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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 <log/log.h>
#include <trusty_log.h>
#include "../OS.h"
#include "TrustyStatus.h"
#include <cstdarg>
using android::binder::borrowed_fd;
using android::binder::unique_fd;
namespace android::binder::os {
void trace_begin(uint64_t, const char*) {}
void trace_end(uint64_t) {}
uint64_t GetThreadId() {
return 0;
}
bool report_sysprop_change() {
return false;
}
status_t setNonBlocking(borrowed_fd /*fd*/) {
// Trusty IPC syscalls are all non-blocking by default.
return OK;
}
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<unique_fd, borrowed_fd>>* /* ancillaryFds */) {
errno = ENOTSUP;
return -1;
}
ssize_t receiveMessageFromSocket(
const RpcTransportFd& /* socket */, iovec* /* iovs */, int /* niovs */,
std::vector<std::variant<unique_fd, borrowed_fd>>* /* ancillaryFds */) {
errno = ENOTSUP;
return -1;
}
} // namespace android::binder::os
int __android_log_print(int prio [[maybe_unused]], const char* tag, const char* fmt, ...) {
#ifdef TRUSTY_USERSPACE
#define trusty_tlog _tlog
#define trusty_vtlog _vtlog
#else
// mapping taken from kernel trusty_log.h (TLOGx)
int kernelLogLevel;
if (prio <= ANDROID_LOG_DEBUG) {
kernelLogLevel = LK_DEBUGLEVEL_ALWAYS;
} else if (prio == ANDROID_LOG_INFO) {
kernelLogLevel = LK_DEBUGLEVEL_SPEW;
} else if (prio == ANDROID_LOG_WARN) {
kernelLogLevel = LK_DEBUGLEVEL_INFO;
} else if (prio == ANDROID_LOG_ERROR) {
kernelLogLevel = LK_DEBUGLEVEL_CRITICAL;
} else { /* prio >= ANDROID_LOG_FATAL */
kernelLogLevel = LK_DEBUGLEVEL_CRITICAL;
}
#if LK_DEBUGLEVEL_NO_ALIASES
auto LK_DEBUGLEVEL_kernelLogLevel = kernelLogLevel;
#endif
#define trusty_tlog(...) _tlog(kernelLogLevel, __VA_ARGS__)
#define trusty_vtlog(...) _vtlog(kernelLogLevel, __VA_ARGS__)
#endif
va_list args;
va_start(args, fmt);
trusty_tlog((tag[0] == '\0') ? "libbinder" : "libbinder-");
trusty_vtlog(fmt, args);
va_end(args);
return 1;
}
// TODO(b/285204695): remove once trusty mock doesn't depend on libbase
extern "C" int __android_log_buf_print(int, int, const char*, const char*, ...) {
return -ENOSYS;
}
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