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#!/bin/sh
#
# Preferred format:
# root=nfs[4]:[server:]path[:options]
#
# This syntax can come from DHCP root-path as well.
#
# Legacy format:
# root=/dev/nfs nfsroot=[server:]path[,options]
#
# In Legacy root=/dev/nfs mode, if the 'nfsroot' parameter is not given
# on the command line or is empty, the dhcp root-path is used as
# [server:]path[:options] or the default "/tftpboot/%s" will be used.
#
# If server is unspecified it will be pulled from one of the following
# sources, in order:
# static ip= option on kernel command line
# DHCP next-server option
# DHCP server-id option
# DHCP root-path option
#
# NFSv4 is only used if explicitly requested with nfs4: prefix, otherwise
# NFSv3 is used.
#
type getarg > /dev/null 2>&1 || . /lib/dracut-lib.sh
. /lib/nfs-lib.sh
# This script is sourced, so root should be set. But let's be paranoid
[ -z "$root" ] && root=$(getarg root=)
[ -z "$nfsroot" ] && nfsroot=$(getarg nfsroot=)
[ -n "$netroot" ] && oldnetroot="$netroot"
# netroot= cmdline argument must be ignored, but must be used if
# we're inside netroot to parse dhcp root-path
if [ -n "$netroot" ]; then
for n in $(getargs netroot=); do
[ "$n" = "$netroot" ] && break
done
if [ "$n" = "$netroot" ]; then
#warn "Ignoring netroot argument for NFS"
netroot=$root
fi
else
netroot=$root
fi
# LEGACY: nfsroot= is valid only if root=/dev/nfs
if [ -n "$nfsroot" ]; then
# @deprecated
warn "Argument nfsroot is deprecated and might be removed in a future release. See 'man dracut.kernel' for more information."
if [ "$(getarg root=)" != "/dev/nfs" ]; then
die "Argument nfsroot only accepted for legacy root=/dev/nfs"
fi
netroot=nfs:$nfsroot
fi
case "$netroot" in
/dev/nfs) netroot=nfs ;;
/dev/*)
if [ -n "$oldnetroot" ]; then
netroot="$oldnetroot"
else
unset netroot
fi
return
;;
# LEGACY: root=<server-ip>:/<path
[0-9]*:/* | [0-9]*\.[0-9]*\.[0-9]*[!:] | /*)
netroot=nfs:$netroot
;;
esac
# Continue if nfs
case "${netroot%%:*}" in
nfs | nfs4 | /dev/nfs) ;;
*)
if [ -n "$oldnetroot" ]; then
netroot="$oldnetroot"
else
unset netroot
fi
return
;;
esac
# Check required arguments
if nfsdomain=$(getarg rd.nfs.domain -d rd_NFS_DOMAIN); then
if [ -f /etc/idmapd.conf ]; then
sed -i -e \
"s/^[[:space:]#]*Domain[[:space:]]*=.*/Domain = $nfsdomain/g" \
/etc/idmapd.conf
fi
# and even again after the sed, in case it was not yet specified
echo "Domain = $nfsdomain" >> /etc/idmapd.conf
fi
nfsroot_to_var "$netroot"
[ "$path" = "error" ] && die "Argument nfsroot must contain a valid path!"
# Set fstype, might help somewhere
fstype=${nfs#/dev/}
# Rewrite root so we don't have to parse this ugliness later on again
netroot="$fstype:$server:$path:$options"
# If we don't have a server, we need dhcp
if [ -z "$server" ]; then
# shellcheck disable=SC2034
DHCPORSERVER="1"
fi
# Done, all good!
# shellcheck disable=SC2034
rootok=1
# Shut up init error check or make sure that block parser won't get
# confused by having /dev/nfs[4]
root="$fstype"
# shellcheck disable=SC2016
echo '[ -e $NEWROOT/proc ]' > "$hookdir"/initqueue/finished/nfsroot.sh
# rpc user needs to be able to write to this directory to save the warmstart
# file
mkdir -p /var/lib/rpcbind
chown "$(get_rpc_user):root" /var/lib/rpcbind
chmod 770 /var/lib/rpcbind
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