mirror of
https://git.openwrt.org/project/make_ext4fs.git
synced 2024-11-21 14:50:41 -05:00
116 lines
2.5 KiB
C
116 lines
2.5 KiB
C
/*
|
|
* 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
|
|
#define _GNU_SOURCE
|
|
|
|
#include <fcntl.h>
|
|
#include <stdbool.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <sys/types.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(-1);
|
|
}
|
|
|
|
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(-1);
|
|
}
|
|
|
|
s = sparse_file_import(in, true, false);
|
|
if (!s) {
|
|
fprintf(stderr, "Failed to import sparse file\n");
|
|
exit(-1);
|
|
}
|
|
|
|
files = sparse_file_resparse(s, max_size, NULL, 0);
|
|
if (files < 0) {
|
|
fprintf(stderr, "Failed to resparse\n");
|
|
exit(-1);
|
|
}
|
|
|
|
out_s = calloc(sizeof(struct sparse_file *), files);
|
|
if (!out_s) {
|
|
fprintf(stderr, "Failed to allocate sparse file array\n");
|
|
exit(-1);
|
|
}
|
|
|
|
files = sparse_file_resparse(s, max_size, out_s, files);
|
|
if (files < 0) {
|
|
fprintf(stderr, "Failed to resparse\n");
|
|
exit(-1);
|
|
}
|
|
|
|
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(-1);
|
|
}
|
|
|
|
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(-1);
|
|
}
|
|
|
|
ret = sparse_file_write(out_s[i], out, false, true, false);
|
|
if (ret) {
|
|
fprintf(stderr, "Failed to write sparse file\n");
|
|
exit(-1);
|
|
}
|
|
close(out);
|
|
}
|
|
|
|
close(in);
|
|
|
|
exit(0);
|
|
}
|