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# NFS filesystem mounting -*- shell-script -*-
# FIXME This needs error checking
retry_nr=0
# parse nfs bootargs + launch ipconfig and nfsmount
do_nfsmount()
{
# support ip options see linux sources Documentation/nfsroot.txt
case ${IPOPTS} in
none|off)
# Do nothing
;;
""|on|any)
# Bring up device
ipconfig ${DEVICE}
;;
dhcp|bootp|rarp|both)
ipconfig -c ${IPOPTS} -d ${DEVICE}
;;
*)
ipconfig -d $IPOPTS
# grab device entry from ip option
NEW_DEVICE=${IPOPTS#*:*:*:*:*:*}
if [ "${NEW_DEVICE}" != "${IPOPTS}" ]; then
NEW_DEVICE=${NEW_DEVICE%:*}
else
# wrong parse, possibly only a partial string
NEW_DEVICE=
fi
if [ -n "${NEW_DEVICE}" ]; then
DEVICE="${NEW_DEVICE}"
fi
;;
esac
# source relevant ipconfig output
. /tmp/net-${DEVICE}.conf
# get nfs root from dhcp
if [ "x${NFSROOT}" = "xauto" ]; then
NFSROOT=${ROOTSERVER}:${ROOTPATH}
# nfsroot=[<server-ip>:]<root-dir>[,<nfs-options>]
elif [ -n "${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
[ "$quiet" != "y" ] && log_end_msg
modprobe nfs
# For DHCP
modprobe af_packet
# Default delay is around 180s
# FIXME: add usplash_write info
if [ -z "${ROOTDELAY}" ]; then
delay=180
else
delay=${ROOTDELAY}
fi
# loop until nfsmount succeds
while [ ${retry_nr} -lt ${delay} ] && [ ! -e ${rootmnt}${init} ]; do
[ ${retry_nr} -gt 0 ] && \
[ "$quiet" != "y" ] && log_begin_msg "Retrying nfs mount"
do_nfsmount
retry_nr=$(( ${retry_nr} + 1 ))
[ ! -e ${rootmnt}${init} ] && /bin/sleep 1
[ ${retry_nr} -gt 0 ] && [ "$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
}
|
