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/*
* Copyright (C) 2024 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 <android-base/logging.h>
#include <android-base/properties.h>
#include <bootloader_message/bootloader_message.h>
#include <log/log.h>
#include <string>
#include <cstdio>
static int check_control_message() {
misc_control_message m;
std::string err;
if (!ReadMiscControlMessage(&m, &err)) {
LOG(ERROR) << "Could not read misctrl message: " << err.c_str();
return 1;
}
if (m.magic != MISC_CONTROL_MAGIC_HEADER || m.version != MISC_CONTROL_MESSAGE_VERSION) {
LOG(WARNING) << "misctrl message invalid, resetting it";
m = { .version = MISC_CONTROL_MESSAGE_VERSION,
.magic = MISC_CONTROL_MAGIC_HEADER,
.misctrl_flags = 0 };
}
int res = 0;
const size_t ps = getpagesize();
if (ps != 4096 && ps != 16384) {
LOG(ERROR) << "Unrecognized page size: " << ps;
res = 1;
}
if (ps == 16384) {
m.misctrl_flags |= MISC_CONTROL_16KB_BEFORE;
}
bool before_16kb = m.misctrl_flags & MISC_CONTROL_16KB_BEFORE;
res |= android::base::SetProperty("ro.misctrl.16kb_before", before_16kb ? "1" : "0");
if (!WriteMiscControlMessage(m, &err)) {
LOG(ERROR) << "Could not write misctrl message: " << err.c_str();
res |= 1;
}
return res;
}
static int check_reserved_space() {
bool empty;
std::string err;
bool success = CheckReservedSystemSpaceEmpty(&empty, &err);
if (!success) {
LOG(ERROR) << "Could not read reserved space: " << err.c_str();
return 1;
}
LOG(INFO) << "System reserved space empty? " << empty;
if (!err.empty()) {
LOG(ERROR) << "Reserved misc space being used: " << err;
}
return empty ? 0 : 1;
}
int main(int argc, char** argv) {
{
using namespace android::base;
(void)argc;
InitLogging(argv, TeeLogger(LogdLogger(), &StderrLogger));
}
int err = 0;
err |= check_control_message();
err |= check_reserved_space();
return err;
}
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