| 1 | /* $Id: $ */
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| 2 | /** @file
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| 3 | * FreeBSD 5.1 + EMX
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| 4 | *
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| 5 | * @changed bird: EMX isms.
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| 6 | * @changed bird: Removed (non KERNEL) stuff we don't implement and added
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| 7 | * EMX specific stuff.
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| 8 | * @changed bird: Added sys/stat.h if in XSI mode.
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| 9 | * @todo Consider implementing the flags and commands we don't currently
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| 10 | * include.
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| 11 | */
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| 12 |
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| 13 |
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| 14 | /*-
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| 15 | * Copyright (c) 1983, 1990, 1993
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| 16 | * The Regents of the University of California. All rights reserved.
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| 17 | * (c) UNIX System Laboratories, Inc.
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| 18 | * All or some portions of this file are derived from material licensed
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| 19 | * to the University of California by American Telephone and Telegraph
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| 20 | * Co. or Unix System Laboratories, Inc. and are reproduced herein with
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| 21 | * the permission of UNIX System Laboratories, Inc.
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| 22 | *
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| 23 | * Redistribution and use in source and binary forms, with or without
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| 24 | * modification, are permitted provided that the following conditions
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| 25 | * are met:
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| 26 | * 1. Redistributions of source code must retain the above copyright
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| 27 | * notice, this list of conditions and the following disclaimer.
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| 28 | * 2. Redistributions in binary form must reproduce the above copyright
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| 29 | * notice, this list of conditions and the following disclaimer in the
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| 30 | * documentation and/or other materials provided with the distribution.
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| 31 | * 3. All advertising materials mentioning features or use of this software
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| 32 | * must display the following acknowledgement:
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| 33 | * This product includes software developed by the University of
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| 34 | * California, Berkeley and its contributors.
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| 35 | * 4. Neither the name of the University nor the names of its contributors
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| 36 | * may be used to endorse or promote products derived from this software
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| 37 | * without specific prior written permission.
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| 38 | *
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| 39 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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| 40 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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| 41 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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| 42 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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| 43 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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| 44 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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| 45 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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| 46 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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| 47 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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| 48 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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| 49 | * SUCH DAMAGE.
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| 50 | *
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| 51 | * @(#)fcntl.h 8.3 (Berkeley) 1/21/94
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| 52 | * $FreeBSD: src/sys/sys/fcntl.h,v 1.14 2002/09/17 22:22:50 mike Exp $
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| 53 | */
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| 54 |
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| 55 | #ifndef _SYS_FCNTL_H_
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| 56 | #define _SYS_FCNTL_H_
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| 57 | #define _SYS_FCNTL_H /* bird: EMX */
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| 58 |
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| 59 | /*
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| 60 | * This file includes the definitions for open and fcntl
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| 61 | * described by POSIX for <fcntl.h>; it also includes
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| 62 | * related kernel definitions.
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| 63 | */
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| 64 |
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| 65 | #include <sys/cdefs.h>
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| 66 | #include <sys/_types.h>
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| 67 | #if __XSI_VISIBLE /* bird */
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| 68 | #include <sys/stat.h> /* bird */
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| 69 | #endif /* bird */
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| 70 |
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| 71 | #if !defined(_MODE_T_DECLARED) && !defined(_MODE_T) /* bird: EMX */
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| 72 | typedef __mode_t mode_t;
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| 73 | #define _MODE_T_DECLARED
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| 74 | #define _MODE_T /* bird: EMX */
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| 75 | #endif
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| 76 |
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| 77 | #if !defined(_OFF_T_DECLARED) && !defined(_OFF_T) /* bird: EMX */
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| 78 | typedef __off_t off_t;
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| 79 | #define _OFF_T_DECLARED
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| 80 | #define _OFF_T /* bird: EMX */
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| 81 | #endif
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| 82 |
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| 83 | #if !defined(_PID_T_DECLARED) && !defined(_PID_T) /* bird: EMX */
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| 84 | typedef __pid_t pid_t;
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| 85 | #define _PID_T_DECLARED
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| 86 | #define _PID_T /* bird: EMX */
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| 87 | #endif
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| 88 |
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| 89 | /*
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| 90 | * File status flags: these are used by open(2), fcntl(2).
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| 91 | * They are also used (indirectly) in the kernel file structure f_flags,
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| 92 | * which is a superset of the open/fcntl flags. Open flags and f_flags
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| 93 | * are inter-convertible using OFLAGS(fflags) and FFLAGS(oflags).
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| 94 | * Open/fcntl flags begin with O_; kernel-internal flags begin with F.
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| 95 | */
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| 96 | /* open-only flags */
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| 97 | #define O_RDONLY 0x0000 /* open for reading only */
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| 98 | #define O_WRONLY 0x0001 /* open for writing only */
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| 99 | #define O_RDWR 0x0002 /* open for reading and writing */
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| 100 | #define O_ACCMODE 0x0003 /* mask for above modes */
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| 101 |
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| 102 | /*
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| 103 | * Kernel encoding of open mode; separate read and write bits that are
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| 104 | * independently testable: 1 greater than the above.
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| 105 | *
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| 106 | * XXX
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| 107 | * FREAD and FWRITE are excluded from the #ifdef _KERNEL so that TIOCFLUSH,
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| 108 | * which was documented to use FREAD/FWRITE, continues to work.
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| 109 | */
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| 110 | #if __BSD_VISIBLE
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| 111 | #ifndef FREAD /* bird: safety */
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| 112 | #define FREAD 0x0001
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| 113 | #define FWRITE 0x0002
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| 114 | #endif
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| 115 | #endif /* bird: safety */
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| 116 | #define O_NONBLOCK 0x0004 /* no delay */
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| 117 | #define O_APPEND 0x0008 /* set append mode */
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| 118 | #if __BSD_VISIBLE
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| 119 | #if 0 /* bird: not implemented - start */
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| 120 | #define O_SHLOCK 0x0010 /* open with shared file lock */
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| 121 | #define O_EXLOCK 0x0020 /* open with exclusive file lock */
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| 122 | #define O_ASYNC 0x0040 /* signal pgrp when data ready */
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| 123 | #endif /* bird: not implemented - end */
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| 124 | #define O_FSYNC 0x0080 /* synchronous writes */
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| 125 | #endif
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| 126 | /* bird: EMX used 0x2000 for O_SYNC. */
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| 127 | #define O_SYNC 0x0080 /* POSIX synonym for O_FSYNC */
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| 128 | #if __BSD_VISIBLE
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| 129 | #define O_NOFOLLOW 0x0100 /* don't follow symlinks */
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| 130 | #endif
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| 131 | #define O_CREAT 0x0200 /* create if nonexistent */
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| 132 | #define O_TRUNC 0x0400 /* truncate to zero length */
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| 133 | #define O_EXCL 0x0800 /* error if already exists */
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| 134 | #ifdef _KERNEL
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| 135 | /* FMARK/FDEFER kept in f_gcflags */
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| 136 | #define FMARK 0x1 /* mark during gc() */
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| 137 | #define FDEFER 0x2 /* defer for next gc pass */
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| 138 | #define FHASLOCK 0x4000 /* descriptor holds advisory lock */
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| 139 | #endif
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| 140 |
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| 141 | /* Defined by POSIX 1003.1; BSD default, but must be distinct from O_RDONLY. */
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| 142 | /* bird: EMX used 0x4000 for O_NOCTTY. */
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| 143 | #define O_NOCTTY 0x8000 /* don't assign controlling terminal */
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| 144 |
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| 145 | #if __BSD_VISIBLE
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| 146 | /* Attempt to bypass buffer cache */
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| 147 | #define O_DIRECT 0x00010000
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| 148 | #endif
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| 149 |
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| 150 | /*
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| 151 | * XXX missing O_DSYNC, O_RSYNC.
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| 152 | */
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| 153 |
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| 154 | #ifdef _KERNEL
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| 155 | /* convert from open() flags to/from fflags; convert O_RD/WR to FREAD/FWRITE */
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| 156 | #define FFLAGS(oflags) ((oflags) + 1)
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| 157 | #define OFLAGS(fflags) ((fflags) - 1)
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| 158 |
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| 159 | /* bits to save after open */
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| 160 | #define FMASK (FREAD|FWRITE|FAPPEND|FASYNC|FFSYNC|FNONBLOCK|O_DIRECT)
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| 161 | /* bits settable by fcntl(F_SETFL, ...) */
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| 162 | #define FCNTLFLAGS (FAPPEND|FASYNC|FFSYNC|FNONBLOCK|FPOSIXSHM|O_DIRECT)
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| 163 | #endif
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| 164 |
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| 165 | /*
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| 166 | * The O_* flags used to have only F* names, which were used in the kernel
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| 167 | * and by fcntl. We retain the F* names for the kernel f_flag field
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| 168 | * and for backward compatibility for fcntl. These flags are deprecated.
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| 169 | */
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| 170 | #if __BSD_VISIBLE
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| 171 | #define FAPPEND O_APPEND /* kernel/compat */
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| 172 | #if 0 /* bird: not implemented - start */
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| 173 | #define FASYNC O_ASYNC /* kernel/compat */
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| 174 | #endif /* bird: not implemented - end */
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| 175 | #define FFSYNC O_FSYNC /* kernel */
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| 176 | #define FNONBLOCK O_NONBLOCK /* kernel */
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| 177 | #define FNDELAY O_NONBLOCK /* compat */
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| 178 | #define O_NDELAY O_NONBLOCK /* compat */
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| 179 | #endif
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| 180 |
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| 181 | #if 0 /* bird: not implemented - start */
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| 182 | /*
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| 183 | * We are out of bits in f_flag (which is a short). However,
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| 184 | * the flag bits not set in FMASK are only meaningful in the
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| 185 | * initial open syscall. Those bits can thus be given a
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| 186 | * different meaning for fcntl(2).
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| 187 | */
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| 188 | #if __BSD_VISIBLE
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| 189 |
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| 190 | /*
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| 191 | * Set by shm_open(3) to get automatic MAP_ASYNC behavior
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| 192 | * for POSIX shared memory objects (which are otherwise
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| 193 | * implemented as plain files).
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| 194 | */
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| 195 | #define FPOSIXSHM O_NOFOLLOW
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| 196 | #endif
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| 197 | #endif /* bird: not implemented - end */
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| 198 |
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| 199 | /*
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| 200 | * Constants used for fcntl(2)
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| 201 | */
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| 202 |
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| 203 | /* command values */
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| 204 | /* bird: EMX used 5 for F_DUPFD. */
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| 205 | #define F_DUPFD 0 /* duplicate file descriptor */
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| 206 | /* bird: EMX used 3 for F_GETFD. */
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| 207 | #define F_GETFD 1 /* get file descriptor flags */
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| 208 | /* bird: EMX used 4 for F_SETFD. */
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| 209 | #define F_SETFD 2 /* set file descriptor flags */
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| 210 | /* bird: EMX used 1 for F_GETFL. */
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| 211 | #define F_GETFL 3 /* get file status flags */
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| 212 | /* bird: EMX used 2 for F_SETFL. */
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| 213 | #define F_SETFL 4 /* set file status flags */
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| 214 | #if 0 /* bird: not implemented - start */
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| 215 | #if __BSD_VISIBLE || __XSI_VISIBLE || __POSIX_VISIBLE >= 200112
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| 216 | #define F_GETOWN 5 /* get SIGIO/SIGURG proc/pgrp */
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| 217 | #define F_SETOWN 6 /* set SIGIO/SIGURG proc/pgrp */
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| 218 | #endif
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| 219 | #endif /* bird: not implemented - end */
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| 220 | #define F_GETLK 7 /* get record locking information */
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| 221 | #define F_SETLK 8 /* set record locking information */
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| 222 | #define F_SETLKW 9 /* F_SETLK; wait if blocked */
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| 223 |
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| 224 |
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| 225 | /* file descriptor flags (F_GETFD, F_SETFD) */
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| 226 | #define FD_CLOEXEC 1 /* close-on-exec flag */
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| 227 |
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| 228 | /* record locking flags (F_GETLK, F_SETLK, F_SETLKW) */
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| 229 | #define F_RDLCK 1 /* shared or read lock */
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| 230 | #define F_UNLCK 2 /* unlock */
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| 231 | #define F_WRLCK 3 /* exclusive or write lock */
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| 232 | #ifdef _KERNEL
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| 233 | #define F_WAIT 0x010 /* Wait until lock is granted */
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| 234 | #define F_FLOCK 0x020 /* Use flock(2) semantics for lock */
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| 235 | #define F_POSIX 0x040 /* Use POSIX semantics for lock */
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| 236 | #endif
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| 237 |
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| 238 | /*
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| 239 | * Advisory file segment locking data type -
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| 240 | * information passed to system by user
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| 241 | */
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| 242 | struct flock {
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| 243 | off_t l_start; /* starting offset */
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| 244 | off_t l_len; /* len = 0 means until end of file */
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| 245 | pid_t l_pid; /* lock owner */
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| 246 | short l_type; /* lock type: read/write, etc. */
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| 247 | short l_whence; /* type of l_start */
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| 248 | };
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| 249 |
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| 250 |
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| 251 | #if __BSD_VISIBLE
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| 252 | /* lock operations for flock(2) */
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| 253 | #define LOCK_SH 0x01 /* shared file lock */
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| 254 | #define LOCK_EX 0x02 /* exclusive file lock */
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| 255 | #define LOCK_NB 0x04 /* don't block when locking */
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| 256 | #define LOCK_UN 0x08 /* unlock file */
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| 257 | #endif
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| 258 |
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| 259 | /*
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| 260 | * XXX missing posix_fadvise() and posix_fallocate(), and POSIX_FADV_* macros.
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| 261 | */
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| 262 |
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| 263 | #ifndef _KERNEL
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| 264 | __BEGIN_DECLS
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| 265 | int open(const char *, int, ...);
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| 266 | int creat(const char *, mode_t);
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| 267 | int fcntl(int, int, ...);
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| 268 | #if __BSD_VISIBLE
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| 269 | int flock(int, int);
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| 270 | #endif
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| 271 | __END_DECLS
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| 272 | #endif
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| 273 |
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| 274 | /* bird: EMX stuff - start */
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| 275 | #if !defined (O_TEXT)
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| 276 | /* Open flags.
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| 277 | * There is some limits to the available bits, generally FreeBSD limits
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| 278 | * it's range to the first 16-bits. See emx\io.h for the complete
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| 279 | * assignments.
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| 280 | */
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| 281 | #define O_BINARY 0x00020000
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| 282 | #define O_TEXT 0x00040000
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| 283 | #define O_SIZE 0x00080000
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| 284 | #if !defined (_POSIX_SOURCE) || defined(__USE_EMX)
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| 285 | #define O_NOINHERIT 0x00001000
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| 286 | #endif
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| 287 | #endif
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| 288 |
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| 289 | #if !defined (F_OK) /* bird: Really defined in unistd.h, but Linux and EMX does it here too. */
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| 290 | /* access function */
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| 291 | #define F_OK 0 /* test for existence of file */
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| 292 | #define X_OK 0x01 /* test for execute or search permission */
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| 293 | #define W_OK 0x02 /* test for write permission */
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| 294 | #define R_OK 0x04 /* test for read permission */
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| 295 | #endif
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| 296 |
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| 297 | #if !defined (_POSIX_SOURCE) || defined (_WITH_UNDERSCORE) || defined(__USE_EMX)
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| 298 | __BEGIN_DECLS
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| 299 | int _creat (const char *, int);
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| 300 | int _fcntl (int, int, ...);
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| 301 | int _flock (int, int);
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| 302 | int _open (const char *, int, ...);
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| 303 | __END_DECLS
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| 304 | #endif
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| 305 | /* bird: EMX stuff - end */
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| 306 |
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| 307 | #endif /* !_SYS_FCNTL_H_ */
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