| #!/sbin/runscript |
| # Copyright 1999-2011 Gentoo Foundation |
| # Distributed under the terms of the GNU General Public License v2 |
| # $Header: /var/cvsroot/gentoo-x86/sys-apps/busybox/files/mdev.rc.1,v 1.1 2011/09/17 03:46:33 vapier Exp $ |
| |
| depend() |
| { |
| provide dev |
| need sysfs |
| } |
| |
| find_mdev() |
| { |
| if [ -x /sbin/mdev ] ; then |
| echo "/sbin/mdev" |
| else |
| echo "/bin/busybox mdev" |
| fi |
| } |
| |
| populate_mdev() |
| { |
| # populate /dev with devices already found by the kernel |
| |
| if get_bootparam "nocoldplug" ; then |
| RC_COLDPLUG="no" |
| ewarn "Skipping mdev coldplug as requested in kernel cmdline" |
| fi |
| |
| ebegin "Populating /dev with existing devices with mdev -s" |
| $(find_mdev) -s |
| eend $? |
| |
| return 0 |
| } |
| |
| seed_dev() |
| { |
| # Seed /dev with some things that we know we need |
| |
| # creating /dev/console and /dev/tty1 to be able to write |
| # to $CONSOLE with/without bootsplash before mdev creates it |
| [ -c /dev/console ] || mknod /dev/console c 5 1 |
| [ -c /dev/tty1 ] || mknod /dev/tty1 c 4 1 |
| |
| # udevd will dup its stdin/stdout/stderr to /dev/null |
| # and we do not want a file which gets buffered in ram |
| [ -c /dev/null ] || mknod /dev/null c 1 3 |
| |
| # copy over any persistant things |
| if [ -d /lib/mdev/devices ] ; then |
| cp -RPp /lib/mdev/devices/* /dev 2>/dev/null |
| fi |
| |
| # Not provided by sysfs but needed |
| ln -snf /proc/self/fd /dev/fd |
| ln -snf fd/0 /dev/stdin |
| ln -snf fd/1 /dev/stdout |
| ln -snf fd/2 /dev/stderr |
| [ -e /proc/kcore ] && ln -snf /proc/kcore /dev/core |
| |
| # Create problematic directories |
| mkdir -p /dev/pts /dev/shm |
| } |
| |
| mount_it() |
| { |
| if fstabinfo --quiet /dev ; then |
| mount -n /dev |
| else |
| # Some devices require exec, Bug #92921 |
| mount -n -t tmpfs -o "exec,nosuid,mode=0755,size=10M" mdev /dev |
| fi |
| } |
| |
| start() |
| { |
| # Setup temporary storage for /dev |
| ebegin "Mounting /dev for mdev" |
| mount_it |
| eend $? |
| |
| # Create a file so that our rc system knows it's still in sysinit. |
| # Existance means init scripts will not directly run. |
| # rc will remove the file when done with sysinit. |
| touch /dev/.rcsysinit |
| |
| seed_dev |
| |
| # Setup hotplugging (if possible) |
| if [ -e /proc/sys/kernel/hotplug ] ; then |
| ebegin "Setting up mdev as hotplug agent" |
| echo $(find_mdev) > /proc/sys/kernel/hotplug |
| eend 0 |
| fi |
| |
| populate_mdev |
| } |