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/types.h>
26 #include <sys/stat.h>
27 #include <sys/types.h>
28 #include <unistd.h>
29
30 #include <sparse/sparse.h>
31
32 #ifndef O_BINARY
33 #define O_BINARY 0
34 #endif
35
36 #if defined(__APPLE__) && defined(__MACH__)
37 #define lseek64 lseek
38 #define off64_t off_t
39 #endif
40
usage()41 void usage()
42 {
43 fprintf(stderr, "Usage: img2simg <raw_image_file> <sparse_image_file> [<block_size>]\n");
44 }
45
main(int argc,char * argv[])46 int main(int argc, char *argv[])
47 {
48 int in;
49 int out;
50 int ret;
51 struct sparse_file *s;
52 unsigned int block_size = 4096;
53 off64_t len;
54
55 if (argc < 3 || argc > 4) {
56 usage();
57 exit(-1);
58 }
59
60 if (argc == 4) {
61 block_size = atoi(argv[3]);
62 }
63
64 if (block_size < 1024 || block_size % 4 != 0) {
65 usage();
66 exit(-1);
67 }
68
69 if (strcmp(argv[1], "-") == 0) {
70 in = STDIN_FILENO;
71 } else {
72 in = open(argv[1], O_RDONLY | O_BINARY);
73 if (in < 0) {
74 fprintf(stderr, "Cannot open input file %s\n", argv[1]);
75 exit(-1);
76 }
77 }
78
79 if (strcmp(argv[2], "-") == 0) {
80 out = STDOUT_FILENO;
81 } else {
82 out = open(argv[2], O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, 0664);
83 if (out < 0) {
84 fprintf(stderr, "Cannot open output file %s\n", argv[2]);
85 exit(-1);
86 }
87 }
88
89 len = lseek64(in, 0, SEEK_END);
90 lseek64(in, 0, SEEK_SET);
91
92 s = sparse_file_new(block_size, len);
93 if (!s) {
94 fprintf(stderr, "Failed to create sparse file\n");
95 exit(-1);
96 }
97
98 sparse_file_verbose(s);
99 ret = sparse_file_read(s, in, false, false);
100 if (ret) {
101 fprintf(stderr, "Failed to read file\n");
102 exit(-1);
103 }
104
105 ret = sparse_file_write(s, out, false, true, false);
106 if (ret) {
107 fprintf(stderr, "Failed to write sparse file\n");
108 exit(-1);
109 }
110
111 close(in);
112 close(out);
113
114 exit(0);
115 }
116