anchor.diff:    (attributes :pointer)
     (sigmask    :pointer))
   
  -(defsyscall (lfp-spawnattr-getsigdefault
  -             "lfp_spawnattr_getsigdefault")
  -    :int
  -  (attributes :pointer)
  -  (sigdefault :pointer))
  -
   (defsyscall (lfp-spawnattr-setsigdefault
                "lfp_spawnattr_setsigdefault")
       :int
     (attributes :pointer)
     (sigdefault :pointer))
  -
  -(defsyscall (lfp-spawnattr-getpgroup
  -             "lfp_spawnattr_getpgroup")
  -    :int
  -  (attributes :pointer)
  -  (pgroup     :pointer))
   
   (defsyscall (lfp-spawnattr-setpgroup
                "lfp_spawnattr_setpgroup")
  
positive.code:     :int
    (attributes :pointer))
  
  (defsyscall (lfp-spawnattr-getflags
               "lfp_spawnattr_getflags")
      :int
    (attributes :pointer)
    (flags      :pointer))
  
  (defsyscall (lfp-spawnattr-setflags
               "lfp_spawnattr_setflags")
      :int
    (attributes :pointer)
    (flags      :uint32))
  
  (defsyscall (lfp-spawnattr-getsigmask
               "lfp_spawnattr_getsigmask")
      :int
    (attributes :pointer)
    (sigmask    :pointer))
  
  (defsyscall (lfp-spawnattr-setsigmask
               "lfp_spawnattr_setsigmask")
  
negative.code:   (attributes :pointer)
    (pgroup     pid-t))
  
  (defsyscall (lfp-spawnattr-setuid
               "lfp_spawnattr_setuid")
      :int
    (attributes :pointer)
    (uid        uid-t))
  
  (defsyscall (lfp-spawnattr-setgid
               "lfp_spawnattr_setgid")
  