| 1 | #!/bin/sh |
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| 2 | ######################################################################## |
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| 3 | # Begin $rc_base/init.d/udev |
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| 4 | # |
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| 5 | # Description : Udev cold-plugging script |
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| 6 | # |
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| 7 | # Authors : Zack Winkles |
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| 8 | # |
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| 9 | # Version : 00.01 |
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| 10 | # |
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| 11 | # Notes : |
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| 12 | # |
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| 13 | ######################################################################## |
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| 14 | |
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| 15 | . /etc/sysconfig/rc |
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| 16 | . ${rc_functions} |
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| 17 | |
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| 18 | # Create some things that sysfs does not, and should not export for us. Feel |
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| 19 | # free to add devices to this list. |
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| 20 | make_extra_nodes() { |
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| 21 | ln -s /proc/self/fd /dev/fd |
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| 22 | ln -s /proc/self/fd/0 /dev/stdin |
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| 23 | ln -s /proc/self/fd/1 /dev/stdout |
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| 24 | ln -s /proc/self/fd/2 /dev/stderr |
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| 25 | ln -s /proc/kcore /dev/core |
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| 26 | mkdir /dev/pts |
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| 27 | mkdir /dev/shm |
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| 28 | } |
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| 29 | |
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| 30 | case "${1}" in |
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| 31 | start) |
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| 32 | boot_mesg "Populating /dev with device nodes..." |
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| 33 | if ! grep -q '[[:space:]]sysfs' /proc/mounts; then |
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| 34 | boot_log " The SysFS filesystem could not be found. Unable to continue." |
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| 35 | echo_failure |
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| 36 | boot_mesg -n "FAILURE:\n\nUnable to create" ${FAILURE} |
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| 37 | boot_mesg -n " devices without a SysFS filesystem" |
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| 38 | boot_mesg -n "\n\nAfter you press Enter, this system" |
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| 39 | boot_mesg -n " will be halted and powered off." |
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| 40 | boot_mesg -n "\n\nPress Enter to continue..." ${INFO} |
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| 41 | boot_mesg "" ${NORMAL} |
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| 42 | read ENTER |
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| 43 | /etc/rc.d/init.d/halt stop |
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| 44 | fi |
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| 45 | |
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| 46 | # Mount a temporary file system over /dev, so that any devices |
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| 47 | # made or removed during this boot don't affect the next one. |
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| 48 | # The reason we don't write to mtab is because we don't ever |
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| 49 | # want /dev to be unavailable (such as by `umount -a'). |
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| 50 | mount -n -t tmpfs tmpfs /dev -o mode=755 |
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| 51 | if [ ${?} != 0 ]; then |
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| 52 | boot_log "Unable to mount a tmpfs onto /dev." |
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| 53 | echo_failure |
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| 54 | boot_mesg -n "FAILURE:\n\nCannot mount a tmpfs" ${FAILURE} |
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| 55 | boot_mesg -n " onto /dev, this system will be halted." |
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| 56 | boot_mesg -n "\n\nAfter you press Enter, this system" |
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| 57 | boot_mesg -n " will be halted and powered off." |
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| 58 | boot_mesg -n "\n\nPress Enter to continue..." ${INFO} |
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| 59 | boot_mesg "" ${NORMAL} |
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| 60 | read ENTER |
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| 61 | /etc/rc.d/init.d/halt stop |
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| 62 | fi |
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| 63 | |
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| 64 | # Assign udevsend to get hotplug events. udevsend can manage the whole |
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| 65 | # hotplug handling by taking over the kernel spawned event process |
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| 66 | echo /sbin/udevsend > /proc/sys/kernel/hotplug |
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| 67 | |
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| 68 | # Populate /dev with all the devices that are already available, |
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| 69 | # and save it's status so we can report failures. |
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| 70 | udevstart || failed=1 |
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| 71 | |
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| 72 | # Now, create some required files/directories/devices that sysfs |
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| 73 | # doesn't export for us. |
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| 74 | make_extra_nodes |
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| 75 | |
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| 76 | # When reporting the status, base it on the success or failure |
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| 77 | # of the `udevstart' command, since that's the most important. |
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| 78 | (exit ${failed}) |
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| 79 | evaluate_retval |
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| 80 | ;; |
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| 81 | |
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| 82 | *) |
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| 83 | echo "Usage ${0} {start}" |
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| 84 | exit 1 |
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| 85 | ;; |
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| 86 | esac |
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| 87 | |
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| 88 | # End $rc_base/init.d/udev |
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