* flushb.c --- This routine flushes the disk buffers for a disk
*
* Copyright 1997, 2000, by Theodore Ts'o.
- *
- * This program may be used under the provisions of the GNU Public
- * License, *EXCEPT* that it may not be included in the Debian
- * distribution. (Yes, this violates the Debian Free Software
- * Guidelines. That's the point. I don't want this program being
- * distributed in Debian, because I don't care to support it, and the
- * maintainer, Yann Dirson, doesn't seem to pay attention to my wishes
- * on this matter. So I'm deliberately adding this clause so it
- * violates the Debian Free Software Guidelines to force him to take
- * it out. (What part of THIS IS FOR MY OWN USE don't you understand?
- * And no, I'm going to write a man page for it either. And don't
- * file a bug about it or bug me about it.) If this doesn't work,
- * I'll have to remove it from the upstream source distribution on the
- * next release. So there. :-)
+ *
+ * WARNING: use of flushb on some older 2.2 kernels on a heavily loaded
+ * system will corrupt filesystems. This program is not really useful
+ * beyond for benchmarking scripts.
+ *
+ * %Begin-Header%
+ * This file may be redistributed under the terms of the GNU Public
+ * License.
+ * %End-Header%
*/
+#include "config.h"
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <stdlib.h>
#include <fcntl.h>
#include <sys/ioctl.h>
+#include <sys/mount.h>
#include "../misc/nls-enable.h"
-#ifdef __STDC__
-#define NOARGS void
-#else
-#define NOARGS
-#define const
-#endif
-
-/* For Linux/i386, define BLKFLSBUF */
-#if (!defined(BLKFLSBUF) && defined(__i386__))
-#define BLKFLSBUF 0x1261 /* flush buffer cache */
+/* For Linux, define BLKFLSBUF if necessary */
+#if (!defined(BLKFLSBUF) && defined(__linux__))
+#define BLKFLSBUF _IO(0x12,97) /* flush buffer cache */
#endif
const char *progname;
-static void usage(NOARGS)
+static void usage(void)
{
fprintf(stderr, _("Usage: %s disk\n"), progname);
exit(1);
-}
-
+}
+
int main(int argc, char **argv)
{
int fd;
-
+
progname = argv[0];
if (argc != 2)
usage();