Machine wide IsolatedStorage stores don't have same access rights on Unix

[JeremyKuhne]

Common app data has an underlying issue #2092. If we're able to come up with a workable solution we should look at getting rights set up for Unix.

Note that the current implementation is up to the bar of the current Mono implementation for machine stores. Additionally note that we don't have a public way to set rights yet on Unix. Some tracking issues: #15176, #17540

[mellinoe]

Don't we use a machine-wide storage location in some parts of Unix crypto? Perhaps I'm mis-remembering that part. @bartonjs

[JeremyKuhne]

The parent issue (#12628) discusses the rights that need to be set and we've been doing that with P/Invoke elsewhere in the libraries.

[JeremyKuhne]

Duplicate of #2092