simg2img.c revision 0c4c47f88dfc15cada154a1cf9b4db88b49890f0 
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/types.h>
25#include <sys/stat.h>
26#include <sys/types.h>
27#include <unistd.h>
28
29void usage()
30{
31  fprintf(stderr, "Usage: simg2img <sparse_image_file> <raw_image_file>\n");
32}
33
34int main(int argc, char *argv[])
35{
36	int in;
37	int out;
38	unsigned int i;
39	int ret;
40	struct sparse_file *s;
41
42	if (argc != 3) {
43		usage();
44		exit(-1);
45	}
46
47	if (strcmp(argv[1], "-") == 0) {
48		in = STDIN_FILENO;
49	} else {
50		if ((in = open(argv[1], O_RDONLY)) == 0) {
51			fprintf(stderr, "Cannot open input file %s\n", argv[1]);
52			exit(-1);
53		}
54	}
55
56	if (strcmp(argv[2], "-") == 0) {
57		out = STDOUT_FILENO;
58	} else {
59		if ((out = open(argv[2], O_WRONLY | O_CREAT | O_TRUNC, 0666)) == 0) {
60			fprintf(stderr, "Cannot open output file %s\n", argv[2]);
61			exit(-1);
62		}
63	}
64
65	s = sparse_file_import(in, true, false);
66	if (!s) {
67		fprintf(stderr, "Failed to read sparse file\n");
68		exit(-1);
69	}
70	ret = sparse_file_write(s, out, false, false, false);
71
72	close(in);
73	close(out);
74
75	exit(0);
76}
77
78