Return EACCES when calling setpgid() after execve() #11467
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Return EACCES when calling setpgid() after execve()
From setpgid manpage,
EACCES - An attempt was made to change the process group ID of one
of the children of the calling process and the child had
already performed an execve(2) (setpgid(), setpgrp()).
This CL makes gVisor implement this rule and updates the exec test
suite accordingly.
TESTED: http://sponge2/7f364e8a-4f82-463e-ba62-79234c4d054d