5 kx #!/bin/sh
5 kx # This is a script to initialize udev, which populates the /dev
5 kx # directory with device nodes, scans for devices, loads the
5 kx # appropriate kernel modules, and configures the devices.
5 kx
5 kx PATH="/sbin:/bin"
5 kx
5 kx check_mounted() {
5 kx grep -E -q "^[^[:space:]]+ $1 $2" /proc/mounts
5 kx return $?
5 kx }
5 kx
5 kx mount_devpts() {
5 kx if ! check_mounted /dev/pts devpts ; then
5 kx mkdir /dev/pts 2> /dev/null
5 kx mount -n -o mode=0620,gid=5 -t devpts devpts /dev/pts
5 kx fi
5 kx }
5 kx
5 kx mount_devshm() {
5 kx if ! check_mounted /dev/shm tmpfs ; then
5 kx mkdir /dev/shm 2> /dev/null
5 kx mount /dev/shm
5 kx fi
5 kx }
5 kx
5 kx case "$1" in
5 kx start)
5 kx # Sanity check #1, udev requires that the kernel support tmpfs:
5 kx if ! grep -wq tmpfs /proc/filesystems ; then
5 kx echo "Sorry, but you need tmpfs support in the kernel to use udev."
5 kx echo
5 kx echo "FATAL: Refusing to run /etc/rc.d/rc.udev."
5 kx exit 1
5 kx fi
5 kx
5 kx # Sanity check #2, make sure that a 2.6.x kernel is new enough:
5 kx if [ "$(uname -r | cut -f 1,2 -d .)" = "2.6" ]; then
5 kx if [ "$(uname -r | cut -f 3 -d . | sed 's/[^[:digit:]].*//')" -lt "32" ]; then
5 kx echo "Sorry, but you need a 2.6.32+ kernel to use this udev."
5 kx echo "Your kernel version is only $(uname -r)."
5 kx echo
5 kx echo "FATAL: Refusing to run /etc/rc.d/rc.udev."
5 kx exit 1
5 kx fi
5 kx fi
5 kx
5 kx # Sanity check #3, make sure the udev package was not removed. If udevd
5 kx # is not there, this will also shut off this script to prevent further
5 kx # problems:
5 kx if [ ! -x /sbin/udevd ]; then
5 kx chmod 0644 /etc/rc.d/rc.udev
5 kx echo "No udevd daemon found."
5 kx echo "Turning off udev: chmod 644 /etc/rc.d/rc.udev"
5 kx echo "FATAL: Refusing to run /etc/rc.d/rc.udev."
5 kx exit 1
5 kx fi
5 kx
5 kx # Disable hotplug helper since udevd listens to netlink:
5 kx if [ -e /proc/sys/kernel/hotplug ]; then
5 kx echo "" > /proc/sys/kernel/hotplug
5 kx fi
5 kx
5 kx if grep -qw devtmpfs /proc/filesystems ; then
5 kx if ! check_mounted /dev devtmpfs ; then
5 kx # umount shm if needed
5 kx check_mounted /dev/shm tmpfs && umount -l /dev/shm
5 kx
5 kx # Umount pts if needed, we will remount it later:
5 kx check_mounted /dev/pts devpts && umount -l /dev/pts
5 kx
5 kx # Mount tmpfs on /dev:
5 kx mount -n -t devtmpfs -o size=8M devtmpfs /dev
5 kx fi
5 kx else
5 kx # Mount tmpfs on /dev:
5 kx if ! check_mounted /dev tmpfs ; then
5 kx # umount shm if needed
5 kx check_mounted /dev/shm tmpfs && umount -l /dev/shm
5 kx
5 kx # Umount pts if needed, we will remount it later:
5 kx check_mounted /dev/pts devpts && umount -l /dev/pts
5 kx
5 kx # Mount tmpfs on /dev:
5 kx # the -n is because we don't want /dev umounted when
5 kx # someone (rc.[06]) calls umount -a
5 kx mount -n -o mode=0755 -t tmpfs -o size=8M tmpfs /dev
5 kx fi
5 kx fi
5 kx
5 kx # Mount devpts
5 kx mount_devpts
5 kx mount_devshm
5 kx
5 kx if ! /sbin/pidof udevd 1>/dev/null 2>/dev/null; then # start udevd
5 kx echo "Creating static nodes in /dev."
5 kx kmod static-nodes -f tmpfiles --output /run/static-nodes
5 kx grep "^d\ " /run/static-nodes | while read line ; do
5 kx mkdir -p -m $(echo $line | cut -f 3 -d ' ') $(echo $line | cut -f 2 -d ' ')
5 kx done
5 kx grep -v "^d\ " /run/static-nodes | while read line ; do
5 kx mknod -m $(echo $line | cut -f 3 -d ' ') \
5 kx $(echo $line | cut -f 2 -d ' ') \
5 kx $(echo $line | cut -b1 ) \
5 kx $(echo $line | cut -f 7 -d ' ' | cut -f 1 -d :) \
5 kx $(echo $line | cut -f 7 -d ' ' | cut -f 2 -d :) 2> /dev/null
5 kx done
5 kx rm -f /run/static-nodes
5 kx # Add any system defined additional device nodes:
5 kx cp --preserve=all --recursive --update /lib/udev/devices/* /dev 2> /dev/null
5 kx # Add any locally defined additional device nodes:
5 kx cp --preserve=all --recursive --update /etc/udev/devices/* /dev 2> /dev/null
5 kx echo "Starting udevd: /sbin/udevd --daemon"
5 kx /sbin/udevd --daemon
5 kx # Since udev is just now being started we want to use add events:
5 kx echo "Triggering udev events: /sbin/udevadm trigger --action=add"
5 kx # Call udevtrigger and udevsettle to do the device configuration:
5 kx /sbin/udevadm trigger --type=subsystems --action=add
5 kx /sbin/udevadm trigger --type=devices --action=add
5 kx else # trigger changes for already running udevd
5 kx # If the persistent network rules file does not exist, trigger an add event:
5 kx if [ ! -r /etc/udev/rules.d/70-persistent-net.rules ]; then
5 kx # Test that we can actually write to the directory first:
5 kx if touch /etc/udev/rules.d/testfile 2> /dev/null ; then
5 kx rm -f /etc/udev/rules.d/testfile
5 kx # This should add persistent net rules:
5 kx echo "Triggering udev to write persistent rules to /etc/udev/rules.d/"
5 kx /sbin/udevadm trigger --type=devices --action=add
5 kx sleep 3
5 kx # Create the files if they don't exist at this point.
5 kx # If a machine does not have a network device or an optical
5 kx # device, we don't want to waste time trying to generate
5 kx # rules at every boot.
5 kx # To force another attempt, delete the file(s).
5 kx touch /etc/udev/rules.d/70-persistent-net.rules
5 kx fi
5 kx fi
5 kx # Update the hardware database index (/etc/udev/hwdb.bin), if possible:
5 kx if touch /etc/udev/testfile 2> /dev/null ; then
5 kx rm -f /etc/udev/testfile
5 kx echo "Updating hardware database index: /sbin/udevadm hwdb --update"
5 kx /sbin/udevadm hwdb --update
5 kx fi
5 kx # Since udevd is running, most of the time we only need change events:
5 kx echo "Triggering udev events: /sbin/udevadm trigger --action=change"
5 kx /sbin/udevadm trigger --type=subsystems --action=change
5 kx /sbin/udevadm trigger --type=devices --action=change
5 kx fi
5 kx /sbin/udevadm settle --timeout=120
5 kx ;;
5 kx stop)
5 kx echo "Stopping udevd is STRONGLY discouraged and not supported."
5 kx echo "If you are sure you want to do this, use 'force-stop' instead."
5 kx ;;
5 kx force-stop)
5 kx echo "Stopping udevd"
5 kx udevadm control --exit
5 kx killall udevd 2>/dev/null
5 kx ;;
5 kx restart)
5 kx echo "Restarting udevd is STRONGLY discouraged and not supported."
5 kx echo "If you are sure you want to do this, use 'force-restart' instead."
5 kx ;;
5 kx force-restart)
5 kx echo "Restarting udevd"
5 kx udevadm control --exit
5 kx sleep 3
5 kx udevd --daemon
5 kx ;;
5 kx reload)
5 kx echo "Reloading udev rules"
5 kx udevadm control --reload
5 kx ;;
5 kx force-reload)
5 kx echo "Updating all available device nodes in /dev"
5 kx udevadm control --reload
5 kx rm -rf /dev/.udev /dev/disk
5 kx cp --preserve=all --recursive --update /lib/udev/devices/* /dev 2> /dev/null
5 kx ;;
5 kx
5 kx *)
5 kx echo "Usage: $0 {start|stop|restart|reload|force-reload}"
5 kx exit 1
5 kx ;;
5 kx esac
Radix cross Linux
The main Radix cross Linux repository contains the build scripts of packages, which have the most complete and common functionality for desktop machines
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