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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 | # | |
7e0b6014 | 11 | # This needs to be run at the earliest possible point in the boot |
05149ed5 AM |
12 | # process. |
13 | # | |
14 | # Based on the udev init.d script | |
15 | # | |
7e0b6014 | 16 | # Thanks go out to the Gentoo developers for proving |
05149ed5 AM |
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 $sysfs_dir/class ] || exit 1 |
05149ed5 | 30 | [ -r /proc/mounts ] || exit 1 |
05149ed5 AM |
31 | [ -f /etc/udev/udev.conf ] && . /etc/udev/udev.conf |
32 | ||
401263e1 | 33 | . /etc/rc.d/init.d/functions |
05149ed5 AM |
34 | |
35 | prog=udev | |
05149ed5 | 36 | bin=/sbin/udev |
ab4c8ae1 | 37 | udevd=/lib/udev/udevd |
05149ed5 AM |
38 | |
39 | make_extra_nodes () { | |
ba060a4b | 40 | grep '^[^#]' /etc/udev/links.conf | \ |
41 | while read type name arg1; do | |
7e0b6014 ER |
42 | [ "$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 ;; | |
46 | M) mknod -m 600 /dev/$name $arg1 ;; | |
47 | *) echo "links.conf: unparseable line ($type $name $arg1)" ;; | |
48 | esac | |
ba060a4b | 49 | done |
584c4247 AM |
50 | [ -d /lib/udev/devices ] && cp -a /lib/udev/devices/* /dev/ >/dev/null 2>&1 || : |
51 | [ -d /lib64/udev/devices ] && cp -a /lib64/udev/devices/* /dev/ >/dev/null 2>&1 || : | |
05149ed5 AM |
52 | } |
53 | ||
d8394a8d AM |
54 | kill_udevd() { |
55 | if [ -x /sbin/pidof ]; then | |
7e0b6014 | 56 | pid=$(/sbin/pidof -x udevd) |
d8394a8d AM |
57 | [ -n "$pid" ] && kill $pid |
58 | fi | |
59 | } | |
60 | ||
294ac9d6 | 61 | set_hotplug_handler() { |
7e0b6014 | 62 | echo "" > /proc/sys/kernel/hotplug |
294ac9d6 | 63 | } |
15874c6e | 64 | |
05149ed5 | 65 | export ACTION=add |
6ba94d68 AM |
66 | prog=udev |
67 | ret=0 | |
90d90678 AM |
68 | show "Starting udev" |
69 | busy | |
294ac9d6 | 70 | |
750dbcb3 | 71 | # mount the devtmpfs on ${udev_root%/}, if not already done |
1c1306c2 | 72 | awk "\$2 == \"${udev_root%/}\" && \$3 == \"devtmpfs\" { exit 1 }" /proc/mounts && { |
7e0b6014 | 73 | |
1c1306c2 | 74 | if grep -qF "none ${udev_root%/}/pts " /proc/mounts; then |
7e0b6014 | 75 | PTSDIR=$(mktemp -d ${TMPDIR:-/tmp}/tmpXXXXXX) |
84853a2e ER |
76 | mount --move $udev_root/pts "$PTSDIR" |
77 | fi | |
7e0b6014 | 78 | |
1c1306c2 | 79 | if grep -qF "none ${udev_root%/}/shm " /proc/mounts; then |
5cccdef0 | 80 | SHMDIR=$(mktemp -d ${TMPDIR:-/tmp}/tmpXXXXXX) |
84853a2e ER |
81 | mount --move $udev_root/shm "$SHMDIR" |
82 | fi | |
7e0b6014 | 83 | |
750dbcb3 | 84 | mount -n -o mode=0755 -t devtmpfs devtmpfs "$udev_root" |
84853a2e ER |
85 | mkdir -m 0755 $udev_root/pts |
86 | mkdir -m 0755 $udev_root/shm | |
87 | if [ -n "$PTSDIR" ]; then | |
88 | mount --move "$PTSDIR" $udev_root/pts | |
89 | rmdir "$PTSDIR" | |
90 | fi | |
91 | if [ -n "$SHMDIR" ]; then | |
92 | mount --move "$SHMDIR" $udev_root/shm | |
93 | rmdir "$SHMDIR" | |
94 | fi | |
95 | ||
96 | ret=$(( $ret + $? )) | |
6ba94d68 | 97 | } |
120a2def | 98 | |
120a2def | 99 | kill_udevd > "$udev_root/null" 2>&1 |
ec7c0939 | 100 | |
7e0b6014 ER |
101 | # Start udevd daemon |
102 | $udevd --daemon | |
103 | ret=$(( $ret + $? )) | |
104 | ||
105 | # Making extra nodes | |
106 | make_extra_nodes | |
107 | ret=$(( $ret + $? )) | |
855c97b3 | 108 | |
7e0b6014 ER |
109 | if [ -f "/sys/class/tty/console/uevent" ]; then |
110 | # Setting default hotplug handler | |
855c97b3 | 111 | set_hotplug_handler |
112 | ret=$(( $ret + $? )) | |
113 | ||
d95b8af3 | 114 | # retrigger all events |
7e0b6014 | 115 | # Udev finds it's own way of making this dir |
c5ffe681 | 116 | # and making it by hand makes udevsettle |
117 | # work forever | |
118 | #mkdir -p /dev/.udev/queue | |
7e0b6014 | 119 | udevadm trigger |
15874c6e | 120 | ret=$(( $ret + $? )) |
7e0b6014 | 121 | |
d95b8af3 | 122 | # wait for the events to finish |
7e0b6014 | 123 | udevadm settle |
15874c6e | 124 | ret=$(( $ret + $? )) |
de6b464e | 125 | else |
855c97b3 | 126 | echo "Kernel too old for this udev version" |
de6b464e | 127 | fi |
d95b8af3 | 128 | |
120a2def | 129 | ret=$(( $ret + $? )) |
6ba94d68 | 130 | [ $ret -eq 0 ] && ok || fail |
05149ed5 | 131 | exit 0 |