ReactOS 0.4.15-dev-7705-g2320c37
fcntl.h
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1/* @(#)fcntl.h 1.19 11/10/19 Copyright 1996-2011 J. Schilling */
2/*
3 * Generic header for users of open(), creat() and chmod()
4 *
5 * Copyright (c) 1996-2011 J. Schilling
6 */
7/*
8 * The contents of this file are subject to the terms of the
9 * Common Development and Distribution License, Version 1.0 only
10 * (the "License"). You may not use this file except in compliance
11 * with the License.
12 *
13 * See the file CDDL.Schily.txt in this distribution for details.
14 * A copy of the CDDL is also available via the Internet at
15 * http://www.opensource.org/licenses/cddl1.txt
16 *
17 * When distributing Covered Code, include this CDDL HEADER in each
18 * file and include the License file CDDL.Schily.txt from this distribution.
19 */
20
21#ifndef _SCHILY_FCNTL_H
22#define _SCHILY_FCNTL_H
23
24#ifndef _SCHILY_MCONFIG_H
25#include <schily/mconfig.h>
26#endif
27
28#ifndef _SCHILY_TYPES_H
29#include <schily/types.h> /* Needed for fcntl.h */
30#endif
31
32#ifndef _SCHILY_STAT_H
33#include <schily/stat.h> /* For 3rd arg of open() and chmod() */
34#endif
35
36#ifdef HAVE_SYS_FILE_H
37/*
38 * Historical systems with flock() only need sys/file.h
39 */
40# ifndef _INCL_SYS_FILE_H
41# include <sys/file.h>
42# define _INCL_SYS_FILE_H
43# endif
44#endif
45#ifdef HAVE_FCNTL_H
46# ifndef _INCL_FCNTL_H
47# include <fcntl.h>
48# define _INCL_FCNTL_H
49#endif
50#endif
51
52/*
53 * Do not define more than O_RDONLY / O_WRONLY / O_RDWR / O_BINARY
54 * The values may differ.
55 *
56 * O_BINARY is defined here to allow all applications to compile on a non DOS
57 * environment without repeating this definition.
58 * O_SEARCH, O_DIRECTORY and NOFOLLOW are defined here to allow to compile on
59 * older platforms.
60 * open(name, O_SEARCH) is like UNOS open(name, "") (open neither for read nor
61 * for write). This allows to call fstat() and to get an fd for openat(fd, ...)
62 */
63#ifndef O_RDONLY
64# define O_RDONLY 0
65#endif
66#ifndef O_WRONLY
67# define O_WRONLY 1
68#endif
69#ifndef O_RDWR
70# define O_RDWR 2
71#endif
72#ifndef O_BINARY /* Only present on DOS or similar */
73# define O_BINARY 0
74#endif
75#ifndef O_NDELAY /* This is undefined on BeOS :-( */
76# define O_NDELAY 0
77#endif
78#ifndef O_EXEC /* Open for exec only (non-directory) */
79# define O_EXEC O_RDONLY
80#endif
81#ifndef O_SEARCH /* Open for search only. */
82# define O_SEARCH O_RDONLY
83#endif
84#ifndef O_DIRECTORY /* Fail if not a directory */
85# define O_DIRECTORY 0
86#endif
87#ifndef O_NOFOLLOW /* Fail if a symlink */
88# define O_NOFOLLOW 0
89#endif
90
91#ifndef O_ACCMODE
92#define O_ACCMODE (O_RDONLY|O_WRONLY|O_RDWR|O_EXEC|O_SEARCH)
93#endif
94
95#ifdef O_NOATIME /* Allow #ifdef O_NOATIME */
96#define _O_NOATIME O_NOATIME
97#else
98#define _O_NOATIME 0
99#endif
100
101#ifndef FD_CLOEXEC
102#define FD_CLOEXEC 1 /* close on exec flag */
103#endif
104
105/*
106 * The following definitions are used for emulating the *at() functions.
107 * We use higher numbers for our definitions, to allow to add emulations
108 * for missing functions without causing a clash with system definitions.
109 */
110#ifndef HAVE_OPENAT
111#ifndef AT_FDCWD
112#define AT_FDCWD 0xffd19553 /* *at() to working dir */
113#endif
114#endif
115#ifndef HAVE_FSTATAT
116#ifndef AT_SYMLINK_NOFOLLOW
117#define AT_SYMLINK_NOFOLLOW 0x10000 /* emulate lstat() */
118#endif
119#endif
120#ifndef HAVE_UNLINKAT
121#ifndef AT_REMOVEDIR
122#define AT_REMOVEDIR 0x20000 /* emulate rmdir() */
123#endif
124#endif
125#ifndef HAVE_FACCESSAT
126#ifndef AT_EACCESS
127#define AT_EACCESS 0x40000 /* EUID access() */
128#endif
129#endif
130#ifndef HAVE_LINKAT
131#ifndef AT_SYMLINK_FOLLOW
132#define AT_SYMLINK_FOLLOW 0x80000 /* follow symlinks before link() */
133#endif
134#endif
135
136#endif /* _SCHILY_FCNTL_H */