/*
* flushb.c --- This routine flushes the disk buffers for a disk
+ *
+ * Copyright 1997, 2000, by Theodore Ts'o.
+ *
+ * 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 <stdio.h>
#include <stdlib.h>
#include <fcntl.h>
#include <sys/ioctl.h>
+#include <sys/mount.h>
+#include "../misc/nls-enable.h"
-#include <linux/fs.h>
-
-#ifdef __STDC__
-#define NOARGS void
-#else
-#define NOARGS
-#define const
+/* 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);
+ fprintf(stderr, _("Usage: %s disk\n"), progname);
exit(1);
}
* Note: to reread the partition table, use the ioctl
* BLKRRPART instead of BLKFSLBUF.
*/
+#ifdef BLKFLSBUF
if (ioctl(fd, BLKFLSBUF, 0) < 0) {
- perror("ioctl");
+ perror("ioctl BLKFLSBUF");
exit(1);
}
return 0;
+#else
+ fprintf(stderr,
+ _("BLKFLSBUF ioctl not supported! Can't flush buffers.\n"));
+ return 1;
+#endif
}