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+#!/bin/sh
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+#
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+# udev This is a minimal non-LSB version of a UDEV startup script. It
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+# was derived by stripping down the udev-058 LSB version for use
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+# with buildroot on embedded hardware using Linux 2.6.12+ kernels.
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+#
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+# You may need to customize this for your system's resource limits
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+# (including startup time!) and administration. For example, if
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+# your early userspace has a custom initramfs or initrd you might
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+# need /dev much earlier; or without hotpluggable busses (like USB,
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+# PCMCIA, MMC/SD, and so on) your /dev might be static after boot.
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+#
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+# This script assumes your system boots right into the eventual root
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+# filesystem, and that init runs this udev script before any programs
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+# needing more device nodes than the bare-bones set -- /dev/console,
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+# /dev/zero, /dev/null -- that's needed to boot and run this script.
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+#
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+
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+# old kernels don't use udev
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+case $(uname -r) in
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+2.6*|2.7*) ;;
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+*) exit 0;;
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+esac
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+
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+# Check for missing binaries
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+UDEV_BIN=/sbin/udev
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+test -x $UDEV_BIN || exit 5
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+UDEVSTART_BIN=/sbin/udevstart
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+test -x $UDEVSTART_BIN || exit 5
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+
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+# Check for config file and read it
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+UDEV_CONFIG=/etc/udev/udev.conf
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+test -r $UDEV_CONFIG || exit 6
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+. $UDEV_CONFIG
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+
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+# Directory where sysfs is mounted
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+SYSFS_DIR=/sys
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+
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+case "$1" in
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+ start)
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+ # mount sysfs if it's not yet mounted
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+ if [ ! -d $SYSFS_DIR ]; then
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+ echo "${0}: SYSFS_DIR \"$SYSFS_DIR\" not found"
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+ exit 1
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+ fi
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+ grep -q "^sysfs $SYSFS_DIR" /proc/mounts ||
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+ mount -t sysfs /sys /sys ||
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+ exit 1
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+
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+ # mount $udev_root as ramfs if it's not yet mounted
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+ # we know 2.6 kernels always support ramfs
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+ if [ ! -d $udev_root ]; then
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+ echo "${0}: udev_root \"$udev_root\" not found"
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+ exit 1
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+ fi
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+ grep -q "^udev $udev_root" /proc/mounts ||
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+ mount -t ramfs udev $udev_root ||
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+ exit 1
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+
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+ # heck, go whole-hog: use only new style hotplug
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+ # echo $UDEV_BIN > /proc/sys/kernel/hotplug
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+
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+ # populate /dev (normally)
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+ echo -n "Populating $udev_root using udev... "
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+ $UDEVSTART_BIN || (echo "FAIL" && exit 1)
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+ mkdir $udev_root/pts $udev_root/shm
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+ echo "done"
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+ ;;
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+ stop)
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+ # do nothing
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+ ;;
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+ *)
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+ echo "Usage: $0 {start|stop}"
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+ exit 1
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+ ;;
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+esac
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Eric Andersen