Re: sem_init: pshared=0 difference between Linux and NetBSD

On Tue, Feb 03, 2026 at 10:23:46 +0100, Thomas Klausner wrote:

> Upstream found that even when pshared=0, the POSIX semaphore on NetBSD
> is shared among processes (i.e. across fork).
> 
> https://dev.gnupg.org/rE20c673e15bd772ee39f626f8203427b5f47601b7
> 
> Is this a bug in the NetBSD implementation, or are we just in the
> undefined space of the specification and it's an "implementation
> difference"?

Note, that NetBSD uses kernel semaphores (see _ksem(2) for rtfm, and
src/lib/librt/sem.c for rtfs).

-uwe