#
# 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,
# properly during development...
# default value, if no config present.
-udev_root="/dev/"
+udev_root="/dev"
sysfs_dir="/sys"
-udev_db="/dev/.udevdb"
+udevd_timeout=8
# don't use udev if sysfs is not mounted.
[ -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/rc.d/init.d/functions
prog=udev
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 -m 0755 $udev_root/pts
- [ -d $udev_root/shm ] || mkdir -m 0755 $udev_root/shm
-
- if [ -x $MAKEDEV ]; then
- $MAKEDEV -x $(
- for i in 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15; do
- echo cpu/$i/microcode;
- done;
- for i in 1 2 3 4 5 6; do echo tty$i;done;
- for i in 0 1 2 3 4 5 6 7; do echo loop$i; done;
- for i in 0 1 2 3; do echo lp$i; echo parport$i;done;
- echo net/tun ppp console null zero;
- );
- [ -a /dev/MAKEDEV ] || ln -sf "$MAKEDEV" /dev/MAKEDEV;
- cp -a /etc/udev/devices/* /dev/ >/dev/null 2>&1 || :
- fi
+udevd=/lib/udev/udevd
+# trim traling slash, code expects it not to be there
+udev_root=${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 $arg1)" ;;
+ esac
+ done
+ [ -d /lib/udev/devices ] && cp -a /lib/udev/devices/* /dev/ >/dev/null 2>&1 || :
+ [ -d /lib64/udev/devices ] && cp -a /lib64/udev/devices/* /dev/ >/dev/null 2>&1 || :
}
kill_udevd() {
if [ -x /sbin/pidof ]; then
- pid=`/sbin/pidof -x udevd`
+ pid=$(/sbin/pidof -x udevd)
[ -n "$pid" ] && kill $pid
fi
}
-# we cannot use /usr/bin/find here
-find_d () {
- where=$1
- what=$2
- found=""
- for f in $where/*; do
- if [ -d "$f" -a ! -L "$f" ]; then
- if [ "$f" != "${f%%$what}" ];then
- # make sure we are at the path end
- # we have no dirname and basename
- rest="${f#*$what}"
- [ "${rest##*/}" = "$rest" ] && found="$found $f"
- fi
- found="$found $(find_d $f $what)"
- fi
- done
- echo "$found"
+set_hotplug_handler() {
+ echo "" > /proc/sys/kernel/hotplug
}
-# we cannot use /usr/bin/find here
-find_f () {
- where=$1
- what=$2
- found=""
- for f in $where/*; do
- if [ -d "$f" -a ! -L "$f" ]; then
- found="$found $(find_f $f $what)"
- elif [ -e "$f" ]; then
- [ "$where/" = "${f%$what}" ] && found="$found $f"
- fi
- done
- [ -n "$found" ] && echo "$found"
-}
+# find subdirs mounted under $udev_root
+get_dev_mounts() {
+ awk -vudev_root="$udev_root/" '
+ BEGIN {
+ len = length(udev_root);
+ }
-# call hotplug with the scsi devices
-scsi_replay () {
- HOTPLUG="/sbin/udevsend"
-
- scsi_hosts=$(find_d /sys/devices host\*)
- SEQNUM=1
-
- for host in $scsi_hosts; do
- [ -d $host ] || continue
- devs=$(find_f $host type)
- for dev in $devs;do
- [ -f $dev ] || continue
- DEVPATH=${dev%/type}
- DEVPATH=${DEVPATH#/sys}
- /bin/env -i DEVPATH="$DEVPATH" SUBSYSTEM=scsi_device ACTION=add $HOTPLUG scsi_device
- /bin/env -i DEVPATH="$DEVPATH" ACTION=add SUBSYSTEM=scsi $HOTPLUG scsi
- done
- done
- return 0
+ substr($2, 1, len) == udev_root {
+ print substr($2, len + 1)
+ }' /proc/mounts
}
-ide_scan() {
- if [ ! -d /proc/ide ]; then
- return 1
- fi
- for i in /proc/ide/*/media; do
- read media < "$i"
- case "$media" in
- disk)
- module=ide-disk
- ;;
- cdrom)
- module=ide-cd
- ;;
- tape)
- module=ide-tape
- ;;
- floppy)
- module=ide-floppy
- ;;
- *)
- module=ide-generic
- ;;
- esac
- /sbin/modprobe $module
- done
- return 0
-}
+show "Starting udev"; busy
export ACTION=add
prog=udev
ret=0
-nls "Starting udev"
-# mount the tmpfs on ${udev_root%/}, if not already done
-LANG=C awk "\$2 == \"${udev_root%/}\" && \$3 == \"tmpfs\" { exit 1 }" /proc/mounts && {
- if LANG=C fgrep -q "none ${udev_root%/}/pts " /proc/mounts; then
- PTSDIR=$(mktemp -d ${TMPDIR:-/tmp}/tmpXXXXXX)
- mount --move $udev_root/pts "$PTSDIR"
- fi
- if LANG=C fgrep -q "none ${udev_root%/}/shm " /proc/mounts; then
- SHMDIR=$(mktemp -d ${TMPDIR:-/tmp}/tmpXXXXXX)
- mount --move $udev_root/shm "$SHMDIR"
+# 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 tmpfs none "$udev_root"
- mkdir -m 0755 $udev_root/pts
- mkdir -m 0755 $udev_root/shm
- if [ -n "$PTSDIR" ]; then
- mount --move "$PTSDIR" $udev_root/pts
- rmdir "$PTSDIR"
- fi
- if [ -n "$SHMDIR" ]; then
- mount --move "$SHMDIR" $udev_root/shm
- rmdir "$SHMDIR"
- fi
-
+ mount -n -o mode=0755 -t devtmpfs devtmpfs "$devdir"
ret=$(( $ret + $? ))
-}
-rm -fr "$udev_db"
+ # relocate submounts
+ for dir in $submounts; do
+ mount -n --move $udev_root/$dir $devdir/$dir
+ ret=$(( $ret + $? ))
+ done
-make_extra_nodes
+ if [ "$submounts" ]; then
+ mount -n --move $devdir $udev_root
+ rmdir $devdir
+ fi
+}
kill_udevd > "$udev_root/null" 2>&1
-scsi_replay > "$udev_root/null" 2>&1
+# Create required static device nodes for the current kernel
+create_static_nodes
-ret=$(( $ret + $? ))
+# Start udevd daemon
+$udevd --daemon; rc=$?
+test $rc -eq 0 && ok || fail
+ret=$(( $ret + $rc ))
-ide_scan > "$udev_root/null" 2>&1
+# Making extra nodes
+show "Setup extra nodes"; busy
+make_extra_nodes; rc=$?
+test $rc -eq 0 && ok || fail
+ret=$(( $ret + $rc ))
-echo /sbin/udevsend > /proc/sys/kernel/hotplug
-
-/sbin/udevstart
-
-/sbin/udevd --daemon
+if [ -f /sys/class/tty/console/uevent ]; then
+ # Setting default hotplug handler
+ set_hotplug_handler
+ ret=$(( $ret + $? ))
-ret=$(( $ret + $? ))
-[ $ret -eq 0 ] && ok || fail
-exit 0
+ # retrigger all events
+ show "Retrigger subsystems events"; busy
+ /sbin/udevadm trigger --type=subsystems --action=add; rc=$?
+ 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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