1 files changed, 125 insertions, 0 deletions
diff --git a/sys-apps/busybox/files/mdev-start.sh b/sys-apps/busybox/files/mdev-start.sh
new file mode 100755
index 000000000000..8784cd5589f6
--- /dev/null
+++ b/sys-apps/busybox/files/mdev-start.sh
@@ -0,0 +1,125 @@
+# Copyright 1999-2008 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+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 $CONSOLE with/without bootsplash before mdev creates it
+	[ -c /dev/console ] || mknod /dev/console c 5 1
+	[ -c /dev/tty1 ] || mknod /dev/tty1 c 4 1
+
+	# udevd will dup its stdin/stdout/stderr to /dev/null
+	# and we do not want a file which gets buffered in ram
+	[ -c /dev/null ] || mknod /dev/null c 1 3
+
+	# copy over any persistant things
+	if [ -d /lib/mdev/devices ] ; then
+		cp -RPp /lib/mdev/devices/* /dev 2>/dev/null
+	fi
+
+	# Not provided by sysfs but needed
+	ln -snf /proc/self/fd /dev/fd
+	ln -snf fd/0 /dev/stdin
+	ln -snf fd/1 /dev/stdout
+	ln -snf fd/2 /dev/stderr
+	[ -e /proc/kcore ] && ln -snf /proc/kcore /dev/core
+
+	# Create problematic directories
+	mkdir -p /dev/pts /dev/shm
+}
+
+mount_it_b1()
+{
+	if [ "${RC_USE_FSTAB}" = "yes" ] ; then
+		mntcmd=$(get_mount_fstab /dev)
+	else
+		unset mntcmd
+	fi
+	if [ -n "${mntcmd}" ] ; then
+		try mount -n ${mntcmd}
+	else
+		if grep -Eq "[[:space:]]+tmpfs$" /proc/filesystems ; then
+			mntcmd="tmpfs"
+		else
+			mntcmd="ramfs"
+		fi
+		# many video drivers require exec access in /dev #92921
+		try mount -n -t "${mntcmd}" -o exec,nosuid,mode=0755 mdev /dev
+	fi
+}
+mount_it_b2()
+{
+	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
+}
+mount_it()
+{
+	type fstabinfo && mount_it_b2 || mount_it_b1
+}
+
+main()
+{
+	# 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
+
+	# Selinux lovin; /selinux should be mounted by selinux-patched init
+	if [ -x /sbin/restorecon ] && [ -c /selinux/null ] ; then
+		restorecon /dev > /selinux/null
+	fi
+
+	seed_dev
+
+	# Setup hotplugging (if possible)
+	if [ -e /proc/sys/kernel/hotplug ] ; then
+		ebegin "Setting up proper hotplug agent"
+		eindent
+		einfo "Setting /sbin/mdev as hotplug agent ..."
+		echo $(find_mdev) > /proc/sys/kernel/hotplug
+		eoutdent
+		eend 0
+	fi
+
+	populate_mdev
+}
+
+main
+
+# vim:ts=4