rump_ntfs(8) - NetBSD Manual Pages

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RUMP_NTFS(8)            NetBSD System Manager's Manual            RUMP_NTFS(8)


NAME

     rump_ntfs -- mount a ntfs image with a userspace server


SYNOPSIS

     file-system PUFFS
     pseudo-device putter

     rump_ntfs [options] image mountpoint


DESCRIPTION

     NOTE! This manual page describes features specific to the rump(3) file
     server.  Please see mount_ntfs(8) for a full description of the available
     command line options.

     The rump_ntfs utility can be used to mount ntfs file systems.  It uses
     rump(3) and p2k(3) to facilitate running the file system as a server in
     userspace.  As opposed to mount_ntfs(8), rump_ntfs does not use file sys-
     tem code within the kernel and therefore does not require kernel support
     except puffs(4).  Apart from a minor speed penalty there is no downside
     with respect to in-kernel code.

     rump_ntfs does not require using vnconfig(8) for mounts from regular
     files and the file path can be passed directly as the image parameter.
     In fact, the use of vnconfig(8) is discouraged, since it is unable to
     properly deal with images on sparse files.

     In case the image contains multiple partitions, the desired partition
     must be indicated by appending the token ``%DISKLABEL:p%'' to the image
     path.  The letter ``p'' specifies the partition as obtained via
     disklabel(8).  For example, to mount partition ``e'' from image
     /tmp/wd0.img, use ``/tmp/wd0.img%DISKLABEL:e%''.

     It is recommended that untrusted file system images be mounted with
     rump_ntfs instead of mount_ntfs(8).  Corrupt file system images commonly
     cause the file system to crash the entire kernel, but with rump_ntfs only
     the userspace server process will dump core.

     To use rump_ntfs via mount(8), the flags -o rump and -t ntfs should be
     given.  Similarly, rump_ntfs is used instead of mount_ntfs(8) if ``rump''
     is added to the options field of fstab(5).


SEE ALSO

     p2k(3), puffs(3), rump(3), mount_ntfs(8)


HISTORY

     The rump_ntfs utility first appeared in NetBSD 5.0.

NetBSD 9.2                     November 21, 2010                    NetBSD 9.2