blob: d9937355f78f1ac1acfffacc75f5d368d3188486 [file] [log] [blame]
Erik Andersene49d5ec2000-02-08 19:58:47 +00001/* vi: set sw=4 ts=4: */
Eric Andersenf6be9441999-10-13 21:12:06 +00002/*
3 * Mini fdflush implementation for busybox
4 *
Eric Andersenc4996011999-10-20 22:08:37 +00005 *
6 * Copyright (C) 1995, 1996 by Bruce Perens <bruce@pixar.com>.
Eric Andersenf6be9441999-10-13 21:12:06 +00007 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 *
22 */
23
Eric Andersencc8ed391999-10-05 16:24:54 +000024#include "internal.h"
Eric Andersenf6be9441999-10-13 21:12:06 +000025#include <stdio.h>
Eric Andersencc8ed391999-10-05 16:24:54 +000026#include <sys/ioctl.h>
Eric Andersencc8ed391999-10-05 16:24:54 +000027#include <fcntl.h>
28
Eric Andersenbd22ed82000-07-08 18:55:24 +000029/* From <linux/fd.h> */
30#define FDFLUSH _IO(2,0x4b)
Eric Andersencc8ed391999-10-05 16:24:54 +000031
Eric Andersenf6be9441999-10-13 21:12:06 +000032extern int fdflush_main(int argc, char **argv)
Eric Andersencc8ed391999-10-05 16:24:54 +000033{
Erik Andersene49d5ec2000-02-08 19:58:47 +000034 int value;
35 int fd;
Eric Andersencc8ed391999-10-05 16:24:54 +000036
Erik Andersen9cf3bfa2000-04-13 18:49:43 +000037 if (argc <= 1 || **(++argv) == '-') {
Erik Andersen7ab9c7e2000-05-12 19:41:47 +000038 usage("fdflush DEVICE\n"
39#ifndef BB_FEATURE_TRIVIAL_HELP
40 "\nForces floppy disk drive to detect disk change\n"
41#endif
42 );
Erik Andersene49d5ec2000-02-08 19:58:47 +000043 }
Eric Andersencc8ed391999-10-05 16:24:54 +000044
Erik Andersene49d5ec2000-02-08 19:58:47 +000045 fd = open(*argv, 0);
46 if (fd < 0) {
47 perror(*argv);
48 exit(FALSE);
49 }
Eric Andersencc8ed391999-10-05 16:24:54 +000050
Erik Andersene49d5ec2000-02-08 19:58:47 +000051 value = ioctl(fd, FDFLUSH, 0);
Erik Andersen298854f2000-03-23 01:09:18 +000052 /* Don't bother closing. Exit does
53 * that, so we can save a few bytes */
54 /* close(fd); */
Erik Andersene49d5ec2000-02-08 19:58:47 +000055
56 if (value) {
57 perror(*argv);
58 exit(FALSE);
59 }
Eric Andersenb6106152000-06-19 17:25:40 +000060 return(TRUE);
Eric Andersencc8ed391999-10-05 16:24:54 +000061}