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#!/bin/sh
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. /etc/initrd.d/00-common.sh
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is_udev() {
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[ -x "${UDEVD}" ] && [ -z "${USE_MDEV}" ] && return 0
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return 1
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}
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is_mdev() {
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if [ ! -x "${UDEVD}" ] || [ -n "${USE_MDEV}" ]; then
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return 0
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fi
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return 1
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}
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devmgr_init() {
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if is_udev; then
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good_msg "Activating udev"
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echo "${UDEVD}" > /proc/sys/kernel/hotplug
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echo "" > /sys/kernel/uevent_helper
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"${UDEVD}" --daemon --resolve-names=never && \
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udevadm trigger --action=add && \
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udevadm settle || bad_msg "udevd failed to run"
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elif is_mdev; then
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good_msg "Activating mdev"
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# Serialize hotplug events
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touch /dev/mdev.seq
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echo "${MDEVD}" > /proc/sys/kernel/hotplug
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# Ensure that device nodes are properly configured
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"${MDEVD}" -s || bad_msg "mdev -s failed"
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else
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bad_msg "Cannot find either udev or mdev"
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fi
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}
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# Terminate the device manager, this happens right before pivot_root
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devmgr_terminate() {
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if is_udev; then
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udevadm settle
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udevadm control --exit || bad_msg "Unable to terminate udevd"
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fi
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# mdev doesn't require anything, it seems
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}
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_fs_type_in_use() {
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local fs_type=${1}
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cut -d " " -f 3 < /proc/mounts | fgrep -q "${fs_type}"
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}
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mount_devfs() {
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# Use devtmpfs if enabled in kernel,
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# else tmpfs. Always run mdev just in case
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local devfs=tmpfs
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if grep -qs devtmpfs /proc/filesystems ; then
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devfs=devtmpfs
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fi
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# Options copied from /etc/init.d/udev-mount
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# should probably be kept in sync
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if ! _fs_type_in_use devtmpfs; then
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mount -t "${devfs}" -o "exec,nosuid,mode=0755,size=10M" \
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udev /dev || bad_msg "Failed to mount /dev as ${devfs}"
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fi
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# http://git.busybox.net/busybox/plain/docs/mdev.txt
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if ! _fs_type_in_use devpts; then
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mkdir -m 0755 /dev/pts
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mount -t devpts -o gid=5,mode=0620 devpts /dev/pts \
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|| bad_msg "Failed to mount /dev/pts"
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fi
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}
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device_list() {
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# Locate the cdrom device with our media on it.
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# CDROM devices
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local devices="/dev/cdroms/* /dev/ide/cd/* /dev/sr*"
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# USB Keychain/Storage
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devices="${devices} /dev/sd*"
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# IDE devices
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devices="${devices} /dev/hd*"
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# virtio devices
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devices="${devices} /dev/vd*"
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# USB using the USB Block Driver
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devices="${devices} /dev/ubd* /dev/ubd/*"
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# iSeries devices
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devices="${devices} /dev/iseries/vcd*"
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# builtin mmc/sd card reader devices
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devices="${devices} /dev/mmcblk* /dev/mmcblk*/*"
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# fallback scanning, this might scan something twice, but it's better than
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# failing to boot.
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local parts=$(awk '/([0-9]+[[:space:]]+)/{print "/dev/" $4}' \
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/proc/partitions)
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[ -e /proc/partitions ] && devices="${devices} ${parts}"
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echo ${devices}
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}
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