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/*
* Copyright (C) 2018 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 <stdio.h>
#include <stdlib.h>
#include <fstream>
#include "ufdt_test_overlay.h"
extern "C" {
#include "ufdt_overlay.h"
#include "libufdt_sysdeps.h"
}
size_t read_file_to_buf(const char *filename, char** buf) {
size_t size = 0;
std::ifstream file(filename, std::ios::binary | std::ios::in);
if (!file) {
return size;
}
file.seekg(0, file.end);
size = file.tellg();
file.seekg(0, std::ios::beg);
*buf = new char[size];
file.read(*buf, size);
return size;
}
int verify_overlay_files(const char *final_filename,
const char *overlay_filename) {
char *final_buf = nullptr;
char *overlay_buf = nullptr;
struct fdt_header *blob = nullptr;
int result = 1;
size_t final_size = 0, overlay_size = 0;
final_size = read_file_to_buf(final_filename, &final_buf);
if (final_size == 0) {
fprintf(stderr, "Cannot load final DTB: %s \n", final_filename);
goto end;
}
overlay_size = read_file_to_buf(overlay_filename, &overlay_buf);
if (overlay_size == 0) {
fprintf(stderr, "Cannot load DTB Overlay: %s\n", overlay_filename);
goto end;
}
blob = ufdt_install_blob(final_buf, final_size);
if (!blob) {
fprintf(stderr, "ufdt_install_blob() returns null\n");
goto end;
}
result = ufdt_verify_dtbo(blob, final_size, overlay_buf, overlay_size);
if (result != 0) {
fprintf(stderr, "bad overlay error: %s\n", overlay_filename);
}
end:
// Do not dto_free(blob) - it's the same as final_buf.
if (overlay_buf) dto_free(overlay_buf);
if (final_buf) dto_free(final_buf);
return result;
}
int main(int argc, char **argv) {
if (argc < 3) {
fprintf(stderr, "Usage: %s <final_file> <overlay_file>\n", argv[0]);
return 1;
}
const char *final_file = argv[1];
const char *overlay_file = argv[2];
int ret = verify_overlay_files(final_file, overlay_file);
return ret == 0 ? ret : 1;
}
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