The posix wrapper do not have a fixed posix standard.

[elfenpiff]

Brief feature description

During the implementation of the UnnamedSemaphore we discovered that the man page, as well as the documentation from opengroup differ. See the docu for sem_init

• https://pubs.opengroup.org/onlinepubs/9699919799/functions/sem_init.html
• https://man7.org/linux/man-pages/man3/sem_init.3.html

Those implementations have different errno codes and other posix functions may differ in their behavior.

We have to define a POSIX standard which is required for all posix wrappers, provide a link to the corresponding documentation of a specific posix wrapper and adjust the wrapper accordingly if they differ from their expected behavior.