[RFC] 4950302: (fs spec) Random write produces different results on Linux vs Windows from same .class

[Florian Weimer]

* David Lloyd:

> If toggling the mode is unacceptable, an
> also-not-so-great-but-should-work alternative workaround would be to
> open `/proc/self/fd/<fdnum>` and write to that (basically this works
> more or less like dup() but doesn't share file offset and flags).
> Then you're not toggling file modes - though it will of course fail if
> you run out of file descriptors.

And you cannot close the alternate descriptor because doing so would
release advisory locks on the first descriptor (as required by POSIX).

Thanks,
Florian