131 lines
2.9 KiB
C++
131 lines
2.9 KiB
C++
/*
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* Copyright (C) 2012 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#define _FILE_OFFSET_BITS 64
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#define _LARGEFILE64_SOURCE 1
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#include <fcntl.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include <sparse/sparse.h>
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#ifndef O_BINARY
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#define O_BINARY 0
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#endif
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#if defined(__APPLE__) && defined(__MACH__)
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#define lseek64 lseek
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#define off64_t off_t
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#endif
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void usage() {
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fprintf(stderr, "Usage: img2simg [-s] <raw_image_file> <sparse_image_file> [<block_size>]\n");
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}
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int main(int argc, char* argv[]) {
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char *arg_in;
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char *arg_out;
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enum sparse_read_mode mode = SPARSE_READ_MODE_NORMAL;
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int extra;
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int in;
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int opt;
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int out;
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int ret;
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struct sparse_file* s;
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unsigned int block_size = 4096;
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off64_t len;
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while ((opt = getopt(argc, argv, "s")) != -1) {
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switch (opt) {
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case 's':
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mode = SPARSE_READ_MODE_HOLE;
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break;
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default:
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usage();
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exit(EXIT_FAILURE);
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}
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}
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extra = argc - optind;
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if (extra < 2 || extra > 3) {
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usage();
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exit(EXIT_FAILURE);
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}
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if (extra == 3) {
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block_size = atoi(argv[optind + 2]);
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}
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if (block_size < 1024 || block_size % 4 != 0) {
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usage();
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exit(EXIT_FAILURE);
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}
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arg_in = argv[optind];
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if (strcmp(arg_in, "-") == 0) {
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in = STDIN_FILENO;
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} else {
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in = open(arg_in, O_RDONLY | O_BINARY);
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if (in < 0) {
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fprintf(stderr, "Cannot open input file %s\n", arg_in);
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exit(EXIT_FAILURE);
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}
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}
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arg_out = argv[optind + 1];
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if (strcmp(arg_out, "-") == 0) {
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out = STDOUT_FILENO;
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} else {
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out = open(arg_out, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, 0664);
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if (out < 0) {
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fprintf(stderr, "Cannot open output file %s\n", arg_out);
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exit(EXIT_FAILURE);
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}
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}
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len = lseek64(in, 0, SEEK_END);
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lseek64(in, 0, SEEK_SET);
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s = sparse_file_new(block_size, len);
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if (!s) {
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fprintf(stderr, "Failed to create sparse file\n");
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exit(EXIT_FAILURE);
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}
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sparse_file_verbose(s);
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ret = sparse_file_read(s, in, mode, false);
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if (ret) {
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fprintf(stderr, "Failed to read file\n");
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exit(EXIT_FAILURE);
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}
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ret = sparse_file_write(s, out, false, true, false);
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if (ret) {
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fprintf(stderr, "Failed to write sparse file\n");
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exit(EXIT_FAILURE);
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}
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close(in);
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close(out);
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exit(EXIT_SUCCESS);
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}
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