1 files changed, 19 insertions, 0 deletions
diff --git a/sbin/functions.sh b/sbin/functions.sh
index c6ac5d6..1cb1c08 100755
--- a/sbin/functions.sh
+++ b/sbin/functions.sh
@@ -515,6 +515,25 @@ get_base_ver() {
 	echo ${ver##* }
 }
 
+# Network filesystems list for common use in rc-scripts.
+# This variable is used in is_net_fs and other places such as
+# localmount.
+NET_FS_LIST="afs cifs coda davfs gfs ncpfs nfs nfs4 ocfs2 shfs smbfs"
+
+# bool is_net_fs(path)
+#
+#   return 0 if path is the mountpoint of a networked filesystem
+#
+#   EXAMPLE:  if is_net_fs / ; then ...
+#
+is_net_fs() {
+	local fstype
+	# /proc/mounts is always accurate
+	fstype=$( sed -n -e '/^rootfs/!s:.* '"$1"' \([^ ]*\).*:\1:p' /proc/mounts )
+	[[ " ${NET_FS_LIST} " == *" ${fstype} "* ]]
+	return $?
+}
+
 # bool is_uml_sys()
 #
 #   return 0 if the currently running system is User Mode Linux