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f3f65e73a3
git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@9552 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689
91 lines
2.7 KiB
Bash
91 lines
2.7 KiB
Bash
#!/bin/sh
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# Begin $RC_BASE/init.d/udev
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### BEGIN INIT INFO
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# Provides: udev
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# Required-Start:
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# Should-Start: modules
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# Required-Stop:
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# Should-Stop:
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# Default-Start: S
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# Default-Stop:
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# Short-Description: Populated /dev with device nodes.
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# Description: Mounts a tempfs on /dev and starts the udevd daemon.
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# Device nodes are created as defined by udev.
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# X-LFS-Provided-By: LFS
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### END INIT INFO
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. /lib/lsb/init-functions
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MESSAGE="Populating /dev with device nodes..."
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case "${1}" in
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start)
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if ! grep -q '[[:space:]]sysfs' /proc/mounts; then
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echo_failure
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boot_mesg -n "FAILURE:\n\nUnable to create" ${FAILURE}
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boot_mesg -n " devices without a SysFS filesystem"
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boot_mesg -n "\n\nAfter you press Enter, this system"
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boot_mesg -n " will be halted and powered off."
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boot_mesg -n "\n\nPress Enter to continue..." ${INFO}
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boot_mesg "" ${NORMAL}
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$FAILURE_ACTION
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/etc/rc.d/init.d/halt stop
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fi
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# If not using DEVTMPFS mount a temporary file system over
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# /dev, so that any devices made or removed during this boot
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# don't affect the next one. The reason we don't write to mtab
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# is because we don't ever want /dev to be unavailable (such as
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# by `umount -a').
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if ! mountpoint /dev > /dev/null; then
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mount -n -t tmpfs tmpfs /dev -o mode=755
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fi
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if [ ${?} -ne 0 ]; then
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echo_failure
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boot_mesg -n "FAILURE:\n\nCannot mount a tmpfs" ${FAILURE}
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boot_mesg -n " onto /dev, this system will be halted."
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boot_mesg -n "\n\nAfter you press Enter, this system"
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boot_mesg -n " will be halted and powered off."
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boot_mesg -n "\n\nPress Enter to continue..." ${INFO}
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boot_mesg "" ${NORMAL}
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$FAILURE_ACTION
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/etc/rc.d/init.d/halt stop
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fi
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# Create a symlink for POSIX shared memory
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ln -s /run/shm /dev/shm
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# Udev handles uevents itself, so we don't need to have
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# the kernel call out to any binary in response to them
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# This is a failsafe and should be done in kernel config
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echo > /proc/sys/kernel/hotplug
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# Copy the only static device node that Udev >= 155 doesn't
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# handle to /dev (handled by default with DEVTMPFS)
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if [ ! -f /dev/null ]; then
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cp -a /lib/udev/devices/null /dev
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fi
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# Start the udev daemon to continually watch for, and act on,
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# uevents
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/sbin/udevd --daemon
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# Now traverse /sys in order to "coldplug" devices that have
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# already been discovered
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/sbin/udevadm trigger --action=add --type=subsystems
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/sbin/udevadm trigger --action=add --type=devices
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# Now wait for udevd to process the uevents we triggered
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/sbin/udevadm settle
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evaluate_retval standard
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;;
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*)
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echo "Usage ${0} {start}"
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exit 1
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;;
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esac
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# End $RC_BASE/init.d/udev
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