*** Use the README instead, this file is outdated. ***



README for udev


   TITLE: Replace devfs with udev
   CRUX VERSION: 1.3+
   AUTHOR: CRUX ML members
   CATEGORY: filesystem
   SYNOPSIS: What to do to get udev running

   HINT:
     * install hotplug and udev ports (and optionally coldplug)
       (and their dependencies) from CLC

     * Kernel config:
          * disable devfs support
          * enable hotplug support
          * enable tmpfs support

     * (optional) add coldplug to the SERVICES array in /etc/rc.conf

     * make the following changes in /etc/rc & /etc/rc.single:

       (remember that "-" means the line gets removed,
       and "+" means the lines gets added.  ;-))

          * /etc/rc diff:

        - # Start device management daemon
        - /sbin/devfsd /dev

        + # Start udev
        + /bin/mount -t sysfs none /sys
        + /bin/mount -t proc none /proc
        + /sbin/start_udev

          *** NOTE ***
          Han Boetes suggests this as a better way to mount the sysfs
          and proc filesystems to avoid problems with improperly unmounted
          filesystems being unfixable when their devices are missing due
          to a failed udev start:

          if ! /bin/mount -t sysfs none /sys; then
             /bin/mount -n -t sysfs none /sys
          fi
          if ! /bin/mount -t proc none /proc; then
             /bin/mount -n -t proc none /proc
          fi
          ************

          * /etc/rc.single diff:

        - # Start device management daemon
        - /sbin/devfsd /dev

        + # Start udev
        + /bin/mount -t sysfs none /sys
        + /bin/mount -t proc none /proc
        + /sbin/start_udev

          *** see NOTE above ***

     * comment or remove the following fstab entries:

        sysfs /sys sysfs defaults 0 0
        proc /proc proc defaults 0 0

     * add the additional fstab entries (if needed):
       (these are in the default fstab, commented)

        none /proc/bus/usb usbfs defaults 0 0
        none /dev/pts devpts defaults 0 0

     * reboot and cross fingers
     _________________________________________________________________

     If you want to allow users to access the sound and video devices
     (nvidia, dri, etc.), add an 'audio' group and a 'video' group to
     the system. CRUX's udev install sets the appropriate group
     permissions, so just add the user to the 'audio' and 'video'
     groups (and log out/back in).

     _________________________________________________________________