🚀 go-pugleaf

In article <16068@auspex-gw.auspex.com> guy@Auspex.COM (Guy Harris) writes:
>SunOS 4.x "mmap()" is different from the "mmap()" originally proposed by
>Berkeley, in that if the file descriptor used in the "mmap()" is closed,
>mappings established with that FD are *not* removed.  This was done, in
>part, precisely to *avoid* having shared libraries - and "dlopen()"ed
>objects - consume file descriptors.  

One other problem it seems to me had closed file descriptors removed
mappings would have been mysterious problems when users accidently
close the wrong fd and e.g. blew away their library mapping. 
There are many user programs that simply walk through all fd's and 
close them all. Requiring these programs  to now figure out what was
an fd for a  library and not mess with it might have been a serious problem.
At the very least sounds like a support nightmare. 
Was this issue considered as well?
ron


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