"Erich E. Hoover" ehoover@mymail.mines.edu writes:
The attached patch fixes an issue where the Opera installer expects registry keys to return ownership information (Bug #32904), concluding the cleanup of [Get|Set]NamedSecurityInfo. This patch addresses the issue by ensuring that NULL owner and group information is never returned for registry keys and instead returns the World SID (S-1-1-0) when this information is unavailable, which is sufficient to keep the Opera installer from encountering an error. The included test shows that this behavior is essentially the case for system keys on Windows, though the Administrators SID is returned instead. Since GetNamedSecurityInfo historically returned the World SID, and several other routines use it as well) I've opted to use the World SID for now.
We should do the same as Windows unless there's a very good reason to be different.
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Alexandre Julliard