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mako2580mako2580
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‎Makefile‎

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SYSCONFDIR ?= /etc
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LIBDIR ?= /lib
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MDEV ?= $(LIBDIR)/mdev
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INITD ?= $(SYSCONFDIR)/init.d
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all:
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install:
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install -d $(DESTDIR)$(MDEV)
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install -m 0644 mdev/* $(DESTDIR)$(MDEV)
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install -d $(DESTDIR)$(INITD)
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install -m 0755 init.d/* $(DESTDIR)$(INITD)
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install -m 0644 mdev.conf $(SYSCONFDIR)
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.PHONY: install

‎init.d/mdev‎

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#!/sbin/openrc-run
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depend() {
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provide dev
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need sysfs dev-mount
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before checkfs fsck
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keyword -vserver -lxc
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}
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start() {
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# check if udev is specified on cmd line
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if get_bootparam "udev"; then
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ewarn "Skipping mdev as udev requested in kernel cmdline"
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return 0
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fi
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ebegin "Starting busybox mdev"
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mkdir -p /dev
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# use mdev for hotplug
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echo "/sbin/mdev" > /proc/sys/kernel/hotplug
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# mdev -s will not create /dev/usb[1-9] devices with recent kernels
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# so we trigger hotplug events for usb for now
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for i in $(find /sys/devices -name 'usb[0-9]*'); do
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[ -e $i/uevent ] && echo add > $i/uevent
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done
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# create devices
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mdev -s
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eend $?
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}
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stop() {
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ebegin "Stopping busybox mdev"
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echo "" > /proc/sys/kernel/hotplug
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eend
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}
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‎mdev.conf‎

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#
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# This is a sample mdev.conf.
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#
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# Devices:
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# Syntax: %s %d:%d %s
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# devices user:group mode
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$MODALIAS=.* root:root 0660 @modprobe -q -b "$MODALIAS"
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# null does already exist; therefore ownership has to be changed with command
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null root:root 0666 @chmod 666 $MDEV
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zero root:root 0666
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grsec root:root 0660
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full root:root 0666
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random root:root 0666
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urandom root:root 0444
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hwrandom root:root 0660
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console root:tty 0600
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# load frambuffer console when first frambuffer is found
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fb0 root:video 0660 @modprobe -q -b fbcon
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vchiq root:video 0660
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fd0 root:floppy 0660
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kmem root:root 0640
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mem root:root 0640
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port root:root 0640
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ptmx root:tty 0666
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# Kernel-based Virtual Machine.
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kvm root:kvm 660
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# ram.*
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ram([0-9]*) root:disk 0660 >rd/%1
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loop([0-9]+) root:disk 0660 >loop/%1
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sd[a-z].* root:disk 0660 */lib/mdev/usbdisk_link
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hd[a-z][0-9]* root:disk 0660 */lib/mdev/ide_links
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md[0-9] root:disk 0660
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tty root:tty 0666
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tty[0-9] root:root 0600
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tty[0-9][0-9] root:tty 0660
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ttyS[0-9]* root:uucp 0660
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pty.* root:tty 0660
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vcs[0-9]* root:tty 0660
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vcsa[0-9]* root:tty 0660
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# rpi bluetooth
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#ttyAMA0 root:tty 660 @hciattach /dev/$MDEV bcm43xx 115200 noflow -
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ttyLTM[0-9] root:dialout 0660 @ln -sf $MDEV modem
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ttySHSF[0-9] root:dialout 0660 @ln -sf $MDEV modem
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slamr root:dialout 0660 @ln -sf $MDEV slamr0
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slusb root:dialout 0660 @ln -sf $MDEV slusb0
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fuse root:root 0666
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# dri device
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dri/.* root:video 0660
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card[0-9] root:video 0660 =dri/
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# alsa sound devices and audio stuff
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pcm.* root:audio 0660 =snd/
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control.* root:audio 0660 =snd/
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midi.* root:audio 0660 =snd/
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seq root:audio 0660 =snd/
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timer root:audio 0660 =snd/
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adsp root:audio 0660 >sound/
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audio root:audio 0660 >sound/
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dsp root:audio 0660 >sound/
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mixer root:audio 0660 >sound/
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sequencer.* root:audio 0660 >sound/
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SUBSYSTEM=sound;.* root:audio 0660
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# misc stuff
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agpgart root:root 0660 >misc/
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psaux root:root 0660 >misc/
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rtc root:root 0664 >misc/
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# input stuff
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event[0-9]+ root:input 0640 =input/
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mice root:input 0640 =input/
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mouse[0-9] root:input 0640 =input/
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js[0-9] root:input 0640 =input/
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ts[0-9] root:input 0600 =input/
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# v4l stuff
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vbi[0-9] root:video 0660 >v4l/
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video[0-9]+ root:video 0660 >v4l/
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# dvb stuff
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dvb.* root:video 0660 */lib/mdev/dvbdev
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# load drivers for usb devices
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usb[0-9]+ root:root 0660 */lib/mdev/usbdev
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# net devices
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net/tun[0-9]* root:netdev 0660
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net/tap[0-9]* root:netdev 0660
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# zaptel devices
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zap(.*) root:dialout 0660 =zap/%1
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dahdi!(.*) root:dialout 0660 =dahdi/%1
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dahdi/(.*) root:dialout 0660 =dahdi/%1
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# raid controllers
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cciss!(.*) root:disk 0660 =cciss/%1
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cciss/(.*) root:disk 0660 =cciss/%1
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ida!(.*) root:disk 0660 =ida/%1
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ida/(.*) root:disk 0660 =ida/%1
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rd!(.*) root:disk 0660 =rd/%1
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rd/(.*) root:disk 0660 =rd/%1
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sr0 root:cdrom 0660 @ln -sf $MDEV cdrom
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# xen stuff
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xvd[a-z] root:root 0660 */lib/mdev/xvd_links
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# fallback for any!device -> any/device
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(.*)!(.*) root:root 0660 =%1/%2

‎mdev/dvbdev‎

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#!/bin/sh
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# MDEV=dvb0.demux1 -> ADAPTER=dvb0 -> N=0
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ADAPTER=${MDEV%.*}
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N=${ADAPTER#dvb}
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# MDEV=dvb0.demux1 -> DEVB_DEV=demux1
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DVB_DEV=${MDEV#*.}
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case "$ACTION" in
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add|"")
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mkdir -p dvb/adapter${N}
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mv ${MDEV} dvb/adapter${N}/${DVB_DEV}
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;;
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remove)
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rm -f dvb/adapter${N}/${DVB_DEV}
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rmdir dvb/adapter${N} 2>/dev/null
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rmdir dvb/ 2>/dev/null
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esac

‎mdev/ide_links‎

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#!/bin/sh
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[ -f /proc/ide/$MDEV/media ] || exit
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media=`cat /proc/ide/$MDEV/media`
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for i in $media $media[0-9]* ; do
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if [ "`readlink $i 2>/dev/null`" = $MDEV ] ; then
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LINK=$i
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break
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fi
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done
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# link exist, remove if necessary and exit
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if [ "$LINK" ] ; then
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[ "$ACTION" = remove ] && rm $LINK
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exit
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fi
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# create a link
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num=`ls $media[0-9]* 2>/dev/null | wc -l`
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ln -sf $MDEV "$media`echo $num`"
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[ -e "$media" ] || ln -sf $MDEV "$media"
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‎mdev/usbdev‎

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#!/bin/sh
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# mdev -s will not set SUBSYSTEM or DEVNAME so we trigger a hotplug event
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if [ "$SUBSYSTEM" != "usb" ] || [ "$DEVTYPE" != "usb_device" ]; then
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uev=/sys/bus/usb/devices/$MDEV/uevent
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[ -e "$uev" ] && echo "add" > "$uev"
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exit
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fi
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[ -n "$DEVNAME" ] || exit
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case "$ACTION" in
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add)
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mkdir -p "${DEVNAME%/*}"
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mv $MDEV $DEVNAME
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# autoload driver
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for i in /sys/$DEVPATH/*/modalias; do
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[ -e "$i" ] && echo $i
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done | xargs sort -u | xargs modprobe -a 2>/dev/null
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;;
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remove)
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rm $DEVNAME
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;;
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esac
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‎mdev/usbdisk_link‎

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#!/bin/sh
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# NOTE: since mdev -s only provide $MDEV, don't depend on any hotplug vars.
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current=$(readlink usbdisk)
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if [ "$current" = "$MDEV" ] && [ "$ACTION" = "remove" ]; then
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rm -f usbdisk usba1
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fi
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[ -n "$current" ] && exit
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if [ -e /sys/block/$MDEV ]; then
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SYSDEV=$(readlink -f /sys/block/$MDEV/device)
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# if /sys device path contains '/usb[0-9]' then we assume its usb
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# also, if its an usb without partitions we require FAT
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if [ "${SYSDEV##*/usb[0-9]}" != "$SYSDEV" ]; then
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# do not create link if there is not FAT
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dd if=/dev/$MDEV bs=512 count=1 2>/dev/null | strings | grep FAT >/dev/null || exit 0
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ln -sf $MDEV usbdisk
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# keep this for compat. people have it in fstab
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ln -sf $MDEV usba1
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fi
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elif [ -e /sys/block/*/$MDEV ] ; then
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PARENT=$(dirname /sys/block/*/$MDEV)
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SYSDEV=$(readlink -f $PARENT/device)
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if [ "${SYSDEV##*/usb[0-9]}" != "$SYSDEV" ]; then
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ln -sf $MDEV usbdisk
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# keep this for compat. people have it in fstab
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ln -sf $MDEV usba1
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fi
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fi
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‎mdev/xvd_links‎

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#!/bin/sh
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[ -f /sys/block/$MDEV/capability ] || exit
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caps="0x`cat /sys/block/$MDEV/capability`"
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if [ $(($caps & 8)) -gt 0 ]; then
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case $ACTION in
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add|"") ln -sf $MDEV cdrom ;;
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remove) [ "`readlink cdrom 2>/dev/null`" = $MDEV ] && rm -f cdrom ;;
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esac
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fi

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