Description:

The devfsd programme is a daemon, run by the system boot
scripts which can provide for intelligent management of
device entries in the Device Filesystem (devfs).

As part of its setup phase devfsd creates certain symbolic
links which are compiled into the code. These links are
required by /usr/src/linux/Documentation/devices.txt. This
behaviour may change in future revisions.

devfsd will read the special control file .devfsd in a
mounted devfs, listening for the creation and removal of
device entries (this is termed a change operation). For
each change operation, devfsd can take many actions. The
daemon will normally run itself in the background and send
messages to syslog.

The opening of the syslog service is automatically delayed
until /dev/log is created.

At startup, before switching to daemon mode, devfsd will
scan the mounted device tree and will generate synthetic
REGISTER events for each leaf node.