File Systems                                            udfs(7FS)



NAME
     udfs - universal disk format file system

DESCRIPTION
     The udfs file system is a file system type that allows  user
     access  to  files  on Universal Disk Format (UDF) disks from
     within the Solaris operating environment. Once  mounted,   a
     udfs  file  system  provides  standard  Solaris  file system
     operations and semantics. That is,  users  can  read  files,
     write  files,  and list files in a directory on a UDF device
     and applications can use standard UNIX system calls on these
     files and directories.


     Because udfs is a platform-independent file system, the same
     media  can be written to and read from by any operating sys-
     tem or vendor.

  Mounting File Systems
     udfs file systems are mounted using:

       mount-F udfs -o rw/ro device-special




     Use:

       mount /udfs




     if the /udfs and device special file  /dev/dsk/c0t6d0s0  are
     valid  and  the  following line (or similar line) appears in
     your /etc/vfstab file:

       /dev/dsk/c0t6d0s0 - /udfs udfs - no ro




     The udfs file system provides  read-only  support  for  ROM,
     RAM,   and  sequentially-recordable  media  and   read-write
     support on RAM media.


     The udfs file system also  supports  regular  files,  direc-
     tories,  and symbolic links, as well as device nodes such as
     block, character, FIFO, and Socket.





SunOS 5.11          Last change: 29 Mar 1999                    1






File Systems                                            udfs(7FS)



SEE ALSO
     mount(1M), mountudfs(1M), vfstab(4)

NOTES
     Invalid characters such as "NUL" and "/" and  invalid  file
     names  such  as "." and ".." will be translated according to
     the following rule:


     Replace the invalid character with an "," then  append  the
     file name with # followed by a 4 digit hex representation of
     the 16-bit CRC of the original FileIdentifier. For  example,
     the file name ".." will become "#4C05"










































SunOS 5.11          Last change: 29 Mar 1999                    2