Skip to content

HTTPS clone URL

Subversion checkout URL

You can clone with HTTPS or Subversion.

Download ZIP
Fetching contributors…

Cannot retrieve contributors at this time

203 lines (169 sloc) 6.156 kb
/*
* Copyright (C) 2010 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.
*/
#define LOG_TAG "NStorage"
#include <android/storage_manager.h>
#include <storage/IMountService.h>
#include <binder/Binder.h>
#include <binder/IServiceManager.h>
#include <utils/Atomic.h>
#include <utils/Log.h>
#include <utils/RefBase.h>
#include <utils/String8.h>
#include <utils/String16.h>
#include <utils/Vector.h>
#include <utils/threads.h>
using namespace android;
struct ObbActionListener : public BnObbActionListener {
private:
sp<AStorageManager> mStorageManager;
public:
ObbActionListener(AStorageManager* mgr) :
mStorageManager(mgr)
{}
virtual void onObbResult(const android::String16& filename, const int32_t nonce,
const int32_t state);
};
class ObbCallback {
public:
ObbCallback(int32_t _nonce, AStorageManager_obbCallbackFunc _cb, void* _data)
: nonce(_nonce)
, cb(_cb)
, data(_data)
{}
int32_t nonce;
AStorageManager_obbCallbackFunc cb;
void* data;
};
struct AStorageManager : public RefBase {
protected:
Mutex mCallbackLock;
Vector<ObbCallback*> mCallbacks;
volatile int32_t mNextNonce;
sp<ObbActionListener> mObbActionListener;
sp<IMountService> mMountService;
int32_t getNextNonce() {
return android_atomic_inc(&mNextNonce);
}
ObbCallback* registerObbCallback(AStorageManager_obbCallbackFunc func, void* data) {
ObbCallback* cb = new ObbCallback(getNextNonce(), func, data);
{
AutoMutex _l(mCallbackLock);
mCallbacks.push(cb);
}
return cb;
}
public:
AStorageManager()
{
}
bool initialize() {
sp<IServiceManager> sm = defaultServiceManager();
if (sm == NULL) {
ALOGE("Couldn't get default ServiceManager\n");
return false;
}
mMountService = interface_cast<IMountService>(sm->getService(String16("mount")));
if (mMountService == NULL) {
ALOGE("Couldn't get connection to MountService\n");
return false;
}
mObbActionListener = new ObbActionListener(this);
return true;
}
void fireCallback(const char* filename, const int32_t nonce, const int32_t state) {
ObbCallback* target = NULL;
{
AutoMutex _l(mCallbackLock);
int N = mCallbacks.size();
for (int i = 0; i < N; i++) {
ObbCallback* cb = mCallbacks.editItemAt(i);
if (cb->nonce == nonce) {
target = cb;
mCallbacks.removeAt(i);
break;
}
}
}
if (target != NULL) {
target->cb(filename, state, target->data);
delete target;
} else {
ALOGI("Didn't find the callback handler for: %s\n", filename);
}
}
void mountObb(const char* rawPath, const char* key, AStorageManager_obbCallbackFunc func,
void* data) {
// Resolve path before sending to MountService
char canonicalPath[PATH_MAX];
if (realpath(rawPath, canonicalPath) == NULL) {
ALOGE("mountObb failed to resolve path %s: %s", rawPath, strerror(errno));
return;
}
ObbCallback* cb = registerObbCallback(func, data);
String16 rawPath16(rawPath);
String16 canonicalPath16(canonicalPath);
String16 key16(key);
mMountService->mountObb(rawPath16, canonicalPath16, key16, mObbActionListener, cb->nonce);
}
void unmountObb(const char* filename, const bool force, AStorageManager_obbCallbackFunc func, void* data) {
ObbCallback* cb = registerObbCallback(func, data);
String16 filename16(filename);
mMountService->unmountObb(filename16, force, mObbActionListener, cb->nonce);
}
int isObbMounted(const char* filename) {
String16 filename16(filename);
return mMountService->isObbMounted(filename16);
}
const char* getMountedObbPath(const char* filename) {
String16 filename16(filename);
String16 path16;
if (mMountService->getMountedObbPath(filename16, path16)) {
return String8(path16).string();
} else {
return NULL;
}
}
};
void ObbActionListener::onObbResult(const android::String16& filename, const int32_t nonce, const int32_t state) {
mStorageManager->fireCallback(String8(filename).string(), nonce, state);
}
AStorageManager* AStorageManager_new() {
sp<AStorageManager> mgr = new AStorageManager();
if (mgr == NULL || !mgr->initialize()) {
return NULL;
}
mgr->incStrong((void*)AStorageManager_new);
return static_cast<AStorageManager*>(mgr.get());
}
void AStorageManager_delete(AStorageManager* mgr) {
if (mgr) {
mgr->decStrong((void*)AStorageManager_new);
}
}
void AStorageManager_mountObb(AStorageManager* mgr, const char* filename, const char* key,
AStorageManager_obbCallbackFunc cb, void* data) {
mgr->mountObb(filename, key, cb, data);
}
void AStorageManager_unmountObb(AStorageManager* mgr, const char* filename, const int force,
AStorageManager_obbCallbackFunc cb, void* data) {
mgr->unmountObb(filename, force != 0, cb, data);
}
int AStorageManager_isObbMounted(AStorageManager* mgr, const char* filename) {
return mgr->isObbMounted(filename) != 0;
}
const char* AStorageManager_getMountedObbPath(AStorageManager* mgr, const char* filename) {
return mgr->getMountedObbPath(filename);
}
Jump to Line
Something went wrong with that request. Please try again.