mirror of
https://git.openwrt.org/project/make_ext4fs.git
synced 2024-11-25 00:20:40 -05:00
90 lines
1.9 KiB
C
90 lines
1.9 KiB
C
/*
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* Copyright (C) 2010 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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#include <sparse/sparse.h>
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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/types.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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#ifndef O_BINARY
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#define O_BINARY 0
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#endif
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void usage()
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{
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fprintf(stderr, "Usage: simg2img <sparse_image_files> <raw_image_file>\n");
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}
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int main(int argc, char *argv[])
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{
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int in;
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int out;
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int i;
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int ret;
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struct sparse_file *s;
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if (argc < 3) {
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usage();
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exit(-1);
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}
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out = open(argv[argc - 1], 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", argv[argc - 1]);
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exit(-1);
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}
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for (i = 1; i < argc - 1; i++) {
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if (strcmp(argv[i], "-") == 0) {
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in = STDIN_FILENO;
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} else {
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in = open(argv[i], O_RDONLY | O_BINARY);
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if (in < 0) {
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fprintf(stderr, "Cannot open input file %s\n", argv[i]);
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exit(-1);
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}
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}
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s = sparse_file_import(in, true, false);
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if (!s) {
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fprintf(stderr, "Failed to read sparse file\n");
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exit(-1);
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}
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lseek(out, SEEK_SET, 0);
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ret = sparse_file_write(s, out, false, false, false);
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if (ret < 0) {
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fprintf(stderr, "Cannot write output file\n");
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exit(-1);
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}
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sparse_file_destroy(s);
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close(in);
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}
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close(out);
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exit(0);
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}
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