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 #include <sys/cdefs.h> 23 24 #define MAX_PATH 4096 25 #define MAX_FILE_VERSION 100 26 27 #ifndef __STRING 28 #define __STRING(x) #x 29 #endif 30 #define ___STRING(x) __STRING(x) 31 32 static void usage(char *filename) 33 { 34 fprintf(stderr, "Usage: %s input_blk_alloc_file output_base_fs_file \n", filename); 35 } 36 37 int main(int argc, char **argv) 38 { 39 FILE *blk_alloc_file = NULL, *base_fs_file = NULL; 40 char filename[MAX_PATH+1], file_version[MAX_FILE_VERSION+1], *spaced_allocs = NULL; 41 size_t spaced_allocs_len = 0; 42 43 if (argc != 3) { 44 usage(argv[0]); 45 exit(EXIT_FAILURE); 46 } 47 blk_alloc_file = fopen(argv[1], "r"); 48 if (blk_alloc_file == NULL) { 49 fprintf(stderr, "failed to open %s: %s\n", argv[1], strerror(errno)); 50 exit(EXIT_FAILURE); 51 } 52 base_fs_file = fopen(argv[2], "w"); 53 if (base_fs_file == NULL) { 54 fprintf(stderr, "failed to open %s: %s\n", argv[2], strerror(errno)); 55 exit(EXIT_FAILURE); 56 } 57 if (fscanf(blk_alloc_file, "Base EXT4 version %" ___STRING(MAX_FILE_VERSION) "s", file_version) > 0) { 58 char c; 59 printf("%s is already in *.base_fs format, just copying into %s...\n", argv[1], argv[2]); 60 rewind(blk_alloc_file); 61 while ((c = fgetc(blk_alloc_file)) != EOF) { 62 fputc(c, base_fs_file); 63 } 64 return 0; 65 } else { 66 printf("Converting %s into *.base_fs format as %s...\n", argv[1], argv[2]); 67 rewind(blk_alloc_file); 68 } 69 fprintf(base_fs_file, "Base EXT4 version 1.0\n"); 70 while(fscanf(blk_alloc_file, "%" ___STRING(MAX_PATH) "s ", filename) != EOF) { 71 int i; 72 fprintf(base_fs_file, "%s ", filename); 73 if (getline(&spaced_allocs, &spaced_allocs_len, blk_alloc_file) == -1) { 74 fprintf(stderr, "Bad blk_alloc format\n"); 75 exit(EXIT_FAILURE); 76 } 77 for (i = 0; spaced_allocs[i]; i++) { 78 if (spaced_allocs[i] == ' ') { 79 if (!isspace(spaced_allocs[i + 1])) fputc(',', base_fs_file); 80 } else fputc(spaced_allocs[i], base_fs_file); 81 } 82 } 83 free(spaced_allocs); 84 fclose(blk_alloc_file); 85 fclose(base_fs_file); 86 return 0; 87 } 88
