/*
 * newfs -F -s 10000 ffs.img
 * gcc -lrumpvfs -lrump -lrumpfs_ffs -lrumpuser -lrumpdev_disk -lrumpdev -pthread rump.c -g -O0
 * 
 * $ RUMP_NCPU=2 RUMP_VERBOSE=1 ./a.out   
[   1.0000000] Copyright (c) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
[   1.0000000]     2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017,
[   1.0000000]     2018, 2019 The NetBSD Foundation, Inc.  All rights reserved.
[   1.0000000] Copyright (c) 1982, 1986, 1989, 1991, 1993
[   1.0000000]     The Regents of the University of California.  All rights reserved.

[   1.0000000] NetBSD 8.99.42 (RUMP-ROAST)
[   1.0000000] total memory = unlimited (host limit)
[   1.0000000] timecounter: Timecounters tick every 10.000 msec
[   1.0000080] timecounter: Timecounter "clockinterrupt" frequency 100 Hz quality 0
[   1.0000090] cpu0 at thinair0: rump virtual cpu
[   1.0000090] cpu1 at thinair0: rump virtual cpu
[   1.0000090] root file system type: rumpfs
[   1.0000090] kern.module.path=/stand/amd64/8.99.42/modules
[   1.0000090] mainbus0 (root)
[   1.0200090] /devdisk: hostpath ffs.img (5000 KB)
[   1.0200090] /devdisk: file system not clean (fs_clean=0x80); please fsck(8)
[   1.0200090] /devdisk: lost blocks 0 files 0
OK
 */

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

#include <ufs/ufs/ufsmount.h>

#include <rump/rump.h>
#include <rump/rump_syscalls.h>

#include <err.h>
#include <errno.h>
#include <stdio.h>

int
main(int argc, char **argv)
{
	if (rump_init() != 0)
		errx(1, "rump_init");

        if (rump_pub_etfs_register("/devdisk", "ffs.img", RUMP_ETFS_BLK))
                err(1, "rump_pub_etfs_register");

	struct ufs_args args;
	args.fspec = __UNCONST("/devdisk");
	if (rump_sys_mkdir("/mp", 0777) == -1)
		err(1, "rump_sys_mkdir");

	errno = 0;
	if (rump_sys_mount(MOUNT_FFS, "/mp", 0, &args, sizeof(args)) == -1)
		err(1, "rump_sys_mount");

	if (rump_sys_unmount("/mp", 0) == -1)
		err(1, "rump_sys_umount");

	printf("OK\n");
	return 0;
}