# Local filesystem mounting -*- shell-script -*-

pre_mountroot()
{
[ "$quiet" != "y" ] && log_begin_msg "Running /scripts/local-top"
run_scripts /scripts/local-top
[ "$quiet" != "y" ] && log_end_msg

# Don't wait for a root device that doesn't have a corresponding
# device in /dev (ie, mtd0)
if [ "${ROOT#/dev}" = "${ROOT}" ]; then
return
fi

while [ -z "${FSTYPE}" ]; do
FSTYPE=$(wait-for-root "${ROOT}" ${ROOTDELAY:-30})

# Load ubi with the correct MTD partition and return since
# fstype doesn't work with a char device like ubi.
if [ -n "$UBIMTD" ]; then
modprobe ubi mtd=$UBIMTD
return
fi

# Run failure hooks, hoping one of them can fix up the system
# and we can restart the wait loop. If they all fail, abort
# and move on to the panic handler and shell.
if [ -z "${FSTYPE}" ] && ! try_failure_hooks; then
break
fi
done

# We've given up, but we'll let the user fix matters if they can
while [ -z "${FSTYPE}" -a ! -e "${ROOT}" ]; do
# give hint about renamed root
case "${ROOT}" in
/dev/hd*)
suffix="${ROOT#/dev/hd}"
major="${suffix%[[:digit:]]}"
major="${major%[[:digit:]]}"
if [ -d "/sys/block/sd${major}" ]; then
echo "WARNING bootdevice may be renamed. Try root=/dev/sd${suffix}"
fi
;;
/dev/sd*)
suffix="${ROOT#/dev/sd}"
major="${suffix%[[:digit:]]}"
major="${major%[[:digit:]]}"
if [ -d "/sys/block/hd${major}" ]; then
echo "WARNING bootdevice may be renamed. Try root=/dev/hd${suffix}"
fi
;;
esac
echo "Gave up waiting for root device. Common problems:"
echo " - Boot args (cat /proc/cmdline)"
echo " - Check rootdelay= (did the system wait long enough?)"
echo " - Check root= (did the system wait for the right device?)"
echo " - Missing modules (cat /proc/modules; ls /dev)"
panic "ALERT! ${ROOT} does not exist. Dropping to a shell!"
done
}

mountroot()
{
pre_mountroot

# Get the root filesystem type if not set
if [ -z "${ROOTFSTYPE}" ]; then
[ -n "${FSTYPE}" ] || FSTYPE=$(blkid -s TYPE -o value "${ROOT}")
ROOTFSTYPE="${FSTYPE}"
else
FSTYPE=${ROOTFSTYPE}
fi

[ "$quiet" != "y" ] && log_begin_msg "Running /scripts/local-premount"
run_scripts /scripts/local-premount
[ "$quiet" != "y" ] && log_end_msg

if [ "${readonly}" = "y" ] && \
[ -z "$LOOP" ]; then
roflag=-r
else
roflag=-w
fi

# FIXME This has no error checking
[ -n "${FSTYPE}" ] && modprobe ${FSTYPE}

# FIXME This has no error checking
# Mount root
mount ${roflag} ${FSTYPE:+-t ${FSTYPE} }${ROOTFLAGS} ${ROOT} ${rootmnt}
mountroot_status="$?"
if [ "$LOOP" ]; then
if [ "$mountroot_status" != 0 ]; then
if [ ${FSTYPE} = ntfs ] || [ ${FSTYPE} = vfat ]; then
panic "
Could not mount the partition ${ROOT}.
This could also happen if the file system is not clean because of an operating
system crash, an interrupted boot process, an improper shutdown, or unplugging
of a removable device without first unmounting or ejecting it. To fix this,
simply reboot into Windows, let it fully start, log in, run 'chkdsk /r', then
gracefully shut down and reboot back into Windows. After this you should be
able to reboot again and resume the installation.
(filesystem = ${FSTYPE}, error code = $mountroot_status)
"
fi
fi

mkdir -p /host
mount -o move ${rootmnt} /host

while [ ! -e "/host/${LOOP#/}" ]; do
panic "ALERT! /host/${LOOP#/} does not exist. Dropping to a shell!"
done

# Get the loop filesystem type if not set
if [ -z "${LOOPFSTYPE}" ]; then
eval $(fstype < "/host/${LOOP#/}")
else
FSTYPE="${LOOPFSTYPE}"
fi
if [ "$FSTYPE" = "unknown" ] && [ -x /sbin/blkid ]; then
FSTYPE=$(/sbin/blkid -s TYPE -o value "/host/${LOOP#/}")
[ -z "$FSTYPE" ] && FSTYPE="unknown"
fi

if [ ${readonly} = y ]; then
roflag=-r
else
roflag=-w
fi

# FIXME This has no error checking
modprobe loop
modprobe ${FSTYPE}

# FIXME This has no error checking
mount ${roflag} -o loop -t ${FSTYPE} ${LOOPFLAGS} "/host/${LOOP#/}" ${rootmnt}

if [ -d ${rootmnt}/host ]; then
mount -o move /host ${rootmnt}/host
fi
fi

[ "$quiet" != "y" ] && log_begin_msg "Running /scripts/local-bottom"
run_scripts /scripts/local-bottom
[ "$quiet" != "y" ] && log_end_msg
}