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/*
* Copyright (C) 2014 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 <fcntl.h>
#include <libgen.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#if defined(__linux__)
#include <linux/fs.h>
#elif defined(__APPLE__) && defined(__MACH__)
#include <sys/disk.h>
#endif
#include "make_f2fs.h"
#ifndef _WIN32 /* O_BINARY is windows-specific flag */
#define O_BINARY 0
#endif
static void usage(char *path)
{
fprintf(stderr, "%s -l <len>\n", basename(path));
fprintf(stderr, " <filename>\n");
}
int main(int argc, char **argv)
{
int opt;
const char *filename = NULL;
int fd;
int exitcode;
long long len;
while ((opt = getopt(argc, argv, "l:")) != -1) {
switch (opt) {
case 'l':
len = atoll(optarg);
break;
default: /* '?' */
usage(argv[0]);
exit(EXIT_FAILURE);
}
}
if (optind >= argc) {
fprintf(stderr, "Expected filename after options\n");
usage(argv[0]);
exit(EXIT_FAILURE);
}
filename = argv[optind++];
if (optind < argc) {
fprintf(stderr, "Unexpected argument: %s\n", argv[optind]);
usage(argv[0]);
exit(EXIT_FAILURE);
}
if (strcmp(filename, "-")) {
fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, 0644);
if (fd < 0) {
perror("open");
return EXIT_FAILURE;
}
} else {
fd = STDOUT_FILENO;
}
exitcode = make_f2fs_sparse_fd(fd, len, NULL, NULL);
close(fd);
if (exitcode && strcmp(filename, "-"))
unlink(filename);
return exitcode;
}
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