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05149ed5 AM |
1 | #!/bin/sh |
2 | # | |
3 | # start_udev | |
4 | # | |
5 | # script to initialize /dev by using udev. | |
6 | # | |
7 | # Copyright (C) 2004 Greg Kroah-Hartman <greg@kroah.com> | |
8 | # | |
9 | # Released under the GPL v2 only. | |
10 | # | |
11 | # This needs to be run at the earliest possible point in the boot | |
12 | # process. | |
13 | # | |
14 | # Based on the udev init.d script | |
15 | # | |
16 | # Thanks go out to the Gentoo developers for proving | |
17 | # that this is possible to do. | |
18 | # | |
19 | # Yes, it's very verbose, feel free to turn off all of the echo calls, | |
20 | # they were there to make me feel better that everything was working | |
21 | # properly during development... | |
940e3565 ER |
22 | |
23 | # default value, if no config present. | |
24 | udev_root="/dev/" | |
b44e0a3d | 25 | sysfs_dir="/sys" |
d35df3ca | 26 | udevd_timeout=8 |
940e3565 | 27 | |
05149ed5 | 28 | # don't use udev if sysfs is not mounted. |
dda87135 | 29 | [ -d $sysfs_dir/class ] || exit 1 |
05149ed5 | 30 | [ -r /proc/mounts ] || exit 1 |
05149ed5 AM |
31 | [ -f /etc/udev/udev.conf ] && . /etc/udev/udev.conf |
32 | ||
401263e1 | 33 | . /etc/rc.d/init.d/functions |
05149ed5 AM |
34 | |
35 | prog=udev | |
05149ed5 AM |
36 | bin=/sbin/udev |
37 | udevd=/sbin/udevd | |
05149ed5 AM |
38 | |
39 | make_extra_nodes () { | |
ba060a4b | 40 | grep '^[^#]' /etc/udev/links.conf | \ |
41 | while read type name arg1; do | |
42 | [ "$type" -a "$name" -a ! -e "$udev_root/$name" -a ! -L "/dev/$name" ] ||continue | |
43 | case "$type" in | |
44 | L) ln -s $arg1 $udev_root/$name ;; | |
45 | D) mkdir -p $udev_root/$name ;; | |
15874c6e | 46 | M) mknod -m 600 /dev/$name $arg1 ;; |
ba060a4b | 47 | *) echo "links.conf: unparseable line ($type $name $arg1)" ;; |
48 | esac | |
49 | done | |
44abfb53 | 50 | cp -a /lib/udev/devices/* /dev/ >/dev/null 2>&1 || : |
05149ed5 AM |
51 | } |
52 | ||
d8394a8d AM |
53 | kill_udevd() { |
54 | if [ -x /sbin/pidof ]; then | |
55 | pid=`/sbin/pidof -x udevd` | |
56 | [ -n "$pid" ] && kill $pid | |
57 | fi | |
58 | } | |
59 | ||
294ac9d6 | 60 | set_hotplug_handler() { |
de6b464e | 61 | echo "" > /proc/sys/kernel/hotplug |
294ac9d6 | 62 | } |
15874c6e | 63 | |
05149ed5 | 64 | export ACTION=add |
6ba94d68 AM |
65 | prog=udev |
66 | ret=0 | |
90d90678 AM |
67 | show "Starting udev" |
68 | busy | |
294ac9d6 | 69 | |
120a2def AM |
70 | # mount the tmpfs on ${udev_root%/}, if not already done |
71 | LANG=C awk "\$2 == \"${udev_root%/}\" && \$3 == \"tmpfs\" { exit 1 }" /proc/mounts && { | |
de6b464e | 72 | if LANG=C fgrep -q "none ${udev_root%/}/pts " /proc/mounts; then |
73 | PTSDIR=$(mktemp -d ${TMPDIR:-/tmp}/tmpXXXXXX) | |
84853a2e ER |
74 | mount --move $udev_root/pts "$PTSDIR" |
75 | fi | |
76 | if LANG=C fgrep -q "none ${udev_root%/}/shm " /proc/mounts; then | |
5cccdef0 | 77 | SHMDIR=$(mktemp -d ${TMPDIR:-/tmp}/tmpXXXXXX) |
84853a2e ER |
78 | mount --move $udev_root/shm "$SHMDIR" |
79 | fi | |
80 | mount -n -o mode=0755 -t tmpfs none "$udev_root" | |
81 | mkdir -m 0755 $udev_root/pts | |
82 | mkdir -m 0755 $udev_root/shm | |
83 | if [ -n "$PTSDIR" ]; then | |
84 | mount --move "$PTSDIR" $udev_root/pts | |
85 | rmdir "$PTSDIR" | |
86 | fi | |
87 | if [ -n "$SHMDIR" ]; then | |
88 | mount --move "$SHMDIR" $udev_root/shm | |
89 | rmdir "$SHMDIR" | |
90 | fi | |
91 | ||
92 | ret=$(( $ret + $? )) | |
6ba94d68 | 93 | } |
120a2def | 94 | |
120a2def | 95 | kill_udevd > "$udev_root/null" 2>&1 |
ec7c0939 | 96 | |
de6b464e | 97 | if [ -f "/sys/class/tty/console/uevent" ]; then |
15874c6e | 98 | |
de6b464e | 99 | # Start udevd daemon |
d95b8af3 | 100 | udevd --daemon |
15874c6e | 101 | ret=$(( $ret + $? )) |
de6b464e | 102 | |
15874c6e | 103 | # Setting default hotplug handler |
de6b464e | 104 | set_hotplug_handler |
15874c6e | 105 | ret=$(( $ret + $? )) |
106 | ||
107 | # Making extra nodes | |
108 | make_extra_nodes | |
109 | ret=$(( $ret + $? )) | |
d95b8af3 | 110 | |
111 | # retrigger all events | |
112 | mkdir -p /dev/.udev/queue | |
113 | list=$(echo /sys/bus/*/devices/*/uevent) | |
114 | list="$list $(echo /sys/class/*/*/uevent)" | |
115 | list="$list $(echo /sys/block/*/uevent /sys/block/*/*/uevent)" | |
116 | for i in $list; do | |
117 | case "$i" in | |
118 | */device/uevent|*\**) | |
119 | continue | |
120 | ;; | |
121 | */class/mem/*|*/class/tty/*) | |
122 | first="$first $i" | |
123 | ;; | |
124 | */block/md*) | |
125 | last="$last $i" | |
126 | ;; | |
127 | */*) | |
128 | default="$default $i" | |
129 | ;; | |
130 | esac | |
131 | done | |
15874c6e | 132 | |
133 | ret=$(( $ret + $? )) | |
134 | ||
d95b8af3 | 135 | # trigger the sorted events |
136 | for i in $first $default $last; do | |
137 | echo "add" > "$i" | |
138 | done | |
139 | ||
15874c6e | 140 | ret=$(( $ret + $? )) |
141 | ||
d95b8af3 | 142 | # wait for the events to finish |
143 | loop=300 | |
144 | while test -d /dev/.udev/queue; do | |
145 | sleep 0.1; | |
146 | test "$loop" -gt 0 || break | |
147 | loop=$(($loop - 1)) | |
148 | done | |
15874c6e | 149 | |
150 | ret=$(( $ret + $? )) | |
de6b464e | 151 | else |
d95b8af3 | 152 | echo "udev requires a kernel >= 2.6.15, not started." |
153 | exit 0 | |
de6b464e | 154 | fi |
d95b8af3 | 155 | |
120a2def | 156 | ret=$(( $ret + $? )) |
6ba94d68 | 157 | [ $ret -eq 0 ] && ok || fail |
05149ed5 | 158 | exit 0 |