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diff --git a/sys/fs/unionfs/union_vnops.c b/sys/fs/unionfs/union_vnops.c
--- a/sys/fs/unionfs/union_vnops.c
+++ b/sys/fs/unionfs/union_vnops.c
@@ -1732,7 +1732,7 @@
}
ump = MOUNTTOUNIONFSMOUNT(ap->a_vp->v_mount);
if (ump->um_whitemode == UNIONFS_WHITE_ALWAYS || lvp != NULLVP)
- cnp->cn_flags |= DOWHITEOUT;
+ cnp->cn_flags |= (DOWHITEOUT | IGNOREWHITEOUT);
int udvp_lkflags, uvp_lkflags;
unionfs_forward_vop_start_pair(udvp, &udvp_lkflags,
uvp, &uvp_lkflags);
diff --git a/sys/sys/namei.h b/sys/sys/namei.h
--- a/sys/sys/namei.h
+++ b/sys/sys/namei.h
@@ -159,7 +159,7 @@
*/
#define RDONLY 0x00000200 /* lookup with read-only semantics */
#define ISRESTARTED 0x00000400 /* restarted namei */
-/* UNUSED 0x00000800 */
+#define IGNOREWHITEOUT 0x00000800 /* ignore whiteouts, e.g. when checking if a dir is empty */
#define ISWHITEOUT 0x00001000 /* found whiteout */
#define DOWHITEOUT 0x00002000 /* do whiteouts */
#define WILLBEDIR 0x00004000 /* new files will be dirs; allow trailing / */
diff --git a/sys/ufs/ufs/ufs_extern.h b/sys/ufs/ufs/ufs_extern.h
--- a/sys/ufs/ufs/ufs_extern.h
+++ b/sys/ufs/ufs/ufs_extern.h
@@ -59,7 +59,7 @@
int ufs_checkpath(ino_t, ino_t, struct inode *, struct ucred *, ino_t *);
void ufs_dirbad(struct inode *, doff_t, char *);
int ufs_dirbadentry(struct vnode *, struct direct *, int);
-int ufs_dirempty(struct inode *, ino_t, struct ucred *);
+int ufs_dirempty(struct inode *, ino_t, struct ucred *, int);
int ufs_extread(struct vop_read_args *);
int ufs_extwrite(struct vop_write_args *);
void ufs_makedirentry(struct inode *, struct componentname *,
diff --git a/sys/ufs/ufs/ufs_lookup.c b/sys/ufs/ufs/ufs_lookup.c
--- a/sys/ufs/ufs/ufs_lookup.c
+++ b/sys/ufs/ufs/ufs_lookup.c
@@ -1298,7 +1298,8 @@
* NB: does not handle corrupted directories.
*/
int
-ufs_dirempty(struct inode *ip, ino_t parentino, struct ucred *cred)
+ufs_dirempty(struct inode *ip, ino_t parentino, struct ucred *cred,
+ int skipwhiteout)
{
doff_t off;
struct dirtemplate dbuf;
@@ -1321,7 +1322,8 @@
if (dp->d_reclen == 0)
return (0);
/* skip empty entries */
- if (dp->d_ino == 0 || dp->d_ino == UFS_WINO)
+ if (dp->d_ino == 0 ||
+ (skipwhiteout != 0 && dp->d_ino == UFS_WINO))
continue;
/* accept only "." and ".." */
# if (BYTE_ORDER == LITTLE_ENDIAN)
diff --git a/sys/ufs/ufs/ufs_vnops.c b/sys/ufs/ufs/ufs_vnops.c
--- a/sys/ufs/ufs/ufs_vnops.c
+++ b/sys/ufs/ufs/ufs_vnops.c
@@ -1625,7 +1625,8 @@
*/
if ((tip->i_mode & IFMT) == IFDIR) {
if ((tip->i_effnlink > 2) ||
- !ufs_dirempty(tip, tdp->i_number, tcnp->cn_cred)) {
+ !ufs_dirempty(tip, tdp->i_number, tcnp->cn_cred,
+ (tcnp->cn_flags & IGNOREWHITEOUT) != 0)) {
error = ENOTEMPTY;
goto bad;
}
@@ -2281,7 +2282,8 @@
error = EINVAL;
goto out;
}
- if (!ufs_dirempty(ip, dp->i_number, cnp->cn_cred)) {
+ if (!ufs_dirempty(ip, dp->i_number, cnp->cn_cred,
+ (cnp->cn_flags & IGNOREWHITEOUT) != 0)) {
error = ENOTEMPTY;
goto out;
}

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