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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 $sysfs_dir/class ] || exit 1 |
05149ed5 AM |
30 | [ -r /proc/mounts ] || exit 1 |
31 | [ -x /sbin/udev ] || exit 1 | |
32 | [ -f /etc/udev/udev.conf ] && . /etc/udev/udev.conf | |
33 | ||
401263e1 | 34 | . /etc/rc.d/init.d/functions |
05149ed5 AM |
35 | |
36 | prog=udev | |
05149ed5 AM |
37 | bin=/sbin/udev |
38 | udevd=/sbin/udevd | |
39 | MAKEDEV="/sbin/MAKEDEV" | |
40 | ||
41 | make_extra_nodes () { | |
ba060a4b | 42 | grep '^[^#]' /etc/udev/links.conf | \ |
43 | while read type name arg1; do | |
44 | [ "$type" -a "$name" -a ! -e "$udev_root/$name" -a ! -L "/dev/$name" ] ||continue | |
45 | case "$type" in | |
46 | L) ln -s $arg1 $udev_root/$name ;; | |
47 | D) mkdir -p $udev_root/$name ;; | |
48 | M) mknod --mode=600 $udev_root/$name $arg1 ;; | |
49 | *) echo "links.conf: unparseable line ($type $name $arg1)" ;; | |
50 | esac | |
51 | done | |
44abfb53 | 52 | cp -a /lib/udev/devices/* /dev/ >/dev/null 2>&1 || : |
05149ed5 AM |
53 | } |
54 | ||
d8394a8d AM |
55 | kill_udevd() { |
56 | if [ -x /sbin/pidof ]; then | |
57 | pid=`/sbin/pidof -x udevd` | |
58 | [ -n "$pid" ] && kill $pid | |
59 | fi | |
60 | } | |
61 | ||
6ba94d68 AM |
62 | # we cannot use /usr/bin/find here |
63 | find_d () { | |
84853a2e ER |
64 | where=$1 |
65 | what=$2 | |
66 | found="" | |
67 | for f in $where/*; do | |
68 | if [ -d "$f" -a ! -L "$f" ]; then | |
6ba94d68 | 69 | if [ "$f" != "${f%%$what}" ];then |
84853a2e ER |
70 | # make sure we are at the path end |
71 | # we have no dirname and basename | |
6ba94d68 AM |
72 | rest="${f#*$what}" |
73 | [ "${rest##*/}" = "$rest" ] && found="$found $f" | |
74 | fi | |
84853a2e ER |
75 | found="$found $(find_d $f $what)" |
76 | fi | |
77 | done | |
78 | echo "$found" | |
05149ed5 AM |
79 | } |
80 | ||
6ba94d68 AM |
81 | # we cannot use /usr/bin/find here |
82 | find_f () { | |
83 | where=$1 | |
84 | what=$2 | |
85 | found="" | |
86 | for f in $where/*; do | |
87 | if [ -d "$f" -a ! -L "$f" ]; then | |
88 | found="$found $(find_f $f $what)" | |
89 | elif [ -e "$f" ]; then | |
120a2def | 90 | [ "$where/" = "${f%$what}" ] && found="$found $f" |
6ba94d68 AM |
91 | fi |
92 | done | |
120a2def | 93 | [ -n "$found" ] && echo "$found" |
05149ed5 | 94 | } |
05149ed5 | 95 | |
6ba94d68 AM |
96 | # call hotplug with the scsi devices |
97 | scsi_replay () { | |
84853a2e | 98 | HOTPLUG="/sbin/udevsend" |
6ba94d68 | 99 | |
84853a2e ER |
100 | scsi_hosts=$(find_d /sys/devices host\*) |
101 | SEQNUM=1 | |
6ba94d68 | 102 | |
84853a2e ER |
103 | for host in $scsi_hosts; do |
104 | [ -d $host ] || continue | |
105 | devs=$(find_f $host type) | |
106 | for dev in $devs;do | |
107 | [ -f $dev ] || continue | |
120a2def | 108 | DEVPATH=${dev%/type} |
84853a2e ER |
109 | DEVPATH=${DEVPATH#/sys} |
110 | /bin/env -i DEVPATH="$DEVPATH" SUBSYSTEM=scsi_device ACTION=add $HOTPLUG scsi_device | |
111 | /bin/env -i DEVPATH="$DEVPATH" ACTION=add SUBSYSTEM=scsi $HOTPLUG scsi | |
112 | done | |
113 | done | |
114 | return 0 | |
6ba94d68 | 115 | } |
05149ed5 | 116 | |
d8394a8d AM |
117 | ide_scan() { |
118 | if [ ! -d /proc/ide ]; then | |
119 | return 1 | |
120 | fi | |
121 | for i in /proc/ide/*/media; do | |
122 | read media < "$i" | |
123 | case "$media" in | |
124 | disk) | |
125 | module=ide-disk | |
126 | ;; | |
127 | cdrom) | |
128 | module=ide-cd | |
129 | ;; | |
130 | tape) | |
131 | module=ide-tape | |
132 | ;; | |
133 | floppy) | |
134 | module=ide-floppy | |
135 | ;; | |
136 | *) | |
137 | module=ide-generic | |
138 | ;; | |
139 | esac | |
140 | /sbin/modprobe $module | |
141 | done | |
142 | return 0 | |
143 | } | |
144 | ||
294ac9d6 | 145 | supported_kernel() { |
146 | case "$(uname -r)" in | |
684be8e9 | 147 | 2.[012345].*) return 1 ;; |
294ac9d6 | 148 | esac |
149 | return 0 | |
150 | } | |
151 | ||
152 | set_hotplug_handler() { | |
153 | echo /sbin/udevsend > /proc/sys/kernel/hotplug | |
154 | } | |
155 | ||
05149ed5 | 156 | export ACTION=add |
6ba94d68 AM |
157 | prog=udev |
158 | ret=0 | |
90d90678 AM |
159 | show "Starting udev" |
160 | busy | |
294ac9d6 | 161 | |
684be8e9 | 162 | if ! supported_kernel; then |
90d90678 | 163 | fail |
684be8e9 | 164 | echo "udev requires a kernel >= 2.6.x, not started." |
165 | exit 0 | |
166 | fi | |
120a2def AM |
167 | |
168 | # mount the tmpfs on ${udev_root%/}, if not already done | |
169 | LANG=C awk "\$2 == \"${udev_root%/}\" && \$3 == \"tmpfs\" { exit 1 }" /proc/mounts && { | |
84853a2e | 170 | if LANG=C fgrep -q "none ${udev_root%/}/pts " /proc/mounts; then |
5cccdef0 | 171 | PTSDIR=$(mktemp -d ${TMPDIR:-/tmp}/tmpXXXXXX) |
84853a2e ER |
172 | mount --move $udev_root/pts "$PTSDIR" |
173 | fi | |
174 | if LANG=C fgrep -q "none ${udev_root%/}/shm " /proc/mounts; then | |
5cccdef0 | 175 | SHMDIR=$(mktemp -d ${TMPDIR:-/tmp}/tmpXXXXXX) |
84853a2e ER |
176 | mount --move $udev_root/shm "$SHMDIR" |
177 | fi | |
178 | mount -n -o mode=0755 -t tmpfs none "$udev_root" | |
179 | mkdir -m 0755 $udev_root/pts | |
180 | mkdir -m 0755 $udev_root/shm | |
181 | if [ -n "$PTSDIR" ]; then | |
182 | mount --move "$PTSDIR" $udev_root/pts | |
183 | rmdir "$PTSDIR" | |
184 | fi | |
185 | if [ -n "$SHMDIR" ]; then | |
186 | mount --move "$SHMDIR" $udev_root/shm | |
187 | rmdir "$SHMDIR" | |
188 | fi | |
189 | ||
190 | ret=$(( $ret + $? )) | |
6ba94d68 | 191 | } |
120a2def | 192 | |
ec7c0939 | 193 | |
120a2def | 194 | kill_udevd > "$udev_root/null" 2>&1 |
ec7c0939 | 195 | |
120a2def | 196 | scsi_replay > "$udev_root/null" 2>&1 |
ec7c0939 | 197 | |
120a2def | 198 | ret=$(( $ret + $? )) |
ec7c0939 | 199 | |
120a2def | 200 | ide_scan > "$udev_root/null" 2>&1 |
ec7c0939 | 201 | |
d35df3ca | 202 | # Starting the hotplug events dispatcher |
203 | /sbin/udevd --daemon | |
204 | ||
205 | # Making extra nodes | |
206 | make_extra_nodes | |
207 | ||
208 | # Setting default hotplug handler | |
294ac9d6 | 209 | set_hotplug_handler |
ec7c0939 | 210 | |
d35df3ca | 211 | # Synthesizing the initial hotplug events |
b06b7ca8 | 212 | /sbin/${UDEV_STARTER} |
ec7c0939 | 213 | |
c3ea7827 | 214 | # wait for /dev to be fully populated |
215 | while [ -d /dev/.udev/queue/ ]; do | |
216 | sleep 0.2 | |
d35df3ca | 217 | udevd_timeout=$(($udevd_timeout - 1)) |
218 | if [ $udevd_timeout -eq 0 ]; then | |
219 | break | |
220 | fi | |
221 | done | |
ec7c0939 | 222 | |
d35df3ca | 223 | # Start workaround for broken Linux input subsystem |
f3702bb9 | 224 | /lib/udev/udev_input_coldplug start |
b8861549 | 225 | |
120a2def | 226 | ret=$(( $ret + $? )) |
6ba94d68 | 227 | [ $ret -eq 0 ] && ok || fail |
05149ed5 | 228 | exit 0 |