52 lines
1.2 KiB
Scheme
52 lines
1.2 KiB
Scheme
;;; Flags for open(2) and fcntl(2).
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;;; Copyright (c) 1993 by Olin Shivers.
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(define-enum-constants open
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;; POSIX
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(read 0)
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(write 1)
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(read+write 2)
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(non-blocking 4)
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(append #o10)
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(no-control-tty #o20)
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(create #o1000)
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(truncate #o2000)
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(exclusive #o4000)
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;; NextStep
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(sync #o1000000) ; Synchronous writes
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(async #o100)) ; Signal process group when data
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(define open/access-mask
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(bitwise-ior open/read
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(bitwise-ior open/write open/read+write)))
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;;; fcntl() commands
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(define-enum-constants fcntl
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(dup-fdes 0) ; F_DUPFD
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(get-fdes-flags 1) ; F_GETFD
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(set-fdes-flags 2) ; F_SETFD
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(get-status-flags 3) ; F_GETFL
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(set-status-flags 4) ; F_SETFL
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(get-owner 5) ; F_GETOWN (Not POSIX)
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(set-owner 6) ; F_SETOWN (Not POSIX)
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(get-record-lock 7) ; F_GETLK
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(set-record-lock-no-block 8) ; F_SETLK
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(set-record-lock 9)) ; F_SETLKW
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;;; fcntl fdes-flags (F_GETFD)
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(define fdflags/close-on-exec 1)
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;;; fcntl status-flags (F_GETFL)
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;;; Mostly, these are OPEN/... flags, like OPEN/APPEND.
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;;; (define fdstatus/... ...)
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;;; fcntl lock values.
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(define-enum-constants lock
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(read 1) ; F_RDLCK
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(write 2) ; F_WRLCK
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(release 3)) ; F_UNLCK
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