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|
#!/bin/bash
#
# start_udev
#
# script to initialize /dev by using udev.
#
# Copyright (C) 2004 Greg Kroah-Hartman <greg@kroah.com>
#
# Released under the GPL v2 only.
#
# 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
# 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...
#
# don't use udev if sysfs is not mounted.
sysfs_dir=/sys
TZ=/etc/localtime
export TZ
[ -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
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;
for i in 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 \
16 17 18 19 20 21 22 23 24 25 26 27 28 29 \
30 31; do echo md$i;done;
);
[ -a /dev/MAKEDEV ] || ln -s $MAKEDEV /dev/MAKEDEV;
cp -a /etc/udev/devices/* /dev/ >/dev/null 2>&1 || :
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"
}
# 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 "$found"
}
kill_udevd() {
if [ -x /sbin/pidof ]; then
pid=`/sbin/pidof -x udevd`
[ -n "$pid" ] && kill $pid
fi
}
# call hotplug with the scsi devices
scsi_replay () {
HOTPLUG=$(cat /proc/sys/kernel/hotplug)
[ -z "$HOTPLUG" ] && return 1
scsi_hosts=$(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 $dev ] || continue
export SEQNUM
DEVPATH=${dev%/type}
DEVPATH=${DEVPATH#/sys}
export DEVPATH
export ACTION=add
$HOTPLUG scsi_device
SEQNUM=$[$SEQNUM + 1]
$HOTPLUG scsi
SEQNUM=$[$SEQNUM + 1]
done
done
return 0
}
ide_scan() {
if [ ! -d /proc/ide ]; then
return 1
fi
for i in /proc/ide/*/media; do
read media < "$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 $module
done
return 0
}
export ACTION=add
export UDEV_NO_SLEEP=1
prog=udev
ret=0
STRING=$"Starting $prog: "
# propagate $udev_root from /sys
echo -n "$STRING "
# mount the tmpfs on ${udev_root%/}, if not already done
LANG=C grep -F -q "none ${udev_root%/} " /proc/mounts || {
if LANG=C grep -F -q "none ${udev_root%/}/pts " /proc/mounts; then
PTSDIR=$(mktemp -d)
mount --move /dev/pts "$PTSDIR"
fi
if LANG=C grep -F -q "none ${udev_root%/}/shm " /proc/mounts; then
SHMDIR=$(mktemp -d)
mount --move /dev/shm "$SHMDIR"
fi
mount -n -o mode=0755 -t tmpfs none "$udev_root"
mkdir -m 0755 $udev_root/pts
mkdir -m 0755 $udev_root/shm
if [ -n "$PTSDIR" ]; then
mount --move "$PTSDIR" /dev/pts
rmdir "$PTSDIR"
fi
if [ -n "$SHMDIR" ]; then
mount --move "$SHMDIR" /dev/shm
rmdir "$SHMDIR"
fi
ret=$[$ret + $?]
}
rm -f $udev_root/.udev.tdb
make_extra_nodes
kill_udevd >/dev/null 2>&1
scsi_replay >/dev/null 2>&1
ret=$[$ret + $?]
kill_udevd >/dev/null 2>&1
ide_scan >/dev/null 2>&1
/sbin/udevstart </dev/null >/dev/null 2>&1
ret=$[$ret + $?]
[ $ret -eq 0 ] && success $"$STRING" || failure $"$STRING"
echo
exit 0
|
