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author | Tudor Florea <tudor.florea@enea.com> | 2014-10-16 03:05:19 +0200 |
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committer | Tudor Florea <tudor.florea@enea.com> | 2014-10-16 03:05:19 +0200 |
commit | c527fd1f14c27855a37f2e8ac5346ce8d940ced2 (patch) | |
tree | bb002c1fdf011c41dbd2f0927bed23ecb5f83c97 /meta/recipes-core/udev/udev/init | |
download | poky-c527fd1f14c27855a37f2e8ac5346ce8d940ced2.tar.gz |
initial commit for Enea Linux 4.0-140929daisy-140929
Migrated from the internal git server on the daisy-enea-point-release branch
Signed-off-by: Tudor Florea <tudor.florea@enea.com>
Diffstat (limited to 'meta/recipes-core/udev/udev/init')
-rw-r--r-- | meta/recipes-core/udev/udev/init | 133 |
1 files changed, 133 insertions, 0 deletions
diff --git a/meta/recipes-core/udev/udev/init b/meta/recipes-core/udev/udev/init new file mode 100644 index 0000000000..410a650bd1 --- /dev/null +++ b/meta/recipes-core/udev/udev/init | |||
@@ -0,0 +1,133 @@ | |||
1 | #!/bin/sh | ||
2 | |||
3 | ### BEGIN INIT INFO | ||
4 | # Provides: udev | ||
5 | # Required-Start: mountvirtfs | ||
6 | # Required-Stop: | ||
7 | # Default-Start: S | ||
8 | # Default-Stop: | ||
9 | # Short-Description: Start udevd, populate /dev and load drivers. | ||
10 | ### END INIT INFO | ||
11 | |||
12 | export TZ=/etc/localtime | ||
13 | |||
14 | [ -d /sys/class ] || exit 1 | ||
15 | [ -r /proc/mounts ] || exit 1 | ||
16 | [ -x @UDEVD@ ] || exit 1 | ||
17 | [ -f /etc/default/udev-cache ] && . /etc/default/udev-cache | ||
18 | [ -f /etc/udev/udev.conf ] && . /etc/udev/udev.conf | ||
19 | [ -f /etc/default/rcS ] && . /etc/default/rcS | ||
20 | |||
21 | readfiles () { | ||
22 | READDATA="" | ||
23 | for filename in $@; do | ||
24 | if [ -r $filename ]; then | ||
25 | while read line; do | ||
26 | READDATA="$READDATA$line" | ||
27 | done < $filename | ||
28 | fi | ||
29 | done | ||
30 | } | ||
31 | |||
32 | kill_udevd () { | ||
33 | pid=`pidof -x udevd` | ||
34 | [ -n "$pid" ] && kill $pid | ||
35 | } | ||
36 | |||
37 | case "$1" in | ||
38 | start) | ||
39 | export ACTION=add | ||
40 | # propagate /dev from /sys | ||
41 | echo "Starting udev" | ||
42 | |||
43 | # Check for requireed devtmpfs before trying to start udev and | ||
44 | # mount a no-existant fs. | ||
45 | if ! grep -q devtmpfs /proc/filesystems | ||
46 | then | ||
47 | echo "Missing devtmpfs, which is required for udev to run"; | ||
48 | echo "Halting..." | ||
49 | halt | ||
50 | fi | ||
51 | # mount the devtmpfs on /dev, if not already done | ||
52 | LANG=C awk '$2 == "/dev" && ($3 == "devtmpfs") { exit 1 }' /proc/mounts && { | ||
53 | mount -n -o mode=0755 -t devtmpfs none "/dev" | ||
54 | } | ||
55 | [ -e /dev/pts ] || mkdir -m 0755 /dev/pts | ||
56 | [ -e /dev/shm ] || mkdir -m 1777 /dev/shm | ||
57 | # the automount rule for udev needs /tmp directory available, as /tmp is a symlink | ||
58 | # to /var/tmp which in turn is a symlink to /var/volatile/tmp, we need to make sure | ||
59 | # /var/volatile/tmp directory to be available. | ||
60 | mkdir -p /var/volatile/tmp | ||
61 | |||
62 | # Cache handling. | ||
63 | # A list of files which are used as a criteria to judge whether the udev cache could be reused. | ||
64 | CMP_FILE_LIST="/proc/version /proc/cmdline /proc/devices /proc/atags" | ||
65 | if [ "$DEVCACHE" != "" ]; then | ||
66 | if [ -e $DEVCACHE ]; then | ||
67 | readfiles $CMP_FILE_LIST | ||
68 | NEWDATA="$READDATA" | ||
69 | readfiles /etc/udev/cache.data | ||
70 | OLDDATA="$READDATA" | ||
71 | if [ "$OLDDATA" = "$NEWDATA" ]; then | ||
72 | (cd /; tar xf $DEVCACHE > /dev/null 2>&1) | ||
73 | not_first_boot=1 | ||
74 | [ "$VERBOSE" != "no" ] && echo "udev: using cache file $DEVCACHE" | ||
75 | [ -e /dev/shm/udev.cache ] && rm -f /dev/shm/udev.cache | ||
76 | else | ||
77 | # Output detailed reason why the cached /dev is not used | ||
78 | if [ "$VERBOSE" != "no" ]; then | ||
79 | echo "udev: udev cache not used" | ||
80 | echo "udev: we use $CMP_FILE_LIST as criteria to judge whether the cache /dev could be resued" | ||
81 | echo "udev: olddata: $OLDDATA" | ||
82 | echo "udev: newdata: $NEWDATA" | ||
83 | fi | ||
84 | echo "$NEWDATA" > /dev/shm/udev.cache | ||
85 | fi | ||
86 | else | ||
87 | if [ "$ROOTFS_READ_ONLY" != "yes" ]; then | ||
88 | # If rootfs is not read-only, it's possible that a new udev cache would be generated; | ||
89 | # otherwise, we do not bother to read files. | ||
90 | readfiles $CMP_FILE_LIST | ||
91 | echo "$READDATA" > /dev/shm/udev.cache | ||
92 | fi | ||
93 | fi | ||
94 | fi | ||
95 | |||
96 | # make_extra_nodes | ||
97 | kill_udevd > "/dev/null" 2>&1 | ||
98 | |||
99 | # trigger the sorted events | ||
100 | echo -e '\000\000\000\000' > /proc/sys/kernel/hotplug | ||
101 | @UDEVD@ -d | ||
102 | |||
103 | udevadm control --env=STARTUP=1 | ||
104 | if [ "$not_first_boot" != "" ];then | ||
105 | udevadm trigger --action=add --subsystem-nomatch=tty --subsystem-nomatch=mem --subsystem-nomatch=vc --subsystem-nomatch=vtconsole --subsystem-nomatch=misc --subsystem-nomatch=dcon --subsystem-nomatch=pci_bus --subsystem-nomatch=graphics --subsystem-nomatch=backlight --subsystem-nomatch=video4linux --subsystem-nomatch=platform | ||
106 | (udevadm settle --timeout=3; udevadm control --env=STARTUP=)& | ||
107 | else | ||
108 | udevadm trigger --action=add | ||
109 | udevadm settle | ||
110 | fi | ||
111 | ;; | ||
112 | stop) | ||
113 | echo "Stopping udevd" | ||
114 | start-stop-daemon --stop --name udevd --quiet | ||
115 | ;; | ||
116 | restart) | ||
117 | $0 stop | ||
118 | sleep 1 | ||
119 | $0 start | ||
120 | ;; | ||
121 | status) | ||
122 | pid=`pidof -x udevd` | ||
123 | if [ -n "$pid" ]; then | ||
124 | echo "udevd (pid $pid) is running ..." | ||
125 | else | ||
126 | echo "udevd is stopped" | ||
127 | fi | ||
128 | ;; | ||
129 | *) | ||
130 | echo "Usage: $0 {start|stop|status|restart}" | ||
131 | exit 1 | ||
132 | esac | ||
133 | exit 0 | ||