped_url;
PnaclOptions pnacl_options;
if (!manifest_->ResolveKey(p->url, &mapped_url,
&pnacl_options, p->error_info)) {
NaClLog(4, "OpenManifestEntry_MainThreadContinuation: ResolveKey failed\n");
// Failed, and error_info has the details on what happened. Wake
// up requesting thread -- we are done.
nacl::MutexLocker take(&mu_);
*p->op_complete_ptr = true; // done...
p->file_info->desc = -1; // but failed.
NaClXCondVarBroadcast(&cv_);
return;
}
NaClLog(4,
"OpenManifestEntry_MainThreadContinuation: "
"ResolveKey: %s -> %s (pnacl_translate(%d))\n",
p->url.c_str(), mapped_url.c_str(), pnacl_options.translate());
open_cont = new OpenManifestEntryResource(*p); // copy ctor!
CHECK(open_cont != NULL);
open_cont->url = mapped_url;
if (!pnacl_options.translate()) {
pp::CompletionCallback stream_cc = WeakRefNewCallback(
anchor_,
this,
&PluginReverseInterface::StreamAsFile_MainThreadContinuation,
open_cont);
// Normal files.
if (!PnaclUrls::IsPnaclComponent(mapped_url)) {
if (!plugin_->StreamAsFile(mapped_url,
stream_cc.pp_completion_callback())) {
NaClLog(4,
"OpenManifestEntry_MainThreadContinuation: "
"StreamAsFile failed\n");
nacl::MutexLocker take(&mu_);
*p->op_complete_ptr = true; // done...
p->file_info->desc = -1; // but failed.
p->error_info->SetReport(ERROR_MANIFEST_OPEN,
"ServiceRuntime: StreamAsFile failed");
NaClXCondVarBroadcast(&cv_);
return;
}
NaClLog(4,
"OpenManifestEntry_MainThreadContinuation: StreamAsFile okay\n");
} else {
// Special PNaCl support files, that are installed on the
// user machine.
int32_t fd = PnaclResources::GetPnaclFD(
plugin_,
PnaclUrls::PnaclComponentURLToFilename(mapped_url).c_str());
if (fd < 0) {
// We checked earlier if the pnacl component wasn't installed
// yet, so this shouldn't happen. At this point, we can't do much
// anymore, so just continue with an invalid fd.
NaClLog(4,
"OpenManifestEntry_MainThreadContinuation: "
"GetReadonlyPnaclFd failed\n");
// TODO(jvoung): Separate the error codes?
p->error_info->SetReport(ERROR_MANIFEST_OPEN,
"ServiceRuntime: GetPnaclFd failed");
}
nacl::MutexLocker take(&mu_);
*p->op_complete_ptr = true; // done!
// TODO(ncbray): enable the fast loading and validation paths for this
// type of file.
p->file_info->desc = fd;
NaClXCondVarBroadcast(&cv_);
NaClLog(4,
"OpenManifestEntry_MainThreadContinuation: GetPnaclFd okay\n");
}
} else {
// Requires PNaCl translation, but that's not supported.
NaClLog(4,
"OpenManifestEntry_MainThreadContinuation: "
"Requires PNaCl translation -- not supported\n");
nacl::MutexLocker take(&mu_);
*p->op_complete_ptr = true; // done...
p->file_info->desc = -1; // but failed.
p->error_info->SetReport(
ERROR_MANIFEST_OPEN,
"ServiceRuntime: Translating OpenManifestEntry files not supported");
NaClXCondVarBroadcast(&cv_);
return;
}
// p is deleted automatically
}
void PluginReverseInterface::StreamAsFile_MainThreadContinuation(
OpenManifestEntryResource* p,
int32_t result) {
NaClLog(4,
"Entered StreamAsFile_MainThreadContinuation\n");
nacl::MutexLocker take(&mu_);
if (result == PP_OK) {
NaClLog(4, "StreamAsFile_MainThreadContinuation: GetFileInfo(%s)\n",
p->url.c_str());
*p->file_info = plugin_->GetFileInfo(p->url);
NaClLog(4,
"StreamAsFile_MainThreadContinuation: PP_OK, desc %d\n",
p->file_info->desc);
} else {
NaClLog(4,
"StreamAsFile_MainThreadContinuation: !PP_OK, setting desc -1\n");
p->file_info->desc = -1;
p->error_info->SetReport(ERROR_MANIFEST_OPEN,
"Plugin StreamAsFile failed at callback");
}
*p->op_complete_ptr = true;
NaClXCondVarBroadcast(&cv_);
}
bool PluginReverseInterface::CloseManifestEntry(int32_t desc) {
bool op_complete = false;
bool op_result;
CloseManifestEntryResource* to_close =
new CloseManifestEntryResource(desc, &op_complete, &op_result);
bool shutting_down;
plugin::WeakRefCallOnMainThread(
anchor_,
0,
this,
&plugin::PluginReverseInterface::
CloseManifestEntry_MainThreadContinuation,
to_close);
// wait for completion or surf-away.
do {
nacl::MutexLocker take(&mu_);
for (;;) {
shutting_down = shutting_down_;
if (op_complete || shutting_down) {
break;
}
NaClXCondVarWait(&cv_, &mu_);
}
} while (0);
if (shutting_down) return false;
// op_result true if close was successful; false otherwise (e.g., bad desc).
return op_result;
}
void PluginReverseInterface::CloseManifestEntry_MainThreadContinuation(
CloseManifestEntryResource* cls,
int32_t err) {
UNREFERENCED_PARAMETER(err);
nacl::MutexLocker take(&mu_);
// TODO(bsy): once the plugin has a reliable way to report that the
// file usage is done -- and sel_ldr uses this RPC call -- we should
// tell the plugin that the associated resources can be freed.
*cls->op_result_ptr = true;
*cls->op_complete_ptr = true;
NaClXCondVarBroadcast(&cv_);
// cls automatically deleted
}
void PluginReverseInterface::ReportCrash() {
NaClLog(4, "PluginReverseInterface::ReportCrash\n");
if (crash_cb_.pp_completion_callback().func != NULL) {
NaClLog(4, "PluginReverseInterface::ReportCrash: invoking CB\n");
pp::Module::Get()->core()->CallOnMainThread(0, crash_cb_, PP_OK);
} else {
NaClLog(1,
"PluginReverseInterface::ReportCrash:"
" crash_cb_ not valid, skipping\n");
}
}
void PluginReverseInterface::ReportExitStatus(int exit_status) {
service_runtime_->set_exit_status(exit_status);
}
int64_t PluginReverseInterface::RequestQuotaForWrite(
nacl::string file_id, int64_t offset, int64_t bytes_to_write) {
NaClLog(4,
"PluginReverseInterface::RequestQuotaForWrite:"
" (file_id='%s', offset=%" NACL_PRId64 ", bytes_to_write=%"
NACL_PRId64 ")\n", file_id.c_str(), offset, bytes_to_write);
uint64_t file_key = STRTOULL(file_id.c_str(), NULL, 10);
nacl::MutexLocker take(&mu_);
if (quota_files_.count(file_key) == 0) {
// Look up failed to find the requested quota managed resource.
NaClLog(4, "PluginReverseInterface::RequestQuotaForWrite: failed...\n");
return 0;
}
// Because we now only support this interface for tempfiles which are not
// pepper objects, we can just do some crude quota enforcement here rather
// than calling out to pepper from the main thread.
if (offset + bytes_to_write >= kMaxTempQuota)
return 0;
return bytes_to_write;
}
void PluginReverseInterface::AddTempQuotaManagedFile(
const nacl::string& file_id) {
NaClLog(4, "PluginReverseInterface::AddTempQuotaManagedFile: "
"(file_id='%s')\n", file_id.c_str());
uint64_t file_key = STRTOULL(file_id.c_str(), NULL, 10);
nacl::MutexLocker take(&mu_);
quota_files_.insert(file_key);
}
ServiceRuntime::ServiceRuntime(Plugin* plugin,
const Manifest* manifest,
bool main_service_runtime,
pp::CompletionCallback init_done_cb,
pp::CompletionCallback crash_cb)
: plugin_(plugin),
main_service_runtime_(main_service_runtime),
reverse_service_(NULL),
anchor_(new nacl::WeakRefAnchor()),
rev_interface_(new PluginReverseInterface(anchor_, plugin,
manifest,
this,
init_done_cb, crash_cb)),
exit_status_(-1),
start_sel_ldr_done_(false) {
NaClSrpcChannelInitialize(&command_channel_);
NaClXMutexCtor(&mu_);
NaClXCondVarCtor(&cond_);
}
bool ServiceRuntime::InitCommunication(nacl::DescWrapper* nacl_desc,
ErrorInfo* error_info) {
NaClLog(4, "ServiceRuntime::InitCommunication"
" (this=%p, subprocess=%p)\n",
static_cast<void*>(this),
static_cast<void*>(subprocess_.get()));
// Create the command channel to the sel_ldr and load the nexe from nacl_desc.
if (!subprocess_->SetupCommandAndLoad(&command_channel_, nacl_desc)) {
error_info->SetReport(ERROR_SEL_LDR_COMMUNICATION_CMD_CHANNEL,
"ServiceRuntime: command channel creation failed");
return false;
}
// Hook up the reverse service channel. We are the IMC client, but
// provide SRPC service.
NaClDesc* out_conn_cap;
NaClSrpcResultCodes rpc_result =
NaClSrpcInvokeBySignature(&command_channel_,
"reverse_setup::h",
&out_conn_cap);
if (NACL_SRPC_RESULT_OK != rpc_result) {
error_info->SetReport(ERROR_SEL_LDR_COMMUNICATION_REV_SETUP,
"ServiceRuntime: reverse setup rpc failed");
return false;
}
// Get connection capability to service runtime where the IMC
// server/SRPC client is waiting for a rendezvous.
NaClLog(4, "ServiceRuntime: got 0x%" NACL_PRIxPTR "\n",
(uintptr_t) out_conn_cap);
nacl::DescWrapper* conn_cap = plugin_->wrapper_factory()->MakeGenericCleanup(
out_conn_cap);
if (conn_cap == NULL) {
error_info->SetReport(ERROR_SEL_LDR_COMMUNICATION_WRAPPER,
"ServiceRuntime: wrapper allocation failure");
return false;
}
out_conn_cap = NULL; // ownership passed
NaClLog(4, "ServiceRuntime::InitCommunication: starting reverse service\n");
reverse_service_ = new nacl::ReverseService(conn_cap, rev_interface_->Ref());
if (!reverse_service_->Start()) {
error_info->SetReport(ERROR_SEL_LDR_COMMUNICATION_REV_SERVICE,
"ServiceRuntime: starting reverse services failed");
return false;
}
// start the module. otherwise we cannot connect for multimedia
// subsystem since that is handled by user-level code (not secure!)
// in libsrpc.
int load_status = -1;
rpc_result =
NaClSrpcInvokeBySignature(&command_channel_,
"start_module::i",
&load_status);
if (NACL_SRPC_RESULT_OK != rpc_result) {
error_info->SetReport(ERROR_SEL_LDR_START_MODULE,
"ServiceRuntime: could not start nacl module");
return false;
}
NaClLog(4, "ServiceRuntime::InitCommunication (load_status=%d)\n",
load_status);
if (main_service_runtime_) {
plugin_->ReportSelLdrLoadStatus(load_status);
}
if (LOAD_OK != load_status) {
error_info->SetReport(
ERROR_SEL_LDR_START_STATUS,
NaClErrorString(static_cast<NaClErrorCode>(load_status)));
return false;
}
return true;
}
bool ServiceRuntime::StartSelLdr(const SelLdrStartParams& params) {
NaClLog(4, "ServiceRuntime::Start\n");
nacl::scoped_ptr<SelLdrLauncherChrome>
tmp_subprocess(new SelLdrLauncherChrome());
if (NULL == tmp_subprocess.get()) {
NaClLog(LOG_ERROR, "ServiceRuntime::Start (subprocess create failed)\n");
params.error_info->SetReport(
ERROR_SEL_LDR_CREATE_LAUNCHER,
"ServiceRuntime: failed to create sel_ldr launcher");
return false;
}
nacl::string error_message;
bool started = tmp_subprocess->Start(plugin_->pp_instance(),
params.url.c_str(),
params.uses_irt,
params.uses_ppapi,
params.enable_dev_interfaces,
params.enable_dyncode_syscalls,
params.enable_exception_handling,
params.enable_crash_throttling,
&error_message);
if (!started) {
NaClLog(LOG_ERROR, "ServiceRuntime::Start (start failed)\n");
params.error_info->SetReportWithConsoleOnlyError(
ERROR_SEL_LDR_LAUNCH,
"ServiceRuntime: failed to start",
error_message);
return false;
}
subprocess_.reset(tmp_subprocess.release());
NaClLog(4, "ServiceRuntime::StartSelLdr (return 1)\n");
return true;
}
void ServiceRuntime::WaitForSelLdrStart() {
nacl::MutexLocker take(&mu_);
while(!start_sel_ldr_done_) {
NaClXCondVarWait(&cond_, &mu_);
}
}
void ServiceRuntime::SignalStartSelLdrDone() {
nacl::MutexLocker take(&mu_);
start_sel_ldr_done_ = true;
NaClXCondVarSignal(&cond_);
}
bool ServiceRuntime::LoadNexeAndStart(nacl::DescWrapper* nacl_desc,
ErrorInfo* error_info,
const pp::CompletionCallback& crash_cb) {
NaClLog(4, "ServiceRuntime::LoadNexeAndStart (nacl_desc=%p)\n",
reinterpret_cast<void*>(nacl_desc));
if (!InitCommunication(nacl_desc, error_info)) {
// On a load failure the service runtime does not crash itself to
// avoid a race where the no-more-senders error on the reverse
// channel esrvice thread might cause the crash-detection logic to
// kick in before the start_module RPC reply has been received. So
// we induce a service runtime crash here. We do not release
// subprocess_ since it's needed to collect crash log output after
// the error is reported.
Log(LOG_FATAL, "reap logs");
if (NULL == reverse_service_) {
// No crash detector thread.
NaClLog(LOG_ERROR, "scheduling to get crash log\n");
pp::Module::Get()->core()->CallOnMainThread(0, crash_cb, PP_OK);
NaClLog(LOG_ERROR, "should fire soon\n");
} else {
NaClLog(LOG_ERROR, "Reverse service thread will pick up crash log\n");
}
return false;
}
NaClLog(4, "ServiceRuntime::LoadNexeAndStart (return 1)\n");
return true;
}
SrpcClient* ServiceRuntime::SetupAppChannel() {
NaClLog(4, "ServiceRuntime::SetupAppChannel (subprocess_=%p)\n",
reinterpret_cast<void*>(subprocess_.get()));
nacl::DescWrapper* connect_desc = subprocess_->socket_addr()->Connect();
if (NULL == connect_desc) {
NaClLog(LOG_ERROR, "ServiceRuntime::SetupAppChannel (connect failed)\n");
return NULL;
} else {
NaClLog(4, "ServiceRuntime::SetupAppChannel (conect_desc=%p)\n",
static_cast<void*>(connect_desc));
SrpcClient* srpc_client = SrpcClient::New(connect_desc);
NaClLog(4, "ServiceRuntime::SetupAppChannel (srpc_client=%p)\n",
static_cast<void*>(srpc_client));
delete connect_desc;
return srpc_client;
}
}
bool ServiceRuntime::Log(int severity, const nacl::string& msg) {
NaClSrpcResultCodes rpc_result =
NaClSrpcInvokeBySignature(&command_channel_,
"log:is:",
severity,
strdup(msg.c_str()));
return (NACL_SRPC_RESULT_OK == rpc_result);
}
void ServiceRuntime::Shutdown() {
rev_interface_->ShutDown();
anchor_->Abandon();
// Abandon callbacks, tell service threads to quit if they were
// blocked waiting for main thread operations to finish. Note that
// some callbacks must still await their completion event, e.g.,
// CallOnMainThread must still wait for the time out, or I/O events
// must finish, so resources associated with pending events cannot
// be deallocated.
// Note that this does waitpid() to get rid of any zombie subprocess.
subprocess_.reset(NULL);
NaClSrpcDtor(&command_channel_);
// subprocess_ has been shut down, but threads waiting on messages
// from the service runtime may not have noticed yet. The low-level
// NaClSimpleRevService code takes care to refcount the data objects
// that it needs, and reverse_service_ is also refcounted. We wait
// for the service threads to get their EOF indications.
if (reverse_service_ != NULL) {
reverse_service_->WaitForServiceThreadsToExit();
reverse_service_->Unref();
reverse_service_ = NULL;
}
}
ServiceRuntime::~ServiceRuntime() {
NaClLog(4, "ServiceRuntime::~ServiceRuntime (this=%p)\n",
static_cast<void*>(this));
// We do this just in case Shutdown() was not called.
subprocess_.reset(NULL);
if (reverse_service_ != NULL) {
reverse_service_->Unref();
}
rev_interface_->Unref();
anchor_->Unref();
NaClCondVarDtor(&cond_);
NaClMutexDtor(&mu_);
}
void ServiceRuntime::set_exit_status(int exit_status) {
nacl::MutexLocker take(&mu_);
if (main_service_runtime_)
plugin_->set_exit_status(exit_status & 0xff);
}
nacl::string ServiceRuntime::GetCrashLogOutput() {
if (NULL != subprocess_.get()) {
return subprocess_->GetCrashLogOutput();
} else {
return std::string();
}
}
} // namespace plugin