| /* |
| * Copyright (C) 2016 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 "util.h" |
| |
| #include <stdio.h> |
| #include <stdlib.h> |
| |
| #include "libfdt.h" |
| #include "libufdt_sysdeps.h" |
| |
| static char *load_file_contents(FILE *fp, size_t *len_ptr) { |
| // Gets the file size. |
| fseek(fp, 0, SEEK_END); |
| size_t len = ftell(fp); |
| fseek(fp, 0, SEEK_SET); |
| |
| char *buf = malloc(len); |
| if (buf == NULL) { |
| return NULL; |
| } |
| |
| if (fread(buf, len, 1, fp) != 1) { |
| free(buf); |
| return NULL; |
| } |
| |
| if (len_ptr) { |
| *len_ptr = len; |
| } |
| |
| return buf; |
| } |
| |
| char *load_file(const char *filename, size_t *len_ptr) { |
| FILE *fp = fopen(filename, "r"); |
| if (!fp) { |
| return NULL; |
| } |
| |
| char *buf = load_file_contents(fp, len_ptr); |
| |
| fclose(fp); |
| |
| return buf; |
| } |
| |
| int write_buf_to_file(const char *filename, |
| const void *buf, size_t buf_size) { |
| int ret = 0; |
| FILE *fout = NULL; |
| |
| fout = fopen(filename, "wb"); |
| if (!fout) { |
| ret = 1; |
| goto end; |
| } |
| if (fwrite(buf, 1, buf_size, fout) < 1) { |
| ret = 2; |
| goto end; |
| } |
| |
| end: |
| if (fout) fclose(fout); |
| |
| return ret; |
| } |
| |
| int write_fdt_to_file(const char *filename, const void *fdt) { |
| return write_buf_to_file(filename, fdt, fdt_totalsize(fdt)); |
| } |