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35 lines
1.2 KiB
35 lines
1.2 KiB
/***
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*fcntl.h - file control options used by open()
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*
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* Copyright (c) 1985-1988, Microsoft Corporation. All rights reserved.
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*
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*Purpose:
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* This file defines constants for the file control options used
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* by the open() function.
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* [System V]
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*
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*******************************************************************************/
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#define O_RDONLY 0x0000 /* open for reading only */
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#define O_WRONLY 0x0001 /* open for writing only */
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#define O_RDWR 0x0002 /* open for reading and writing */
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#define O_APPEND 0x0008 /* writes done at eof */
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#define O_CREAT 0x0100 /* create and open file */
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#define O_TRUNC 0x0200 /* open and truncate */
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#define O_EXCL 0x0400 /* open only if file doesn't already exist */
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/* O_TEXT files have <cr><lf> sequences translated to <lf> on read()'s,
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** and <lf> sequences translated to <cr><lf> on write()'s
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*/
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#define O_TEXT 0x4000 /* file mode is text (translated) */
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#define O_BINARY 0x8000 /* file mode is binary (untranslated) */
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/* macro to translate the C 2.0 name used to force binary mode for files */
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#define O_RAW O_BINARY
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/* Open handle inherit bit */
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#define O_NOINHERIT 0x0080 /* child process doesn't inherit file */
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