#
# Released under the GPL v2 only.
#
-# This needs to be run at the earliest possible point in the boot
+# This needs to be run at the earliest possible point in the boot
# process.
#
# Based on the udev init.d script
#
-# Thanks go out to the Gentoo developers for proving
+# Thanks go out to the Gentoo developers for proving
# that this is possible to do.
#
# Yes, it's very verbose, feel free to turn off all of the echo calls,
# they were there to make me feel better that everything was working
# properly during development...
-#
+
+# default value, if no config present.
+udev_root="/dev"
+sysfs_dir="/sys"
+udevd_timeout=8
+
# don't use udev if sysfs is not mounted.
-[ ! -d $sysfs_dir/class ] || exit 1
+[ -d $sysfs_dir/class ] || exit 1
[ -r /proc/mounts ] || exit 1
-[ -x /sbin/udev ] || exit 1
[ -f /etc/udev/udev.conf ] && . /etc/udev/udev.conf
-
-. /etc/init.d/functions
+. /etc/rc.d/init.d/functions
prog=udev
-sysfs_dir=/sys
bin=/sbin/udev
-udevd=/sbin/udevd
-MAKEDEV="/sbin/MAKEDEV"
-
-make_extra_nodes () {
- ln -snf /proc/self/fd $udev_root/fd
- ln -snf /proc/self/fd/0 $udev_root/stdin
- ln -snf /proc/self/fd/1 $udev_root/stdout
- ln -snf /proc/self/fd/2 $udev_root/stderr
- ln -snf /proc/kcore $udev_root/core
-
- [ -d $udev_root/pts ] || (mkdir $udev_root/pts;chmod 0755 $udev_root/pts)
- [ -d $udev_root/shm ] || (mkdir $udev_root/shm;chmod 0755 $udev_root/shm)
-
- if [ -x $MAKEDEV ]; then
- $MAKEDEV -x $(
- for i in 0 1 2 3 4 5 6 7; do echo fd$i; done
- for i in 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15; do
- echo cpu/$i/microcode;
- done;
- for i in 0 1 2 3 4 5 6 7; do echo loop$i; done
- for i in 0 1 2 3; do echo lp$i; echo par$i;done
- echo net/tun ppp;
- );
- [ -a /dev/MAKEDEV ] || ln -s $MAKEDEV /dev/MAKEDEV;
+udevd=/lib/udev/udevd
+# trim traling slash, code expects it not to be there
+udev_root=${udev_root%/}
+
+create_static_nodes() {
+ /sbin/kmod static-nodes --format=tmpfiles | \
+ while read type file mode uid gid age dev ; do
+ case $type in
+ d|D)
+ mkdir -p --mode=$mode $file
+ ;;
+ *)
+ oldIFS=$IFS
+ IFS=":"
+ set -- $dev
+ maj=$1
+ min=$2
+ IFS=$oldIFS
+ mknod --mode=$mode $file $type $maj $min
+ ;;
+ esac
+ [ $uid = "-" ] || chown $uid $file
+ [ $gid = "-" ] || chgrp $gid $file
+ done
+}
+
+make_extra_nodes() {
+ grep '^[^#]' /etc/udev/links.conf | \
+ while read type name arg1; do
+ [ "$type" -a "$name" -a ! -e "$udev_root/$name" -a ! -L "/dev/$name" ] ||continue
+ case "$type" in
+ L) ln -s $arg1 $udev_root/$name ;;
+ D) mkdir -p $udev_root/$name ;;
+ M) mknod -m 600 /dev/$name $arg1 ;;
+ *) echo "links.conf: unparseable line ($type $name $arg1)" ;;
+ esac
+ done
+ [ -d /lib/udev/devices ] && cp -a /lib/udev/devices/* /dev/ >/dev/null 2>&1 || :
+ [ -d /lib64/udev/devices ] && cp -a /lib64/udev/devices/* /dev/ >/dev/null 2>&1 || :
+}
+
+kill_udevd() {
+ if [ -x /sbin/pidof ]; then
+ pid=$(/sbin/pidof -x udevd)
+ [ -n "$pid" ] && kill $pid
fi
}
-mount_udev() {
- mount -n -o fscontext=system_u:object_r:device_t,mode=0755 \
- -t tmpfs none "$udev_root"
- return $?
+set_hotplug_handler() {
+ echo "" > /proc/sys/kernel/hotplug
}
+# find subdirs mounted under $udev_root
+get_dev_mounts() {
+ awk -vudev_root="$udev_root/" '
+ BEGIN {
+ len = length(udev_root);
+ }
-grep -q " ${udev_root%/} " /proc/mounts || {
- STRING=$"Mounting... tmpfs at $udev_root: "
- echo -n "$STRING ";
- mount_udev && success $"$STRING" || failure $"$STRING";
+ substr($2, 1, len) == udev_root {
+ print substr($2, len + 1)
+ }' /proc/mounts
}
-
-STRING=$"Making extra nodes: "
-echo -n "$STRING "
-make_extra_nodes && success $"$STRING" || failure $"$STRING"
-echo
+show "Starting udev"; busy
export ACTION=add
-export UDEV_NO_SLEEP=1
-STRING=$"Starting udev: "
-# propagate $udev_root from /sys
-echo -n "$STRING "
-rm -f $udev_root/.udev.tdb
-/sbin/udevstart && success $"$STRING" || failure $"$STRING"
-echo
-
-exit 0
+prog=udev
+ret=0
+
+# mount the devtmpfs on $udev_root, if not already done
+awk "\$2 == \"$udev_root\" && \$3 == \"devtmpfs\" { exit 1 }" /proc/mounts && {
+ submounts=$(get_dev_mounts)
+
+ if [ "$submounts" ]; then
+ # mount to temporary location to be able to move submounts
+ # this needs writable TMPDIR:-/tmp, so it won't work in early boot
+ # but fix is simple: use initramfs instead of romfs
+ devdir=$(mktemp -d ${TMPDIR:-/tmp}/tmpXXXXXX)
+ else
+ devdir=$udev_root
+ fi
+ mount -n -o mode=0755 -t devtmpfs devtmpfs "$devdir"
+ ret=$(( $ret + $? ))
+
+ # relocate submounts
+ for dir in $submounts; do
+ mount -n --move $udev_root/$dir $devdir/$dir
+ ret=$(( $ret + $? ))
+ done
+
+ if [ "$submounts" ]; then
+ mount -n --move $devdir $udev_root
+ rmdir $devdir
+ fi
+}
+
+kill_udevd > "$udev_root/null" 2>&1
+
+# Create required static device nodes for the current kernel
+create_static_nodes
+
+# Start udevd daemon
+$udevd --daemon; rc=$?
+test $rc -eq 0 && ok || fail
+ret=$(( $ret + $rc ))
+
+# Making extra nodes
+show "Setup extra nodes"; busy
+make_extra_nodes; rc=$?
+test $rc -eq 0 && ok || fail
+ret=$(( $ret + $rc ))
+
+if [ -f /sys/class/tty/console/uevent ]; then
+ # Setting default hotplug handler
+ set_hotplug_handler
+ ret=$(( $ret + $? ))
+
+ # retrigger all events
+ show "Retrigger subsystems events"; busy
+ /sbin/udevadm trigger --type=subsystems --action=add; rc=$?
+ test $rc -eq 0 && ok || fail
+ ret=$(( $ret + $rc ))
+
+ show "Retrigger devices events"; busy
+ /sbin/udevadm trigger --type=devices --action=add; rc=$?
+ test $rc -eq 0 && ok || fail
+ ret=$(( $ret + $rc ))
+
+ # wait for the events to finish
+ show "udevadm settle"; busy
+ /sbin/udevadm settle; rc=$?
+ test $rc -eq 0 && ok || fail
+ ret=$(( $ret + $rc ))
+else
+ echo "Kernel too old for this udev version"
+fi
+
+exit $ret
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