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SubjectRe: SCO: "thread creation is about a thousand times faster than on
Linus Torvalds writes:

> But execve() does _not_ break the sharing of filesystem data or of file
> descriptor data. Which can result in some _strange_ behaviour, but
> basically it can be meaningful and may actually be what the user wanted.

It sure is ugly that this works only when not setuid.
Unsharing on execve() would be cleaner IMHO.
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