NAME
mount_udf —
mount an UDF file
system
SYNOPSIS
mount_udf |
[-c]
[-g gid]
[-o
options]
[-t
gmtoff]
[-s
session]
[-u uid]
special node |
DESCRIPTION
The
mount_udf command attaches the UDF file system residing on
the specified
special device node on the location
indicated with
node.
Anonymous files stored on the UDF disc will be represented and saved in the
specified uid:gid pair. If unspecified, it will default to nobody:nobody. Both
uid and gid can be either specified with their names as with their numerical
equivalents.
-
-
- -c
- Close the session after unmount creating remountable
snapshots. Closing a session also allows -ROM devices to read the disc
created. Note that this option only makes sense when mounting sequential
recordable media like CD-R and DVD*R.
-
-
- -g
gid
- Set the group of anonymous files on the file system. The
default group is the nobody group.
-
-
- -o
options
- Use the specified mount options as
specified in mount(8).
-
-
- -s
session
- Select the session session to be
mounted instead of the default last one. Implements readonly snapshots on
sequential media. Positive session values indicate
an absolute session number. Negative session values
are relative to the last session found on the disc. Note that this option
only makes sense when mounting sequential recordable media like CD-R and
DVD*R.
-
-
- -t
gmtoff
- Set the time zone offset (in seconds) from UTC to
gmtoff, with positive values indicating east of the
Prime Meridian. If not set, the user's current time zone will be
used.
-
-
- -u
uid
- Set the owner of anonymous files on the file system. The
default owner is the user nobody.
SEE ALSO
mount(2),
vnd(4),
fstab(5),
mount(8),
umount(8),
vnconfig(8)
HISTORY
A
mount_udf utility appeared in
NetBSD
4.0.
AUTHORS
Reinoud Zandijk
<
reinoud@NetBSD.org>.
NOTES
UDF is a file system defined by the OSTA standardization group and is tailored
for data interchange on optical discs (like CDs and DVDs) between different
operating systems. Its also more and more common on other media like Compact
Flash (CF) cards.
Read and write access is supported for all media types that CD/DVD type drives
can recognise including DVD-RAM. BluRay support is preliminary; read-only
access should work fine but write support is experimental.
Implemented and tested media types are CD-ROM, CD-R, CD-RW, CD-MRW, DVD-ROM,
DVD*R, DVD*RW, DVD+MRW, DVD-RAM but the same code can also read HD-DVD and
BluRay discs. Discs created and written by UDFclient, Nero's InCD, and Roxio's
DirectCD/Drag2Disc can be read without problems. Both open and closed media
are supported so there is no need to close discs or sessions.
All current UDF versions up to version 2.60 are supported.
Hard disk partitions and
vnd(4)
devices may also be mounted. Note when mounting a
vnd(4) device it might be necessary
to specify the file image sector size in the
geomspec when
creating the
vnd(4) device or the
disc sector size will be used.
BUGS
Write support for UDF version 2.50 is not completely mature and UDF version 2.01
should be used if possible; this is also the default format.
Due to lack of test media and recording devices, BluRay support and in
particular BluRay-R is still preliminary as of writing.