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fdflags.scm
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1995-10-13
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1KB
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45 lines
;;; Flags for open(2) and fcntl(2).
;;; Copyright (c) 1993 by Olin Shivers.
;;; Copyright (c) 1994 by Brian D. Carlstrom.
(define-syntax define-open-flags
(syntax-rules ()
((define-errnos form ...)
(begin (define-enum-constant "open" . form) ...))))
(define-open-flags
(read #o000)
(write #o001)
(read+write #o002)
(append #o00010)
(create #o01000)
(exclusive #o04000)
(no-control-tty #o20000000)
(nonblocking #o4000000)
(truncate #o2000)
;;; Not POSIX.
(no-delay #o0004)
(sync #o100000)
; (blkinuse #o10000)
; (blkandset (bitwise-ior #o10000 #o20000))
(termio #o10000000)
)
(define open/access-mask
(bitwise-ior open/read
(bitwise-ior open/write open/read+write)))
(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 7) ; F_GETLK
(define fcntl/set-record-lock-noblock 8) ; F_SETLK
(define fcntl/set-record-lock 9) ; F_SETLKW
(define lock/read 1) ; F_RDLCK
(define lock/write 2) ; F_WRLCK
(define lock/release 3) ; F_UNLCK