blob: 402b37b0f7fb3c5d37211b871084bd583043f8a1 [file] [log] [blame]
/*
* Copyright (C) 2017 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 "server.h"
#include <binder/IPCThreadState.h>
#include <private/android_filesystem_config.h>
static bool isSystemUser() {
uid_t uid = IPCThreadState::self()->getCallingUid();
uid_t aid = uid % AID_USER_OFFSET;
switch (aid) {
case AID_ROOT:
case AID_SYSTEM: {
return true;
} break;
default: {
ALOGE("aid %u (uid %u) is not root nor system - access denied", aid, uid);
} break;
}
return false;
}
namespace procfsinspector {
class BpProcfsInspector: public BpInterface<IProcfsInspector> {
public:
BpProcfsInspector(sp<IBinder> binder) : BpInterface<IProcfsInspector>(binder) {}
virtual std::vector<ProcessInfo> readProcessTable() override {
Parcel data, reply;
remote()->transact((uint32_t)IProcfsInspector::Call::READ_PROCESS_TABLE, data, &reply);
std::vector<procfsinspector::ProcessInfo> result;
reply.readParcelableVector(&result);
return result;
}
};
IMPLEMENT_META_INTERFACE(ProcfsInspector, "com.android.car.procfsinspector.IProcfsInspector");
status_t Impl::onTransact(uint32_t code,
const Parcel& data, Parcel* reply, uint32_t flags) {
if (code == (uint32_t)IProcfsInspector::Call::READ_PROCESS_TABLE) {
CHECK_INTERFACE(IProcfsInspector, data, reply);
if (isSystemUser()) {
reply->writeNoException();
reply->writeParcelableVector(readProcessTable());
return NO_ERROR;
} else {
return PERMISSION_DENIED;
}
}
return BBinder::onTransact(code, data, reply, flags);
}
}