On Wed, Dec 16, 2020 at 6:02 PM Samuel Thibault <[email protected]> wrote: > > More and more packages were depending on a working sem_open() function > (scipy, pandas, matplotlib, etc.) so I "implemented" it (basically > copied over the nptl implementation), it will be in libc0.3 2.31-6 which > is getting built.
Forgive my ignorance... I thought semaphores were counted signals implemented by the OS so they can be used across processes. I don't believe libc should be in the business of sharing data across processes. In fact, regarding userland sharing, a GNU_SHARED data section in an elf binary will cause it to fail an audit or produce a finding. Processes should not be sharing data like that because a corruption in one process affects another process. Jeff
