NetBSD/sbin/mount_ntfs/mount_ntfs.8

.\" $NetBSD: mount_ntfs.8,v 1.11 2002/10/01 13:40:41 wiz Exp $
.\"
.\" Copyright (c) 1993,1994 Christopher G. Demetriou
.\" Copyright (c) 1999 Semen Ustimenko
.\" 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.
.\" 3. All advertising materials mentioning features or use of this software
.\"    must display the following acknowledgment:
.\"      This product includes software developed by Christopher G. Demetriou.
.\" 3. The name of the author may not be used to endorse or promote products
.\"    derived from this software without specific prior written permission
.\"
.\" 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 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.
.\"
.\"	Id: mount_ntfs.8,v 1.3 1999/05/04 11:34:33 jkoshy Exp
.\"
.Dd October 31, 2001
.Dt MOUNT_NTFS 8
.Os
.Sh NAME
.Nm mount_ntfs
.Nd mount an NTFS file system
.Sh SYNOPSIS
.Nm mount_ntfs
.Op Fl a
.Op Fl i
.Op Fl u Ar uid
.Op Fl g Ar gid
.Op Fl m Ar mask
.Pa special
.Pa node
.Sh DESCRIPTION
The
.Nm
command attaches the NTFS filesystem residing on the device
.Pa special
to the global filesystem namespace at the location
indicated by
.Pa node .
This command is normally executed by
.Xr mount 8
at boot time, but can be used by any user to mount an
NTFS file system on any directory that they own (provided,
of course, that they have appropriate access to the device that
contains the file system).
.Pp
The supported NTFS versions include both NTFS4, as used by Microsoft
Windows NT 4.0, and NTFS5, as used by Microsoft Windows 2000 and XP.
.Pp
The options are as follows:
.Bl -tag -width Ds
.It Fl a
Force behaviour to return MS-DOS 8.3 names also on
.Fn readdir .
.It Fl i
Make name lookup case insensitive for all names except POSIX names.
.It Fl u Ar uid
Set the owner of the files in the file system to
.Ar uid .
The default owner is the owner of the directory
on which the file system is being mounted.
.It Fl g Ar gid
Set the group of the files in the file system to
.Ar gid .
The default group is the group of the directory
on which the file system is being mounted.
.It Fl m Ar mask
Specify the maximum file permissions for files
in the file system.
.El
.Sh FEATURES
.Ss NTFS file attributes
NTFS file attributes can be accessed in following way:
.Bd -literal -offset indent
foo[[:ATTRTYPE]:ATTRNAME]
.Ed
.Pp
.Sq ATTRTYPE
is one of identifier listed in $AttrDef file of volume.
Default is $DATA.
.Sq ATTRNAME
is an attribute name.
Default is none.
.Pp
.Sy Examples :
.Pp
To get volume name (in Unicode):
.Bd -literal -offset indent
# cat /mnt/\\$Volume:\\$VOLUME_NAME
.Ed
.Pp
To read directory raw data:
.Bd -literal -offset indent
# cat /mnt/foodir:\\$INDEX_ROOT:\\$I30
.Ed
.Ss Limited support for writing
There is limited writing ability for files.
Limitations:
.Bl -bullet -compact
.It
file must be nonresident
.It
file must
.Em not
contain any holes (uninitialized areas)
.It
file can't be compressed
.El
.Pp
Note that that it's not currently possible to create or remove files
on NTFS filesystem.
.Pp
.Sy Warning :
do not mount NTFS filesystems read-write.
The write support is not very useful and is not tested well.
It's not safe to write to any file on NTFS, you might damage the filesystem.
Unless you want to debug NTFS filesystem code, mount the NTFS filesystem
read-only.
.Sh SEE ALSO
.Xr mount 2 ,
.Xr unmount 2 ,
.Xr fstab 5 ,
.Xr disklabel 8 ,
.Xr mbrlabel 8 ,
.Xr mount 8
.Sh HISTORY
Support for NTFS first appeared in
.Fx 3.0 .
It has been ported to
.Nx
and first appeared in
.Nx 1.5 .
.Sh AUTHORS
NTFS kernel implementation,
.Nm
and this manual were originally written by
.An Semen Ustimenko Aq semenu@FreeBSD.org .
.Pp
The
.Nx
port was done by
.An Christos Zoulas Aq christos@NetBSD.org
and
.An Jaromir Dolecek Aq jdolecek@NetBSD.org .
.Sh BUGS
The write support should be enhanced to actually be able change
file size, and to create and remove files and directories.
It's not very useful right now.
.Pp
If the attempt to mount NTFS gives you error like this:
.Bd -literal
# mount -t ntfs /dev/wd0k /mnt
mount_ntfs: /dev/wd0k on /mnt: Invalid argument
.Ed
.Pp
make sure that appropriate partition has correct entry in the
disk label, particularily that the partition offset is correct.
If the NTFS partition is the first partition on the fisk, the
offset should be '63' on i386 (see
.Xr disklabel 8 ) .
.Xr mbrlabel 8
could help you to setup the disk label correctly.
.Pp
If you mark the NTFS partition as
.Ql dynamic
under Microsoft Windows XP,
it won't be possible to access it under
.Nx
anymore.