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150 lines
3.9 KiB
C
150 lines
3.9 KiB
C
/* $Id: fcntl.h,v 1.6 2002/10/29 04:45:08 rex Exp $
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*/
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/*
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* fcntl.h
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*
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* file control options. Conforming to the Single UNIX(r) Specification
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* Version 2, System Interface & Headers Issue 5
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*
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* This file is part of the ReactOS Operating System.
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*
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* Contributors:
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* Created by KJK::Hyperion <noog@libero.it>
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*
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* THIS SOFTWARE IS NOT COPYRIGHTED
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*
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* This source code is offered for use in the public domain. You may
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* use, modify or distribute it freely.
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*
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* This code is distributed in the hope that it will be useful but
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* WITHOUT ANY WARRANTY. ALL WARRANTIES, EXPRESS OR IMPLIED ARE HEREBY
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* DISCLAMED. This includes but is not limited to warranties of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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*
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*/
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#ifndef __FCNTL_H_INCLUDED__
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#define __FCNTL_H_INCLUDED__
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/* INCLUDES */
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <unistd.h>
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/* OBJECTS */
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/* TYPES */
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/*
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the structure flock describes a file lock
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*/
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struct flock
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{
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short l_type; /* type of lock; F_RDLCK, F_WRLCK, F_UNLCK */
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short l_whence; /* flag for starting offset */
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off_t l_start; /* relative offset in bytes */
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off_t l_len; /* size; if 0 then until EOF */
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pid_t l_pid; /* process ID of the process holding the lock;
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returned with F_GETLK */
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};
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/* CONSTANTS */
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/*
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values for cmd used by fcntl()
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*/
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enum __fcntl_cmd
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{
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F_DUPFD, /* duplicate file descriptor */
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F_GETFD, /* get file descriptor flags */
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F_GETLK, /* get record locking information */
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F_SETFD, /* set file descriptor flags */
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F_GETFL, /* get file status flags and file access modes */
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F_SETFL, /* set file status flags */
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F_SETLK, /* set record locking information */
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F_SETLKW, /* set record locking information; wait if blocked */
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/* ReactOS-specific */
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F_NEWFD, /* create new file descriptor */
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F_DELFD, /* delete file descriptor */
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F_GETALL, /* get a copy of the internal descriptor object */
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F_SETALL, /* initialize internal descriptor object */
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F_GETXP, /* get file descriptor extra data pointer */
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F_SETXP, /* set file descriptor extra data pointer */
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F_GETXS, /* get file descriptor extra data size */
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F_SETXS, /* set file descriptor extra data size */
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F_GETFH, /* get file handle */
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F_SETFH /* set file handle */
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};
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/*
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file descriptor flags used for fcntl()
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*/
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/* Close the file descriptor upon execution of an exec family function. */
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#define FD_CLOEXEC (0x00000001)
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/*
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values for l_type used for record locking with fcntl()
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*/
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/* Shared or read lock. */
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#define F_RDLCK (1)
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/* Unlock. */
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#define F_UNLCK (2)
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/* Exclusive or write lock. */
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#define F_WRLCK (3)
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/*
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file flags used for open()
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*/
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/* Create file if it does not exist. */
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#define O_CREAT (0x00000100)
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/* Truncate flag. */
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#define O_TRUNC (0x00000200)
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/* Exclusive use flag. */
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#define O_EXCL (0x00000400)
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/* Do not assign controlling terminal. */
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#define O_NOCTTY (0x00000800)
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/* ReactOS-specific */
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/* File must be a directory */
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#define _O_DIRFILE (0x00100000)
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/*
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file status flags used for open() and fcntl()
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*/
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/* Set append mode. */
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#define O_APPEND (0x00000008)
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/* Non-blocking mode. */
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#define O_NONBLOCK (0x00001000)
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/* Write according to synchronised I/O data integrity completion. */
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#define O_DSYNC (0x00002000)
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/* Synchronised read I/O operations. */
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#define O_RSYNC (0x00004000)
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/* Write according to synchronised I/O file integrity completion. */
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#define O_SYNC (0x00008000)
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/*
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file access modes used for open() and fcntl()
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*/
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/* Open for reading only. */
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#define O_RDONLY (0x00000000)
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/* Open for writing only. */
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#define O_WRONLY (0x00000001)
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/* Open for reading and writing. */
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#define O_RDWR (0x00000002)
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/*
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mask for use with file access modes
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*/
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#define O_ACCMODE (0x00000007)
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/* PROTOTYPES */
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int creat(const char *, mode_t);
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int fcntl(int, int, ...);
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int open(const char *, int, ...);
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int _Wcreat(const wchar_t *, mode_t);
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int _Wopen(const wchar_t *, int, ...);
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/* MACROS */
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#endif /* __FCNTL_H_INCLUDED__ */
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/* EOF */
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