cameraserver: Wrap calls to IPCThreadState functions to factor in different transports.
Add a wrapper around calls to IPCThreadState to
account for the fact that remote HIDL calls may use binder function
implementations internally.Therefore, we need to know whether we are on
a binder / hwbinder thread and call the appropriate IPCThreadState /
hardware::IPCThreadState function internally.
Bug: 110364143
Test: GCA
Test: Third party app
Test: camera CTS (no new failures).
Change-Id: Ibad03fafd2ccc53a5352a6df45cf8f641bc7a3bf
Signed-off-by: Jayant Chowdhary <jchowdhary@google.com>
diff --git a/services/camera/libcameraservice/Android.bp b/services/camera/libcameraservice/Android.bp
index 706ce3a..a1163ed 100644
--- a/services/camera/libcameraservice/Android.bp
+++ b/services/camera/libcameraservice/Android.bp
@@ -52,6 +52,7 @@
"device3/Camera3StreamSplitter.cpp",
"device3/DistortionMapper.cpp",
"gui/RingBufferConsumer.cpp",
+ "utils/CameraThreadState.cpp",
"utils/CameraTraces.cpp",
"utils/AutoConditionLock.cpp",
"utils/TagMonitor.cpp",
@@ -72,6 +73,7 @@
"libfmq",
"libgui",
"libhardware",
+ "libhwbinder",
"libhidlbase",
"libhidltransport",
"libjpeg",
diff --git a/services/camera/libcameraservice/CameraService.cpp b/services/camera/libcameraservice/CameraService.cpp
index fbd80e6..e69ce1f 100644
--- a/services/camera/libcameraservice/CameraService.cpp
+++ b/services/camera/libcameraservice/CameraService.cpp
@@ -69,6 +69,7 @@
#include "api2/CameraDeviceClient.h"
#include "utils/CameraTraces.h"
#include "utils/TagMonitor.h"
+#include "utils/CameraThreadState.h"
namespace {
const char* kPermissionServiceName = "permission";
@@ -325,7 +326,7 @@
hardware::camera2::ICameraDeviceCallbacks::ERROR_CAMERA_DISCONNECTED,
CaptureResultExtras{});
// Ensure not in binder RPC so client disconnect PID checks work correctly
- LOG_ALWAYS_FATAL_IF(getCallingPid() != getpid(),
+ LOG_ALWAYS_FATAL_IF(CameraThreadState::getCallingPid() != getpid(),
"onDeviceStatusChanged must be called from the camera service process!");
clientToDisconnect->disconnect();
}
@@ -491,8 +492,8 @@
strerror(-res), res);
}
- int callingPid = getCallingPid();
- int callingUid = getCallingUid();
+ int callingPid = CameraThreadState::getCallingPid();
+ int callingUid = CameraThreadState::getCallingUid();
std::vector<int32_t> tagsRemoved;
// If it's not calling from cameraserver, check the permission.
if ((callingPid != getpid()) &&
@@ -522,14 +523,6 @@
return ret;
}
-int CameraService::getCallingPid() {
- return IPCThreadState::self()->getCallingPid();
-}
-
-int CameraService::getCallingUid() {
- return IPCThreadState::self()->getCallingUid();
-}
-
String8 CameraService::getFormattedCurrentTime() {
time_t now = time(nullptr);
char formattedTime[64];
@@ -754,7 +747,7 @@
}
Status CameraService::initializeShimMetadata(int cameraId) {
- int uid = getCallingUid();
+ int uid = CameraThreadState::getCallingUid();
String16 internalPackageName("cameraserver");
String8 id = String8::format("%d", cameraId);
@@ -803,9 +796,9 @@
}
}
- int64_t token = IPCThreadState::self()->clearCallingIdentity();
+ int64_t token = CameraThreadState::clearCallingIdentity();
ret = initializeShimMetadata(cameraId);
- IPCThreadState::self()->restoreCallingIdentity(token);
+ CameraThreadState::restoreCallingIdentity(token);
if (!ret.isOk()) {
// Error already logged by callee
return ret;
@@ -862,7 +855,7 @@
}
#endif // __BRILLO__
- int callingPid = getCallingPid();
+ int callingPid = CameraThreadState::getCallingPid();
if (!mInitialized) {
ALOGE("CameraService::connect X (PID %d) rejected (camera HAL module not loaded)",
@@ -896,8 +889,8 @@
Status CameraService::validateClientPermissionsLocked(const String8& cameraId,
const String8& clientName8, int& clientUid, int& clientPid,
/*out*/int& originalClientPid) const {
- int callingPid = getCallingPid();
- int callingUid = getCallingUid();
+ int callingPid = CameraThreadState::getCallingPid();
+ int callingUid = CameraThreadState::getCallingUid();
// Check if we can trust clientUid
if (clientUid == USE_CALLING_UID) {
@@ -966,7 +959,7 @@
status_t CameraService::checkIfDeviceIsUsable(const String8& cameraId) const {
auto cameraState = getCameraState(cameraId);
- int callingPid = getCallingPid();
+ int callingPid = CameraThreadState::getCallingPid();
if (cameraState == nullptr) {
ALOGE("CameraService::connect X (PID %d) rejected (invalid camera ID %s)", callingPid,
cameraId.string());
@@ -1170,7 +1163,7 @@
mServiceLock.unlock();
// Clear caller identity temporarily so client disconnect PID checks work correctly
- int64_t token = IPCThreadState::self()->clearCallingIdentity();
+ int64_t token = CameraThreadState::clearCallingIdentity();
// Destroy evicted clients
for (auto& i : evictedClients) {
@@ -1178,7 +1171,7 @@
i->getValue()->disconnect(); // Clients will remove themselves from the active client list
}
- IPCThreadState::self()->restoreCallingIdentity(token);
+ CameraThreadState::restoreCallingIdentity(token);
for (const auto& i : evictedClients) {
ALOGV("%s: Waiting for disconnect to complete for client for device %s (PID %" PRId32 ")",
@@ -1231,7 +1224,7 @@
/*shimUpdateOnly*/ false, /*out*/client);
if(!ret.isOk()) {
- logRejected(id, getCallingPid(), String8(clientPackageName),
+ logRejected(id, CameraThreadState::getCallingPid(), String8(clientPackageName),
ret.toString8());
return ret;
}
@@ -1258,7 +1251,7 @@
/*out*/client);
if(!ret.isOk()) {
- logRejected(id, getCallingPid(), String8(clientPackageName),
+ logRejected(id, CameraThreadState::getCallingPid(), String8(clientPackageName),
ret.toString8());
return ret;
}
@@ -1285,7 +1278,7 @@
clientUid, USE_CALLING_PID, API_2, /*shimUpdateOnly*/ false, /*out*/client);
if(!ret.isOk()) {
- logRejected(id, getCallingPid(), String8(clientPackageName),
+ logRejected(id, CameraThreadState::getCallingPid(), String8(clientPackageName),
ret.toString8());
return ret;
}
@@ -1466,7 +1459,7 @@
}
String8 id = String8(cameraId.string());
- int uid = getCallingUid();
+ int uid = CameraThreadState::getCallingUid();
// verify id is valid.
auto state = getCameraState(id);
@@ -1913,13 +1906,13 @@
mServiceLock.unlock();
// Clear caller identity temporarily so client disconnect PID checks work correctly
- int64_t token = IPCThreadState::self()->clearCallingIdentity();
+ int64_t token = CameraThreadState::clearCallingIdentity();
for (auto& i : evicted) {
i->disconnect();
}
- IPCThreadState::self()->restoreCallingIdentity(token);
+ CameraThreadState::restoreCallingIdentity(token);
// Reacquire mServiceLock
mServiceLock.lock();
@@ -1987,7 +1980,7 @@
status_t CameraService::onTransact(uint32_t code, const Parcel& data, Parcel* reply,
uint32_t flags) {
- const int pid = getCallingPid();
+ const int pid = CameraThreadState::getCallingPid();
const int selfPid = getpid();
// Permission checks
@@ -2022,7 +2015,7 @@
// permissions to notify the camera service about system events
if (!checkCallingPermission(
String16("android.permission.CAMERA_SEND_SYSTEM_EVENTS"))) {
- const int uid = getCallingUid();
+ const int uid = CameraThreadState::getCallingUid();
ALOGE("Permission Denial: cannot send updates to camera service about system"
" events from pid=%d, uid=%d", pid, uid);
return PERMISSION_DENIED;
@@ -2119,7 +2112,7 @@
servicePid),
mCameraId(api1CameraId)
{
- int callingPid = getCallingPid();
+ int callingPid = CameraThreadState::getCallingPid();
LOG1("Client::Client E (pid %d, id %d)", callingPid, mCameraId);
mRemoteCallback = cameraClient;
@@ -2228,7 +2221,7 @@
// No dumping of clients directly over Binder,
// must go through CameraService::dump
android_errorWriteWithInfoLog(SN_EVENT_LOG_ID, "26265403",
- IPCThreadState::self()->getCallingUid(), NULL, 0);
+ CameraThreadState::getCallingUid(), NULL, 0);
return OK;
}
@@ -2365,7 +2358,7 @@
// Reset the client PID to allow server-initiated disconnect,
// and to prevent further calls by client.
- mClientPid = getCallingPid();
+ mClientPid = CameraThreadState::getCallingPid();
CaptureResultExtras resultExtras; // a dummy result (invalid)
notifyError(hardware::camera2::ICameraDeviceCallbacks::ERROR_CAMERA_DISABLED, resultExtras);
disconnect();
@@ -2726,8 +2719,8 @@
if (checkCallingPermission(String16("android.permission.DUMP")) == false) {
dprintf(fd, "Permission Denial: can't dump CameraService from pid=%d, uid=%d\n",
- getCallingPid(),
- getCallingUid());
+ CameraThreadState::getCallingPid(),
+ CameraThreadState::getCallingUid());
return NO_ERROR;
}
bool locked = tryLock(mServiceLock);
@@ -2900,7 +2893,7 @@
* binder driver
*/
// PID here is approximate and can be wrong.
- logClientDied(getCallingPid(), String8("Binder died unexpectedly"));
+ logClientDied(CameraThreadState::getCallingPid(), String8("Binder died unexpectedly"));
// check torch client
handleTorchClientBinderDied(who);
diff --git a/services/camera/libcameraservice/CameraService.h b/services/camera/libcameraservice/CameraService.h
index 47ad8af..80d9ef4 100644
--- a/services/camera/libcameraservice/CameraService.h
+++ b/services/camera/libcameraservice/CameraService.h
@@ -836,10 +836,6 @@
// Prints the shell command help
status_t printHelp(int out);
- static int getCallingPid();
-
- static int getCallingUid();
-
/**
* Get the current system time as a formatted string.
*/
diff --git a/services/camera/libcameraservice/api1/Camera2Client.cpp b/services/camera/libcameraservice/api1/Camera2Client.cpp
index bf18c48..c250628 100644
--- a/services/camera/libcameraservice/api1/Camera2Client.cpp
+++ b/services/camera/libcameraservice/api1/Camera2Client.cpp
@@ -33,6 +33,7 @@
#include "api1/client2/CaptureSequencer.h"
#include "api1/client2/CallbackProcessor.h"
#include "api1/client2/ZslProcessor.h"
+#include "utils/CameraThreadState.h"
#define ALOG1(...) ALOGD_IF(gLogLevel >= 1, __VA_ARGS__);
#define ALOG2(...) ALOGD_IF(gLogLevel >= 2, __VA_ARGS__);
@@ -40,10 +41,6 @@
namespace android {
using namespace camera2;
-static int getCallingPid() {
- return IPCThreadState::self()->getCallingPid();
-}
-
// Interface used by CameraService
Camera2Client::Camera2Client(const sp<CameraService>& cameraService,
@@ -398,7 +395,7 @@
binder::Status res = binder::Status::ok();
// Allow both client and the cameraserver to disconnect at all times
- int callingPid = getCallingPid();
+ int callingPid = CameraThreadState::getCallingPid();
if (callingPid != mClientPid && callingPid != mServicePid) return res;
if (mDevice == 0) return res;
@@ -463,14 +460,14 @@
ALOGV("%s: E", __FUNCTION__);
Mutex::Autolock icl(mBinderSerializationLock);
- if (mClientPid != 0 && getCallingPid() != mClientPid) {
+ if (mClientPid != 0 && CameraThreadState::getCallingPid() != mClientPid) {
ALOGE("%s: Camera %d: Connection attempt from pid %d; "
"current locked to pid %d", __FUNCTION__,
- mCameraId, getCallingPid(), mClientPid);
+ mCameraId, CameraThreadState::getCallingPid(), mClientPid);
return BAD_VALUE;
}
- mClientPid = getCallingPid();
+ mClientPid = CameraThreadState::getCallingPid();
mRemoteCallback = client;
mSharedCameraCallbacks = client;
@@ -483,16 +480,16 @@
ALOGV("%s: E", __FUNCTION__);
Mutex::Autolock icl(mBinderSerializationLock);
ALOGV("%s: Camera %d: Lock call from pid %d; current client pid %d",
- __FUNCTION__, mCameraId, getCallingPid(), mClientPid);
+ __FUNCTION__, mCameraId, CameraThreadState::getCallingPid(), mClientPid);
if (mClientPid == 0) {
- mClientPid = getCallingPid();
+ mClientPid = CameraThreadState::getCallingPid();
return OK;
}
- if (mClientPid != getCallingPid()) {
+ if (mClientPid != CameraThreadState::getCallingPid()) {
ALOGE("%s: Camera %d: Lock call from pid %d; currently locked to pid %d",
- __FUNCTION__, mCameraId, getCallingPid(), mClientPid);
+ __FUNCTION__, mCameraId, CameraThreadState::getCallingPid(), mClientPid);
return EBUSY;
}
@@ -504,9 +501,9 @@
ALOGV("%s: E", __FUNCTION__);
Mutex::Autolock icl(mBinderSerializationLock);
ALOGV("%s: Camera %d: Unlock call from pid %d; current client pid %d",
- __FUNCTION__, mCameraId, getCallingPid(), mClientPid);
+ __FUNCTION__, mCameraId, CameraThreadState::getCallingPid(), mClientPid);
- if (mClientPid == getCallingPid()) {
+ if (mClientPid == CameraThreadState::getCallingPid()) {
SharedParameters::Lock l(mParameters);
if (l.mParameters.state == Parameters::RECORD ||
l.mParameters.state == Parameters::VIDEO_SNAPSHOT) {
@@ -520,7 +517,7 @@
}
ALOGE("%s: Camera %d: Unlock call from pid %d; currently locked to pid %d",
- __FUNCTION__, mCameraId, getCallingPid(), mClientPid);
+ __FUNCTION__, mCameraId, CameraThreadState::getCallingPid(), mClientPid);
return EBUSY;
}
@@ -1574,7 +1571,7 @@
ALOGV("%s: Camera %d", __FUNCTION__, mCameraId);
Mutex::Autolock icl(mBinderSerializationLock);
// The camera service can unconditionally get the parameters at all times
- if (getCallingPid() != mServicePid && checkPid(__FUNCTION__) != OK) return String8();
+ if (CameraThreadState::getCallingPid() != mServicePid && checkPid(__FUNCTION__) != OK) return String8();
SharedParameters::ReadLock l(mParameters);
diff --git a/services/camera/libcameraservice/api1/CameraClient.cpp b/services/camera/libcameraservice/api1/CameraClient.cpp
index ce44efe..d65ac7b 100644
--- a/services/camera/libcameraservice/api1/CameraClient.cpp
+++ b/services/camera/libcameraservice/api1/CameraClient.cpp
@@ -25,16 +25,13 @@
#include "api1/CameraClient.h"
#include "device1/CameraHardwareInterface.h"
#include "CameraService.h"
+#include "utils/CameraThreadState.h"
namespace android {
#define LOG1(...) ALOGD_IF(gLogLevel >= 1, __VA_ARGS__);
#define LOG2(...) ALOGD_IF(gLogLevel >= 2, __VA_ARGS__);
-static int getCallingPid() {
- return IPCThreadState::self()->getCallingPid();
-}
-
CameraClient::CameraClient(const sp<CameraService>& cameraService,
const sp<hardware::ICameraClient>& cameraClient,
const String16& clientPackageName,
@@ -45,7 +42,7 @@
String8::format("%d", cameraId), cameraId, cameraFacing, clientPid,
clientUid, servicePid)
{
- int callingPid = getCallingPid();
+ int callingPid = CameraThreadState::getCallingPid();
LOG1("CameraClient::CameraClient E (pid %d, id %d)", callingPid, cameraId);
mHardware = NULL;
@@ -63,7 +60,7 @@
status_t CameraClient::initialize(sp<CameraProviderManager> manager,
const String8& /*monitorTags*/) {
- int callingPid = getCallingPid();
+ int callingPid = CameraThreadState::getCallingPid();
status_t res;
LOG1("CameraClient::initialize E (pid %d, id %d)", callingPid, mCameraId);
@@ -104,7 +101,7 @@
// tear down the client
CameraClient::~CameraClient() {
mDestructionStarted = true;
- int callingPid = getCallingPid();
+ int callingPid = CameraThreadState::getCallingPid();
LOG1("CameraClient::~CameraClient E (pid %d, this %p)", callingPid, this);
disconnect();
@@ -147,7 +144,7 @@
// ----------------------------------------------------------------------------
status_t CameraClient::checkPid() const {
- int callingPid = getCallingPid();
+ int callingPid = CameraThreadState::getCallingPid();
if (callingPid == mClientPid) return NO_ERROR;
ALOGW("attempt to use a locked camera from a different process"
@@ -157,7 +154,8 @@
status_t CameraClient::checkPidAndHardware() const {
if (mHardware == 0) {
- ALOGE("attempt to use a camera after disconnect() (pid %d)", getCallingPid());
+ ALOGE("attempt to use a camera after disconnect() (pid %d)",
+ CameraThreadState::getCallingPid());
return INVALID_OPERATION;
}
status_t result = checkPid();
@@ -166,7 +164,7 @@
}
status_t CameraClient::lock() {
- int callingPid = getCallingPid();
+ int callingPid = CameraThreadState::getCallingPid();
LOG1("lock (pid %d)", callingPid);
Mutex::Autolock lock(mLock);
@@ -181,7 +179,7 @@
}
status_t CameraClient::unlock() {
- int callingPid = getCallingPid();
+ int callingPid = CameraThreadState::getCallingPid();
LOG1("unlock (pid %d)", callingPid);
Mutex::Autolock lock(mLock);
@@ -203,7 +201,7 @@
// connect a new client to the camera
status_t CameraClient::connect(const sp<hardware::ICameraClient>& client) {
- int callingPid = getCallingPid();
+ int callingPid = CameraThreadState::getCallingPid();
LOG1("connect E (pid %d)", callingPid);
Mutex::Autolock lock(mLock);
@@ -239,7 +237,7 @@
}
binder::Status CameraClient::disconnect() {
- int callingPid = getCallingPid();
+ int callingPid = CameraThreadState::getCallingPid();
LOG1("disconnect E (pid %d)", callingPid);
Mutex::Autolock lock(mLock);
@@ -333,7 +331,7 @@
status_t CameraClient::setPreviewTarget(
const sp<IGraphicBufferProducer>& bufferProducer) {
LOG1("setPreviewTarget(%p) (pid %d)", bufferProducer.get(),
- getCallingPid());
+ CameraThreadState::getCallingPid());
sp<IBinder> binder;
sp<ANativeWindow> window;
@@ -350,7 +348,7 @@
// set the preview callback flag to affect how the received frames from
// preview are handled.
void CameraClient::setPreviewCallbackFlag(int callback_flag) {
- LOG1("setPreviewCallbackFlag(%d) (pid %d)", callback_flag, getCallingPid());
+ LOG1("setPreviewCallbackFlag(%d) (pid %d)", callback_flag, CameraThreadState::getCallingPid());
Mutex::Autolock lock(mLock);
if (checkPidAndHardware() != NO_ERROR) return;
@@ -371,13 +369,13 @@
// start preview mode
status_t CameraClient::startPreview() {
- LOG1("startPreview (pid %d)", getCallingPid());
+ LOG1("startPreview (pid %d)", CameraThreadState::getCallingPid());
return startCameraMode(CAMERA_PREVIEW_MODE);
}
// start recording mode
status_t CameraClient::startRecording() {
- LOG1("startRecording (pid %d)", getCallingPid());
+ LOG1("startRecording (pid %d)", CameraThreadState::getCallingPid());
return startCameraMode(CAMERA_RECORDING_MODE);
}
@@ -460,7 +458,7 @@
// stop preview mode
void CameraClient::stopPreview() {
- LOG1("stopPreview (pid %d)", getCallingPid());
+ LOG1("stopPreview (pid %d)", CameraThreadState::getCallingPid());
Mutex::Autolock lock(mLock);
if (checkPidAndHardware() != NO_ERROR) return;
@@ -476,7 +474,7 @@
// stop recording mode
void CameraClient::stopRecording() {
- LOG1("stopRecording (pid %d)", getCallingPid());
+ LOG1("stopRecording (pid %d)", CameraThreadState::getCallingPid());
{
Mutex::Autolock lock(mLock);
if (checkPidAndHardware() != NO_ERROR) return;
@@ -502,7 +500,7 @@
if (checkPidAndHardware() != NO_ERROR) return;
if (mem == nullptr) {
android_errorWriteWithInfoLog(CameraService::SN_EVENT_LOG_ID, "26164272",
- IPCThreadState::self()->getCallingUid(), nullptr, 0);
+ CameraThreadState::getCallingUid(), nullptr, 0);
return;
}
@@ -614,7 +612,7 @@
}
bool CameraClient::previewEnabled() {
- LOG1("previewEnabled (pid %d)", getCallingPid());
+ LOG1("previewEnabled (pid %d)", CameraThreadState::getCallingPid());
Mutex::Autolock lock(mLock);
if (checkPidAndHardware() != NO_ERROR) return false;
@@ -622,7 +620,7 @@
}
bool CameraClient::recordingEnabled() {
- LOG1("recordingEnabled (pid %d)", getCallingPid());
+ LOG1("recordingEnabled (pid %d)", CameraThreadState::getCallingPid());
Mutex::Autolock lock(mLock);
if (checkPidAndHardware() != NO_ERROR) return false;
@@ -630,7 +628,7 @@
}
status_t CameraClient::autoFocus() {
- LOG1("autoFocus (pid %d)", getCallingPid());
+ LOG1("autoFocus (pid %d)", CameraThreadState::getCallingPid());
Mutex::Autolock lock(mLock);
status_t result = checkPidAndHardware();
@@ -640,7 +638,7 @@
}
status_t CameraClient::cancelAutoFocus() {
- LOG1("cancelAutoFocus (pid %d)", getCallingPid());
+ LOG1("cancelAutoFocus (pid %d)", CameraThreadState::getCallingPid());
Mutex::Autolock lock(mLock);
status_t result = checkPidAndHardware();
@@ -651,7 +649,7 @@
// take a picture - image is returned in callback
status_t CameraClient::takePicture(int msgType) {
- LOG1("takePicture (pid %d): 0x%x", getCallingPid(), msgType);
+ LOG1("takePicture (pid %d): 0x%x", CameraThreadState::getCallingPid(), msgType);
Mutex::Autolock lock(mLock);
status_t result = checkPidAndHardware();
@@ -680,7 +678,7 @@
// set preview/capture parameters - key/value pairs
status_t CameraClient::setParameters(const String8& params) {
- LOG1("setParameters (pid %d) (%s)", getCallingPid(), params.string());
+ LOG1("setParameters (pid %d) (%s)", CameraThreadState::getCallingPid(), params.string());
Mutex::Autolock lock(mLock);
status_t result = checkPidAndHardware();
@@ -695,16 +693,18 @@
String8 CameraClient::getParameters() const {
Mutex::Autolock lock(mLock);
// The camera service can unconditionally get the parameters at all times
- if (getCallingPid() != mServicePid && checkPidAndHardware() != NO_ERROR) return String8();
+ if (CameraThreadState::getCallingPid() != mServicePid && checkPidAndHardware() != NO_ERROR) {
+ return String8();
+ }
String8 params(mHardware->getParameters().flatten());
- LOG1("getParameters (pid %d) (%s)", getCallingPid(), params.string());
+ LOG1("getParameters (pid %d) (%s)", CameraThreadState::getCallingPid(), params.string());
return params;
}
// enable shutter sound
status_t CameraClient::enableShutterSound(bool enable) {
- LOG1("enableShutterSound (pid %d)", getCallingPid());
+ LOG1("enableShutterSound (pid %d)", CameraThreadState::getCallingPid());
status_t result = checkPidAndHardware();
if (result != NO_ERROR) return result;
@@ -719,7 +719,7 @@
}
status_t CameraClient::sendCommand(int32_t cmd, int32_t arg1, int32_t arg2) {
- LOG1("sendCommand (pid %d)", getCallingPid());
+ LOG1("sendCommand (pid %d)", CameraThreadState::getCallingPid());
int orientation;
Mutex::Autolock lock(mLock);
status_t result = checkPidAndHardware();
diff --git a/services/camera/libcameraservice/api2/CameraDeviceClient.cpp b/services/camera/libcameraservice/api2/CameraDeviceClient.cpp
index 84428c2..dd2ef99 100644
--- a/services/camera/libcameraservice/api2/CameraDeviceClient.cpp
+++ b/services/camera/libcameraservice/api2/CameraDeviceClient.cpp
@@ -19,6 +19,7 @@
//#define LOG_NDEBUG 0
#include <cutils/properties.h>
+#include <utils/CameraThreadState.h>
#include <utils/Log.h>
#include <utils/Trace.h>
#include <gui/Surface.h>
@@ -1724,7 +1725,7 @@
// TODO: move to Camera2ClientBase
bool CameraDeviceClient::enforceRequestPermissions(CameraMetadata& metadata) {
- const int pid = IPCThreadState::self()->getCallingPid();
+ const int pid = CameraThreadState::getCallingPid();
const int selfPid = getpid();
camera_metadata_entry_t entry;
@@ -1763,7 +1764,7 @@
String16 permissionString =
String16("android.permission.CAMERA_DISABLE_TRANSMIT_LED");
if (!checkCallingPermission(permissionString)) {
- const int uid = IPCThreadState::self()->getCallingUid();
+ const int uid = CameraThreadState::getCallingUid();
ALOGE("Permission Denial: "
"can't disable transmit LED pid=%d, uid=%d", pid, uid);
return false;
diff --git a/services/camera/libcameraservice/common/Camera2ClientBase.cpp b/services/camera/libcameraservice/common/Camera2ClientBase.cpp
index aeea473..78feb3e 100644
--- a/services/camera/libcameraservice/common/Camera2ClientBase.cpp
+++ b/services/camera/libcameraservice/common/Camera2ClientBase.cpp
@@ -32,14 +32,11 @@
#include "api2/CameraDeviceClient.h"
#include "device3/Camera3Device.h"
+#include "utils/CameraThreadState.h"
namespace android {
using namespace camera2;
-static int getCallingPid() {
- return IPCThreadState::self()->getCallingPid();
-}
-
// Interface used by CameraService
template <typename TClientBase>
@@ -71,7 +68,7 @@
status_t Camera2ClientBase<TClientBase>::checkPid(const char* checkLocation)
const {
- int callingPid = getCallingPid();
+ int callingPid = CameraThreadState::getCallingPid();
if (callingPid == TClientBase::mClientPid) return NO_ERROR;
ALOGE("%s: attempt to use a locked camera from a different process"
@@ -186,7 +183,7 @@
binder::Status res = binder::Status::ok();
// Allow both client and the media server to disconnect at all times
- int callingPid = getCallingPid();
+ int callingPid = CameraThreadState::getCallingPid();
if (callingPid != TClientBase::mClientPid &&
callingPid != TClientBase::mServicePid) return res;
@@ -217,18 +214,18 @@
Mutex::Autolock icl(mBinderSerializationLock);
if (TClientBase::mClientPid != 0 &&
- getCallingPid() != TClientBase::mClientPid) {
+ CameraThreadState::getCallingPid() != TClientBase::mClientPid) {
ALOGE("%s: Camera %s: Connection attempt from pid %d; "
"current locked to pid %d",
__FUNCTION__,
TClientBase::mCameraIdStr.string(),
- getCallingPid(),
+ CameraThreadState::getCallingPid(),
TClientBase::mClientPid);
return BAD_VALUE;
}
- TClientBase::mClientPid = getCallingPid();
+ TClientBase::mClientPid = CameraThreadState::getCallingPid();
TClientBase::mRemoteCallback = client;
mSharedCameraCallbacks = client;
diff --git a/services/camera/libcameraservice/device3/Camera3Device.cpp b/services/camera/libcameraservice/device3/Camera3Device.cpp
index 48e38bb..6e61be2 100644
--- a/services/camera/libcameraservice/device3/Camera3Device.cpp
+++ b/services/camera/libcameraservice/device3/Camera3Device.cpp
@@ -56,6 +56,7 @@
#include "device3/Camera3DummyStream.h"
#include "device3/Camera3SharedOutputStream.h"
#include "CameraService.h"
+#include "utils/CameraThreadState.h"
using namespace android::camera3;
using namespace android::hardware::camera;
@@ -1701,7 +1702,7 @@
if (templateId <= 0 || templateId >= CAMERA3_TEMPLATE_COUNT) {
android_errorWriteWithInfoLog(CameraService::SN_EVENT_LOG_ID, "26866110",
- IPCThreadState::self()->getCallingUid(), nullptr, 0);
+ CameraThreadState::getCallingUid(), nullptr, 0);
return BAD_VALUE;
}
diff --git a/services/camera/libcameraservice/utils/CameraThreadState.cpp b/services/camera/libcameraservice/utils/CameraThreadState.cpp
new file mode 100644
index 0000000..b9e344b
--- /dev/null
+++ b/services/camera/libcameraservice/utils/CameraThreadState.cpp
@@ -0,0 +1,54 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "CameraThreadState.h"
+#include <binder/IPCThreadState.h>
+#include <hwbinder/IPCThreadState.h>
+#include <unistd.h>
+
+namespace android {
+
+int CameraThreadState::getCallingUid() {
+ if (hardware::IPCThreadState::self()->isServingCall()) {
+ return hardware::IPCThreadState::self()->getCallingUid();
+ }
+ return IPCThreadState::self()->getCallingUid();
+}
+
+int CameraThreadState::getCallingPid() {
+ if (hardware::IPCThreadState::self()->isServingCall()) {
+ return hardware::IPCThreadState::self()->getCallingPid();
+ }
+ return IPCThreadState::self()->getCallingPid();
+}
+
+int64_t CameraThreadState::clearCallingIdentity() {
+ if (hardware::IPCThreadState::self()->isServingCall()) {
+ return hardware::IPCThreadState::self()->clearCallingIdentity();
+ }
+ return IPCThreadState::self()->clearCallingIdentity();
+}
+
+void CameraThreadState::restoreCallingIdentity(int64_t token) {
+ if (hardware::IPCThreadState::self()->isServingCall()) {
+ hardware::IPCThreadState::self()->restoreCallingIdentity(token);
+ } else {
+ IPCThreadState::self()->restoreCallingIdentity(token);
+ }
+ return;
+}
+
+} // android
diff --git a/services/camera/libcameraservice/utils/CameraThreadState.h b/services/camera/libcameraservice/utils/CameraThreadState.h
new file mode 100644
index 0000000..e1a70de
--- /dev/null
+++ b/services/camera/libcameraservice/utils/CameraThreadState.h
@@ -0,0 +1,31 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <stdint.h>
+
+namespace android {
+class CameraThreadState {
+public:
+ static int64_t clearCallingIdentity();
+
+ static void restoreCallingIdentity(int64_t token);
+
+ static int getCallingUid();
+
+ static int getCallingPid();
+};
+
+} // android