1 /*
2 * Copyright (C) 2012 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 #define _FILE_OFFSET_BITS 64
18 #define _LARGEFILE64_SOURCE 1
19
20 #include <fcntl.h>
21 #include <stdbool.h>
22 #include <stdio.h>
23 #include <stdlib.h>
24 #include <string.h>
25 #include <sys/stat.h>
26 #include <sys/types.h>
27 #include <unistd.h>
28
29 #include <sparse/sparse.h>
30
31 #ifndef O_BINARY
32 #define O_BINARY 0
33 #endif
34
35 #if defined(__APPLE__) && defined(__MACH__)
36 #define lseek64 lseek
37 #define off64_t off_t
38 #endif
39
usage()40 void usage() {
41 fprintf(stderr, "Usage: img2simg <raw_image_file> <sparse_image_file> [<block_size>]\n");
42 }
43
main(int argc,char * argv[])44 int main(int argc, char* argv[]) {
45 int in;
46 int out;
47 int ret;
48 struct sparse_file* s;
49 unsigned int block_size = 4096;
50 off64_t len;
51
52 if (argc < 3 || argc > 4) {
53 usage();
54 exit(-1);
55 }
56
57 if (argc == 4) {
58 block_size = atoi(argv[3]);
59 }
60
61 if (block_size < 1024 || block_size % 4 != 0) {
62 usage();
63 exit(-1);
64 }
65
66 if (strcmp(argv[1], "-") == 0) {
67 in = STDIN_FILENO;
68 } else {
69 in = open(argv[1], O_RDONLY | O_BINARY);
70 if (in < 0) {
71 fprintf(stderr, "Cannot open input file %s\n", argv[1]);
72 exit(-1);
73 }
74 }
75
76 if (strcmp(argv[2], "-") == 0) {
77 out = STDOUT_FILENO;
78 } else {
79 out = open(argv[2], O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, 0664);
80 if (out < 0) {
81 fprintf(stderr, "Cannot open output file %s\n", argv[2]);
82 exit(-1);
83 }
84 }
85
86 len = lseek64(in, 0, SEEK_END);
87 lseek64(in, 0, SEEK_SET);
88
89 s = sparse_file_new(block_size, len);
90 if (!s) {
91 fprintf(stderr, "Failed to create sparse file\n");
92 exit(-1);
93 }
94
95 sparse_file_verbose(s);
96 ret = sparse_file_read(s, in, false, false);
97 if (ret) {
98 fprintf(stderr, "Failed to read file\n");
99 exit(-1);
100 }
101
102 ret = sparse_file_write(s, out, false, true, false);
103 if (ret) {
104 fprintf(stderr, "Failed to write sparse file\n");
105 exit(-1);
106 }
107
108 close(in);
109 close(out);
110
111 exit(0);
112 }
113