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