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-rw-r--r--busybox/util-linux/fdflush.c54
1 files changed, 54 insertions, 0 deletions
diff --git a/busybox/util-linux/fdflush.c b/busybox/util-linux/fdflush.c
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1/* vi: set sw=4 ts=4: */
2/*
3 * Mini fdflush implementation for busybox
4 *
5 * Copyright (C) 1995, 1996 by Bruce Perens <bruce@perens.com>.
6 * Copyright (C) 2003 by Erik Andersen <andersen@codeoet.org>
7 *
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
24#include <stdio.h>
25#include <sys/ioctl.h>
26#include <fcntl.h>
27#include <stdlib.h>
28#include <unistd.h>
29#include "busybox.h"
30
31/* From <linux/fd.h> */
32#define FDFLUSH _IO(2,0x4b)
33
34extern int fdflush_main(int argc, char **argv)
35{
36 int fd, result;
37
38 if (argc <= 1)
39 bb_show_usage();
40
41 fd = bb_xopen(argv[1], 0);
42
43 result = ioctl(fd, FDFLUSH, 0);
44#ifdef CONFIG_FEATURE_CLEAN_UP
45 close(fd);
46#endif
47 if (result) {
48 bb_perror_nomsg_and_die();
49 }
50
51 /* Don't bother closing. Exit does
52 * that, so we can save a few bytes */
53 return EXIT_SUCCESS;
54}