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137 lines
3.4 KiB
C
137 lines
3.4 KiB
C
/* @(#)fcntl.h 1.19 11/10/19 Copyright 1996-2011 J. Schilling */
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/*
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* Generic header for users of open(), creat() and chmod()
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*
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* Copyright (c) 1996-2011 J. Schilling
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*/
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/*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License, Version 1.0 only
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* (the "License"). You may not use this file except in compliance
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* with the License.
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*
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* See the file CDDL.Schily.txt in this distribution for details.
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* A copy of the CDDL is also available via the Internet at
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* http://www.opensource.org/licenses/cddl1.txt
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file CDDL.Schily.txt from this distribution.
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*/
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#ifndef _SCHILY_FCNTL_H
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#define _SCHILY_FCNTL_H
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#ifndef _SCHILY_MCONFIG_H
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#include <schily/mconfig.h>
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#endif
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#ifndef _SCHILY_TYPES_H
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#include <schily/types.h> /* Needed for fcntl.h */
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#endif
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#ifndef _SCHILY_STAT_H
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#include <schily/stat.h> /* For 3rd arg of open() and chmod() */
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#endif
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#ifdef HAVE_SYS_FILE_H
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/*
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* Historical systems with flock() only need sys/file.h
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*/
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# ifndef _INCL_SYS_FILE_H
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# include <sys/file.h>
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# define _INCL_SYS_FILE_H
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# endif
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#endif
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#ifdef HAVE_FCNTL_H
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# ifndef _INCL_FCNTL_H
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# include <fcntl.h>
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# define _INCL_FCNTL_H
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#endif
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#endif
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/*
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* Do not define more than O_RDONLY / O_WRONLY / O_RDWR / O_BINARY
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* The values may differ.
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*
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* O_BINARY is defined here to allow all applications to compile on a non DOS
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* environment without repeating this definition.
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* O_SEARCH, O_DIRECTORY and NOFOLLOW are defined here to allow to compile on
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* older platforms.
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* open(name, O_SEARCH) is like UNOS open(name, "") (open neither for read nor
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* for write). This allows to call fstat() and to get an fd for openat(fd, ...)
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*/
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#ifndef O_RDONLY
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# define O_RDONLY 0
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#endif
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#ifndef O_WRONLY
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# define O_WRONLY 1
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#endif
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#ifndef O_RDWR
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# define O_RDWR 2
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#endif
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#ifndef O_BINARY /* Only present on DOS or similar */
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# define O_BINARY 0
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#endif
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#ifndef O_NDELAY /* This is undefined on BeOS :-( */
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# define O_NDELAY 0
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#endif
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#ifndef O_EXEC /* Open for exec only (non-directory) */
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# define O_EXEC O_RDONLY
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#endif
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#ifndef O_SEARCH /* Open for search only. */
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# define O_SEARCH O_RDONLY
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#endif
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#ifndef O_DIRECTORY /* Fail if not a directory */
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# define O_DIRECTORY 0
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#endif
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#ifndef O_NOFOLLOW /* Fail if a symlink */
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# define O_NOFOLLOW 0
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#endif
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#ifndef O_ACCMODE
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#define O_ACCMODE (O_RDONLY|O_WRONLY|O_RDWR|O_EXEC|O_SEARCH)
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#endif
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#ifdef O_NOATIME /* Allow #ifdef O_NOATIME */
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#define _O_NOATIME O_NOATIME
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#else
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#define _O_NOATIME 0
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#endif
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#ifndef FD_CLOEXEC
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#define FD_CLOEXEC 1 /* close on exec flag */
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#endif
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/*
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* The following definitions are used for emulating the *at() functions.
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* We use higher numbers for our definitions, to allow to add emulations
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* for missing functions without causing a clash with system definitions.
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*/
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#ifndef HAVE_OPENAT
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#ifndef AT_FDCWD
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#define AT_FDCWD 0xffd19553 /* *at() to working dir */
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#endif
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#endif
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#ifndef HAVE_FSTATAT
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#ifndef AT_SYMLINK_NOFOLLOW
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#define AT_SYMLINK_NOFOLLOW 0x10000 /* emulate lstat() */
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#endif
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#endif
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#ifndef HAVE_UNLINKAT
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#ifndef AT_REMOVEDIR
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#define AT_REMOVEDIR 0x20000 /* emulate rmdir() */
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#endif
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#endif
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#ifndef HAVE_FACCESSAT
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#ifndef AT_EACCESS
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#define AT_EACCESS 0x40000 /* EUID access() */
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#endif
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#endif
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#ifndef HAVE_LINKAT
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#ifndef AT_SYMLINK_FOLLOW
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#define AT_SYMLINK_FOLLOW 0x80000 /* follow symlinks before link() */
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#endif
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#endif
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#endif /* _SCHILY_FCNTL_H */
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