| 1 | #!/bin/bash
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| 2 | #
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| 3 | # start_udev
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| 4 | #
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| 5 | # script to initialize /dev by using udev.
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| 6 | #
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| 7 | # Copyright (C) 2004 Greg Kroah-Hartman <greg@kroah.com>
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| 8 | #
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| 9 | # Released under the GPL v2 only.
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| 10 | #
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| 11 | # This needs to be run at the earliest possible point in the boot
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| 12 | # process.
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| 13 | #
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| 14 | # Based on the udev init.d script
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| 15 | #
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| 16 | # Thanks go out to the Gentoo developers for proving
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| 17 | # that this is possible to do.
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| 18 | #
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| 19 | # Yes, it's very verbose, feel free to turn off all of the echo calls,
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| 20 | # they were there to make me feel better that everything was working
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| 21 | # properly during development...
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| 22 | #
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| 23 | # don't use udev if sysfs is not mounted.
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| 24 |
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| 25 | sysfs_dir=/sys
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| 26 |
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| 27 | export TZ=/etc/localtime
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| 28 |
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| 29 | [ -d $sysfs_dir/class ] || exit 1
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| 30 | [ -r /proc/mounts ] || exit 1
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| 31 | [ -x /sbin/udevd ] || exit 1
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| 32 | [ -f /etc/udev/udev.conf ] && . /etc/udev/udev.conf
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| 33 | udev_root=${udev_root-/dev}
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| 34 |
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| 35 | if [ -f /dev/.in_sysinit ]; then
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| 36 | exec >/dev/console 2>/dev/console </dev/console
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| 37 | fi
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| 38 |
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| 39 | . /etc/init.d/functions
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| 40 | . /etc/sysconfig/udev
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| 41 |
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| 42 | prog=udev
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| 43 | bin=/sbin/udev
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| 44 | udevd=/sbin/udevd
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| 45 | MAKEDEV="/sbin/MAKEDEV"
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| 46 |
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| 47 | # Check SELinux status
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| 48 | selinuxfs="$(fstab_decode_str `LC_ALL=C awk '/ selinuxfs / { print $2 }' /proc/mounts`)"
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| 49 | SELINUX_STATE=
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| 50 | if [ -n "$selinuxfs" ] && [ "`cat /proc/self/attr/current`" != "kernel" ]; then
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| 51 | if [ -r "$selinuxfs/enforce" ] ; then
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| 52 | SELINUX_STATE=`cat "$selinuxfs/enforce"`
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| 53 | else
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| 54 | # assume enforcing if you can't read it
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| 55 | SELINUX_STATE=1
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| 56 | fi
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| 57 | fi
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| 58 |
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| 59 |
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| 60 |
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| 61 | xargs_simple () {
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| 62 | if [ "$1" = "-n" ]; then
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| 63 | shift
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| 64 | MAXNR="$1"
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| 65 | shift
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| 66 | else
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| 67 | MAXNR=100
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| 68 | fi
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| 69 | NR=$MAXNR
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| 70 | ARGS=""
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| 71 | [ -z "$1" ] && set echo
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| 72 |
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| 73 | while read line; do
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| 74 | if [ $NR -gt 0 ]; then
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| 75 | ARGS="$ARGS $line"
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| 76 | NR=$[$NR - 1]
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| 77 | else
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| 78 | "$@" $ARGS
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| 79 | NR=$MAXNR
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| 80 | ARGS="$line"
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| 81 | fi
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| 82 | done
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| 83 | if [ -n "$ARGS" ]; then
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| 84 | "$@" $ARGS
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| 85 | fi
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| 86 | }
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| 87 |
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| 88 | make_extra_nodes () {
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| 89 | ln -snf /proc/self/fd $udev_root/fd
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| 90 | ln -snf /proc/self/fd/0 $udev_root/stdin
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| 91 | ln -snf /proc/self/fd/1 $udev_root/stdout
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| 92 | ln -snf /proc/self/fd/2 $udev_root/stderr
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| 93 | ln -snf /proc/kcore $udev_root/core
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| 94 |
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| 95 | [ -d $udev_root/pts ] || mkdir -m 0755 $udev_root/pts
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| 96 | [ -d $udev_root/shm ] || mkdir -m 0755 $udev_root/shm
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| 97 | [ -d $udev_root/hugepages ] || mkdir -m 0755 $udev_root/hugepages
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| 98 | [ -a /dev/MAKEDEV ] || ln -s $MAKEDEV /dev/MAKEDEV;
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| 99 |
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| 100 | USE_MD5="false"
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| 101 | [ -x /usr/bin/md5sum -a "$UDEV_USE_MAKEDEV_CACHE" == "yes" ] && USE_MD5="true"
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| 102 |
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| 103 | for i in 0 1 2 3 4 5 6 7; do
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| 104 | [ -b /dev/loop$i ] || /bin/mknod -m 0640 /dev/loop$i b 7 $i
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| 105 | /bin/chown root:disk /dev/loop$i
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| 106 | done
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| 107 |
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| 108 | for i in 0 1 2 3; do
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| 109 | [ -c /dev/lp$i ] || /bin/mknod -m 0660 /dev/lp$i c 6 $i
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| 110 | /bin/chown root:lp /dev/lp$i
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| 111 | done
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| 112 |
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| 113 | [ -d /dev/net ] || mkdir -p /dev/net
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| 114 | [ -c /dev/net/tun ] || /bin/mknod -m 0666 /dev/net/tun c 10 200
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| 115 | #/bin/chown root:root /dev/net/tun
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| 116 |
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| 117 | [ -c /dev/ppp ] || /bin/mknod -m 0600 /dev/ppp c 108 0
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| 118 | #/bin/chown root:root /dev/ppp
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| 119 |
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| 120 | [ -c /dev/fuse ] || /bin/mknod -m 0666 /dev/fuse c 10 229
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| 121 | #/bin/chown root:root /dev/fuse
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| 122 |
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| 123 | if [ -x /sbin/restorecon ]; then
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| 124 | /sbin/restorecon -R /dev
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| 125 | fi
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| 126 |
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| 127 | if [ -x "$MAKEDEV" ]; then
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| 128 | for i in /etc/udev/makedev.d/*.nodes; do
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| 129 | if [ -f "$i" ]; then
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| 130 | # use a little caching to speedup things
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| 131 | if [ "$USE_MD5" == "true" ]; then
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| 132 | # fix for MAKEDEV shell scripts
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| 133 | [ -d /dev/.udev/makedev.d ] || mkdir -p /dev/.udev/makedev.d
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| 134 | md5=$(/usr/bin/md5sum "$i"|(read a b; echo $a))-se$SELINUX_STATE
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| 135 | if [ -f "/var/lib/udev/makedev.d/${md5}.sh" ];then
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| 136 | md5file="/var/lib/udev/makedev.d/${md5}.sh"
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| 137 | else
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| 138 | md5file="/dev/.udev/makedev.d/${md5}.sh"
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| 139 | fi
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| 140 | if [ ! -f "$md5file" ]; then
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| 141 | ( sed -e 's,#.*,,g' "$i" | \
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| 142 | xargs_simple -n 100 $MAKEDEV -x -a -S ) \
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| 143 | > "$md5file"
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| 144 | fi
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| 145 | . "$md5file" >$udev_root/null 2>&1
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| 146 | else
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| 147 | ( sed -e 's,#.*,,g' "$i" | \
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| 148 | xargs_simple -n 100 $MAKEDEV -x )
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| 149 | fi
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| 150 | fi
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| 151 | done
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| 152 | fi
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| 153 |
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| 154 | for devdir in /etc/udev/devices /lib/udev/devices; do
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| 155 | [ -d "$devdir" ] || continue
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| 156 | pushd $devdir &> "$udev_root/null"
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| 157 | set *
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| 158 | if [ "$1" != "*" ]; then
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| 159 | #echo "Warning: $devdir is deprecated. Please use /etc/udev/makedev.d/."
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| 160 | cp -ar "$@" $udev_root/
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| 161 | pushd "$udev_root" &> "$udev_root/null"
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| 162 | [ -x /sbin/restorecon ] && /sbin/restorecon "$@"
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| 163 | popd &> "$udev_root/null"
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| 164 | fi
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| 165 | popd &> "$udev_root/null"
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| 166 | done
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| 167 | }
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| 168 |
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| 169 | kill_udevd() {
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| 170 | if [ -x /sbin/pidof ]; then
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| 171 | pid=`/sbin/pidof -x udevd`
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| 172 | [ -n "$pid" ] && kill $pid
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| 173 | fi
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| 174 | }
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| 175 |
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| 176 | findalias () {
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| 177 | local n
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| 178 | for n in "$1"/* ; do
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| 179 | [ -h "$n" ] && continue
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| 180 | [ -d "$n" ] && { findalias "$n" ; continue; }
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| 181 | [ "${n##*/}" == "modalias" ] && echo $(cat $n)
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| 182 | done
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| 183 | }
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| 184 |
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| 185 | # returns OK if $1 contains $2
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| 186 | strstr() {
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| 187 | [ "${1#*$2*}" = "$1" ] && return 1
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| 188 | return 0
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| 189 | }
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| 190 |
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| 191 | getval() {
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| 192 | what=$1
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| 193 | shift
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| 194 | for arg; do
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| 195 | if strstr "$arg" "$what="; then
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| 196 | val=${arg#${what}=*}
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| 197 | echo $val
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| 198 | return 0
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| 199 | fi
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| 200 | done
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| 201 | return 1
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| 202 | }
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| 203 |
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| 204 | wait_for_queue() {
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| 205 | local timeout=${1:-0}
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| 206 | local ret=0
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| 207 | if [ $timeout -gt 0 ]; then
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| 208 | /sbin/udevadm settle --timeout=$timeout
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| 209 | else
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| 210 | /sbin/udevadm settle
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| 211 | fi
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| 212 | ret=$?
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| 213 | if [ $ret -ne 0 ]; then
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| 214 | echo -n "Wait timeout. Will continue in the background."
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| 215 | fi
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| 216 | return $ret;
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| 217 | }
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| 218 |
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| 219 | export ACTION=add
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| 220 | prog=udev
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| 221 | ret=0
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| 222 | STRING=$"Starting $prog: "
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| 223 | # propagate $udev_root from /sys
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| 224 | echo -n "$STRING"
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| 225 |
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| 226 | # mount the tmpfs on ${udev_root%/}, if not already done
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| 227 | LANG=C awk "\$2 == \"${udev_root%/}\" && ( \$3 == \"devtmpfs\" || \$3 == \"tmpfs\" ) { exit 1 }" /proc/mounts && {
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| 228 | if LANG=C fgrep -q "none ${udev_root%/}/pts " /proc/mounts; then
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| 229 | PTSDIR=$(mktemp -d)
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| 230 | mount --move $udev_root/pts "$PTSDIR"
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| 231 | fi
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| 232 | if LANG=C fgrep -q "none ${udev_root%/}/shm " /proc/mounts; then
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| 233 | SHMDIR=$(mktemp -d)
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| 234 | mount --move $udev_root/shm "$SHMDIR"
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| 235 | fi
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| 236 | # First try to mount a devtmpfs on $udev_root
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| 237 | mount -n -o mode=0755 -t devtmpfs none "$udev_root" 2>/dev/null \
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| 238 | || mount -n -o mode=0755 -t tmpfs none "$udev_root"
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| 239 | mkdir -m 0755 $udev_root/pts
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| 240 | mkdir -m 0755 $udev_root/shm
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| 241 | if [ -n "$PTSDIR" ]; then
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| 242 | mount --move "$PTSDIR" $udev_root/pts
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| 243 | rmdir "$PTSDIR"
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| 244 | fi
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| 245 | if [ -n "$SHMDIR" ]; then
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| 246 | mount --move "$SHMDIR" $udev_root/shm
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| 247 | rmdir "$SHMDIR"
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| 248 | fi
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| 249 |
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| 250 | ret=$[$ret + $?]
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| 251 | }
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| 252 |
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| 253 | make_extra_nodes
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| 254 | cmdline=$(cat /proc/cmdline)
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| 255 | kill_udevd > "$udev_root/null" 2>&1
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| 256 | [ -d $udev_root/.udev ] || mkdir -p $udev_root/.udev > "$udev_root/null" 2>&1
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| 257 | UDEV_OPTS=""
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| 258 | if [ -f "/sys/class/tty/console/uevent" ]; then
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| 259 | # trigger the sorted events
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| 260 | echo -e '\000\000\000\000' > /proc/sys/kernel/hotplug
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| 261 |
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| 262 | if strstr "$cmdline" udevtrace; then
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| 263 | UDEV_OPTS="$UDEV_OPTS --debug-trace"
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| 264 | fi
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| 265 |
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| 266 | if strstr "$cmdline" udevlog; then
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| 267 | UDEV_OPTS="$UDEV_OPTS --debug"
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| 268 | /sbin/udevd -d $UDEV_OPTS 2>$udev_root/.udev/udev.log
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| 269 | else
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| 270 | /sbin/udevd -d $UDEV_OPTS
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| 271 | fi
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| 272 |
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| 273 | wait
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| 274 | ret=$[$ret + $?]
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| 275 |
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| 276 | udevtimeout=$(getval udevtimeout $cmdline)
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| 277 |
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| 278 | if strstr "$cmdline" udevdebug; then
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| 279 | /sbin/udevadm control --log-priority=debug
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| 280 | fi
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| 281 | if strstr "$cmdline" udevinfo; then
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| 282 | /sbin/udevadm control --log-priority=info
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| 283 | fi
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| 284 | if strstr "$cmdline" udevchilds; then
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| 285 | /sbin/udevadm control --max-childs=$(getval udevchilds $cmdline)
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| 286 | fi
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| 287 | if strstr "$cmdline" noiswmd; then
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| 288 | /sbin/udevadm control --env=rd_NO_MDIMSM=1
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| 289 | fi
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| 290 |
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| 291 | . /etc/sysconfig/network
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| 292 | if [ "$BIOSDEVNAME" = "yes" ]; then
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| 293 | /sbin/udevadm control --property=UDEV_BIOSDEVNAME=1
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| 294 | fi
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| 295 | if [ "$BIOSDEVNAME" = "no" ]; then
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| 296 | /sbin/udevadm control --property=UDEV_BIOSDEVNAME=0
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| 297 | fi
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| 298 |
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| 299 | /sbin/udevadm control --env=STARTUP=1
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| 300 |
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| 301 | if strstr "$cmdline" modprobedebug; then
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| 302 | /sbin/udevadm control --env=MODPROBE_OPTIONS="-s -v -q"
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| 303 | echo
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| 304 | findalias /sys | while read modules ; do
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| 305 | if [ -n "$modules" ]; then
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| 306 | echo "Loading modules for $modules in 5 seconds"
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| 307 | sleep 5
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| 308 | /sbin/modprobe -a -v -q $modules
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| 309 | wait_for_queue $udevtimeout
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| 310 | fi
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| 311 | done
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| 312 | echo "Triggering Rest"
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| 313 | fi
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| 314 |
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| 315 | /sbin/udevadm trigger --type=subsystems --action=add
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| 316 | /sbin/udevadm trigger --type=devices --action=add
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| 317 |
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| 318 | ret=$[$ret + $?]
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| 319 | wait_for_queue $udevtimeout
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| 320 | ret=$[$ret + $?]
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| 321 | wait
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| 322 | /sbin/udevadm control --env=STARTUP=
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| 323 | else
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| 324 | echo -n " kernel too old for this udev version "
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| 325 | /sbin/udevd -d $UDEV_OPTS
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| 326 | ret=10
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| 327 |
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| 328 | fi
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| 329 |
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| 330 | ret=$[$ret + $?]
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| 331 | [ $ret -eq 0 ] && success $"$STRING" || failure $"$STRING"
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| 332 | echo
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| 333 | exit 0
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