1 /* 2 * Copyright (C) 2016 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 <ctype.h> 18 #include <errno.h> 19 #include <stdio.h> 20 #include <stdlib.h> 21 #include <string.h> 22 23 #define MAX_PATH 4096 24 #define MAX_FILE_VERSION 100 25 usage(char * filename)26 static void usage(char *filename) 27 { 28 fprintf(stderr, "Usage: %s input_blk_alloc_file output_base_fs_file \n", filename); 29 } 30 main(int argc,char ** argv)31 int main(int argc, char **argv) 32 { 33 FILE *blk_alloc_file = NULL, *base_fs_file = NULL; 34 char filename[MAX_PATH], file_version[MAX_FILE_VERSION], *spaced_allocs = NULL; 35 size_t spaced_allocs_len = 0; 36 37 if (argc != 3) { 38 usage(argv[0]); 39 exit(EXIT_FAILURE); 40 } 41 blk_alloc_file = fopen(argv[1], "r"); 42 if (blk_alloc_file == NULL) { 43 fprintf(stderr, "failed to open %s: %s\n", argv[1], strerror(errno)); 44 exit(EXIT_FAILURE); 45 } 46 base_fs_file = fopen(argv[2], "w"); 47 if (base_fs_file == NULL) { 48 fprintf(stderr, "failed to open %s: %s\n", argv[2], strerror(errno)); 49 exit(EXIT_FAILURE); 50 } 51 if (fscanf(blk_alloc_file, "Base EXT4 version %s", file_version) > 0) { 52 char c; 53 printf("%s is already in *.base_fs format, just copying into %s...\n", argv[1], argv[2]); 54 rewind(blk_alloc_file); 55 while ((c = fgetc(blk_alloc_file)) != EOF) { 56 fputc(c, base_fs_file); 57 } 58 return 0; 59 } else { 60 printf("Converting %s into *.base_fs format as %s...\n", argv[1], argv[2]); 61 rewind(blk_alloc_file); 62 } 63 fprintf(base_fs_file, "Base EXT4 version 1.0\n"); 64 while(fscanf(blk_alloc_file, "%s ", filename) != EOF) { 65 int i; 66 fprintf(base_fs_file, "%s ", filename); 67 if (getline(&spaced_allocs, &spaced_allocs_len, blk_alloc_file) == -1) { 68 fprintf(stderr, "Bad blk_alloc format\n"); 69 exit(EXIT_FAILURE); 70 } 71 for (i = 0; spaced_allocs[i]; i++) { 72 if (spaced_allocs[i] == ' ') { 73 if (!isspace(spaced_allocs[i + 1])) fputc(',', base_fs_file); 74 } else fputc(spaced_allocs[i], base_fs_file); 75 } 76 } 77 free(spaced_allocs); 78 fclose(blk_alloc_file); 79 fclose(base_fs_file); 80 return 0; 81 } 82