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-rw-r--r--libs/audioflinger/AudioFlinger.cpp50
-rw-r--r--libs/audioflinger/AudioFlinger.h1
-rw-r--r--libs/audioflinger/AudioHardwareInterface.cpp2
-rw-r--r--libs/surfaceflinger/GPUHardware/GPUHardware.cpp6
-rw-r--r--libs/surfaceflinger/Layer.cpp2
-rw-r--r--libs/surfaceflinger/SurfaceFlinger.cpp14
-rw-r--r--libs/surfaceflinger/VRamHeap.cpp2
-rw-r--r--libs/ui/Camera.cpp127
-rw-r--r--libs/ui/ICameraClient.cpp131
-rw-r--r--libs/utils/Android.mk3
-rw-r--r--libs/utils/ResourceTypes.cpp2
-rw-r--r--libs/utils/file_backup_helper.cpp685
12 files changed, 822 insertions, 203 deletions
diff --git a/libs/audioflinger/AudioFlinger.cpp b/libs/audioflinger/AudioFlinger.cpp
index d11e13a..b56221f 100644
--- a/libs/audioflinger/AudioFlinger.cpp
+++ b/libs/audioflinger/AudioFlinger.cpp
@@ -651,27 +651,30 @@ status_t AudioFlinger::setStreamVolume(int stream, float value)
return BAD_VALUE;
}
- mHardwareMixerThread->setStreamVolume(stream, value);
-#ifdef WITH_A2DP
- mA2dpMixerThread->setStreamVolume(stream, value);
-#endif
-
status_t ret = NO_ERROR;
if (stream == AudioSystem::VOICE_CALL ||
stream == AudioSystem::BLUETOOTH_SCO) {
-
+ float hwValue;
if (stream == AudioSystem::VOICE_CALL) {
- value = (float)AudioSystem::logToLinear(value)/100.0f;
+ hwValue = (float)AudioSystem::logToLinear(value)/100.0f;
+ // offset value to reflect actual hardware volume that never reaches 0
+ // 1% corresponds roughly to first step in VOICE_CALL stream volume setting (see AudioService.java)
+ value = 0.01 + 0.99 * value;
} else { // (type == AudioSystem::BLUETOOTH_SCO)
- value = 1.0f;
+ hwValue = 1.0f;
}
AutoMutex lock(mHardwareLock);
mHardwareStatus = AUDIO_SET_VOICE_VOLUME;
- ret = mAudioHardware->setVoiceVolume(value);
+ ret = mAudioHardware->setVoiceVolume(hwValue);
mHardwareStatus = AUDIO_HW_IDLE;
}
+ mHardwareMixerThread->setStreamVolume(stream, value);
+#ifdef WITH_A2DP
+ mA2dpMixerThread->setStreamVolume(stream, value);
+#endif
+
return ret;
}
@@ -709,7 +712,14 @@ float AudioFlinger::streamVolume(int stream) const
if (uint32_t(stream) >= AudioSystem::NUM_STREAM_TYPES) {
return 0.0f;
}
- return mHardwareMixerThread->streamVolume(stream);
+
+ float volume = mHardwareMixerThread->streamVolume(stream);
+ // remove correction applied by setStreamVolume()
+ if (stream == AudioSystem::VOICE_CALL) {
+ volume = (volume - 0.01) / 0.99 ;
+ }
+
+ return volume;
}
bool AudioFlinger::streamMute(int stream) const
@@ -812,17 +822,12 @@ void AudioFlinger::handleForcedSpeakerRoute(int command)
if (mForcedRoute == 0 && !(mSavedRoute & AudioSystem::ROUTE_SPEAKER)) {
LOGV("Route forced to Speaker ON %08x", mSavedRoute | AudioSystem::ROUTE_SPEAKER);
mHardwareMixerThread->setStreamMute(AudioSystem::MUSIC, true);
- mHardwareStatus = AUDIO_HW_SET_MASTER_VOLUME;
- mAudioHardware->setMasterVolume(0);
usleep(mHardwareMixerThread->latency()*1000);
mHardwareStatus = AUDIO_HW_SET_ROUTING;
mAudioHardware->setRouting(AudioSystem::MODE_NORMAL, mSavedRoute | AudioSystem::ROUTE_SPEAKER);
mHardwareStatus = AUDIO_HW_IDLE;
// delay track start so that audio hardware has time to siwtch routes
usleep(kStartSleepTime);
- mHardwareStatus = AUDIO_HW_SET_MASTER_VOLUME;
- mAudioHardware->setMasterVolume(mHardwareMixerThread->masterVolume());
- mHardwareStatus = AUDIO_HW_IDLE;
}
mForcedRoute = AudioSystem::ROUTE_SPEAKER;
}
@@ -1480,18 +1485,6 @@ status_t AudioFlinger::MixerThread::addTrack_l(const sp<Track>& track)
return status;
}
-// removeTrack_l() must be called with AudioFlinger::mLock held
-void AudioFlinger::MixerThread::removeTrack_l(wp<Track> track, int name)
-{
- sp<Track> t = track.promote();
- if (t!=NULL && (t->mState <= TrackBase::STOPPED)) {
- t->reset();
- deleteTrackName_l(name);
- removeActiveTrack_l(track);
- mAudioFlinger->mWaitWorkCV.broadcast();
- }
-}
-
// destroyTrack_l() must be called with AudioFlinger::mLock held
void AudioFlinger::MixerThread::destroyTrack_l(const sp<Track>& track)
{
@@ -1697,7 +1690,7 @@ void* AudioFlinger::MixerThread::TrackBase::getBuffer(uint32_t offset, uint32_t
// Check validity of returned pointer in case the track control block would have been corrupted.
if (bufferStart < mBuffer || bufferStart > bufferEnd || bufferEnd > mBufferEnd ||
- cblk->channels == 2 && ((unsigned long)bufferStart & 3) ) {
+ (cblk->channels == 2 && ((unsigned long)bufferStart & 3))) {
LOGE("TrackBase::getBuffer buffer out of range:\n start: %p, end %p , mBuffer %p mBufferEnd %p\n \
server %d, serverBase %d, user %d, userBase %d, channels %d",
bufferStart, bufferEnd, mBuffer, mBufferEnd,
@@ -1733,7 +1726,6 @@ AudioFlinger::MixerThread::Track::~Track()
wp<Track> weak(this); // never create a strong ref from the dtor
Mutex::Autolock _l(mMixerThread->mAudioFlinger->mLock);
mState = TERMINATED;
- mMixerThread->removeTrack_l(weak, mName);
}
void AudioFlinger::MixerThread::Track::destroy()
diff --git a/libs/audioflinger/AudioFlinger.h b/libs/audioflinger/AudioFlinger.h
index db5cc74..c7ca9ec 100644
--- a/libs/audioflinger/AudioFlinger.h
+++ b/libs/audioflinger/AudioFlinger.h
@@ -501,7 +501,6 @@ private:
MixerThread& operator = (const MixerThread&);
status_t addTrack_l(const sp<Track>& track);
- void removeTrack_l(wp<Track> track, int name);
void destroyTrack_l(const sp<Track>& track);
int getTrackName_l();
void deleteTrackName_l(int name);
diff --git a/libs/audioflinger/AudioHardwareInterface.cpp b/libs/audioflinger/AudioHardwareInterface.cpp
index ac76a19..cc1bd8f 100644
--- a/libs/audioflinger/AudioHardwareInterface.cpp
+++ b/libs/audioflinger/AudioHardwareInterface.cpp
@@ -53,7 +53,7 @@ static const char* routeStrings[] =
"EARPIECE ",
"SPEAKER ",
"BLUETOOTH ",
- "HEADSET "
+ "HEADSET ",
"BLUETOOTH_A2DP "
};
static const char* routeNone = "NONE";
diff --git a/libs/surfaceflinger/GPUHardware/GPUHardware.cpp b/libs/surfaceflinger/GPUHardware/GPUHardware.cpp
index eb75f99..7168bf2 100644
--- a/libs/surfaceflinger/GPUHardware/GPUHardware.cpp
+++ b/libs/surfaceflinger/GPUHardware/GPUHardware.cpp
@@ -573,7 +573,11 @@ void GPUHardware::binderDied(const wp<IBinder>& who)
sp<GPUHardwareInterface> GPUFactory::getGPU()
{
- return new GPUHardware();
+ sp<GPUHardwareInterface> gpu;
+ if (access("/dev/hw3d", F_OK) == 0) {
+ gpu = new GPUHardware();
+ }
+ return gpu;
}
// ---------------------------------------------------------------------------
diff --git a/libs/surfaceflinger/Layer.cpp b/libs/surfaceflinger/Layer.cpp
index f65d669..96395a8 100644
--- a/libs/surfaceflinger/Layer.cpp
+++ b/libs/surfaceflinger/Layer.cpp
@@ -108,7 +108,7 @@ status_t Layer::setBuffers( Client* client,
// we always force a 4-byte aligned bpr.
uint32_t alignment = 1;
- if (flags & ISurfaceComposer::eGPU) {
+ if ((flags & ISurfaceComposer::eGPU) && (mFlinger->getGPU() != 0)) {
// FIXME: this value should come from the h/w
alignment = 8;
// FIXME: this is msm7201A specific, as its GPU only supports
diff --git a/libs/surfaceflinger/SurfaceFlinger.cpp b/libs/surfaceflinger/SurfaceFlinger.cpp
index de64f55..167a59b 100644
--- a/libs/surfaceflinger/SurfaceFlinger.cpp
+++ b/libs/surfaceflinger/SurfaceFlinger.cpp
@@ -241,6 +241,9 @@ sp<IMemory> SurfaceFlinger::getCblk() const
status_t SurfaceFlinger::requestGPU(const sp<IGPUCallback>& callback,
gpu_info_t* gpu)
{
+ if (mGPU == 0)
+ return INVALID_OPERATION;
+
IPCThreadState* ipc = IPCThreadState::self();
const int pid = ipc->getCallingPid();
status_t err = mGPU->request(pid, callback, gpu);
@@ -249,6 +252,9 @@ status_t SurfaceFlinger::requestGPU(const sp<IGPUCallback>& callback,
status_t SurfaceFlinger::revokeGPU()
{
+ if (mGPU == 0)
+ return INVALID_OPERATION;
+
return mGPU->friendlyRevoke();
}
@@ -1600,10 +1606,14 @@ status_t SurfaceFlinger::onTransact(
}
return NO_ERROR;
case 1005: // ask GPU revoke
- mGPU->friendlyRevoke();
+ if (mGPU != 0) {
+ mGPU->friendlyRevoke();
+ }
return NO_ERROR;
case 1006: // revoke GPU
- mGPU->unconditionalRevoke();
+ if (mGPU != 0) {
+ mGPU->unconditionalRevoke();
+ }
return NO_ERROR;
case 1007: // set mFreezeCount
mFreezeCount = data.readInt32();
diff --git a/libs/surfaceflinger/VRamHeap.cpp b/libs/surfaceflinger/VRamHeap.cpp
index 0ccd71f..238c602 100644
--- a/libs/surfaceflinger/VRamHeap.cpp
+++ b/libs/surfaceflinger/VRamHeap.cpp
@@ -98,7 +98,7 @@ sp<MemoryDealer> SurfaceHeapManager::createHeap(
}
}
- if (flags & ISurfaceComposer::eGPU) {
+ if ((flags & ISurfaceComposer::eGPU) && (mFlinger->getGPU() != 0)) {
// FIXME: this is msm7201A specific, where gpu surfaces may not be secure
if (!(flags & ISurfaceComposer::eSecure)) {
// if GPU doesn't work, we try eHardware
diff --git a/libs/ui/Camera.cpp b/libs/ui/Camera.cpp
index b3cbda1..6613700 100644
--- a/libs/ui/Camera.cpp
+++ b/libs/ui/Camera.cpp
@@ -64,15 +64,22 @@ Camera::Camera()
init();
}
-Camera::Camera(const sp<ICamera>& camera)
+// construct a camera client from an existing camera remote
+sp<Camera> Camera::create(const sp<ICamera>& camera)
{
- init();
- // connect this client to existing camera remote
- if (camera->connect(this) == NO_ERROR) {
- mStatus = NO_ERROR;
- mCamera = camera;
- camera->asBinder()->linkToDeath(this);
+ LOGV("create");
+ if (camera == 0) {
+ LOGE("camera remote is a NULL pointer");
+ return 0;
+ }
+
+ sp<Camera> c = new Camera();
+ if (camera->connect(c) == NO_ERROR) {
+ c->mStatus = NO_ERROR;
+ c->mCamera = camera;
+ camera->asBinder()->linkToDeath(c);
}
+ return c;
}
void Camera::init()
@@ -330,63 +337,65 @@ void Camera::setErrorCallback(error_callback cb, void *cookie)
mErrorCallbackCookie = cookie;
}
-void Camera::autoFocusCallback(bool focused)
-{
- LOGV("autoFocusCallback");
- if (mAutoFocusCallback) {
- mAutoFocusCallback(focused, mAutoFocusCallbackCookie);
- }
-}
-
-void Camera::shutterCallback()
-{
- LOGV("shutterCallback");
- if (mShutterCallback) {
- mShutterCallback(mShutterCallbackCookie);
- }
-}
-
-void Camera::rawCallback(const sp<IMemory>& picture)
-{
- LOGV("rawCallback");
- if (mRawCallback) {
- mRawCallback(picture, mRawCallbackCookie);
- }
-}
-
-// callback from camera service when image is ready
-void Camera::jpegCallback(const sp<IMemory>& picture)
+// callback from camera service
+void Camera::notifyCallback(int32_t msgType, int32_t ext1, int32_t ext2)
{
- LOGV("jpegCallback");
- if (mJpegCallback) {
- mJpegCallback(picture, mJpegCallbackCookie);
- }
-}
-
-// callback from camera service when preview frame is ready
-void Camera::previewCallback(const sp<IMemory>& frame)
-{
- LOGV("frameCallback");
- if (mPreviewCallback) {
- mPreviewCallback(frame, mPreviewCallbackCookie);
- }
-}
-
-// callback from camera service when a recording frame is ready
-void Camera::recordingCallback(const sp<IMemory>& frame)
-{
- LOGV("recordingCallback");
- if (mRecordingCallback) {
- mRecordingCallback(frame, mRecordingCallbackCookie);
+ switch(msgType) {
+ case CAMERA_MSG_ERROR:
+ LOGV("errorCallback");
+ if (mErrorCallback) {
+ mErrorCallback((status_t)ext1, mErrorCallbackCookie);
+ }
+ break;
+ case CAMERA_MSG_FOCUS:
+ LOGV("autoFocusCallback");
+ if (mAutoFocusCallback) {
+ mAutoFocusCallback((bool)ext1, mAutoFocusCallbackCookie);
+ }
+ break;
+ case CAMERA_MSG_SHUTTER:
+ LOGV("shutterCallback");
+ if (mShutterCallback) {
+ mShutterCallback(mShutterCallbackCookie);
+ }
+ break;
+ default:
+ LOGV("notifyCallback(%d, %d, %d)", msgType, ext1, ext2);
+ break;
}
}
-// callback from camera service when an error occurs in preview or takePicture
-void Camera::errorCallback(status_t error)
+// callback from camera service when frame or image is ready
+void Camera::dataCallback(int32_t msgType, const sp<IMemory>& dataPtr)
{
- LOGV("errorCallback");
- if (mErrorCallback) {
- mErrorCallback(error, mErrorCallbackCookie);
+ switch(msgType) {
+ case CAMERA_MSG_PREVIEW_FRAME:
+ LOGV("previewCallback");
+ if (mPreviewCallback) {
+ mPreviewCallback(dataPtr, mPreviewCallbackCookie);
+ }
+ break;
+ case CAMERA_MSG_VIDEO_FRAME:
+ LOGV("recordingCallback");
+ if (mRecordingCallback) {
+ mRecordingCallback(dataPtr, mRecordingCallbackCookie);
+ }
+ break;
+ case CAMERA_MSG_RAW_IMAGE:
+ LOGV("rawCallback");
+ if (mRawCallback) {
+ mRawCallback(dataPtr, mRawCallbackCookie);
+ }
+ break;
+ case CAMERA_MSG_COMPRESSED_IMAGE:
+ LOGV("jpegCallback");
+ if (mJpegCallback) {
+ mJpegCallback(dataPtr, mJpegCallbackCookie);
+ }
+ break;
+ default:
+ LOGV("dataCallback(%d, %p)", msgType, dataPtr.get());
+ break;
}
}
diff --git a/libs/ui/ICameraClient.cpp b/libs/ui/ICameraClient.cpp
index 4bec9d2..c6cf75c 100644
--- a/libs/ui/ICameraClient.cpp
+++ b/libs/ui/ICameraClient.cpp
@@ -25,13 +25,8 @@
namespace android {
enum {
- SHUTTER_CALLBACK = IBinder::FIRST_CALL_TRANSACTION,
- RAW_CALLBACK,
- JPEG_CALLBACK,
- PREVIEW_CALLBACK,
- ERROR_CALLBACK,
- AUTOFOCUS_CALLBACK,
- RECORDING_CALLBACK,
+ NOTIFY_CALLBACK = IBinder::FIRST_CALL_TRANSACTION,
+ DATA_CALLBACK,
};
class BpCameraClient: public BpInterface<ICameraClient>
@@ -42,74 +37,29 @@ public:
{
}
- // callback to let the app know the shutter has closed, ideal for playing the shutter sound
- void shutterCallback()
+ // generic callback from camera service to app
+ void notifyCallback(int32_t msgType, int32_t ext1, int32_t ext2)
{
- LOGV("shutterCallback");
+ LOGV("notifyCallback");
Parcel data, reply;
data.writeInterfaceToken(ICameraClient::getInterfaceDescriptor());
- remote()->transact(SHUTTER_CALLBACK, data, &reply, IBinder::FLAG_ONEWAY);
+ data.writeInt32(msgType);
+ data.writeInt32(ext1);
+ data.writeInt32(ext2);
+ remote()->transact(NOTIFY_CALLBACK, data, &reply, IBinder::FLAG_ONEWAY);
}
- // callback from camera service to app with picture data
- void rawCallback(const sp<IMemory>& picture)
+ // generic data callback from camera service to app with image data
+ void dataCallback(int32_t msgType, const sp<IMemory>& imageData)
{
- LOGV("rawCallback");
+ LOGV("dataCallback");
Parcel data, reply;
data.writeInterfaceToken(ICameraClient::getInterfaceDescriptor());
- data.writeStrongBinder(picture->asBinder());
- remote()->transact(RAW_CALLBACK, data, &reply, IBinder::FLAG_ONEWAY);
+ data.writeInt32(msgType);
+ data.writeStrongBinder(imageData->asBinder());
+ remote()->transact(DATA_CALLBACK, data, &reply, IBinder::FLAG_ONEWAY);
}
- // callback from camera service to app with picture data
- void jpegCallback(const sp<IMemory>& picture)
- {
- LOGV("jpegCallback");
- Parcel data, reply;
- data.writeInterfaceToken(ICameraClient::getInterfaceDescriptor());
- data.writeStrongBinder(picture->asBinder());
- remote()->transact(JPEG_CALLBACK, data, &reply, IBinder::FLAG_ONEWAY);
- }
-
- // callback from camera service to app with preview frame data
- void previewCallback(const sp<IMemory>& frame)
- {
- LOGV("previewCallback");
- Parcel data, reply;
- data.writeInterfaceToken(ICameraClient::getInterfaceDescriptor());
- data.writeStrongBinder(frame->asBinder());
- remote()->transact(PREVIEW_CALLBACK, data, &reply, IBinder::FLAG_ONEWAY);
- }
-
- // callback from camera service to app with recording frame data
- void recordingCallback(const sp<IMemory>& frame)
- {
- LOGV("recordingCallback");
- Parcel data, reply;
- data.writeInterfaceToken(ICameraClient::getInterfaceDescriptor());
- data.writeStrongBinder(frame->asBinder());
- remote()->transact(RECORDING_CALLBACK, data, &reply, IBinder::FLAG_ONEWAY);
- }
-
- // callback from camera service to app to report error
- void errorCallback(status_t error)
- {
- LOGV("errorCallback");
- Parcel data, reply;
- data.writeInterfaceToken(ICameraClient::getInterfaceDescriptor());
- data.writeInt32(error);
- remote()->transact(ERROR_CALLBACK, data, &reply, IBinder::FLAG_ONEWAY);
- }
-
- // callback from camera service to app to report autofocus completion
- void autoFocusCallback(bool focused)
- {
- LOGV("autoFocusCallback");
- Parcel data, reply;
- data.writeInterfaceToken(ICameraClient::getInterfaceDescriptor());
- data.writeInt32(focused);
- remote()->transact(AUTOFOCUS_CALLBACK, data, &reply, IBinder::FLAG_ONEWAY);
- }
};
IMPLEMENT_META_INTERFACE(CameraClient, "android.hardware.ICameraClient");
@@ -126,52 +76,21 @@ status_t BnCameraClient::onTransact(
uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
{
switch(code) {
- case SHUTTER_CALLBACK: {
- LOGV("SHUTTER_CALLBACK");
+ case NOTIFY_CALLBACK: {
+ LOGV("NOTIFY_CALLBACK");
CHECK_INTERFACE(ICameraClient, data, reply);
- shutterCallback();
+ int32_t msgType = data.readInt32();
+ int32_t ext1 = data.readInt32();
+ int32_t ext2 = data.readInt32();
+ notifyCallback(msgType, ext1, ext2);
return NO_ERROR;
} break;
- case RAW_CALLBACK: {
+ case DATA_CALLBACK: {
LOGV("RAW_CALLBACK");
CHECK_INTERFACE(ICameraClient, data, reply);
- sp<IMemory> picture = interface_cast<IMemory>(data.readStrongBinder());
- rawCallback(picture);
- return NO_ERROR;
- } break;
- case JPEG_CALLBACK: {
- LOGV("JPEG_CALLBACK");
- CHECK_INTERFACE(ICameraClient, data, reply);
- sp<IMemory> picture = interface_cast<IMemory>(data.readStrongBinder());
- jpegCallback(picture);
- return NO_ERROR;
- } break;
- case PREVIEW_CALLBACK: {
- LOGV("PREVIEW_CALLBACK");
- CHECK_INTERFACE(ICameraClient, data, reply);
- sp<IMemory> frame = interface_cast<IMemory>(data.readStrongBinder());
- previewCallback(frame);
- return NO_ERROR;
- } break;
- case RECORDING_CALLBACK: {
- LOGV("RECORDING_CALLBACK");
- CHECK_INTERFACE(ICameraClient, data, reply);
- sp<IMemory> frame = interface_cast<IMemory>(data.readStrongBinder());
- recordingCallback(frame);
- return NO_ERROR;
- } break;
- case ERROR_CALLBACK: {
- LOGV("ERROR_CALLBACK");
- CHECK_INTERFACE(ICameraClient, data, reply);
- status_t error = data.readInt32();
- errorCallback(error);
- return NO_ERROR;
- } break;
- case AUTOFOCUS_CALLBACK: {
- LOGV("AUTOFOCUS_CALLBACK");
- CHECK_INTERFACE(ICameraClient, data, reply);
- bool focused = (bool)data.readInt32();
- autoFocusCallback(focused);
+ int32_t msgType = data.readInt32();
+ sp<IMemory> imageData = interface_cast<IMemory>(data.readStrongBinder());
+ dataCallback(msgType, imageData);
return NO_ERROR;
} break;
default:
diff --git a/libs/utils/Android.mk b/libs/utils/Android.mk
index cdb8ca2..f9fb780 100644
--- a/libs/utils/Android.mk
+++ b/libs/utils/Android.mk
@@ -116,7 +116,8 @@ LOCAL_SRC_FILES:= \
ProcessState.cpp \
IPermissionController.cpp \
IServiceManager.cpp \
- Unicode.cpp
+ Unicode.cpp \
+ file_backup_helper.cpp
ifeq ($(TARGET_SIMULATOR),true)
LOCAL_SRC_FILES += $(hostSources)
diff --git a/libs/utils/ResourceTypes.cpp b/libs/utils/ResourceTypes.cpp
index 2ad3bfe..3d12dca 100644
--- a/libs/utils/ResourceTypes.cpp
+++ b/libs/utils/ResourceTypes.cpp
@@ -1820,7 +1820,7 @@ ssize_t ResTable::getResource(uint32_t resID, Res_value* outValue, bool mayBeBag
}
}
- if (bestPackage != NULL && bestItem.isBetterThan(thisConfig)) {
+ if (bestPackage != NULL && bestItem.isMoreSpecificThan(thisConfig)) {
continue;
}
diff --git a/libs/utils/file_backup_helper.cpp b/libs/utils/file_backup_helper.cpp
new file mode 100644
index 0000000..453084a
--- /dev/null
+++ b/libs/utils/file_backup_helper.cpp
@@ -0,0 +1,685 @@
+#define LOG_TAG "file_backup_helper"
+
+#include <utils/backup_helpers.h>
+
+#include <utils/KeyedVector.h>
+#include <utils/ByteOrder.h>
+#include <utils/String8.h>
+
+#include <errno.h>
+#include <sys/types.h>
+#include <sys/uio.h>
+#include <sys/stat.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <utime.h>
+#include <fcntl.h>
+#include <zlib.h>
+
+#include <cutils/log.h>
+
+using namespace android;
+
+#define MAGIC0 0x70616e53 // Snap
+#define MAGIC1 0x656c6946 // File
+
+#define LOGP(x...) LOGD(x)
+//#define LOGP(x...) printf(x)
+
+struct SnapshotHeader {
+ int magic0;
+ int fileCount;
+ int magic1;
+ int totalSize;
+};
+
+struct FileState {
+ int modTime_sec;
+ int modTime_nsec;
+ int size;
+ int crc32;
+ int nameLen;
+};
+
+const static int ROUND_UP[4] = { 0, 3, 2, 1 };
+
+static inline int
+round_up(int n)
+{
+ return n + ROUND_UP[n % 4];
+}
+
+static int
+read_snapshot_file(int fd, KeyedVector<String8,FileState>* snapshot)
+{
+ int bytesRead = 0;
+ int amt;
+ SnapshotHeader header;
+
+ amt = read(fd, &header, sizeof(header));
+ if (amt != sizeof(header)) {
+ return errno;
+ }
+ bytesRead += amt;
+
+ if (header.magic0 != MAGIC0 || header.magic1 != MAGIC1) {
+ LOGW("read_snapshot_file header.magic0=0x%08x magic1=0x%08x", header.magic0, header.magic1);
+ return 1;
+ }
+
+ for (int i=0; i<header.fileCount; i++) {
+ FileState file;
+ char filenameBuf[128];
+
+ amt = read(fd, &file, sizeof(file));
+ if (amt != sizeof(file)) {
+ LOGW("read_snapshot_file FileState truncated/error with read at %d bytes\n", bytesRead);
+ return 1;
+ }
+ bytesRead += amt;
+
+ // filename is not NULL terminated, but it is padded
+ int nameBufSize = round_up(file.nameLen);
+ char* filename = nameBufSize <= (int)sizeof(filenameBuf)
+ ? filenameBuf
+ : (char*)malloc(nameBufSize);
+ amt = read(fd, filename, nameBufSize);
+ if (amt == nameBufSize) {
+ snapshot->add(String8(filename, file.nameLen), file);
+ }
+ bytesRead += amt;
+ if (filename != filenameBuf) {
+ free(filename);
+ }
+ if (amt != nameBufSize) {
+ LOGW("read_snapshot_file filename truncated/error with read at %d bytes\n", bytesRead);
+ return 1;
+ }
+ }
+
+ if (header.totalSize != bytesRead) {
+ LOGW("read_snapshot_file length mismatch: header.totalSize=%d bytesRead=%d\n",
+ header.totalSize, bytesRead);
+ return 1;
+ }
+
+ return 0;
+}
+
+static int
+write_snapshot_file(int fd, const KeyedVector<String8,FileState>& snapshot)
+{
+ int bytesWritten = sizeof(SnapshotHeader);
+ // preflight size
+ const int N = snapshot.size();
+ for (int i=0; i<N; i++) {
+ const String8& name = snapshot.keyAt(i);
+ bytesWritten += sizeof(FileState) + round_up(name.length());
+ }
+
+ int amt;
+ SnapshotHeader header = { MAGIC0, N, MAGIC1, bytesWritten };
+
+ amt = write(fd, &header, sizeof(header));
+ if (amt != sizeof(header)) {
+ LOGW("write_snapshot_file error writing header %s", strerror(errno));
+ return errno;
+ }
+
+ for (int i=0; i<header.fileCount; i++) {
+ const String8& name = snapshot.keyAt(i);
+ FileState file = snapshot.valueAt(i);
+ int nameLen = file.nameLen = name.length();
+
+ amt = write(fd, &file, sizeof(file));
+ if (amt != sizeof(file)) {
+ LOGW("write_snapshot_file error writing header %s", strerror(errno));
+ return 1;
+ }
+
+ // filename is not NULL terminated, but it is padded
+ amt = write(fd, name.string(), nameLen);
+ if (amt != nameLen) {
+ LOGW("write_snapshot_file error writing filename %s", strerror(errno));
+ return 1;
+ }
+ int paddingLen = ROUND_UP[nameLen % 4];
+ if (paddingLen != 0) {
+ int padding = 0xabababab;
+ amt = write(fd, &padding, paddingLen);
+ if (amt != paddingLen) {
+ LOGW("write_snapshot_file error writing %d bytes of filename padding %s",
+ paddingLen, strerror(errno));
+ return 1;
+ }
+ }
+ }
+
+ return 0;
+}
+
+static int
+write_delete_file(const String8& key)
+{
+ LOGP("write_delete_file %s\n", key.string());
+ return 0;
+}
+
+static int
+write_update_file(const String8& realFilename, const String8& key)
+{
+ LOGP("write_update_file %s (%s)\n", realFilename.string(), key.string());
+ return 0;
+}
+
+static int
+compute_crc32(const String8& filename)
+{
+ const int bufsize = 4*1024;
+ int amt;
+
+ int fd = open(filename.string(), O_RDONLY);
+ if (fd == -1) {
+ return -1;
+ }
+
+ char* buf = (char*)malloc(bufsize);
+ int crc = crc32(0L, Z_NULL, 0);
+
+ while ((amt = read(fd, buf, bufsize)) != 0) {
+ crc = crc32(crc, (Bytef*)buf, amt);
+ }
+
+ close(fd);
+ free(buf);
+
+ return crc;
+}
+
+int
+back_up_files(int oldSnapshotFD, int oldDataStream, int newSnapshotFD,
+ char const* fileBase, char const* const* files, int fileCount)
+{
+ int err;
+ const String8 base(fileBase);
+ KeyedVector<String8,FileState> oldSnapshot;
+ KeyedVector<String8,FileState> newSnapshot;
+
+ if (oldSnapshotFD != -1) {
+ err = read_snapshot_file(oldSnapshotFD, &oldSnapshot);
+ if (err != 0) {
+ // On an error, treat this as a full backup.
+ oldSnapshot.clear();
+ }
+ }
+
+ for (int i=0; i<fileCount; i++) {
+ String8 name(files[i]);
+ FileState s;
+ struct stat st;
+ String8 realFilename(base);
+ realFilename.appendPath(name);
+
+ err = stat(realFilename.string(), &st);
+ if (err != 0) {
+ LOGW("Error stating file %s", realFilename.string());
+ continue;
+ }
+
+ s.modTime_sec = st.st_mtime;
+ s.modTime_nsec = 0; // workaround sim breakage
+ //s.modTime_nsec = st.st_mtime_nsec;
+ s.size = st.st_size;
+ s.crc32 = compute_crc32(realFilename);
+
+ newSnapshot.add(name, s);
+ }
+
+ int n = 0;
+ int N = oldSnapshot.size();
+ int m = 0;
+
+ while (n<N && m<fileCount) {
+ const String8& p = oldSnapshot.keyAt(n);
+ const String8& q = newSnapshot.keyAt(m);
+ int cmp = p.compare(q);
+ if (cmp > 0) {
+ // file added
+ String8 realFilename(base);
+ realFilename.appendPath(q);
+ write_update_file(realFilename, q);
+ m++;
+ }
+ else if (cmp < 0) {
+ // file removed
+ write_delete_file(p);
+ n++;
+ }
+ else {
+ // both files exist, check them
+ String8 realFilename(base);
+ realFilename.appendPath(q);
+ const FileState& f = oldSnapshot.valueAt(n);
+ const FileState& g = newSnapshot.valueAt(m);
+
+ LOGP("%s\n", q.string());
+ LOGP(" new: modTime=%d,%d size=%-3d crc32=0x%08x\n",
+ f.modTime_sec, f.modTime_nsec, f.size, f.crc32);
+ LOGP(" old: modTime=%d,%d size=%-3d crc32=0x%08x\n",
+ g.modTime_sec, g.modTime_nsec, g.size, g.crc32);
+ if (f.modTime_sec != g.modTime_sec || f.modTime_nsec != g.modTime_nsec
+ || f.size != g.size || f.crc32 != g.crc32) {
+ write_update_file(realFilename, p);
+ }
+ n++;
+ m++;
+ }
+ }
+
+ // these were deleted
+ while (n<N) {
+ write_delete_file(oldSnapshot.keyAt(n));
+ n++;
+ }
+
+ // these were added
+ while (m<fileCount) {
+ const String8& q = newSnapshot.keyAt(m);
+ String8 realFilename(base);
+ realFilename.appendPath(q);
+ write_update_file(realFilename, q);
+ m++;
+ }
+
+ err = write_snapshot_file(newSnapshotFD, newSnapshot);
+
+ return 0;
+}
+
+#if TEST_BACKUP_HELPERS
+
+#define SCRATCH_DIR "/data/backup_helper_test/"
+
+static int
+write_text_file(const char* path, const char* data)
+{
+ int amt;
+ int fd;
+ int len;
+
+ fd = creat(path, 0666);
+ if (fd == -1) {
+ fprintf(stderr, "creat %s failed\n", path);
+ return errno;
+ }
+
+ len = strlen(data);
+ amt = write(fd, data, len);
+ if (amt != len) {
+ fprintf(stderr, "error (%s) writing to file %s\n", strerror(errno), path);
+ return errno;
+ }
+
+ close(fd);
+
+ return 0;
+}
+
+static int
+compare_file(const char* path, const unsigned char* data, int len)
+{
+ int fd;
+ int amt;
+
+ fd = open(path, O_RDONLY);
+ if (fd == -1) {
+ fprintf(stderr, "compare_file error (%s) opening %s\n", strerror(errno), path);
+ return errno;
+ }
+
+ unsigned char* contents = (unsigned char*)malloc(len);
+ if (contents == NULL) {
+ fprintf(stderr, "malloc(%d) failed\n", len);
+ return ENOMEM;
+ }
+
+ bool sizesMatch = true;
+ amt = lseek(fd, 0, SEEK_END);
+ if (amt != len) {
+ fprintf(stderr, "compare_file file length should be %d, was %d\n", len, amt);
+ sizesMatch = false;
+ }
+ lseek(fd, 0, SEEK_SET);
+
+ int readLen = amt < len ? amt : len;
+ amt = read(fd, contents, readLen);
+ if (amt != readLen) {
+ fprintf(stderr, "compare_file read expected %d bytes but got %d\n", len, amt);
+ }
+
+ bool contentsMatch = true;
+ for (int i=0; i<readLen; i++) {
+ if (data[i] != contents[i]) {
+ if (contentsMatch) {
+ fprintf(stderr, "compare_file contents are different: (index, expected, actual)\n");
+ contentsMatch = false;
+ }
+ fprintf(stderr, " [%-2d] %02x %02x\n", i, data[i], contents[i]);
+ }
+ }
+
+ return contentsMatch && sizesMatch ? 0 : 1;
+}
+
+int
+backup_helper_test_empty()
+{
+ int err;
+ int fd;
+ KeyedVector<String8,FileState> snapshot;
+ const char* filename = SCRATCH_DIR "backup_helper_test_empty.snap";
+
+ system("rm -r " SCRATCH_DIR);
+ mkdir(SCRATCH_DIR, 0777);
+
+ // write
+ fd = creat(filename, 0666);
+ if (fd == -1) {
+ fprintf(stderr, "error creating %s\n", filename);
+ return 1;
+ }
+
+ err = write_snapshot_file(fd, snapshot);
+
+ close(fd);
+
+ if (err != 0) {
+ fprintf(stderr, "write_snapshot_file reported error %d (%s)\n", err, strerror(err));
+ return err;
+ }
+
+ static const unsigned char correct_data[] = {
+ 0x53, 0x6e, 0x61, 0x70, 0x00, 0x00, 0x00, 0x00,
+ 0x46, 0x69, 0x6c, 0x65, 0x10, 0x00, 0x00, 0x00
+ };
+
+ err = compare_file(filename, correct_data, sizeof(correct_data));
+ if (err != 0) {
+ return err;
+ }
+
+ // read
+ fd = open(filename, O_RDONLY);
+ if (fd == -1) {
+ fprintf(stderr, "error opening for read %s\n", filename);
+ return 1;
+ }
+
+ KeyedVector<String8,FileState> readSnapshot;
+ err = read_snapshot_file(fd, &readSnapshot);
+ if (err != 0) {
+ fprintf(stderr, "read_snapshot_file failed %d\n", err);
+ return err;
+ }
+
+ if (readSnapshot.size() != 0) {
+ fprintf(stderr, "readSnapshot should be length 0\n");
+ return 1;
+ }
+
+ return 0;
+}
+
+int
+backup_helper_test_four()
+{
+ int err;
+ int fd;
+ KeyedVector<String8,FileState> snapshot;
+ const char* filename = SCRATCH_DIR "backup_helper_test_four.snap";
+
+ system("rm -r " SCRATCH_DIR);
+ mkdir(SCRATCH_DIR, 0777);
+
+ // write
+ fd = creat(filename, 0666);
+ if (fd == -1) {
+ fprintf(stderr, "error opening %s\n", filename);
+ return 1;
+ }
+
+ String8 filenames[4];
+ FileState states[4];
+
+ states[0].modTime_sec = 0xfedcba98;
+ states[0].modTime_nsec = 0xdeadbeef;
+ states[0].size = 0xababbcbc;
+ states[0].crc32 = 0x12345678;
+ states[0].nameLen = -12;
+ filenames[0] = String8("bytes_of_padding");
+ snapshot.add(filenames[0], states[0]);
+
+ states[1].modTime_sec = 0x93400031;
+ states[1].modTime_nsec = 0xdeadbeef;
+ states[1].size = 0x88557766;
+ states[1].crc32 = 0x22334422;
+ states[1].nameLen = -1;
+ filenames[1] = String8("bytes_of_padding3");
+ snapshot.add(filenames[1], states[1]);
+
+ states[2].modTime_sec = 0x33221144;
+ states[2].modTime_nsec = 0xdeadbeef;
+ states[2].size = 0x11223344;
+ states[2].crc32 = 0x01122334;
+ states[2].nameLen = 0;
+ filenames[2] = String8("bytes_of_padding_2");
+ snapshot.add(filenames[2], states[2]);
+
+ states[3].modTime_sec = 0x33221144;
+ states[3].modTime_nsec = 0xdeadbeef;
+ states[3].size = 0x11223344;
+ states[3].crc32 = 0x01122334;
+ states[3].nameLen = 0;
+ filenames[3] = String8("bytes_of_padding__1");
+ snapshot.add(filenames[3], states[3]);
+
+ err = write_snapshot_file(fd, snapshot);
+
+ close(fd);
+
+ if (err != 0) {
+ fprintf(stderr, "write_snapshot_file reported error %d (%s)\n", err, strerror(err));
+ return err;
+ }
+
+ static const unsigned char correct_data[] = {
+ // header
+ 0x53, 0x6e, 0x61, 0x70, 0x04, 0x00, 0x00, 0x00,
+ 0x46, 0x69, 0x6c, 0x65, 0xac, 0x00, 0x00, 0x00,
+
+ // bytes_of_padding
+ 0x98, 0xba, 0xdc, 0xfe, 0xef, 0xbe, 0xad, 0xde,
+ 0xbc, 0xbc, 0xab, 0xab, 0x78, 0x56, 0x34, 0x12,
+ 0x10, 0x00, 0x00, 0x00, 0x62, 0x79, 0x74, 0x65,
+ 0x73, 0x5f, 0x6f, 0x66, 0x5f, 0x70, 0x61, 0x64,
+ 0x64, 0x69, 0x6e, 0x67,
+
+ // bytes_of_padding3
+ 0x31, 0x00, 0x40, 0x93, 0xef, 0xbe, 0xad, 0xde,
+ 0x66, 0x77, 0x55, 0x88, 0x22, 0x44, 0x33, 0x22,
+ 0x11, 0x00, 0x00, 0x00, 0x62, 0x79, 0x74, 0x65,
+ 0x73, 0x5f, 0x6f, 0x66, 0x5f, 0x70, 0x61, 0x64,
+ 0x64, 0x69, 0x6e, 0x67, 0x33, 0xab, 0xab, 0xab,
+
+ // bytes of padding2
+ 0x44, 0x11, 0x22, 0x33, 0xef, 0xbe, 0xad, 0xde,
+ 0x44, 0x33, 0x22, 0x11, 0x34, 0x23, 0x12, 0x01,
+ 0x12, 0x00, 0x00, 0x00, 0x62, 0x79, 0x74, 0x65,
+ 0x73, 0x5f, 0x6f, 0x66, 0x5f, 0x70, 0x61, 0x64,
+ 0x64, 0x69, 0x6e, 0x67, 0x5f, 0x32, 0xab, 0xab,
+
+ // bytes of padding3
+ 0x44, 0x11, 0x22, 0x33, 0xef, 0xbe, 0xad, 0xde,
+ 0x44, 0x33, 0x22, 0x11, 0x34, 0x23, 0x12, 0x01,
+ 0x13, 0x00, 0x00, 0x00, 0x62, 0x79, 0x74, 0x65,
+ 0x73, 0x5f, 0x6f, 0x66, 0x5f, 0x70, 0x61, 0x64,
+ 0x64, 0x69, 0x6e, 0x67, 0x5f, 0x5f, 0x31, 0xab
+ };
+
+ err = compare_file(filename, correct_data, sizeof(correct_data));
+ if (err != 0) {
+ return err;
+ }
+
+ // read
+ fd = open(filename, O_RDONLY);
+ if (fd == -1) {
+ fprintf(stderr, "error opening for read %s\n", filename);
+ return 1;
+ }
+
+
+ KeyedVector<String8,FileState> readSnapshot;
+ err = read_snapshot_file(fd, &readSnapshot);
+ if (err != 0) {
+ fprintf(stderr, "read_snapshot_file failed %d\n", err);
+ return err;
+ }
+
+ if (readSnapshot.size() != 4) {
+ fprintf(stderr, "readSnapshot should be length 4 is %d\n", readSnapshot.size());
+ return 1;
+ }
+
+ bool matched = true;
+ for (size_t i=0; i<readSnapshot.size(); i++) {
+ const String8& name = readSnapshot.keyAt(i);
+ const FileState state = readSnapshot.valueAt(i);
+
+ if (name != filenames[i] || states[i].modTime_sec != state.modTime_sec
+ || states[i].modTime_nsec != state.modTime_nsec
+ || states[i].size != state.size || states[i].crc32 != states[i].crc32) {
+ fprintf(stderr, "state %d expected={%d/%d, 0x%08x, 0x%08x, %3d} '%s'\n"
+ " actual={%d/%d, 0x%08x, 0x%08x, %3d} '%s'\n", i,
+ states[i].modTime_sec, states[i].modTime_nsec, states[i].size, states[i].crc32,
+ name.length(), filenames[i].string(),
+ state.modTime_sec, state.modTime_nsec, state.size, state.crc32, state.nameLen,
+ name.string());
+ matched = false;
+ }
+ }
+
+ return matched ? 0 : 1;
+}
+
+static int
+get_mod_time(const char* filename, struct timeval times[2])
+{
+ int err;
+ struct stat64 st;
+ err = stat64(filename, &st);
+ if (err != 0) {
+ fprintf(stderr, "stat '%s' failed: %s\n", filename, strerror(errno));
+ return errno;
+ }
+ times[0].tv_sec = st.st_atime;
+ times[0].tv_usec = st.st_atime_nsec / 1000;
+ times[1].tv_sec = st.st_mtime;
+ times[1].tv_usec = st.st_mtime_nsec / 1000;
+ return 0;
+}
+
+int
+backup_helper_test_files()
+{
+ int err;
+ int newSnapshotFD;
+ int oldSnapshotFD;
+
+ system("rm -r " SCRATCH_DIR);
+ mkdir(SCRATCH_DIR, 0777);
+ mkdir(SCRATCH_DIR "data", 0777);
+
+ write_text_file(SCRATCH_DIR "data/b", "b\nbb\n");
+ write_text_file(SCRATCH_DIR "data/c", "c\ncc\n");
+ write_text_file(SCRATCH_DIR "data/d", "d\ndd\n");
+ write_text_file(SCRATCH_DIR "data/e", "e\nee\n");
+ write_text_file(SCRATCH_DIR "data/f", "f\nff\n");
+ write_text_file(SCRATCH_DIR "data/h", "h\nhh\n");
+
+ char const* files_before[] = {
+ "data/b",
+ "data/c",
+ "data/d",
+ "data/e",
+ "data/f"
+ };
+
+ newSnapshotFD = creat(SCRATCH_DIR "before.snap", 0666);
+ if (newSnapshotFD == -1) {
+ fprintf(stderr, "error creating: %s\n", strerror(errno));
+ return errno;
+ }
+
+ err = back_up_files(-1, newSnapshotFD, 0, SCRATCH_DIR, files_before, 5);
+ if (err != 0) {
+ return err;
+ }
+
+ close(newSnapshotFD);
+
+ sleep(3);
+
+ struct timeval d_times[2];
+ struct timeval e_times[2];
+
+ err = get_mod_time(SCRATCH_DIR "data/d", d_times);
+ err |= get_mod_time(SCRATCH_DIR "data/e", e_times);
+ if (err != 0) {
+ return err;
+ }
+
+ write_text_file(SCRATCH_DIR "data/a", "a\naa\n");
+ unlink(SCRATCH_DIR "data/c");
+ write_text_file(SCRATCH_DIR "data/c", "c\ncc\n");
+ write_text_file(SCRATCH_DIR "data/d", "dd\ndd\n");
+ utimes(SCRATCH_DIR "data/d", d_times);
+ write_text_file(SCRATCH_DIR "data/e", "z\nzz\n");
+ utimes(SCRATCH_DIR "data/e", e_times);
+ write_text_file(SCRATCH_DIR "data/g", "g\ngg\n");
+ unlink(SCRATCH_DIR "data/f");
+
+ char const* files_after[] = {
+ "data/a", // added
+ "data/b", // same
+ "data/c", // different mod time
+ "data/d", // different size (same mod time)
+ "data/e", // different contents (same mod time, same size)
+ "data/g" // added
+ };
+
+ oldSnapshotFD = open(SCRATCH_DIR "before.snap", O_RDONLY);
+ if (oldSnapshotFD == -1) {
+ fprintf(stderr, "error opening: %s\n", strerror(errno));
+ return errno;
+ }
+
+ newSnapshotFD = creat(SCRATCH_DIR "after.snap", 0666);
+ if (newSnapshotFD == -1) {
+ fprintf(stderr, "error creating: %s\n", strerror(errno));
+ return errno;
+ }
+
+ err = back_up_files(oldSnapshotFD, newSnapshotFD, 0, SCRATCH_DIR, files_after, 6);
+ if (err != 0) {
+ return err;
+ }
+
+ close(oldSnapshotFD);
+ close(newSnapshotFD);
+
+ return 0;
+}
+
+#endif // TEST_BACKUP_HELPERS
generated by cgit v1.1 at 2025-08-17 23:03:04 +0000