69 lines
1.6 KiB
C
69 lines
1.6 KiB
C
/* vi: set sw=4 ts=4: */
|
|
/*
|
|
* freeramdisk implementation for busybox
|
|
*
|
|
* Copyright (C) 2000 and written by Emanuele Caratti <wiz@iol.it>
|
|
* Adjusted a bit by Erik Andersen <andersee@debian.org>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <sys/types.h>
|
|
#include <fcntl.h>
|
|
#include <sys/ioctl.h>
|
|
#include <stdlib.h>
|
|
#include "busybox.h"
|
|
|
|
|
|
/* From linux/fs.h */
|
|
#define BLKFLSBUF _IO(0x12,97) /* flush buffer cache */
|
|
|
|
extern int
|
|
freeramdisk_main(int argc, char **argv)
|
|
{
|
|
int result;
|
|
int fd;
|
|
|
|
if (argc != 2) {
|
|
bb_show_usage();
|
|
}
|
|
|
|
fd = bb_xopen(argv[1], O_RDWR);
|
|
|
|
result = ioctl(fd, BLKFLSBUF);
|
|
#ifdef CONFIG_FEATURE_CLEAN_UP
|
|
close(fd);
|
|
#endif
|
|
if (result < 0) {
|
|
bb_perror_msg_and_die("failed ioctl on %s", argv[1]);
|
|
}
|
|
|
|
/* Don't bother closing. Exit does
|
|
* that, so we can save a few bytes */
|
|
return EXIT_SUCCESS;
|
|
}
|
|
|
|
/*
|
|
Local Variables:
|
|
c-file-style: "linux"
|
|
c-basic-offset: 4
|
|
tab-width: 4
|
|
End:
|
|
*/
|
|
|