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/*
* Copyright (C) 2016 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 "ShellCallback"
#include <unistd.h>
#include <fcntl.h>
#include <binder/IShellCallback.h>
#include <utils/Log.h>
#include <binder/Parcel.h>
#include <utils/String8.h>
namespace android {
// ----------------------------------------------------------------------
class BpShellCallback : public BpInterface<IShellCallback>
{
public:
explicit BpShellCallback(const sp<IBinder>& impl)
: BpInterface<IShellCallback>(impl)
{
}
virtual int openFile(const String16& path, const String16& seLinuxContext,
const String16& mode) {
Parcel data, reply;
data.writeInterfaceToken(IShellCallback::getInterfaceDescriptor());
data.writeString16(path);
data.writeString16(seLinuxContext);
data.writeString16(mode);
remote()->transact(OP_OPEN_OUTPUT_FILE, data, &reply, 0);
reply.readExceptionCode();
int fd = reply.readParcelFileDescriptor();
return fd >= 0 ? fcntl(fd, F_DUPFD_CLOEXEC, 0) : fd;
}
};
IMPLEMENT_META_INTERFACE(ShellCallback, "com.android.internal.os.IShellCallback")
// ----------------------------------------------------------------------
// NOLINTNEXTLINE(google-default-arguments)
status_t BnShellCallback::onTransact(
uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
{
switch(code) {
case OP_OPEN_OUTPUT_FILE: {
CHECK_INTERFACE(IShellCallback, data, reply);
String16 path(data.readString16());
String16 seLinuxContext(data.readString16());
String16 mode(data.readString16());
int fd = openFile(path, seLinuxContext, mode);
if (reply != nullptr) {
reply->writeNoException();
if (fd >= 0) {
reply->writeInt32(1);
reply->writeParcelFileDescriptor(fd, true);
} else {
reply->writeInt32(0);
}
} else if (fd >= 0) {
close(fd);
}
return NO_ERROR;
} break;
default:
return BBinder::onTransact(code, data, reply, flags);
}
}
} // namespace android
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