89 lines
1.9 KiB
C
89 lines
1.9 KiB
C
/*
|
|
* 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 <unistd.h>
|
|
#include <stdlib.h>
|
|
|
|
#if defined(__linux__)
|
|
#include <linux/fs.h>
|
|
#elif defined(__APPLE__) && defined(__MACH__)
|
|
#include <sys/disk.h>
|
|
#endif
|
|
|
|
#ifndef USE_MINGW /* 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;
|
|
}
|