84 lines
1.9 KiB
Scheme
84 lines
1.9 KiB
Scheme
|
;;; Flags for open(2) and fcntl(2).
|
||
|
|
;;; Copyright (c) 1993 by Olin Shivers.
|
||
|
|
|
||
|
|
(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 #x0200)
|
||
|
|
(exclusive #x0800)
|
||
|
|
(no-control-tty #x8000)
|
||
|
|
(nonblocking #x4000)
|
||
|
|
(truncate #x0400)
|
||
|
|
|
||
|
|
;;; Not POSIX.
|
||
|
|
(no-delay 4)
|
||
|
|
(sync #x2000))
|
||
|
|
|
||
|
|
(define open/access-mask
|
||
|
|
(bitwise-ior open/read
|
||
|
|
(bitwise-ior open/write open/read+write)))
|
||
|
|
|
||
|
|
;;;; fcntl
|
||
|
|
;;;; Rough sketch only. Will define a separate proc for each fcntl command.
|
||
|
|
;
|
||
|
|
;;;; fcntl commands
|
||
|
|
;dup
|
||
|
|
;
|
||
|
|
;get-flags ; Only gives close-on-exec bit.
|
||
|
|
;set-flags
|
||
|
|
;
|
||
|
|
;get-status ; Returns open flags + get-status flags (below)
|
||
|
|
;set-status ; Can set: append, sync, async, nbio, nonblocking, no-delay
|
||
|
|
;
|
||
|
|
;get-lock
|
||
|
|
;set-lock
|
||
|
|
;nonblocking-set-lock
|
||
|
|
;
|
||
|
|
;get-record-lock
|
||
|
|
;set-record-lock
|
||
|
|
;set-record-lock-noblock
|
||
|
|
;
|
||
|
|
;get-owner ; Not POSIX
|
||
|
|
;set-owner ; Not POSIX
|
||
|
|
;remote-set-lock ; Not POSIX
|
||
|
|
;nonblocking-remote-set-lock ; Not POSIX
|
||
|
|
;remote-get-lock ; Not POSIX
|
||
|
|
;
|
||
|
|
;;;; Flags
|
||
|
|
;
|
||
|
|
;close-on-exec ; get-flags
|
||
|
|
;
|
||
|
|
;async ; get-status
|
||
|
|
;no-delay ; get-status
|
||
|
|
;nbio ; get-status
|
||
|
|
;
|
||
|
|
;lock/read ; set-lock
|
||
|
|
;lock/write ; set-lock
|
||
|
|
;lock/release ; set-lock
|
||
|
|
|
||
|
|
;;; 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-owner 5) ; F_GETOWN
|
||
|
|
(define fcntl/set-owner 6) ; F_SETOWN
|
||
|
|
(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
|