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/*
* flushb.c --- This routine flushes the disk buffers for a disk
*/
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <stdlib.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#ifdef HAVE_LINUX_FS_H
#include <linux/fs.h>
#endif
#ifdef __STDC__
#define NOARGS void
#else
#define NOARGS
#define const
#endif
const char *progname;
static void usage(NOARGS)
{
fprintf(stderr, "Usage: %s disk\n", progname);
exit(1);
}
int main(int argc, char **argv)
{
int fd;
progname = argv[0];
if (argc != 2)
usage();
fd = open(argv[1], O_RDONLY, 0);
if (fd < 0) {
perror("open");
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 BLKFLSBUF");
exit(1);
}
return 0;
#else
fprintf(stderr,
"BLKFLSBUF ioctl not supported! Can't flush buffers.\n");
return 1;
#endif
}
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