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
usage(char * filename)32 static void usage(char *filename)
33 {
34 fprintf(stderr, "Usage: %s input_blk_alloc_file output_base_fs_file \n", filename);
35 }
36
main(int argc,char ** argv)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 int 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