example devfs config file, patch from Tito.
diff --git a/examples/devfsd.conf b/examples/devfsd.conf
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+# Sample /etc/devfsd.conf configuration file.
+# Richard Gooch <rgooch@atnf.csiro.au> 17-FEB-2002
+#
+# adapted for busybox devfsd implementation by Tito <farmatito@tiscali.it>
+#
+# Enable full compatibility mode for old device names. You may comment these
+# out if you don't use the old device names. Make sure you know what you're
+# doing!
+REGISTER .* MKOLDCOMPAT
+UNREGISTER .* RMOLDCOMPAT
+
+# You may comment out the above and uncomment the following if you've
+# configured your system to use the original "new" devfs names or the really
+# new names
+#REGISTER ^vc/ MKOLDCOMPAT
+#UNREGISTER ^vc/ RMOLDCOMPAT
+#REGISTER ^pty/ MKOLDCOMPAT
+#UNREGISTER ^pty/ RMOLDCOMPAT
+#REGISTER ^misc/ MKOLDCOMPAT
+#UNREGISTER ^misc/ RMOLDCOMPAT
+
+# You may comment these out if you don't use the original "new" names
+REGISTER .* MKNEWCOMPAT
+UNREGISTER .* RMNEWCOMPAT
+
+# Enable module autoloading. You may comment this out if you don't use
+# autoloading
+# Not supported by busybox
+#LOOKUP .* MODLOAD
+# Maybe one of these works for busybox
+#LOOKUP .* EXECUTE /sbin/modprobe -k -v -C /etc/modules.devfs *
+#REGISTER .* EXECUTE /sbin/modprobe -k -v -C /etc/modules.devfs *
+
+# Uncomment the following if you want to set the group to "tty" for the
+# pseudo-tty devices. This is necessary so that mesg(1) can later be used to
+# enable/disable talk requests and wall(1) messages.
+REGISTER ^pty/s.* PERMISSIONS -1.tty 0600
+#REGISTER ^pts/.* PERMISSIONS -1.tty 0600
+
+# Restoring /dev/log on startup would trigger the minilogd/initlog deadlock
+# (minilogd falsely assuming syslogd has been started).
+REGISTER ^log$ IGNORE
+CREATE ^log$ IGNORE
+CHANGE ^log$ IGNORE
+DELETE ^log$ IGNORE
+
+#
+# Uncomment this if you want permissions to be saved and restored
+# Do not do this for pseudo-terminal devices
+REGISTER ^pt[sy] IGNORE
+CREATE ^pt[sy] IGNORE
+CHANGE ^pt[sy] IGNORE
+DELETE ^pt[sy] IGNORE
+REGISTER .* COPY /lib/dev-state/$devname $devpath
+CREATE .* COPY $devpath /lib/dev-state/$devname
+CHANGE .* COPY $devpath /lib/dev-state/$devname
+#DELETE .* CFUNCTION GLOBAL unlink /lib/dev-state/$devname
+# Busybox
+DELETE .* EXECUTE /bin/rm -f /lib/dev-state/$devname
+
+RESTORE /lib/dev-state
+
+#
+# Uncomment this if you want the old /dev/cdrom symlink
+#REGISTER ^cdroms/cdrom0$ CFUNCTION GLOBAL mksymlink $devname cdrom
+#UNREGISTER ^cdroms/cdrom0$ CFUNCTION GLOBAL unlink cdrom
+# busybox
+REGISTER ^cdroms/cdrom0$ EXECUTE /bin/ln -sf $devname cdrom
+UNREGISTER ^cdroms/cdrom0$ EXECUTE /bin/rm -f cdrom
+
+
+#REGISTER ^v4l/video0$ CFUNCTION GLOBAL mksymlink v4l/video0 video
+#UNREGISTER ^v4l/video0$ CFUNCTION GLOBAL unlink video
+#REGISTER ^radio0$ CFUNCTION GLOBAL mksymlink radio0 radio
+#UNREGISTER ^radio0$ CFUNCTION GLOBAL unlink radio
+# Busybox
+REGISTER ^v4l/video0$ EXECUTE /bin/ln -sf v4l/video0 video
+UNREGISTER ^v4l/video0$ EXECUTE /bin/rm -f video
+REGISTER ^radio0$ EXECUTE /bin/ln -sf radio0 radio
+UNREGISTER ^radio0$ EXECUTE /bin/rm -f radio
+
+# ALSA stuff
+# Not supported by busybox
+#LOOKUP snd MODLOAD ACTION snd
+# Maybe this works for busybox
+#LOOKUP snd EXECUTE /sbin/modprobe -k -v -C /etc/modules.devfs snd
+
+# Uncomment this to let PAM manage devfs
+#REGISTER .* CFUNCTION /lib/security/pam_console_apply_devfsd.so pam_console_apply_single $devpath
+
+# Uncomment this to manage USB mouse
+#REGISTER ^input/mouse0$ CFUNCTION GLOBAL mksymlink $devname usbmouse
+#UNREGISTER ^input/mouse0$ CFUNCTION GLOBAL unlink usbmouse
+# Busybox
+REGISTER ^input/mice$ EXECUTE /bin/ln -sf $devname usbmouse
+UNREGISTER ^input/mice$ EXECUTE /bin/rm -f usbmouse
+
+# If you have removable media and want to force media revalidation when looking
+# up new or old compatibility names, uncomment the following lines
+# SCSI NEWCOMPAT /dev/sd/* names
+LOOKUP ^(sd/c[0-9]+b[0-9]+t[0-9]+u[0-9]+)p[0-9]+$ EXECUTE /bin/dd if=$mntpnt/\1 of=/dev/null count=1
+# SCSI OLDCOMPAT /dev/sd?? names
+LOOKUP ^(sd[a-z]+)[0-9]+$ EXECUTE /bin/dd if=$mntpnt/\1 of=/dev/null count=1
+# IDE NEWCOMPAT /dev/ide/hd/* names
+LOOKUP ^(ide/hd/c[0-9]+b[0-9]+t[0-9]+u[0-9]+)p[0-9]+$ EXECUTE /bin/dd if=$mntpnt/\1 of=/dev/null count=1
+# IDE OLDCOMPAT /dev/hd?? names
+LOOKUP ^(hd[a-z])[0-9]+$ EXECUTE /bin/dd if=$mntpnt/\1 of=/dev/null count=1
+# IDE-SCSI NEWCOMPAT /dev/sd/* names
+#LOOKUP ^(sd/c[0-9]+b[0-9]+t[0-9]+u[0-9]+)p[0-9]+$ EXECUTE /bin/dd if=$mntpnt/\1 of=/dev/null count=1
+# SCSI OLDCOMPAT /dev/scd? names
+LOOKUP ^(scd+)[0-9]+$ EXECUTE /bin/dd if=$mntpnt/\1 of=/dev/null count=1
+
+
+REGISTER ^dvb/card[0-9]+/[^/]+$ PERMISSIONS root.video 0660
+# Busybox
+#REGISTER ^dvb/card([0-9]+)/([^/0-9]*)[0-9]+$ CFUNCTION GLOBAL mksymlink /dev/$devname ost/\2\1
+#UNREGISTER ^dvb/card([0-9]+)/([^/0-9]*)[0-9]+$ CFUNCTION GLOBAL unlink ost/\2\1
+REGISTER ^dvb/card([0-9]+)/([^/0-9]*)[0-9]+$ EXECUTE /bin/ln -sf /dev/$devname ost/\2\1
+UNREGISTER ^dvb/card([0-9]+)/([^/0-9]*)[0-9]+$ EXECUTE /bin/rm -f ost/\2\1
+
+# Include package-generated files from /etc/devfs/conf.d
+# Supported by busybox
+#OPTIONAL_INCLUDE /etc/devfs/conf.d/dvd.conf
+#INCLUDE /etc/devfs/conf.d/dvd.conf
+#OPTIONAL_INCLUDE /etc/devfs/conf.d/
+#INCLUDE /etc/devfs/conf.d/
+
+#/etc/devfs/conf.d/dvd.conf
+#REGISTER ^ide/host0/bus1/target1/lun0/cd$ CFUNCTION GLOBAL mksymlink ide/host0/bus1/target1/lun0/cd dvd
+#UNREGISTER ^ide/host0/bus1/target1/lun0/cd$ CFUNCTION GLOBAL unlink dvd
+REGISTER ^ide/host0/bus1/target1/lun0/cd$ EXECUTE ln -sf ide/host0/bus1/target1/lun0/cd dvd
+UNREGISTER ^ide/host0/bus1/target1/lun0/cd$ EXECUTE rm -f dvd
+
+#/etc/devfs/conf.d/dynamic.conf
+# dynamic desktop and co
+
+REGISTER .*/part.* EXECUTE /etc/dynamic/scripts/part.script add $devpath
+UNREGISTER .*/part.* EXECUTE /etc/dynamic/scripts/part.script del $devpath
+
+REGISTER v4l/video.* EXECUTE /etc/dynamic/scripts/webcam.script add $devpath
+UNREGISTER v4l/video.* EXECUTE /etc/dynamic/scripts/webcam.script del $devpath
+
+REGISTER usb/scanner.* EXECUTE /etc/dynamic/scripts/scanner.script add $devpath
+UNREGISTER usb/scanner.* EXECUTE /etc/dynamic/scripts/scanner.script del $devpath
+
+REGISTER usb/rio500 EXECUTE /etc/dynamic/scripts/rio500.script add $devpath
+UNREGISTER usb/rio500 EXECUTE /etc/dynamic/scripts/rio500.script del $devpath
+
+REGISTER usb/tts/[13579] EXECUTE /etc/dynamic/scripts/visor.script add $devpath
+UNREGISTER usb/tts/[13579] EXECUTE /etc/dynamic/scripts/visor.script del $devpath
+
+REGISTER (usb/lp.*|printers/.*) EXECUTE /etc/dynamic/scripts/lp.script add $devpath
+UNREGISTER (usb/lp.*|printers/.*) EXECUTE /etc/dynamic/scripts/lp.script del $devpath
+
+#/etc/devfs/conf.d/modem.conf
+#REGISTER ^$ CFUNCTION GLOBAL mksymlink modem
+#UNREGISTER ^$ CFUNCTION GLOBAL unlink modem
+REGISTER ^tts/0$ EXECUTE ln -sf $devname modem
+UNREGISTER ^$ EXECUTE rm -f modem
+
+#/etc/devfs/conf.d/mouse.conf
+#REGISTER ^misc/psaux$ CFUNCTION GLOBAL mksymlink misc/psaux mouse
+#UNREGISTER ^misc/psaux$ CFUNCTION GLOBAL unlink mouse
+REGISTER ^misc/psaux$ EXECUTE ln -sf misc/psaux mouse
+UNREGISTER ^misc/psaux$ EXECUTE rm -f mouse
+
+#/etc/devfs/conf.d/psaux.conf
+#REGISTER ^misc/psaux$ CFUNCTION GLOBAL mksymlink misc/psaux psaux
+#UNREGISTER ^misc/psaux$ CFUNCTION GLOBAL unlink psaux
+REGISTER ^misc/psaux$ EXECUTE ln -sf misc/psaux psaux
+UNREGISTER ^misc/psaux$ EXECUTE rm -f psaux
+
+#/etc/devfs/conf.d/rdvd.conf
+REGISTER ^ide/host0/bus1/target1/lun0/cd$ EXECUTE /etc/dynamic/scripts/rawdevice.script add /dev/ide/host0/bus1/target1/lun0/cd /dev/rdvd
+UNREGISTER ^ide/host0/bus1/target1/lun0/cd$ EXECUTE /etc/dynamic/scripts/rawdevice.script del /dev/rdvd
+
+#/etc/devfs/conf.d/ttyS0.conf
+#REGISTER ^tts/0$ CFUNCTION GLOBAL mksymlink tts/0 ttyS0
+#UNREGISTER ^tts/0$ CFUNCTION GLOBAL unlink ttyS0
+REGISTER ^tts/0$ EXECUTE ln -sf $devname ttyS0
+UNREGISTER ^tts/0$ EXECUTE rm -f ttyS0