| t2ex/bsd_source/lib/libc/src_bsd/include/fcntl.h | bare source | permlink (0.01 seconds) |
1: /* $OpenBSD: fcntl.h,v 1.19 2011/07/18 17:29:49 matthew Exp $ */ 2: /* $NetBSD: fcntl.h,v 1.8 1995/03/26 20:24:12 jtc Exp $ */ 3: 4: /*- 5: * Copyright (c) 1983, 1990, 1993 6: * The Regents of the University of California. All rights reserved. 7: * (c) UNIX System Laboratories, Inc. 8: * All or some portions of this file are derived from material licensed 9: * to the University of California by American Telephone and Telegraph 10: * Co. or Unix System Laboratories, Inc. and are reproduced herein with 11: * the permission of UNIX System Laboratories, Inc. 12: * 13: * Redistribution and use in source and binary forms, with or without 14: * modification, are permitted provided that the following conditions 15: * are met: 16: * 1. Redistributions of source code must retain the above copyright 17: * notice, this list of conditions and the following disclaimer. 18: * 2. Redistributions in binary form must reproduce the above copyright 19: * notice, this list of conditions and the following disclaimer in the 20: * documentation and/or other materials provided with the distribution. 21: * 3. Neither the name of the University nor the names of its contributors 22: * may be used to endorse or promote products derived from this software 23: * without specific prior written permission. 24: * 25: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 26: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 27: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 28: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 29: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 30: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 31: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35: * SUCH DAMAGE. 36: * 37: * @(#)fcntl.h 8.3 (Berkeley) 1/21/94 38: */ 39: 40: #ifndef _SYS_FCNTL_H_ 41: #define _SYS_FCNTL_H_ 42: 43: /* 44: * This file includes the definitions for open and fcntl 45: * described by POSIX for <fcntl.h>; it also includes 46: * related kernel definitions. 47: */ 48: 49: #include <sys/cdefs.h> 50: #ifndef _KERNEL 51: #include <sys/types.h> 52: #endif 53: 54: #ifdef _T2EX 55: 56: #undef _SYS_FCNTL_H_ 57: #include <../../../../include/t2ex/sys/fcntl.h> 58: 59: #else /* _T2EX */ 60: 61: /* 62: * File status flags: these are used by __libc_open(2), __libc_fcntl(2). 63: * They are also used (indirectly) in the kernel file structure f_flags, 64: * which is a superset of the open/fcntl flags. Open flags and f_flags 65: * are inter-convertible using OFLAGS(fflags) and FFLAGS(oflags). 66: * Open/fcntl flags begin with O_; kernel-internal flags begin with F. 67: */ 68: /* open-only flags */ 69: #define O_RDONLY 0x0000 /* open for reading only */ 70: #define O_WRONLY 0x0001 /* open for writing only */ 71: #define O_RDWR 0x0002 /* open for reading and writing */ 72: #define O_ACCMODE 0x0003 /* mask for above modes */ 73: 74: /* 75: * Kernel encoding of open mode; separate read and write bits that are 76: * independently testable: 1 greater than the above. 77: * 78: * XXX 79: * FREAD and FWRITE are excluded from the #ifdef _KERNEL so that TIOCFLUSH, 80: * which was documented to use FREAD/FWRITE, continues to work. 81: */ 82: #if __BSD_VISIBLE 83: #define FREAD 0x0001 84: #define FWRITE 0x0002 85: #endif 86: #define O_NONBLOCK 0x0004 /* no delay */ 87: #define O_APPEND 0x0008 /* set append mode */ 88: #if __BSD_VISIBLE 89: #define O_SHLOCK 0x0010 /* open with shared file lock */ 90: #define O_EXLOCK 0x0020 /* open with exclusive file lock */ 91: #define O_ASYNC 0x0040 /* signal pgrp when data ready */ 92: #define O_FSYNC 0x0080 /* backwards compatibility */ 93: #define O_NOFOLLOW 0x0100 /* if path is a symlink, don't follow */ 94: #endif 95: #if __POSIX_VISIBLE >= 199309 || __XPG_VISIBLE >= 420 96: #define O_SYNC 0x0080 /* synchronous writes */ 97: #endif 98: #define O_CREAT 0x0200 /* create if nonexistent */ 99: #define O_TRUNC 0x0400 /* truncate to zero length */ 100: #define O_EXCL 0x0800 /* error if already exists */ 101: 102: /* XXX - FHASLOCK should be FIF_HASLOCK. */ 103: #ifdef _KERNEL 104: #define FHASLOCK 0x4000 /* descriptor holds advisory lock */ 105: #endif 106: 107: /* 108: * POSIX 1003.1 specifies a higher granularity for synchronous operations 109: * than we support. Since synchronicity is all or nothing in OpenBSD 110: * we just define these to be the same as O_SYNC. 111: */ 112: #define O_DSYNC O_SYNC /* synchronous data writes */ 113: #define O_RSYNC O_SYNC /* synchronous reads */ 114: 115: /* defined by POSIX 1003.1; BSD default, this bit is not required */ 116: #define O_NOCTTY 0x8000 /* don't assign controlling terminal */ 117: 118: /* defined by POSIX Issue 7 */ 119: #define O_CLOEXEC 0x10000 /* atomically set FD_CLOEXEC */ 120: #define O_DIRECTORY 0x20000 /* fail if not a directory */ 121: 122: #ifdef _KERNEL 123: /* 124: * convert from __libc_open() flags to/from fflags; convert O_RD/WR to FREAD/FWRITE. 125: * For out-of-range values for the flags, be slightly careful (but lossy). 126: */ 127: #define FFLAGS(oflags) (((oflags) & ~O_ACCMODE) | (((oflags) + 1) & O_ACCMODE)) 128: #define OFLAGS(fflags) (((fflags) & ~O_ACCMODE) | (((fflags) - 1) & O_ACCMODE)) 129: 130: /* bits to save after open */ 131: #define FMASK (FREAD|FWRITE|FAPPEND|FASYNC|FFSYNC|FNONBLOCK) 132: /* bits settable by __libc_fcntl(F_SETFL, ...) */ 133: #define FCNTLFLAGS (FAPPEND|FASYNC|FFSYNC|FNONBLOCK) 134: #endif 135: 136: /* 137: * The O_* flags used to have only F* names, which were used in the kernel 138: * and by fcntl. We retain the F* names for the kernel f_flags field 139: * and for backward compatibility for fcntl. 140: */ 141: #if __BSD_VISIBLE 142: #define FAPPEND O_APPEND /* kernel/compat */ 143: #define FASYNC O_ASYNC /* kernel/compat */ 144: #define FFSYNC O_SYNC /* kernel */ 145: #define FNONBLOCK O_NONBLOCK /* kernel */ 146: #define FNDELAY O_NONBLOCK /* compat */ 147: #define O_NDELAY O_NONBLOCK /* compat */ 148: #endif 149: 150: /* 151: * Constants used for __libc_fcntl(2) 152: */ 153: 154: /* command values */ 155: #define F_DUPFD 0 /* duplicate file descriptor */ 156: #define F_GETFD 1 /* get file descriptor flags */ 157: #define F_SETFD 2 /* set file descriptor flags */ 158: #define F_GETFL 3 /* get file status flags */ 159: #define F_SETFL 4 /* set file status flags */ 160: #if __POSIX_VISIBLE >= 200112 || __XPG_VISIBLE >= 500 161: #define F_GETOWN 5 /* get SIGIO/SIGURG proc/pgrp */ 162: #define F_SETOWN 6 /* set SIGIO/SIGURG proc/pgrp */ 163: #endif 164: #define F_GETLK 7 /* get record locking information */ 165: #define F_SETLK 8 /* set record locking information */ 166: #define F_SETLKW 9 /* F_SETLK; wait if blocked */ 167: #if __POSIX_VISIBLE >= 200809 168: #define F_DUPFD_CLOEXEC 10 /* duplicate with FD_CLOEXEC set */ 169: #endif 170: 171: /* file descriptor flags (F_GETFD, F_SETFD) */ 172: #define FD_CLOEXEC 1 /* close-on-exec flag */ 173: 174: /* record locking flags (F_GETLK, F_SETLK, F_SETLKW) */ 175: #define F_RDLCK 1 /* shared or read lock */ 176: #define F_UNLCK 2 /* unlock */ 177: #define F_WRLCK 3 /* exclusive or write lock */ 178: #ifdef _KERNEL 179: #define F_WAIT 0x010 /* Wait until lock is granted */ 180: #define F_FLOCK 0x020 /* Use flock(2) semantics for lock */ 181: #define F_POSIX 0x040 /* Use POSIX semantics for lock */ 182: #endif 183: 184: /* 185: * Advisory file segment locking data type - 186: * information passed to system by user 187: */ 188: struct flock { 189: off_t l_start; /* starting offset */ 190: off_t l_len; /* len = 0 means until end of file */ 191: pid_t l_pid; /* lock owner */ 192: short l_type; /* lock type: read/write, etc. */ 193: short l_whence; /* type of l_start */ 194: }; 195: 196: #if __BSD_VISIBLE 197: /* lock operations for flock(2) */ 198: #define LOCK_SH 0x01 /* shared file lock */ 199: #define LOCK_EX 0x02 /* exclusive file lock */ 200: #define LOCK_NB 0x04 /* don't block when locking */ 201: #define LOCK_UN 0x08 /* unlock file */ 202: #endif 203: 204: #if __POSIX_VISIBLE >= 200809 205: #define AT_FDCWD -100 206: 207: #define AT_EACCESS 0x01 208: #define AT_SYMLINK_NOFOLLOW 0x02 209: #define AT_SYMLINK_FOLLOW 0x04 210: #define AT_REMOVEDIR 0x08 211: #endif 212: 213: #endif /* _T2EX */ 214: 215: #ifndef _KERNEL 216: __BEGIN_DECLS 217: #ifdef _T2EX 218: int fs_open(const char *path, int oflag, ... /* mode_t mode */ ); 219: int fs_fcntl(int fd, int cmd, ... /* arg */ ); 220: #define __libc_open fs_open 221: #define __libc_fcntl fs_fcntl 222: #else /* _T2EX */ 223: int __libc_open(const char *, int, ...); 224: int __libc_fcntl(int, int, ...); 225: #endif /* _T2EX */ 226: int creat(const char *, mode_t); 227: 228: #if __BSD_VISIBLE 229: int flock(int, int); 230: #endif 231: #if __POSIX_VISIBLE >= 200809 232: int openat(int, const char *, int, ...); 233: #endif 234: __END_DECLS 235: #endif 236: 237: #endif /* !_SYS_FCNTL_H_ */ 238: