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							- /*
 
-  * Copyright (c) 2006-2018, RT-Thread Development Team
 
-  *
 
-  * SPDX-License-Identifier: Apache-2.0
 
-  *
 
-  * Change Logs:
 
-  * Date           Author       Notes
 
-  */
 
- #ifndef _SYS_UNISTD_H
 
- #define _SYS_UNISTD_H
 
- #include <rtthread.h>
 
- #ifdef RT_USING_DFS
 
- #define STDIN_FILENO    0       /* standard input file descriptor */
 
- #define STDOUT_FILENO   1       /* standard output file descriptor */
 
- #define STDERR_FILENO   2       /* standard error file descriptor */
 
- #include <dfs_posix.h>
 
- #else
 
- #define _FREAD      0x0001  /* read enabled */
 
- #define _FWRITE     0x0002  /* write enabled */
 
- #define _FAPPEND    0x0008  /* append (writes guaranteed at the end) */
 
- #define _FMARK      0x0010  /* internal; mark during gc() */
 
- #define _FDEFER     0x0020  /* internal; defer for next gc pass */
 
- #define _FASYNC     0x0040  /* signal pgrp when data ready */
 
- #define _FSHLOCK    0x0080  /* BSD flock() shared lock present */
 
- #define _FEXLOCK    0x0100  /* BSD flock() exclusive lock present */
 
- #define _FCREAT     0x0200  /* open with file create */
 
- #define _FTRUNC     0x0400  /* open with truncation */
 
- #define _FEXCL      0x0800  /* error on open if file exists */
 
- #define _FNBIO      0x1000  /* non blocking I/O (sys5 style) */
 
- #define _FSYNC      0x2000  /* do all writes synchronously */
 
- #define _FNONBLOCK  0x4000  /* non blocking I/O (POSIX style) */
 
- #define _FNDELAY    _FNONBLOCK  /* non blocking I/O (4.2 style) */
 
- #define _FNOCTTY    0x8000  /* don't assign a ctty on this open */
 
- #define O_RDONLY    0       /* +1 == FREAD */
 
- #define O_WRONLY    1       /* +1 == FWRITE */
 
- #define O_RDWR      2       /* +1 == FREAD|FWRITE */
 
- #define O_APPEND    _FAPPEND
 
- #define O_CREAT     _FCREAT
 
- #define O_TRUNC     _FTRUNC
 
- #define O_EXCL      _FEXCL
 
- #define O_SYNC      _FSYNC
 
- #endif
 
- #endif /* _SYS_UNISTD_H */
 
 
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