The vfstab_adjunct file and mount command with -S option let you specify the security attributes for mounts.
The available security attributes are:
label--the label of the files
forced privileges--the set of forced privileges to be applied to executable files in the mounted filesystem
allowed privileges--the set of allowed privileges to be applied to executable files in the mounted filesystem
label range--the range of labels that can be applied to directories and files in the mounted filesystem
MLD prefix--a substitute for .MLD. as a prefix for multilevel directories