In message <15628.973480478@eterna.com.au> matthew green writes:
: you are forgetting the presence of the setr*id(2) calls, which introduce
: a number of other scenarios that i believe fail (in NetBSD, these are
: real system calls not library functions as in 4.4BSD).

What are those scenarios?  I'm curious since I couldn't find a good
discussion of this in the archives.

Warner