NAME
rump_udf —
mount a udf image with a userspace
server
SYNOPSIS
file-system PUFFS
pseudo-device putter
rump_udf |
[options] image mountpoint |
DESCRIPTION
NOTE! This manual page describes features specific to the rump(3) file server. Please see mount_udf(8) for a full description of the available command line options.The rump_udf utility can be used to mount
udf file systems. It uses
rump(3) and p2k(3) to facilitate running the file system as a server in
userspace. As opposed to
mount_udf(8), rump_udf does not use file
system 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_udf 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_udf instead of
mount_udf(8). Corrupt file system images commonly cause the file
system to crash the entire kernel, but with rump_udf
only the userspace server process will dump core.
To use rump_udf via
mount(8), the flags -o
rump and -t
udf should be given. Similarly,
rump_udf is used instead of
mount_udf(8) if “rump” is added to the options field of
fstab(5).
SEE ALSO
HISTORY
The rump_udf utility first appeared in
NetBSD 5.0.