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NetBSD 6.1.5 - man page for rump_udf (netbsd section 8)

RUMP_UDF(8)			   BSD System Manager's Manual			      RUMP_UDF(8)

     rump_udf -- mount a udf image with a userspace server

     file-system PUFFS
     pseudo-device putter

     rump_udf [options] image mountpoint

     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 ker-
     nel 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 discour-
     aged, 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

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

     The rump_udf utility first appeared in NetBSD 5.0.

BSD					November 21, 2010				      BSD

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