mirror of
https://github.com/sheumann/hush.git
synced 2024-12-27 16:31:24 +00:00
70 lines
1.7 KiB
C
70 lines
1.7 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/mount.h>
|
|
#include <sys/types.h>
|
|
#include <sys/stat.h>
|
|
#include <fcntl.h>
|
|
#include <sys/ioctl.h>
|
|
#include <errno.h>
|
|
#include "internal.h"
|
|
|
|
|
|
static const char freeramdisk_usage[] =
|
|
"freeramdisk DEVICE\n\n"
|
|
"Frees all memory used by the specified ramdisk.\n";
|
|
|
|
extern int
|
|
freeramdisk_main(int argc, char **argv)
|
|
{
|
|
char rname[256] = "/dev/ram";
|
|
int f;
|
|
|
|
if (argc > 2 || ( argv[1] && *argv[1] == '-')) {
|
|
usage(freeramdisk_usage);
|
|
}
|
|
|
|
if (argc >1)
|
|
strcpy(rname, argv[1]);
|
|
|
|
if ((f = open(rname, O_RDWR)) == -1) {
|
|
fatalError( "freeramdisk: cannot open %s: %s", rname, strerror(errno));
|
|
}
|
|
if (ioctl(f, BLKFLSBUF) < 0) {
|
|
fatalError( "freeramdisk: failed ioctl on %s: %s", rname, strerror(errno));
|
|
}
|
|
close(f);
|
|
exit(TRUE);
|
|
}
|
|
|
|
/*
|
|
Local Variables:
|
|
c-file-style: "linux"
|
|
c-basic-offset: 4
|
|
tab-width: 4
|
|
End:
|
|
*/
|
|
|