modules.d/95nfs/module-setup.sh

   1 #!/bin/bash
   2
   3 # called by dracut
   4 check() {
   5     # If our prerequisites are not met, fail anyways.
   6     require_any_binary rpcbind portmap || return 1
   7     require_binaries rpc.statd mount.nfs mount.nfs4 umount || return 1
   8
   9     [[ $hostonly ]] || [[ $mount_needs ]] && {
  10         for fs in ${host_fs_types[@]}; do
  11             [[ "$fs" == "nfs" ]] && return 0
  12             [[ "$fs" == "nfs3" ]] && return 0
  13             [[ "$fs" == "nfs4" ]] && return 0
  14         done
  15         return 255
  16     }
  17     return 0
  18 }
  19
  20 # called by dracut
  21 depends() {
  22     # We depend on network modules being loaded
  23     echo network
  24 }
  25
  26 # called by dracut
  27 installkernel() {
  28     instmods nfs sunrpc ipv6 nfsv2 nfsv3 nfsv4 nfs_acl nfs_layout_nfsv41_files
  29 }
  30
  31 cmdline() {
  32     local nfs_device
  33     local nfs_options
  34     local nfs_root
  35     local nfs_address
  36     local lookup
  37     local ifname
  38
  39     ### nfsroot= ###
  40     nfs_device=$(findmnt -t nfs4 -n -o SOURCE /)
  41     if [ -n "$nfs_device" ];then
  42         nfs_root="root=nfs4:$nfs_device"
  43     else
  44         nfs_device=$(findmnt -t nfs -n -o SOURCE /)
  45         [ -z "$nfs_device" ] && return
  46         nfs_root="root=nfs:$nfs_device"
  47     fi
  48     nfs_options=$(findmnt -t nfs4,nfs -n -o OPTIONS /)
  49     [ -n "$nfs_options" ] && nfs_root="$nfs_root:$nfs_options"
  50     echo "$nfs_root"
  51
  52     ### ip= ###
  53     if [[ $nfs_device = [0-9]*\.[0-9]*\.[0-9]*.[0-9]* ]] || [[ $nfs_device = \[.*\] ]]; then
  54         nfs_address="$nfs_device"
  55     else
  56         lookup=$(host $(echo ${nfs_device%%:*})| head -n1)
  57         nfs_address=${lookup##* }
  58     fi
  59     ifname=$(ip -o route get to $nfs_address | sed -n 's/.*dev \([^ ]*\).*/\1/p')
  60     if [ -e /sys/class/net/$ifname/address ] ; then
  61         ifmac=$(cat /sys/class/net/$ifname/address)
  62         printf 'ifname=%s:%s ' ${ifname} ${ifmac}
  63     fi
  64
  65     printf 'ip=%s:static\n' ${ifname}
  66 }
  67
  68 # called by dracut
  69 install() {
  70     local _i
  71     local _nsslibs
  72     inst_multiple -o portmap rpcbind rpc.statd mount.nfs \
  73         mount.nfs4 umount rpc.idmapd sed /etc/netconfig
  74     inst_multiple /etc/services /etc/nsswitch.conf /etc/rpc /etc/protocols /etc/idmapd.conf
  75
  76     if [[ $hostonly_cmdline == "yes" ]]; then
  77         local _netconf="$(cmdline)"
  78         [[ $_netconf ]] && printf "%s\n" "$_netconf" >> "${initdir}/etc/cmdline.d/95nfs.conf"
  79     fi
  80
  81     if [ -f /lib/modprobe.d/nfs.conf ]; then
  82         inst_multiple /lib/modprobe.d/nfs.conf
  83     else
  84         [ -d $initdir/etc/modprobe.d/ ] || mkdir $initdir/etc/modprobe.d
  85         echo "alias nfs4 nfs" > $initdir/etc/modprobe.d/nfs.conf
  86     fi
  87
  88     inst_libdir_file 'libnfsidmap_nsswitch.so*' 'libnfsidmap/*.so' 'libnfsidmap*.so*'
  89
  90     _nsslibs=$(sed -e '/^#/d' -e 's/^.*://' -e 's/\[NOTFOUND=return\]//' /etc/nsswitch.conf \
  91         |  tr -s '[:space:]' '\n' | sort -u | tr -s '[:space:]' '|')
  92     _nsslibs=${_nsslibs#|}
  93     _nsslibs=${_nsslibs%|}
  94
  95     inst_libdir_file -n "$_nsslibs" 'libnss_*.so*'
  96
  97     inst_hook cmdline 90 "$moddir/parse-nfsroot.sh"
  98     inst_hook pre-udev 99 "$moddir/nfs-start-rpc.sh"
  99     inst_hook cleanup 99 "$moddir/nfsroot-cleanup.sh"
 100     inst "$moddir/nfsroot.sh" "/sbin/nfsroot"
 101     inst "$moddir/nfs-lib.sh" "/lib/nfs-lib.sh"
 102     mkdir -m 0755 -p "$initdir/var/lib/nfs/rpc_pipefs"
 103     mkdir -m 0755 -p "$initdir/var/lib/rpcbind"
 104     mkdir -m 0755 -p "$initdir/var/lib/nfs/statd/sm"
 105
 106     # Rather than copy the passwd file in, just set a user for rpcbind
 107     # We'll save the state and restart the daemon from the root anyway
 108     egrep '^nfsnobody:|^rpc:|^rpcuser:' /etc/passwd >> "$initdir/etc/passwd"
 109     egrep '^nogroup:|^rpc:|^nobody:' /etc/group >> "$initdir/etc/group"
 110
 111     # rpc user needs to be able to write to this directory to save the warmstart
 112     # file
 113     chmod 770 "$initdir/var/lib/rpcbind"
 114     egrep -q '^rpc:' /etc/passwd \
 115         && egrep -q '^rpc:' /etc/group \
 116         && chown rpc.rpc "$initdir/var/lib/rpcbind"
 117     dracut_need_initqueue
 118 }