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1 #!/bin/sh
2 ########################################################################
3 # Begin $rc_base/init.d/udev
4 #
5 # Description : Udev cold-plugging script
6 #
7 # Authors : Zack Winkles, Alexander E. Patrakov
8 #
9 # Version : 00.02
10 #
11 # Notes :
12 #
13 ########################################################################
14
15 . /etc/sysconfig/rc
16 . ${rc_functions}
17
18 case "${1}" in
19 start)
20 boot_mesg "Populating /dev with device nodes..."
21 if ! grep -q '[[:space:]]sysfs' /proc/mounts; then
22 echo_failure
23 boot_mesg -n "FAILURE:\n\nUnable to create" ${FAILURE}
24 boot_mesg -n " devices without a SysFS filesystem"
25 boot_mesg -n "\n\nAfter you press Enter, this system"
26 boot_mesg -n " will be halted and powered off."
27 boot_mesg -n "\n\nPress Enter to continue..." ${INFO}
28 boot_mesg "" ${NORMAL}
29 read ENTER
30 /etc/rc.d/init.d/halt stop
31 fi
32
33 # Mount a temporary file system over /dev, so that any devices
34 # made or removed during this boot don't affect the next one.
35 # The reason we don't write to mtab is because we don't ever
36 # want /dev to be unavailable (such as by `umount -a').
37 mount -n -t tmpfs tmpfs /dev -o mode=755
38 if [ ${?} != 0 ]; then
39 echo_failure
40 boot_mesg -n "FAILURE:\n\nCannot mount a tmpfs" ${FAILURE}
41 boot_mesg -n " onto /dev, this system will be halted."
42 boot_mesg -n "\n\nAfter you press Enter, this system"
43 boot_mesg -n " will be halted and powered off."
44 boot_mesg -n "\n\nPress Enter to continue..." ${INFO}
45 boot_mesg "" ${NORMAL}
46 read ENTER
47 /etc/rc.d/init.d/halt stop
48 fi
49
50 # Udev handles uevents itself, so we don't need to have
51 # the kernel call out to any binary in response to them
52 echo > /proc/sys/kernel/hotplug
53
54 # Copy static device nodes to /dev
55 cp -a /lib/udev/devices/* /dev
56
57 # Start the udev daemon to continually watch for, and act on,
58 # uevents
59 /sbin/udevd --daemon
60
61 # Now traverse /sys in order to "coldplug" devices that have
62 # already been discovered
63 /sbin/udevtrigger
64
65 # Now wait for udevd to process the uevents we triggered
66 /sbin/udevsettle
67 evaluate_retval
68
69 ;;
70
71 *)
72 echo "Usage ${0} {start}"
73 exit 1
74 ;;
75 esac
76
77 # End $rc_base/init.d/udev