MNT_UNION
#define MOPT_UNION { "union", 0, MNT_UNION, 0 }
if (flags & MNT_UNION) res = catopt(res, "union");
ADD_OPTION(MNT_UNION, "union");
if ((mp->mnt_flag & MNT_UNION) == 0) {
if (!nonc && (mp->mnt_flag & MNT_UNION) == 0)
mp->mnt_flag & MNT_UNION)
((*dvp)->v_mount->mnt_flag & MNT_UNION)) {
(dp->v_mount->mnt_flag & MNT_UNION)) {
if ((mp->mnt_flag & MNT_UNION) == 0 &&
(fsflags & MNT_UNION) != 0) {
fsflags &= ~MNT_UNION;
mnt_union = MNT_UNION;
fsflags |= MNT_UNION;
MNT_FLAG(MNT_UNION);
(vp->v_mount->mnt_flag & MNT_UNION)) {
{ MNT_UNION, "union" }, \
MNT_NOSUID | MNT_UNION | MNT_SUJ | \
MNT_SYNCHRONOUS | MNT_UNION | MNT_ASYNC | \
if ((mp->mnt_flag & (MNT_ACLS | MNT_NFS4ACLS | MNT_UNION)) == 0)