nfs-kernel-server

   1 #!/bin/sh
   2 #
   3 # nfs-kernel-server
   4 #               This shell script takes care of starting and stopping
   5 #               the kernel-mode NFS server.
   6 #
   7 # chkconfig: 345 60 20
   8 # description: NFS is a popular protocol for file sharing across TCP/IP \
   9 #              networks. This service provides NFS server functionality, \
  10 #              which is configured via the /etc/exports file.
  11 #
  12
  13 set -e
  14
  15 # What is this?
  16 DESC="NFS kernel daemon"
  17 PREFIX=/usr
  18
  19 # Exit if required binaries are missing.
  20 [ -x $PREFIX/sbin/rpc.nfsd    ] || exit 0
  21 [ -x $PREFIX/sbin/rpc.mountd  ] || exit 0
  22 [ -x $PREFIX/sbin/exportfs    ] || exit 0
  23 [ -x $PREFIX/sbin/rpc.svcgssd ] || exit 0
  24
  25 # Read config
  26 DEFAULTFILE=/etc/default/nfs-kernel-server
  27 RPCNFSDCOUNT=8
  28 RPCMOUNTDOPTS=
  29 NEED_SVCGSSD=yes
  30 RPCGSSDOPTS=
  31 RPCSVCGSSDOPTS=
  32 PROCNFSD_MOUNTPOINT=/proc/fs/nfsd
  33 if [ -f $DEFAULTFILE ]; then
  34     . $DEFAULTFILE
  35 fi
  36
  37 do_modprobe() {
  38     modprobe -q "$1" || true
  39 }
  40
  41 do_mount() {
  42     if ! grep -E -qs "$1\$" /proc/filesystems
  43     then
  44         return 1
  45     fi
  46     if ! mountpoint -q "$2"
  47     then
  48         mount -t "$1" "$1" "$2"
  49         return
  50     fi
  51     return 0
  52 }
  53
  54 # See how we were called.
  55 case "$1" in
  56   start)
  57         cd /    # daemons should have root dir as cwd
  58         # FIXME if grep -q '^/' /etc/exports
  59         if [ -f /etc/exports ]
  60         then
  61                 do_modprobe nfsd
  62                 do_mount nfsd $PROCNFSD_MOUNTPOINT || NEED_SVCGSSD=no
  63                 printf "Exporting directories for $DESC..."
  64                 $PREFIX/sbin/exportfs -r
  65                 echo "done."
  66
  67                 printf "Starting $DESC:"
  68                 if [ "$NEED_SVCGSSD" = yes ]
  69                 then
  70                     printf " svcgssd"
  71                     start-stop-daemon --start --quiet \
  72                             --make-pidfile --pidfile /var/run/rpc.svcgssd.pid \
  73                             --exec $PREFIX/sbin/rpc.svcgssd -- $RPCSVCGSSDOPTS
  74                 fi
  75
  76                 printf " nfsd"
  77                 start-stop-daemon --start --quiet \
  78                     --exec $PREFIX/sbin/rpc.nfsd -- $RPCNFSDCOUNT
  79
  80                 printf " mountd"
  81
  82                 # make sure 127.0.0.1 is a valid source for requests
  83                 ClearAddr=
  84                 if [ -f /proc/net/rpc/auth.unix.ip/channel ]
  85                 then
  86                     fgrep -qs 127.0.0.1 /proc/net/rpc/auth.unix.ip/content || {
  87                         echo "nfsd 127.0.0.1 2147483647 localhost" >/proc/net/rpc/auth.unix.ip/channel
  88                         ClearAddr=yes
  89                     }
  90                 fi
  91
  92                 if [ -x $PREFIX/bin/rpcinfo ] ; then
  93                         RPCINFO=$PREFIX/bin/rpcinfo
  94                 elif [ -x $PREFIX/sbin/rpcinfo ] ; then
  95                         RPCINFO=$PREFIX/sbin/rpcinfo
  96                 else
  97                         echo "Error: could not locate rpcinfo binary." >&2
  98                         exit 1
  99                 fi
 100                 $RPCINFO -u localhost nfs 3 >/dev/null 2>&1 ||
 101                     RPCMOUNTDOPTS="$RPCMOUNTDOPTS --no-nfs-version 3"
 102
 103                 [ -z "$ClearAddr" ] || echo "nfsd 127.0.0.1 1" >/proc/net/rpc/auth.unix.ip/channel
 104
 105                 start-stop-daemon --start --quiet \
 106                     --exec $PREFIX/sbin/rpc.mountd -- $RPCMOUNTDOPTS
 107                 echo "."
 108         else
 109                 echo "Not starting $DESC: No exports."
 110         fi
 111         ;;
 112
 113   stop)
 114         printf "Stopping $DESC: mountd"
 115         start-stop-daemon --stop --oknodo --quiet \
 116             --name rpc.mountd --user 0
 117         if [ "$NEED_SVCGSSD" = yes ]
 118         then
 119             printf " svcgssd"
 120             start-stop-daemon --stop --oknodo --quiet \
 121                     --name rpc.svcgssd --user 0
 122             rm -f /var/run/rpc.svcgssd.pid
 123         fi
 124         printf " nfsd"
 125         start-stop-daemon --stop --oknodo --quiet \
 126             --name nfsd --user 0 --signal 2
 127         echo "."
 128
 129         printf "Unexporting directories for $DESC..."
 130         $PREFIX/sbin/exportfs -au
 131         echo "done."
 132         ;;
 133
 134   reload | force-reload)
 135         printf "Re-exporting directories for $DESC..."
 136         $PREFIX/sbin/exportfs -r
 137         echo "done."
 138         ;;
 139
 140   restart)
 141         $0 stop
 142         sleep 1
 143         $0 start
 144         ;;
 145
 146   *)
 147         echo "Usage: nfs-kernel-server {start|stop|reload|force-reload|restart}"
 148         exit 1
 149         ;;
 150 esac
 151
 152 exit 0