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Index: sys/fs/nullfs/null_vnops.c
===================================================================
--- sys/fs/nullfs/null_vnops.c (revision 254941)
+++ sys/fs/nullfs/null_vnops.c (working copy)
@@ -858,6 +858,15 @@
return (error);
}
+static int
+null_link(struct vop_link_args *ap)
+{
+
+ if (ap->a_tdvp->v_mount != ap->a_vp->v_mount)
+ return (EXDEV);
+ return (null_bypass((struct vop_generic_args *)ap));
+}
+
/*
* Global vfs data structures
*/
@@ -871,6 +880,7 @@
.vop_getwritemount = null_getwritemount,
.vop_inactive = null_inactive,
.vop_islocked = vop_stdislocked,
+ .vop_link = null_link,
.vop_lock1 = null_lock,
.vop_lookup = null_lookup,
.vop_open = null_open,
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