72 lines
2 KiB
C
72 lines
2 KiB
C
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/***
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*fcntl.h - file control options used by open()
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*
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* Copyright (c) 1985-1994, 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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#ifndef _INC_FCNTL
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#define _INC_FCNTL
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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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/* Temporary file bit - file is deleted when last handle is closed */
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#define _O_TEMPORARY 0x0040 /* temporary file bit */
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/* temporary access hint */
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#define _O_SHORT_LIVED 0x1000 /* temporary storage file, try not to flush */
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/* sequential/random access hints */
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#define _O_SEQUENTIAL 0x0020 /* file access is primarily sequential */
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#define _O_RANDOM 0x0010 /* file access is primarily random */
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#if !__STDC__ || defined(_POSIX_)
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/* Non-ANSI names for compatibility */
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#define O_RDONLY _O_RDONLY
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#define O_WRONLY _O_WRONLY
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#define O_RDWR _O_RDWR
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#define O_APPEND _O_APPEND
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#define O_CREAT _O_CREAT
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#define O_TRUNC _O_TRUNC
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#define O_EXCL _O_EXCL
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#define O_TEXT _O_TEXT
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#define O_BINARY _O_BINARY
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#define O_RAW _O_BINARY
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#define O_TEMPORARY _O_TEMPORARY
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#define O_NOINHERIT _O_NOINHERIT
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#define O_SEQUENTIAL _O_SEQUENTIAL
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#define O_RANDOM _O_RANDOM
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#endif /* __STDC__ */
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#endif /* _INC_FCNTL */
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