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mount_udf(8) [netbsd man page]

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

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 cre- ated. 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) 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 prelimi- nary; 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. BSD
July 13, 2009 BSD

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dvdfs(4)						     Kernel Interfaces Manual							  dvdfs(4)

dvdfs - The Digital Versatile Disk File System [This feature is not supported in Tru64 UNIX Version 5.0] STANDARDS
Interfaces documented on this reference page conform to industry standards as follows: ISO/ITEC 13346:1995 Optical Storage Technology Association (OSTA) Universal Disk Format (UDF) Specification, "OSTA UDF Compliant Domain", Version 2.00. ISO 9660:1988 Information Processing-Volume and file structure of CD-ROM for information interchange. Refer to the standards(5) reference page for more information about industry standards and associated tags. DESCRIPTION
The Digital Versatile Disk File System enables the reading of disks formatted in the Universal Disk Format (UDF). User data sectors in a DVD-ROM can contain any type of data in any format. However, for Tru64 UNIX support through the dvdfs file system, the OSTA UDF file format standard is mandatory. The file system limit for DVDFS is int cfs_cdfs_mount_limit = 512. Additionally, DVD-ROM standards require that the logical sector size and the logical block (the user data block) size be 2048 bytes. DVD support in the UDF specification includes these levels: DVD-ROM (Read-only): Supports reading of UDF-formated files from DVD-ROM disks. DVD-R (Write-once): Supports the reading of UDF-formated files from a DVD-ROM disk and supports writing, one time, UDF-formated files onto a DVD-ROM disk. DVD-RAM (Rewritable): Supports reading and writing of UDF-formated files from and to a DVD-ROM disk. At this time, the Tru64 UNIX dvdfs file system supports only the DVD-ROM (Read-only) format. See mount(8) for information about mounting and unmounting a dvdfs file system, fstab(4) for information about including dvdfs file system in a system's /etc/fstab file, and disklabel(8) for information about labeling DVD-ROM disks. RELATED INFORMATION
Commands: disklabel(8), mount(8) Files: cdfs(4) fstab(4) delim off dvdfs(4)
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