anchor.diff:  (constant (dt-lnk "DT_LNK"))
   (constant (dt-sock "DT_SOCK"))
   (constant (dt-wht "DT_WHT"))
  ++
   
   ;;; ioctl()
   
   (constant (fionbio "FIONBIO"))
   (constant (fionread "FIONREAD"))
  -
  -;;;; from sys/resource.h
  ++
  +
  +;;; from sys/resource.h
   
   (ctype rlim-t "rlim_t")
   (ctype id-t "id_t")
  
positive.code:   (atime   "st_atime"   :type time-t)
    (mtime   "st_mtime"   :type time-t)
    (ctime   "st_ctime"   :type time-t))
  
  ;;; mmap()
  (constant (prot-none   "PROT_NONE")   :documentation "mmap: no protection")
  (constant (prot-read   "PROT_READ")   :documentation "mmap: read protection")
  (constant (prot-write  "PROT_WRITE")  :documentation "mmap: write protection")
  
negative.code: (constant (s-ifsock "S_IFSOCK") :documentation "socket")
  
  (constant (path-max "PATH_MAX" "MAXPATHLEN"))
  
  
  ;;; from unistd.h
  
  (ctype useconds-t "useconds_t")
  
  
  ;;; from time.h
  
  (ctype time-t "time_t")
  (ctype suseconds-t "suseconds_t")
  