(define-call "setuid" int minusp (uid uid-t))
(define-call "getegid" gid-t never-fails)
(define-call "getgid" gid-t never-fails)
(define-call "setuid" int minusp (uid uid-t))
(define-call "getegid" gid-t never-fails)
(define-call "getgid" gid-t never-fails)