iso/initramfs/init

#!/bin/sh

# initramfs /init (busybox ash)

### CHANGELOG ###############################################################
#
# 2007.04.24 - remove extra status message for hidden CDROM unmount message
# 2007.04.22 - hide CDROM unmount message
# 2007.03.01 - initial creation
#
#############################################################################

BOLD="\033[1m"
NORM="\033[0m"
RED="\033[31m"
GREEN="\033[32m"
YELLOW="\033[33m"
BLUE="\033[34m"
OK="${BOLD}${GREEN}OK${NORM}"
FAILED="${BOLD}${RED}FAILED${NORM}"
DONE="${BOLD}${GREEN}DONE${NORM}"

checkReturn() {
	if [ $? -ne 0 ]
	then
		echo -e $FAILED
		# could spawn a shell here for the user to fix things
	else
		echo -e $OK
	fi
}

echoDone() {
	echo -e $DONE
}

echo ""
echo -e "${BOLD}CRUX 2.4 - ${BLUE}http://crux.nu/${NORM}"
echo ""

exec >/dev/console </dev/console 2>&1

echo -e -n " ${BOLD}${BLUE}*${NORM} Mounting "
echo -e -n "${BOLD}${GREEN}/proc${NORM}"
mount -t proc proc /proc

PRINTK="`cat /proc/sys/kernel/printk`"
echo "0" > /proc/sys/kernel/printk

echo -e ", ${BOLD}${GREEN}/sys${NORM}."
mount -t sysfs sysfs /sys

echo -e -n " ${BOLD}${BLUE}*${NORM} Populating /dev via mdev... "
mdev -s
checkReturn
echo -e -n "   ${BOLD}${BLUE}*${NORM} Registering mdev as hotplug agent... "
echo "/bin/mdev" > /proc/sys/kernel/hotplug
checkReturn

echo -e -n " ${BOLD}${BLUE}*${NORM} Creating and mounting tmpfs... "
mkdir /.tmpfs
mount -t tmpfs tmpfs /.tmpfs
checkReturn

if [ -d /lib/modules ]
then
	echo -e -n " ${BOLD}${BLUE}*${NORM} Loading modules... "
	# usb
	for mod in ehci-hcd ohci-hcd uhci-hcd sl811-hcd usb-storage usbhid
	do
		modprobe $mod
	done

	# firewire
	for mod in ieee1394 ohci1394 sbp2
	do
		modprobe $mod
	done

	# sata
	for mod in ata_piix sata_promise sata_sil sata_svw sata_via sata_nv \
		sata_sx4 sata_sis sata_uli sata_qstor ahci
	do
		modprobe $mod
	done

	echoDone
else
	echo -e " ${BOLD}${YELLOW}*${NORM} No modules were found in the initial RAM filesystem."
fi

echo -e " ${BOLD}${BLUE}*${NORM} Waiting for devices to settle..."
sleep 10 # make this number configurable

echo -e " ${BOLD}${BLUE}*${NORM} Searching for the CRUX CD..."
mkdir /.tmpfs/.cdrom
CRUXCD=""
CDROM_DEVICES="`grep 'drive name:' /proc/sys/dev/cdrom/info | cut -d: -f2`"
for DEV in $CDROM_DEVICES
do
	DEV="/dev/$DEV"
	mount -r -t iso9660 $DEV /.tmpfs/.cdrom
	if [ $? -eq 0 ]
		then
		echo -e -n "   ${BOLD}${GREEN}*${NORM} Found media on $DEV"
		if [ -e /.tmpfs/.cdrom/crux-cd ]
		then
			echo ", CRUX CD."
			CRUXCD=$DEV
			ln -s $DEV /dev/cdrom
			break
		else
			echo ", but it's not the CRUX CD."
			umount /.tmpfs/.cdrom
		fi
	else
		echo -e "   ${BOLD}${YELLOW}*${NORM} No media found on $DEV."
	fi
done

echo -e -n " ${BOLD}${BLUE}*${NORM} Mounting squashfs filesystem... "
mkdir /.tmpfs/.squashfs
mount -r -t squashfs -o loop /.tmpfs/.cdrom/crux.squashfs /.tmpfs/.squashfs
checkReturn

echo -e " ${BOLD}${BLUE}*${NORM} Populating root filesystem..."
mkdir -p /newroot
echo -e -n "   ${BOLD}${BLUE}*${NORM} Mounting new root filesystem... "
mount -t tmpfs tmpfs /newroot
checkReturn
echo -e -n "   ${BOLD}${BLUE}*${NORM} Copying files from squashfs... "
cp -af /.tmpfs/.squashfs/* /newroot/
checkReturn
echo -e -n "   ${BOLD}${BLUE}*${NORM} Copying devices from rootfs... "
cp -af /dev/* /newroot/dev/
checkReturn
mkdir -p /newroot/dev/pts /newroot/cdrom

echo -e -n " ${BOLD}${BLUE}*${NORM} Unmounting squashfs filesystem... "
umount /.tmpfs/.squashfs
checkReturn
rmdir /.tmpfs/.squashfs

# even though the CDROM gets unmounted here, it gets remounted after
# the new init starts, so the message might be confusing...
#echo -e -n " ${BOLD}${BLUE}*${NORM} Unmounting CDROM... "
umount /.tmpfs/.cdrom
#checkReturn
rmdir /.tmpfs/.cdrom

echo -e -n " ${BOLD}${BLUE}*${NORM} Unmounting tmpfs... "
umount /.tmpfs
checkReturn
rmdir /.tmpfs

echo -e " ${BOLD}${BLUE}*${NORM} Switching root.\n"
echo "$PRINTK" > /proc/sys/kernel/printk
echo > /proc/sys/kernel/hotplug
umount /sys
umount /proc
exec /bin/switch_root /newroot /sbin/init

echo "Something's broken, here's a shell."
exec /bin/sh