udfs — universal
disk format file system
udfs file system is a file system type
that allows user access to files on Universal Disk Format (UDF) disks from
within illumos. Once mounted, a
udfs file system
provides standard 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
udfs is a platform-independent
file system, the same media can be written to and read from by any operating
system or vendor.
udfs file systems are mounted using:
mount -F udfs -o rw/ro device-special
udfsand device special file /dev/dsk/c0t6d0s0 are valid and the following line (or similar line) appears in your Pa /etc/vfstab file:
/dev/dsk/c0t6d0s0 - /udfs udfs - no ro
udfs file system provides read-only
support for ROM, RAM, and sequentially-recordable media and read-write
support on RAM media.
udfs file system also supports regular
files, directories, and symbolic links, as well as device nodes such as
block, character, FIFO, and Socket.
Invalid characters such as “\0” 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”.
|June 20, 2021||OmniOS|