Pseudo File Systems

The TFS pseudo file system is not included in the SunOS release 5.7 software.

The added pseudo file systems are:

• The CACHEFS pseudo file system can be used to improve performance of slow devices such as CD-ROM.

• The PROCFS pseudo file system resides in memory and contains a list of active processes, by process number, in the /proc directory. See the proc(4) man page.

• The FDFS pseudo file system provides explicit names for opening files using file descriptors.

• The FIFOFS pseudo file system contains pipe files that give processes common access to data.

• The NAMEFS pseudo file system is used mostly by STREAMS for dynamic mounts of file descriptors on top of files.

• The SWAPFS pseudo file system is the default swap device when the system boots or you create additional swap space.