+
+#
+# Parse the fstab file, and determine whether we need idmapd and gssd. (The
+# /etc/defaults settings, if any, will override our autodetection.) This code
+# is partially adapted from the mountnfs.sh script in the sysvinit package.
+#
+AUTO_NEED_IDMAPD=no
+AUTO_NEED_GSSD=no
+
+if [ -f /etc/fstab ]; then
+ exec 9<&0 </etc/fstab
+
+ while read DEV MTPT FSTYPE OPTS REST
+ do
+ if [ "$FSTYPE" = "nfs4" ]; then
+ AUTO_NEED_IDMAPD=yes
+ fi
+ case "$OPTS" in
+
+ sec=krb5|*,sec=krb5|sec=krb5,*|*,sec=krb5i,*|sec=krb5i|*,sec=krb5i|sec=krb5i,*|*,sec=krb5i,*|sec=krb5p|*,sec=krb5p|sec=krb5p,*|*,sec=krb5p,*)
+ AUTO_NEED_GSSD=yes
+ ;;
+ esac
+ done
+
+ exec 0<&9 9<&-
+fi
+
+#
+# We also need idmapd if we run an NFSv4 server. It's fairly difficult
+# to autodetect whether there are NFSv4 exports or not, and idmapd is not a
+# particularily heavy daemon, so we auto-enable it if we find an /etc/exports
+# file. This does not mean that there are NFSv4 or other mounts active (or
+# even that nfs-kernel-server is installed), but it matches what the "start"
+# condition in nfs-kernel-server's init script does, which has a value in
+# itself.
+#
+if [ -f /etc/exports ] && grep -q '^[[:space:]]*[^#]*/' /etc/exports; then
+ AUTO_NEED_IDMAPD=yes
+fi
+
+case "$NEED_STATD" in
+ yes|no)
+ ;;
+ *)
+ NEED_STATD=yes
+ ;;
+esac
+
+case "$NEED_IDMAPD" in
+ yes|no)
+ ;;
+ *)
+ NEED_IDMAPD=$AUTO_NEED_IDMAPD
+ ;;
+esac
+
+case "$NEED_GSSD" in
+ yes|no)
+ ;;
+ *)
+ NEED_GSSD=$AUTO_NEED_GSSD
+ ;;
+esac
+
+do_modprobe() {
+ if [ -x /sbin/modprobe -a -f /proc/modules ]
+ then
+ modprobe -q "$1" || true
+ fi
+}
+
+do_mount() {
+ if ! grep -E -qs "$1\$" /proc/filesystems
+ then
+ return 1
+ fi
+ if ! mountpoint -q "$2"
+ then
+ mount -t "$1" "$1" "$2"
+ return
+ fi
+ return 0
+}
+
+do_umount() {
+ if mountpoint -q "$1"
+ then
+ umount "$1"
+ fi
+ return 0
+}