ed@mtxinu.COM (Ed Gould) (06/28/89)
>Separate issue(s): 1) RFS-style mapping has, I think, been implemented >by Cray, and 2) RFS also has, I think, the same notion of a "nobody" UID. There are several issues associated with UID mapping. One of the potential problems with RFS, which claims to preserve *all* of the Unix filesystem semantics, is that set-uid programs can fail to work properly unless the maps are both one-to-one and invertable. On big servers with lots of administratively unrelated clients - the situation where UID mapping is most needed - this may be a real problem if users make their own set-uid programs and store them on the server. -- Ed Gould mt Xinu, 2560 Ninth St., Berkeley, CA 94710 USA ed@mtxinu.COM +1 415 644 0146 "I'll fight them as a woman, not a lady. I'll fight them as an engineer."