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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
void usage() {
fprintf(stderr, "Usage: simg2simg <sparse image file> <sparse_image_file> <max_size>\n");
}
int main(int argc, char* argv[]) {
int in;
int out;
int i;
int ret;
struct sparse_file* s;
int64_t max_size;
struct sparse_file** out_s;
int files;
char filename[4096];
if (argc != 4) {
usage();
exit(EXIT_FAILURE);
}
max_size = atoll(argv[3]);
in = open(argv[1], O_RDONLY | O_BINARY);
if (in < 0) {
fprintf(stderr, "Cannot open input file %s\n", argv[1]);
exit(EXIT_FAILURE);
}
s = sparse_file_import(in, true, false);
if (!s) {
fprintf(stderr, "Failed to import sparse file\n");
exit(EXIT_FAILURE);
}
files = sparse_file_resparse(s, max_size, nullptr, 0);
if (files < 0) {
fprintf(stderr, "Failed to resparse\n");
exit(EXIT_FAILURE);
}
out_s = (struct sparse_file**)calloc(sizeof(struct sparse_file*), files);
if (!out_s) {
fprintf(stderr, "Failed to allocate sparse file array\n");
exit(EXIT_FAILURE);
}
files = sparse_file_resparse(s, max_size, out_s, files);
if (files < 0) {
fprintf(stderr, "Failed to resparse\n");
exit(EXIT_FAILURE);
}
for (i = 0; i < files; i++) {
ret = snprintf(filename, sizeof(filename), "%s.%d", argv[2], i);
if (ret >= (int)sizeof(filename)) {
fprintf(stderr, "Filename too long\n");
exit(EXIT_FAILURE);
}
out = open(filename, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, 0664);
if (out < 0) {
fprintf(stderr, "Cannot open output file %s\n", argv[2]);
exit(EXIT_FAILURE);
}
ret = sparse_file_write(out_s[i], out, false, true, false);
if (ret) {
fprintf(stderr, "Failed to write sparse file\n");
exit(EXIT_FAILURE);
}
close(out);
}
close(in);
exit(EXIT_SUCCESS);
}
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