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 /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 -- $RPCNFSDCOUNT
  79
  80                 printf " mountd"
  81
  82                 # make sure 127.0.0.1 is a valid source for requests
  83                 ClearAddr=
  84                 if [ -f /proc/net/rpc/auth.unix.ip/channel ]
  85                 then
  86                     fgrep -qs 127.0.0.1 /proc/net/rpc/auth.unix.ip/content || {
  87                         echo "nfsd 127.0.0.1 2147483647 localhost" >/proc/net/rpc/auth.unix.ip/channel
  88                         ClearAddr=yes
  89                     }
  90                 fi
  91
  92                 [ -z "$ClearAddr" ] || echo "nfsd 127.0.0.1 1" >/proc/net/rpc/auth.unix.ip/channel
  93
  94                 start-stop-daemon --start --quiet \
  95                     --exec $PREFIX/sbin/rpc.mountd -- $RPCMOUNTDOPTS
  96                 echo "."
  97         else
  98                 echo "Not starting $DESC: No exports."
  99         fi
 100         ;;
 101
 102   stop)
 103         printf "Stopping $DESC: mountd"
 104         start-stop-daemon --stop --oknodo --quiet \
 105             --name rpc.mountd --user 0
 106         if [ "$NEED_SVCGSSD" = yes ]
 107         then
 108             printf " svcgssd"
 109             start-stop-daemon --stop --oknodo --quiet \
 110                     --name rpc.svcgssd --user 0
 111             rm -f /run/rpc.svcgssd.pid
 112         fi
 113         printf " nfsd"
 114         start-stop-daemon --stop --oknodo --quiet \
 115             --name nfsd --user 0 --signal 2
 116         echo "."
 117
 118         printf "Unexporting directories for $DESC..."
 119         $PREFIX/sbin/exportfs -au
 120         echo "done."
 121         ;;
 122
 123   reload | force-reload)
 124         printf "Re-exporting directories for $DESC..."
 125         $PREFIX/sbin/exportfs -r
 126         echo "done."
 127         ;;
 128
 129   restart)
 130         $0 stop
 131         sleep 1
 132         $0 start
 133         ;;
 134
 135   *)
 136         echo "Usage: nfs-kernel-server {start|stop|reload|force-reload|restart}"
 137         exit 1
 138         ;;
 139 esac
 140
 141 exit 0