;;; Flags for open(2) and fcntl(2).
;;; Copyright (c) 1993 by Olin Shivers.
;;; AIX version by Chipsy Sperber

(define-syntax define-open-flags
  (syntax-rules ()
    ((define-errnos form ...)
     (begin (define-enum-constant "open" . form) ...))))

(define-open-flags
  (read			0)
  (write		1)
  (read+write		2)
  (append		8)
  (create		#x0100)
  (exclusive		#x0400)
  (no-control-tty	#x0800)
  (nonblocking		#x0004)
  (truncate		#x0200)

;;; Not POSIX.
  (no-delay	#x8000)
  (sync		#x0010))

(define open/access-mask
  (bitwise-ior open/read
	       (bitwise-ior open/write open/read+write)))

;;; These are internal; they are not part of the supported scsh interface.

(define fcntl/close-on-exec 		1)

(define fcntl/dupfd			0)
(define fcntl/get-fd-flags		1)
(define fcntl/set-fd-flags		2)
(define fcntl/get-file-flags		3)
(define fcntl/set-file-flags		4)
(define fcntl/get-record-lock		5)	; F_GETLK
(define fcntl/set-record-lock-noblock	6)	; F_SETLK
(define fcntl/set-record-lock		7)	; F_SETLKW

(define lock/read	1)	; F_RDLCK
(define lock/write	2)	; F_WRLCK
(define lock/release	3)	' F_UNLCK