bdc6d39ed6
Add sparse_file_repsarse, which splits chunks in an existing sparse file such that the maximum size of a chunk, plus a header and footer, is smaller than the given size. This will allow multiple smaller sparse files to result in the same data as a large sparse file. Change-Id: I177abdb958a23d5afd394ff265c5b0c6a3ff22fa
89 lines
1.9 KiB
C
89 lines
1.9 KiB
C
/*
|
|
* Copyright (C) 2010 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.
|
|
*/
|
|
|
|
#include <sparse/sparse.h>
|
|
|
|
#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>
|
|
|
|
#ifndef O_BINARY
|
|
#define O_BINARY 0
|
|
#endif
|
|
|
|
void usage()
|
|
{
|
|
fprintf(stderr, "Usage: simg2img <sparse_image_files> <raw_image_file>\n");
|
|
}
|
|
|
|
int main(int argc, char *argv[])
|
|
{
|
|
int in;
|
|
int out;
|
|
int i;
|
|
int ret;
|
|
struct sparse_file *s;
|
|
|
|
if (argc < 3) {
|
|
usage();
|
|
exit(-1);
|
|
}
|
|
|
|
out = open(argv[argc - 1], O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, 0664);
|
|
if (out < 0) {
|
|
fprintf(stderr, "Cannot open output file %s\n", argv[argc - 1]);
|
|
exit(-1);
|
|
}
|
|
|
|
for (i = 1; i < argc - 1; i++) {
|
|
if (strcmp(argv[i], "-") == 0) {
|
|
in = STDIN_FILENO;
|
|
} else {
|
|
in = open(argv[i], O_RDONLY | O_BINARY);
|
|
if (in < 0) {
|
|
fprintf(stderr, "Cannot open input file %s\n", argv[i]);
|
|
exit(-1);
|
|
}
|
|
}
|
|
|
|
s = sparse_file_import(in, true, false);
|
|
if (!s) {
|
|
fprintf(stderr, "Failed to read sparse file\n");
|
|
exit(-1);
|
|
}
|
|
|
|
lseek(out, SEEK_SET, 0);
|
|
|
|
ret = sparse_file_write(s, out, false, false, false);
|
|
if (ret < 0) {
|
|
fprintf(stderr, "Cannot write output file\n");
|
|
exit(-1);
|
|
}
|
|
sparse_file_destroy(s);
|
|
close(in);
|
|
}
|
|
|
|
close(out);
|
|
|
|
exit(0);
|
|
}
|
|
|