44 lines
1.1 KiB
Scheme
44 lines
1.1 KiB
Scheme
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;;; Flags for open(2) and fcntl(2).
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;;; Copyright (c) 1993 by Olin Shivers.
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(define-syntax define-open-flags
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(syntax-rules ()
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((define-opens form ...)
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(begin (define-enum-constant "open" . form) ...))))
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(define-open-flags
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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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(nonblocking #o200000)
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(append #o10)
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(no-control-tty #o400000)
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(create #o0400)
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(truncate #o1000)
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(exclusive #o2000)
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;; NextStep
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(sync #o100000)) ; Synchronous writes
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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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;;; These are internal; they are not part of the supported scsh interface.
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(define fcntl/close-on-exec 1)
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(define fcntl/dupfd 0)
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(define fcntl/get-fd-flags 1)
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(define fcntl/set-fd-flags 2)
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(define fcntl/get-file-flags 3)
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(define fcntl/set-file-flags 4)
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(define fcntl/get-record-lock 5) ; F_GETLK
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(define fcntl/set-record-lock-noblock 6) ; F_SETLK
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(define fcntl/set-record-lock 7) ; F_SETLKW
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(define lock/read 1) ; F_RDLCK
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(define lock/write 2) ; F_WRLCK
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(define lock/release 3) ' F_UNLCK
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