[RFC][PATCH v8 00/20] Implementation of RTLD_SHARED for dlmopen

[Vivek Das Mohapatra]

>> I have not yet implemented, but plan to address once this series is
>> accepted/acceptable:
>>
>>  - Sensible RTLD_GLOBAL semantics for dlmopened DSOs in non-base namespaces
>
> Could you extend what semantic and useful would to add such extension?

Right now RTLD_GLOBAL is well defined for the main namespace.

It isn't defined at all for secondary namespaces (and tends to
result in a segfault when passed to dlmopen).

I would propose something like this:

Main namespace RTLD_GLOBAL - works as at present. The new
(or newly promoted) DSO is implicitly available for symbol
resolution from/by all main namespace DSOs.

Secondary namespace RTLD_GLOBAL - the new or newly promoted
DSO is implicitly available for symbol resolution from/by
all DSOs _in that namespace_.