debian/nfs-common.init

   1 #!/bin/sh
   2 #
   3 # nfs-common    This shell script takes care of starting and stopping
   4 #               common daemons required for NFS clients and servers.
   5 #
   6 # chkconfig: 345 20 80
   7 # description: NFS is a popular protocol for file sharing across \
   8 #              TCP/IP networks. This service provides NFS file \
   9 #              locking functionality.
  10 #
  11
  12 set -e
  13
  14 # What is this?
  15 DESC="NFS common utilities"
  16
  17 # Read config
  18 DEFAULTFILE=/etc/default/nfs-common
  19 PREFIX=
  20 NEED_LOCKD=
  21 NEED_IDMAPD=
  22 IDMAPD_PIDFILE=/var/run/rpc.idmapd.pid
  23 NEED_GSSD=
  24 GSSD_PIDFILE=/var/run/rpc.gssd.pid
  25 PIPEFS_MOUNTPOINT=/var/lib/nfs/rpc_pipefs
  26 RPCGSSDOPTS=
  27 if [ -f $DEFAULTFILE ]; then
  28     . $DEFAULTFILE
  29 fi
  30
  31 # Determine whether lockd daemon is required.
  32 case "$NEED_LOCKD" in
  33 yes|no) ;;
  34 *)  case `uname -r` in
  35     '' | [01].* | 2.[0123].* )
  36         # Older kernels may or may not need a lockd daemon.
  37         # We must assume they do, unless we can prove otherwise.
  38         # (A false positive here results only in a harmless message.)
  39         NEED_LOCKD=yes
  40         if test -f /proc/ksyms
  41         then
  42             grep -q lockdctl /proc/ksyms || NEED_LOCKD=no
  43         fi
  44         ;;
  45
  46     *)  # Modern kernels (>= 2.4) start a lockd thread automatically.
  47         NEED_LOCKD=no
  48         ;;
  49     esac
  50     ;;
  51 esac
  52
  53 #
  54 # Parse the fstab file, and determine whether we need idmapd and gssd. (The
  55 # /etc/defaults settings, if any, will override our autodetection.) This code
  56 # is partially adapted from the mountnfs.sh script in the sysvinit package.
  57 #
  58 AUTO_NEED_IDMAPD=no
  59 AUTO_NEED_GSSD=no
  60
  61 exec 9<&0 </etc/fstab
  62
  63 while read DEV MTPT FSTYPE OPTS REST
  64 do
  65     if [ "$FSTYPE" = "nfs4" ]; then
  66         AUTO_NEED_IDMAPD=yes
  67     fi
  68     case "$OPTS" in
  69         sec=krb5|*,sec=krb5|sec=krb5,*|*,sec=krb5i,*|sec=krb5i|*,sec=krb5i|sec=krb5i,*|*,sec=krb5i,*|sec=krb5p|*,sec=krb5p|sec=krb5p,*|*,sec=krb5p,*)
  70             AUTO_NEED_GSSD=yes
  71         ;;
  72     esac
  73 done
  74
  75 exec 0<&9 9<&-
  76
  77 case "$NEED_IDMAPD" in
  78     yes|no)
  79         ;;
  80     *)
  81         NEED_IDMAPD=$AUTO_NEED_IDMAPD
  82         ;;
  83 esac
  84
  85 case "$NEED_GSSD" in
  86     yes|no)
  87         ;;
  88     *)
  89         NEED_GSSD=$AUTO_NEED_GSSD
  90         ;;
  91 esac
  92
  93 # Exit if required binaries are missing.
  94 [ -x $PREFIX/sbin/rpc.statd ] || exit 0
  95 [ -x $PREFIX/sbin/rpc.lockd ] || [ "$NEED_LOCKD"  = no ] || exit 0
  96 [ -x /usr/sbin/rpc.idmapd   ] || [ "$NEED_IDMAPD" = no ] || exit 0
  97 [ -x /usr/sbin/rpc.gssd     ] || [ "$NEED_GSSD"   = no ] || exit 0
  98
  99 do_modprobe() {
 100     modprobe -q "$1" || true
 101 }
 102
 103 do_mount() {
 104     if ! grep -E -qs "$1\$" /proc/filesystems
 105     then
 106         return 1
 107     fi
 108     if ! mountpoint -q "$2"
 109     then
 110         mount -t "$1" "$1" "$2"
 111         return
 112     fi
 113     return 0
 114 }
 115
 116 do_umount() {
 117     if mountpoint -q "$1"
 118     then
 119         umount "$1"
 120     fi
 121     return 0
 122 }
 123
 124 # See how we were called.
 125 case "$1" in
 126   start)
 127         cd /    # daemons should have root dir as cwd
 128         printf "Starting $DESC:"
 129         printf " statd"
 130         start-stop-daemon --start --oknodo --quiet \
 131             --exec $PREFIX/sbin/rpc.statd -- $STATDOPTS
 132         if [ "$NEED_LOCKD" = yes ]
 133         then
 134             printf " lockd"
 135             start-stop-daemon --start --oknodo --quiet \
 136                 --exec $PREFIX/sbin/rpc.lockd  || true
 137         fi
 138         if [ "$NEED_IDMAPD" = yes ] || [ "$NEED_GSSD" = yes ]
 139         then
 140             do_modprobe nfs
 141             do_modprobe nfs4
 142             if do_mount rpc_pipefs $PIPEFS_MOUNTPOINT
 143             then
 144                 if [ "$NEED_IDMAPD" = yes ]
 145                 then
 146                     printf " idmapd"
 147                     start-stop-daemon --start --oknodo --quiet \
 148                             --make-pidfile --pidfile $IDMAPD_PIDFILE \
 149                             --exec /usr/sbin/rpc.idmapd
 150                 fi
 151                 if [ "$NEED_GSSD" = yes ]
 152                 then
 153                     do_modprobe rpcsec_gss_krb5
 154                     printf " gssd"
 155                     start-stop-daemon --start --oknodo --quiet \
 156                             --make-pidfile --pidfile $GSSD_PIDFILE \
 157                             --exec /usr/sbin/rpc.gssd -- $RPCGSSDOPTS
 158                 fi
 159             fi
 160         fi
 161         echo "."
 162         ;;
 163
 164   stop)
 165         printf "Stopping $DESC:"
 166         if [ "$NEED_GSSD" = yes ]
 167         then
 168             printf " gssd"
 169             start-stop-daemon --stop --oknodo --quiet \
 170                     --name rpc.gssd
 171             rm -f $GSSD_PIDFILE
 172         fi
 173         if [ "$NEED_IDMAPD" = yes ]
 174         then
 175             printf " idmapd"
 176             start-stop-daemon --stop --oknodo --quiet \
 177                 --name rpc.idmapd
 178             rm -f $IDMAPD_PIDFILE
 179         fi
 180         if [ "$NEED_LOCKD" = yes ]
 181         then
 182             printf " lockd"
 183             start-stop-daemon --stop --oknodo --quiet \
 184                 --name rpc.lockd || true
 185         else
 186             pkill -KILL -u root -x lockd || true
 187         fi
 188         printf " statd"
 189         start-stop-daemon --stop --oknodo --quiet \
 190             --name rpc.statd
 191         do_umount $PIPEFS_MOUNTPOINT 2>/dev/null || true
 192         echo "."
 193         ;;
 194
 195   status)
 196         if ! pidof rpc.statd >/dev/null
 197         then
 198             echo "rpc.statd not running"
 199             exit 3
 200         fi
 201
 202         if [ "$NEED_GSSD" = yes ]
 203         then
 204             if [ ! -f "$GSSD_PIDFILE" ] || [ "$( pidof rpc.gssd )" != "$( cat $GSSD_PIDFILE )"]
 205             then
 206                 echo "rpc.statd running, but rpc.gssd halted"
 207                 exit 3
 208             fi
 209         fi
 210
 211         if [ "$NEED_LOCKD" = yes ]
 212         then
 213             if ! pidof rpc.lockd >/dev/null
 214             then
 215                 echo "rpc.statd running, but rpc.lockd halted"
 216                 exit 3
 217             fi
 218         fi
 219
 220         if [ "$NEED_IDMAPD" = yes ]
 221         then
 222             if [ ! -f "$IDMAPD_PIDFILE" ] || [ "$( pidof rpc.idmapd )" != "$( cat $IDMAPD_PIDFILE )"]
 223             then
 224                 echo "rpc.statd running, but rpc.idmapd halted"
 225                 exit 3
 226             fi
 227         fi
 228
 229         echo "rpc.statd running"
 230         exit 0
 231         ;;
 232
 233   restart | force-reload)
 234         $0 stop
 235         sleep 1
 236         $0 start
 237         ;;
 238
 239   *)
 240         echo "Usage: nfs-common {start|stop|restart}"
 241         exit 1
 242         ;;
 243 esac
 244
 245 exit 0