1 /*
2 * Copyright (C) 2010 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 <sparse/sparse.h>
18
19 #include <fcntl.h>
20 #include <stdbool.h>
21 #include <stdio.h>
22 #include <stdlib.h>
23 #include <string.h>
24 #include <sys/stat.h>
25 #include <sys/types.h>
26 #include <unistd.h>
27
28 #ifndef O_BINARY
29 #define O_BINARY 0
30 #endif
31
usage()32 void usage() {
33 fprintf(stderr, "Usage: simg2img <sparse_image_files> <raw_image_file>\n");
34 }
35
main(int argc,char * argv[])36 int main(int argc, char* argv[]) {
37 int in;
38 int out;
39 int i;
40 struct sparse_file* s;
41
42 if (argc < 3) {
43 usage();
44 exit(EXIT_FAILURE);
45 }
46
47 out = open(argv[argc - 1], O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, 0664);
48 if (out < 0) {
49 fprintf(stderr, "Cannot open output file %s\n", argv[argc - 1]);
50 exit(EXIT_FAILURE);
51 }
52
53 for (i = 1; i < argc - 1; i++) {
54 if (strcmp(argv[i], "-") == 0) {
55 in = STDIN_FILENO;
56 } else {
57 in = open(argv[i], O_RDONLY | O_BINARY);
58 if (in < 0) {
59 fprintf(stderr, "Cannot open input file %s\n", argv[i]);
60 exit(EXIT_FAILURE);
61 }
62 }
63
64 s = sparse_file_import(in, true, false);
65 if (!s) {
66 fprintf(stderr, "Failed to read sparse file\n");
67 exit(EXIT_FAILURE);
68 }
69
70 if (lseek(out, 0, SEEK_SET) == -1) {
71 perror("lseek failed");
72 exit(EXIT_FAILURE);
73 }
74
75 if (sparse_file_write(s, out, false, false, false) < 0) {
76 fprintf(stderr, "Cannot write output file\n");
77 exit(EXIT_FAILURE);
78 }
79 sparse_file_destroy(s);
80 close(in);
81 }
82
83 close(out);
84
85 exit(EXIT_SUCCESS);
86 }
87