/*      $NetBSD: rump_tmpfs.c,v 1.4 2009/12/17 14:06:38 pooka Exp $     */

/*
* Copyright (c) 2008 Antti Kantee.  All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/

#include <sys/types.h>
#include <sys/mount.h>

#include <fs/tmpfs/tmpfs_args.h>

#include <err.h>
#include <puffs.h>
#include <stdlib.h>
#include <unistd.h>

#include <rump/p2k.h>

#include "mount_tmpfs.h"

/*
* tmpfs has a slight "issue" with file content storage.  Since it
* stores data in memory, we will end up using 2x the RAM for
* storage if we cache in puffs vfs.  If we don't, we need to take
* the slow path from the kernel to the file server every time the
* file is accessed.  It's either suck or suck.  However, rump_tmpfs
* will not be used in real life, so this is hardly a release-stopping
* issue of catastrophic proportions.  For now we opt for un-double
* storage (PUFFS_KFLAG_NOCACHE_PAGE).
*/

int
main(int argc, char *argv[])
{
       struct tmpfs_args args;
       char canon_dev[MAXPATHLEN], canon_dir[MAXPATHLEN];
       int mntflags;
       int rv;

       setprogname(argv[0]);

       mount_tmpfs_parseargs(argc, argv, &args, &mntflags,
           canon_dev, canon_dir);
       rv = p2k_run_fs(MOUNT_TMPFS, canon_dev, canon_dir, mntflags,
               &args, sizeof(args), PUFFS_KFLAG_NOCACHE_PAGE);
       if (rv)
               err(1, "mount");

       return 0;
}