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#!/bin/bash
# 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 || return 1
[[ $hostonly ]] || [[ $mount_needs ]] && {
for fs in "${host_fs_types[@]}"; do
[[ "$fs" == "nfs" ]] && return 0
[[ "$fs" == "nfs3" ]] && return 0
[[ "$fs" == "nfs4" ]] && return 0
done
return 255
}
return 0
}
# called by dracut
depends() {
# We depend on network modules being loaded
echo network
}
# called by dracut
installkernel() {
hostonly='' instmods =net/sunrpc =fs/nfs ipv6 nfs_acl nfs_layout_nfsv41_files
}
cmdline() {
local nfs_device
local nfs_options
local nfs_root
local nfs_address
local lookup
local ifname
### nfsroot= ###
nfs_device=$(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
ifname=$(ip -o route get to $nfs_address | sed -n 's/.*dev \([^ ]*\).*/\1/p')
if [ -d /sys/class/net/$ifname/bonding ]; then
dinfo "Found bonded interface '${ifname}'. Make sure to provide an appropriate 'bond=' cmdline."
return
elif [ -e /sys/class/net/$ifname/address ] ; then
ifmac=$(cat /sys/class/net/$ifname/address)
printf 'ifname=%s:%s ' ${ifname} ${ifmac}
fi
printf 'ip=%s:static\n' ${ifname}
}
# called by dracut
install() {
local _i
local _nsslibs
inst_multiple -o portmap rpcbind rpc.statd mount.nfs \
mount.nfs4 umount rpc.idmapd sed /etc/netconfig chmod "$tmpfilesdir/rpcbind.conf"
inst_multiple /etc/services /etc/nsswitch.conf /etc/rpc /etc/protocols /etc/idmapd.conf
if [[ $hostonly_cmdline == "yes" ]]; then
local _netconf="$(cmdline)"
[[ $_netconf ]] && printf "%s\n" "$_netconf" >> "${initdir}/etc/cmdline.d/95nfs.conf"
fi
if [ -f /lib/modprobe.d/nfs.conf ]; then
inst_multiple /lib/modprobe.d/nfs.conf
else
[ -d $initdir/etc/modprobe.d/ ] || mkdir $initdir/etc/modprobe.d
echo "alias nfs4 nfs" > $initdir/etc/modprobe.d/nfs.conf
fi
inst_libdir_file 'libnfsidmap_nsswitch.so*' 'libnfsidmap/*.so' 'libnfsidmap*.so*'
_nsslibs=$(sed -e '/^#/d' -e 's/^.*://' -e 's/\[NOTFOUND=return\]//' /etc/nsswitch.conf \
| 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 "$moddir/nfsroot.sh" "/sbin/nfsroot"
inst "$moddir/nfs-lib.sh" "/lib/nfs-lib.sh"
mkdir -m 0755 -p "$initdir/var/lib/nfs/rpc_pipefs"
mkdir -m 0770 -p "$initdir/var/lib/rpcbind"
[ -d "$dracutsysrootdir/var/lib/nfs/statd/sm" ] && \
mkdir -m 0700 -p "$initdir/var/lib/nfs/statd" && \
mkdir -m 0755 -p "$initdir/var/lib/nfs/statd/sm" && \
chown -R rpcuser:rpcuser "$initdir/var/lib/nfs/statd"
[ -d "$dracutsysrootdir/var/lib/nfs/sm" ] && \
mkdir -m 0755 -p "$initdir/var/lib/nfs/sm" &&
chown -R rpcuser:rpcuser "$initdir/var/lib/nfs/sm"
# Rather than copy the passwd file in, just set a user for rpcbind
# We'll save the state and restart the daemon from the root anyway
grep -E '^nfsnobody:|^rpc:|^rpcuser:' /etc/passwd >> "$initdir/etc/passwd"
grep -E '^nogroup:|^rpc:|^nobody:' /etc/group >> "$initdir/etc/group"
# rpc user needs to be able to write to this directory to save the warmstart
# file
chmod 770 "$initdir/var/lib/rpcbind"
grep -q '^rpc:' /etc/passwd \
&& grep -q '^rpc:' /etc/group
dracut_need_initqueue
}