Annotation of /tags/udev-081-r4/config-udev-081-r4/udev.rc
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Revision 1211 -
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Thu Dec 2 13:03:42 2010 UTC (13 years, 5 months ago) by niro
File size: 4114 byte(s)
Thu Dec 2 13:03:42 2010 UTC (13 years, 5 months ago) by niro
File size: 4114 byte(s)
tagged udev-081-r4
1 | niro | 1211 | # starts udev |
2 | # $Header$ | ||
3 | |||
4 | seed_dev() | ||
5 | { | ||
6 | echo -e ${COLOREDSTAR}" Seeding /dev with needed nodes ..." | ||
7 | |||
8 | # not provided by sysfs but needed | ||
9 | ln -snf /proc/self/fd /dev/fd | ||
10 | ln -snf fd/0 /dev/stdin | ||
11 | ln -snf fd/1 /dev/stdout | ||
12 | ln -snf fd/2 /dev/stderr | ||
13 | ln -snf /proc/kcore /dev/core | ||
14 | ln -snf /proc/asound/oss/sndstat /dev/sndstat | ||
15 | |||
16 | # create problematic directories | ||
17 | mkdir -p /dev/{pts,shm} | ||
18 | |||
19 | return 0 | ||
20 | } | ||
21 | |||
22 | # some needed functions functions | ||
23 | populate_udev() | ||
24 | { | ||
25 | # trigger via uevents on newer kernels (>= 2.6.15) | ||
26 | if [ "$(kernel_version | sed 's:\.::g')" -gt "2614" ] | ||
27 | then | ||
28 | echo -e ${COLOREDSTAR}" Populating /dev with existing devices through uevents ..." | ||
29 | trigger_uevents | ||
30 | evaluate_retval | ||
31 | else | ||
32 | echo -e ${COLOREDSTAR}" Populating /dev with existing devices via udevstart ..." | ||
33 | /sbin/udevstart | ||
34 | evaluate_retval | ||
35 | fi | ||
36 | |||
37 | # loop until everything is finished | ||
38 | # there's gotta be a better way... | ||
39 | echo -e ${COLOREDSTAR}" Letting udev process events ..." | ||
40 | local loop=0 | ||
41 | while test -d /dev/.udev/queue | ||
42 | do | ||
43 | sleep 0.1; | ||
44 | test "${loop}" -gt 300 && break | ||
45 | loop=$((${loop} + 1)) | ||
46 | done | ||
47 | evaluate_retval | ||
48 | |||
49 | return 0 | ||
50 | } | ||
51 | |||
52 | # This works for 2.6.15 kernels or greater | ||
53 | trigger_uevents() | ||
54 | { | ||
55 | local list="" | ||
56 | local i | ||
57 | local first | ||
58 | local last | ||
59 | local default | ||
60 | |||
61 | # if you want real coldplug (with all modules being loaded for all | ||
62 | # devices in the system), uncomment out the next line. | ||
63 | #list="${lis}t $(echo /sys/bus/*/devices/*/uevent)" | ||
64 | list="${list} $(echo /sys/class/*/*/uevent)" | ||
65 | list="${list} $(echo /sys/block/*/uevent /sys/block/*/*/uevent)" | ||
66 | for i in ${list} | ||
67 | do | ||
68 | case "${i}" in | ||
69 | */device/uevent) | ||
70 | # skip followed device symlinks | ||
71 | continue | ||
72 | ;; | ||
73 | */class/mem/*|*/class/tty/*) | ||
74 | first="${first} ${i}" | ||
75 | ;; | ||
76 | */block/md*) | ||
77 | last="${last} ${i}" | ||
78 | ;; | ||
79 | */*) | ||
80 | default="${default} ${i}" | ||
81 | ;; | ||
82 | esac | ||
83 | done | ||
84 | |||
85 | # trigger the sorted events | ||
86 | for i in ${first} ${default} ${last} | ||
87 | do | ||
88 | echo "add" > "${i}" | ||
89 | done | ||
90 | } | ||
91 | |||
92 | start_udev() | ||
93 | { | ||
94 | |||
95 | # create a ramdisk for populating udev | ||
96 | echo -e ${COLOREDSTAR}"Mounting udev at /dev ..." | ||
97 | # many video drivers needed exec access | ||
98 | fstype=ramfs | ||
99 | # tmpfs was suggested by Greg Kroah-Hartman | ||
100 | kernel_supports_fs tmpfs && fstype=tmpfs | ||
101 | # mount devtmpfs if supported | ||
102 | kernel_supports_fs devtmpfs && fstype=devtmpfs | ||
103 | mount -n -t ${fstype} udev /dev -o exec,nosuid,mode=0755,size=10M | ||
104 | evaluate_retval | ||
105 | |||
106 | # if a device tarball exists load it and if it is activated | ||
107 | echo -e ${COLOREDSTAR}"Configurating system to use udev ..." | ||
108 | if [[ ${RC_DEVICE_TARBALL} = yes ]] | ||
109 | then | ||
110 | echo -e ${COLOREDSTAR}" Populating /dev with with device nodes ..." | ||
111 | tar -jxpf /lib/udev-state/devices.tar.bz2 -C /dev | ||
112 | evaluate_retval | ||
113 | fi | ||
114 | |||
115 | seed_dev | ||
116 | |||
117 | # use netlink to manage udev with newer kernels | ||
118 | if [ "$(kernel_version | sed 's:\.::g')" -gt "2614" ] | ||
119 | then | ||
120 | echo -e ${COLOREDSTAR}" Using netlink for hotplug events ..." | ||
121 | echo "" > /proc/sys/kernel/hotplug | ||
122 | |||
123 | elif [ -e /proc/sys/kernel/hotplug ] | ||
124 | then | ||
125 | echo -e ${COLOREDSTAR}" Setting /sbin/udev as hotplug agent ..." | ||
126 | echo "/sbin/udev" > /proc/sys/kernel/hotplug | ||
127 | else | ||
128 | echo -e ${COLOREDSTAR}${COLYELLOW}" Kernel was not compiled with hotplug support !" | ||
129 | fi | ||
130 | evaluate_retval | ||
131 | |||
132 | # start udev daemon | ||
133 | echo -e ${COLOREDSTAR}" Starting udevd daemon ..." | ||
134 | start-stop-daemon --start --exec /sbin/udevd -- --daemon | ||
135 | evaluate_retval | ||
136 | |||
137 | # now load udev | ||
138 | populate_udev | ||
139 | } | ||
140 | |||
141 | stop_udev() | ||
142 | { | ||
143 | echo -e ${COLOREDSTAR}" Stopping udevd daemon ..." | ||
144 | start-stop-daemon --stop --exec /sbin/udevd | ||
145 | evaluate_retval | ||
146 | |||
147 | # if requested save devices to a device tarball before halt | ||
148 | # only for kernels >=2.6 *and* udev | ||
149 | # make sure that udev is mounted but *not* devfs --> /dev/.devfsd | ||
150 | if [[ ${RC_DEVICE_TARBALL} = yes ]] && \ | ||
151 | [ -e /dev/.udev -a ! -e /dev/.devfsd -a ! -e /.bootdev ] | ||
152 | then | ||
153 | echo -e ${COLOREDSTAR}"Saving /dev device nodes ..." | ||
154 | ( cd /dev; tar -jclpf "/tmp/devices-$$.tar.bz2" * &> /dev/null ) | ||
155 | mv -f "/tmp/devices-$$.tar.bz2" /lib/udev-state/devices.tar.bz2 | ||
156 | evaluate_retval | ||
157 | fi | ||
158 | } | ||
159 | |||
160 | start_devicemanager() | ||
161 | { | ||
162 | start_udev | ||
163 | } | ||
164 | |||
165 | stop_devicemanager() | ||
166 | { | ||
167 | stop_udev | ||
168 | } |
Properties
Name | Value |
---|---|
svn:executable | * |