#!/bin/sh

# Jails serving NFS need 'allow.nfsd' option.

: ${nfsuserd_cache_size:='256'}
: ${nfsuserd_num_servers:='4'}
: ${nfsuserd_cache_timeout:='1'}
: ${nfsd_srvmaxio:='1048576'}

nfs_root=/share
nfs_dataset="${state_dataset}/nfs"

# Create ZFS dataset for NFS share.
create_dataset -o "mountpoint=${nfs_root}" "${nfs_dataset}"

# Allow NFSv4 ACLs to propagate.
zfs set aclinherit=passthrough aclmode=passthrough "$nfs_dataset"

# Create nfs service principal and keytab.
add_principal -nokey -x "containerdn=${services_basedn}" "nfs/${fqdn}"
ktadd -k "${keytab_dir}/host.keytab" "nfs/${fqdn}"

if [ "$BOXCONF_VIRTUALIZATION_TYPE" != jail ]; then
  set_sysctl \
    vfs.nfsd.issue_delegations=1 \
    vfs.nfsd.enable_locallocks=0
fi

sysrc -v \
  nfs_server_managegids=YES \
  nfsuserd_enable=YES \
  nfsuserd_flags="-usermax ${nfsuserd_cache_size} -usertimeout ${nfsuserd_cache_timeout} ${nfsuserd_num_servers}" \
  gssd_enable=YES \
  nfs_server_enable=YES \
  nfs_server_flags='-t' \
  nfs_server_maxio="$nfsd_srvmaxio" \
  nfsv4_server_only=YES \
  mountd_enable=YES \
  mountd_flags='-R -S'

# Our krb5.conf assumes MIT Kerberos, but the gssd in base uses the base
# Heimdal kerberos, which doesnt support %{euid} expansion. So we must
# override the keytab path with an environment variable.
sysrc -v gssd_env="KRB5_KTNAME=${keytab_dir}/host.keytab"

install_template -m 0644 /etc/exports

for service in gssd nfsuserd mountd nfsd; do
  service "$service" status || service "$service" start
done