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/*
* Copyright (C) 2022 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.
*/
#if defined(TRUSTY_USERSPACE)
#include <openssl/rand.h>
#include <trusty_ipc.h>
#else
#include <lib/rand/rand.h>
#endif
#include <binder/RpcTransportTipcTrusty.h>
#include "../OS.h"
#include "TrustyStatus.h"
using android::base::Result;
namespace android {
Result<void> setNonBlocking(android::base::borrowed_fd /*fd*/) {
// Trusty IPC syscalls are all non-blocking by default.
return {};
}
status_t getRandomBytes(uint8_t* data, size_t size) {
#if defined(TRUSTY_USERSPACE)
int res = RAND_bytes(data, size);
return res == 1 ? OK : UNKNOWN_ERROR;
#else
int res = rand_get_bytes(data, size);
return res == 0 ? OK : UNKNOWN_ERROR;
#endif // TRUSTY_USERSPACE
}
status_t dupFileDescriptor(int oldFd, int* newFd) {
int res = dup(oldFd);
if (res < 0) {
return statusFromTrusty(res);
}
*newFd = res;
return OK;
}
std::unique_ptr<RpcTransportCtxFactory> makeDefaultRpcTransportCtxFactory() {
return RpcTransportCtxFactoryTipcTrusty::make();
}
ssize_t sendMessageOnSocket(
const RpcTransportFd& /* socket */, iovec* /* iovs */, int /* niovs */,
const std::vector<std::variant<base::unique_fd, base::borrowed_fd>>* /* ancillaryFds */) {
errno = ENOTSUP;
return -1;
}
ssize_t receiveMessageFromSocket(
const RpcTransportFd& /* socket */, iovec* /* iovs */, int /* niovs */,
std::vector<std::variant<base::unique_fd, base::borrowed_fd>>* /* ancillaryFds */) {
errno = ENOTSUP;
return -1;
}
} // namespace android
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