Module Name:	src
Committed By:	perseant
Date:		Fri Mar 19 21:46:26 UTC 1999

Modified Files:
	src/sys/miscfs/umapfs: umap_subr.c umap_vfsops.c umap_vnops.c
Log Message:
Apply patch from kern/5538:

Fix group mapping so members of group 0 get other group-ids mapped as well.
Avoid rename panic by checking (*this_vp_p) against NULLVP before
dereferencing it (same change as to NULLFS some time ago).