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 41 void usage() 42 { 43 fprintf(stderr, "Usage: img2simg <raw_image_file> <sparse_image_file> [<block_size>]\n"); 44 } 45 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
