Print an error if more than one of the -p/-a, -n or -y options

[tools/e2fsprogs.git] / e2fsck / flushb.c

diff --git a/e2fsck/flushb.c b/e2fsck/flushb.c
index eba4e85..d56b41c 100644 (file)
--- a/e2fsck/flushb.c
+++ b/e2fsck/flushb.c
@@ -1,5 +1,26 @@
 /*
  * 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 a binary copy of the executable may not be
+ * packaged as a part of binary package which is distributed as part
+ * of a Linux distribution.  (Yes, this violates the Debian Free
+ * Software Guidelines of restricting its field of use.  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 at the next release.  End of
+ * Rant.  :-)
+ * 
+ * (BTW, use of flushb on some older 2.2 kernels on a heavily loaded
+ * system will corrupt filesystems.)
  */
 
 #include <stdio.h>
@@ -8,21 +29,19 @@
 #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);
 }      
        
@@ -43,9 +62,15 @@ int main(int argc, char **argv)
         * 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
 }