# NFS filesystem mounting -*- shell-script -*-

# FIXME This needs error checking

retry_nr=0

# parse nfs bootargs and mount nfs
do_nfsmount()
{

configure_networking

# get nfs root from dhcp
if [ "x${NFSROOT}" = "xauto" ]; then
# check if server ip is part of dhcp root-path
if [ "${ROOTPATH#*:}" = "${ROOTPATH}" ]; then
NFSROOT=${ROOTSERVER}:${ROOTPATH}
else
NFSROOT=${ROOTPATH}
fi

# nfsroot=[<server-ip>:]<root-dir>[,<nfs-options>]
elif [ -n "${NFSROOT}" ]; then
# nfs options are an optional arg
if [ "${NFSROOT#*,}" != "${NFSROOT}" ]; then
NFSOPTS="-o ${NFSROOT#*,}"
fi
NFSROOT=${NFSROOT%%,*}
if [ "${NFSROOT#*:}" = "$NFSROOT" ]; then
NFSROOT=${ROOTSERVER}:${NFSROOT}
fi
fi

if [ -z "${NFSOPTS}" ]; then
NFSOPTS="-o retrans=10"
fi

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

if [ ${readonly} = y ]; then
roflag="-o ro"
else
roflag="-o rw"
fi

nfsmount -o nolock ${roflag} ${NFSOPTS} ${NFSROOT} ${rootmnt}
}

# NFS root mounting
mountroot()
{
[ "$quiet" != "y" ] && log_begin_msg "Running /scripts/nfs-top"
run_scripts /scripts/nfs-top
[ "$quiet" != "y" ] && log_end_msg

modprobe nfs
# For DHCP
modprobe af_packet

wait_for_udev 10

# Default delay is around 180s
delay=${ROOTDELAY:-180}

# loop until nfsmount succeeds
do_nfsmount
while [ ${retry_nr} -lt ${delay} ] && [ ! -e ${rootmnt}${init} ]; do
[ "$quiet" != "y" ] && log_begin_msg "Retrying nfs mount"
/bin/sleep 1
do_nfsmount
retry_nr=$(( ${retry_nr} + 1 ))
[ "$quiet" != "y" ] && log_end_msg
done

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