1 /*
2 * Copyright (C) 2018 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include <stdio.h>
18 #include <stdlib.h>
19 #include <fstream>
20
21 #include "ufdt_test_overlay.h"
22
23 extern "C" {
24
25 #include "ufdt_overlay.h"
26 #include "libufdt_sysdeps.h"
27
28 }
29
read_file_to_buf(const char * filename,char ** buf)30 size_t read_file_to_buf(const char *filename, char** buf) {
31 size_t size = 0;
32 std::ifstream file(filename, std::ios::binary | std::ios::in);
33
34 if (!file) {
35 return size;
36 }
37
38 file.seekg(0, file.end);
39 size = file.tellg();
40 file.seekg(0, std::ios::beg);
41
42 *buf = new char[size];
43 file.read(*buf, size);
44 return size;
45 }
46
verify_overlay_files(const char * final_filename,char ** overlay_filenames,size_t overlay_count)47 int verify_overlay_files(const char *final_filename,
48 char** overlay_filenames, size_t overlay_count) {
49 char* final_buf = nullptr;
50 void** overlay_buf_array = new void*[overlay_count];
51 struct fdt_header *blob = nullptr;
52 int result = 1;
53 size_t final_size = 0, overlay_size = 0;
54
55 final_size = read_file_to_buf(final_filename, &final_buf);
56 if (final_size == 0) {
57 fprintf(stderr, "Cannot load final DTB: %s \n", final_filename);
58 goto end;
59 }
60
61 for (size_t i = 0; i < overlay_count; i++) {
62 overlay_size = read_file_to_buf(overlay_filenames[i],
63 reinterpret_cast<char**>(&overlay_buf_array[i]));
64 if (overlay_size == 0) {
65 fprintf(stderr, "Cannot load DTB Overlay: %s\n", overlay_filenames[i]);
66 goto end;
67 }
68 }
69
70 blob = ufdt_install_blob(final_buf, final_size);
71 if (!blob) {
72 fprintf(stderr, "ufdt_install_blob() returns null\n");
73 goto end;
74 }
75
76 result = ufdt_verify_dtbo(blob, final_size, overlay_buf_array, overlay_count);
77
78 if (result != 0) {
79 fprintf(stderr, "bad overlay error");
80 }
81
82 end:
83 // Do not dto_free(blob) - it's the same as final_buf.
84 for (size_t i = 0; i < overlay_count; i++) {
85 if (overlay_buf_array[i]) dto_free(overlay_buf_array[i]);
86 }
87 delete[] overlay_buf_array;
88
89 if (final_buf) dto_free(final_buf);
90
91 return result;
92 }
93
main(int argc,char ** argv)94 int main(int argc, char **argv) {
95 if (argc < 3) {
96 fprintf(stderr, "Usage: %s <final_file> <overlay_file1> <overlay_file2> ..\n", argv[0]);
97 return 1;
98 }
99
100 const char *final_file = argv[1];
101 char** overlay_file_names = new char*[argc - 2];
102
103 for(int argv_idx = 2; argv_idx < argc; argv_idx++) {
104 overlay_file_names[argv_idx - 2] = argv[argv_idx];
105 }
106 int ret = verify_overlay_files(final_file, overlay_file_names, argc - 2);
107
108 return ret == 0 ? ret : 1;
109 }
110