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#!/bin/bash
# return value:
# 'nfs4': Only nfs4 founded
# 'nfs': nfs with version < 4 founded
# '': No nfs founded
get_nfs_type() {
local _nfs _nfs4
for fs in "${host_fs_types[@]}"; do
[[ $fs == "nfs" ]] && _nfs=1
[[ $fs == "nfs3" ]] && _nfs=1
[[ $fs == "nfs4" ]] && _nfs4=1
done
[[ "$_nfs" ]] && echo "nfs" && return
[[ "$_nfs4" ]] && echo "nfs4" && return
}
# called by dracut
check() {
# If our prerequisites are not met, fail anyways.
require_any_binary rpcbind portmap || return 1
require_binaries rpc.statd mount.nfs mount.nfs4 umount sed chmod chown || return 1
[[ $hostonly ]] || [[ $mount_needs ]] && {
[[ "$(get_nfs_type)" ]] && return 0
return 255
}
return 0
}
# called by dracut
depends() {
# We depend on network modules being loaded
echo network
}
# called by dracut
installkernel() {
hostonly=$(optional_hostonly) instmods '=net/sunrpc' '=fs/nfs' ipv6 nfs_acl nfs_layout_nfsv41_files
}
cmdline() {
local nfs_device
local nfs_options
local nfs_root
local nfs_address
local lookup
### nfsroot= ###
nfs_device=$(findmnt -t nfs4 -n -o SOURCE /)
if [ -n "$nfs_device" ]; then
nfs_root="root=nfs4:$nfs_device"
else
nfs_device=$(findmnt -t nfs -n -o SOURCE /)
[ -z "$nfs_device" ] && return
nfs_root="root=nfs:$nfs_device"
fi
nfs_options=$(findmnt -t nfs4,nfs -n -o OPTIONS /)
[ -n "$nfs_options" ] && nfs_root="$nfs_root:$nfs_options"
echo "$nfs_root"
### ip= ###
if [[ $nfs_device =~ [0-9]*\.[0-9]*\.[0-9]*.[0-9]* ]] || [[ $nfs_device =~ \[[^]]*\] ]]; then
nfs_address="${nfs_device%%:*}"
else
lookup=$(host "${nfs_device%%:*}" | grep " address " | head -n1)
nfs_address=${lookup##* }
fi
[[ $nfs_address ]] || return
ip_params_for_remote_addr "$nfs_address"
}
# called by dracut
install() {
local _nsslibs
inst_multiple -o rpc.idmapd mount.nfs mount.nfs4 umount sed /etc/netconfig chmod chown "$tmpfilesdir/rpcbind.conf"
inst_multiple -o /etc/idmapd.conf
inst_multiple -o /etc/services /etc/nsswitch.conf /etc/rpc /etc/protocols
inst_multiple -o /usr/etc/services /usr/etc/nsswitch.conf /usr/etc/rpc /usr/etc/protocols
if [[ $hostonly_cmdline == "yes" ]]; then
local _netconf
_netconf="$(cmdline)"
[[ $_netconf ]] && printf "%s\n" "$_netconf" >> "${initdir}/etc/cmdline.d/95nfs.conf"
fi
if [[ -f $dracutsysrootdir/lib/modprobe.d/nfs.conf ]]; then
inst_multiple /lib/modprobe.d/nfs.conf
else
[[ -d $initdir/etc/modprobe.d ]] || mkdir -p "$initdir"/etc/modprobe.d
echo "alias nfs4 nfs" > "$initdir"/etc/modprobe.d/nfs.conf
fi
_nsslibs=$(
cat "$dracutsysrootdir"/{,usr/}etc/nsswitch.conf 2> /dev/null \
| sed -e '/^#/d' -e 's/^.*://' -e 's/\[NOTFOUND=return\]//' \
| tr -s '[:space:]' '\n' | sort -u | tr -s '[:space:]' '|'
)
_nsslibs=${_nsslibs#|}
_nsslibs=${_nsslibs%|}
inst_libdir_file -n "$_nsslibs" 'libnss_*.so*'
inst_hook cmdline 90 "$moddir/parse-nfsroot.sh"
inst_hook pre-udev 99 "$moddir/nfs-start-rpc.sh"
inst_hook cleanup 99 "$moddir/nfsroot-cleanup.sh"
inst "$moddir/nfsroot.sh" "/sbin/nfsroot"
# For strict hostonly, only install rpcbind for NFS < 4
if [[ $hostonly_mode != "strict" ]] || [[ "$(get_nfs_type)" != "nfs4" ]]; then
inst_multiple -o portmap rpcbind rpc.statd
fi
inst "$moddir/nfs-lib.sh" "/lib/nfs-lib.sh"
mkdir -m 0755 -p "$initdir/var/lib/nfs"
mkdir -m 0755 -p "$initdir/var/lib/nfs/rpc_pipefs"
mkdir -m 0770 -p "$initdir/var/lib/rpcbind"
# use the same directory permissions as the host
[ -d "/var/lib/nfs/statd" ] && cp -a --attributes-only "$dracutsysrootdir"/var/lib/nfs/statd "${initdir}"/var/lib/nfs/ && rm -rf "${initdir}"/var/lib/nfs/statd/*
[ -d "/var/lib/nfs/statd/sm" ] && cp -a --attributes-only "$dracutsysrootdir"/var/lib/nfs/statd/sm "${initdir}"/var/lib/nfs/statd/ && rm -rf "${initdir}"/var/lib/nfs/statd/sm/*
[ -d "/var/lib/nfs/sm" ] && cp -a --attributes-only "$dracutsysrootdir"/var/lib/nfs/sm "${initdir}"/var/lib/nfs/ && rm -rf "${initdir}"/var/lib/nfs/sm/*
# Rather than copy the passwd file in, just set a user for rpcbind
# We'll save the state and restart the daemon from the root anyway
local _confdir
for _confdir in etc usr/lib; do
grep -sE '^(nfsnobody|_rpc|rpc|rpcuser):' "${dracutsysrootdir}/${_confdir}/passwd" \
>> "$initdir/${_confdir}/passwd"
grep -sE '^(nogroup|rpc|nobody):' "${dracutsysrootdir}/${_confdir}/group" \
>> "$initdir/${_confdir}/group"
done
dracut_need_initqueue
inst_libdir_file 'libnfsidmap_nsswitch.so*' 'libnfsidmap/*.so' 'libnfsidmap*.so*'
}
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